save

Example/Podfile.lock

 PODS:
-  - GMPhobos (0.0.1)
+  - AFNetworking (2.6.3):
+    - AFNetworking/NSURLConnection (= 2.6.3)
+    - AFNetworking/NSURLSession (= 2.6.3)
+    - AFNetworking/Reachability (= 2.6.3)
+    - AFNetworking/Security (= 2.6.3)
+    - AFNetworking/Serialization (= 2.6.3)
+    - AFNetworking/UIKit (= 2.6.3)
+  - AFNetworking/NSURLConnection (2.6.3):
+    - AFNetworking/Reachability
+    - AFNetworking/Security
+    - AFNetworking/Serialization
+  - AFNetworking/NSURLSession (2.6.3):
+    - AFNetworking/Reachability
+    - AFNetworking/Security
+    - AFNetworking/Serialization
+  - AFNetworking/Reachability (2.6.3)
+  - AFNetworking/Security (2.6.3)
+  - AFNetworking/Serialization (2.6.3)
+  - AFNetworking/UIKit (2.6.3):
+    - AFNetworking/NSURLConnection
+    - AFNetworking/NSURLSession
+  - GMLibrary (0.0.1):
+    - GMLibrary/Cache (= 0.0.1)
+    - GMLibrary/Network (= 0.0.1)
+  - GMLibrary/Cache (0.0.1):
+    - TMCache (~> 2.1.0)
+  - GMLibrary/Network (0.0.1):
+    - AFNetworking (~> 2.6.1)
+    - GMLibrary/Cache (~> 0.0.1)
+  - GMPhobos (0.0.2):
+    - GMLibrary (~> 0.0.1)
+  - TMCache (2.1.0)
 
 DEPENDENCIES:
   - GMPhobos (from `../`)
@@ -9,6 +40,9 @@ EXTERNAL SOURCES:
     :path: "../"
 
 SPEC CHECKSUMS:
-  GMPhobos: 7c46530669b3ab2866f37d6c97bd54b493996564
+  AFNetworking: cb8d14a848e831097108418f5d49217339d4eb60
+  GMLibrary: c31039ad32bc93f866d6c3052c20acb8cf9c1568
+  GMPhobos: fa1d3cf45aea2dfb7677bc8ce1fac91d2fb34bd3
+  TMCache: 95ebcc9b3c7e90fb5fd8fc3036cba3aa781c9bed
 
 COCOAPODS: 0.39.0

Example/Pods/AFNetworking/AFNetworking/AFHTTPRequestOperation.h

+// AFHTTPRequestOperation.h
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+#import "AFURLConnectionOperation.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ `AFHTTPRequestOperation` is a subclass of `AFURLConnectionOperation` for requests using the HTTP or HTTPS protocols. It encapsulates the concept of acceptable status codes and content types, which determine the success or failure of a request.
+ */
+@interface AFHTTPRequestOperation : AFURLConnectionOperation
+
+///------------------------------------------------
+/// @name Getting HTTP URL Connection Information
+///------------------------------------------------
+
+/**
+ The last HTTP response received by the operation's connection.
+ */
+@property (readonly, nonatomic, strong, nullable) NSHTTPURLResponse *response;
+
+/**
+ Responses sent from the server in data tasks created with `dataTaskWithRequest:success:failure:` and run using the `GET` / `POST` / et al. convenience methods are automatically validated and serialized by the response serializer. By default, this property is set to an AFHTTPResponse serializer, which uses the raw data as its response object. The serializer validates the status code to be in the `2XX` range, denoting success. If the response serializer generates an error in `-responseObjectForResponse:data:error:`, the `failure` callback of the session task or request operation will be executed; otherwise, the `success` callback will be executed.
+
+ @warning `responseSerializer` must not be `nil`. Setting a response serializer will clear out any cached value
+ */
+@property (nonatomic, strong) AFHTTPResponseSerializer <AFURLResponseSerialization> * responseSerializer;
+
+/**
+ An object constructed by the `responseSerializer` from the response and response data. Returns `nil` unless the operation `isFinished`, has a `response`, and has `responseData` with non-zero content length. If an error occurs during serialization, `nil` will be returned, and the `error` property will be populated with the serialization error.
+ */
+@property (readonly, nonatomic, strong, nullable) id responseObject;
+
+///-----------------------------------------------------------
+/// @name Setting Completion Block Success / Failure Callbacks
+///-----------------------------------------------------------
+
+/**
+ Sets the `completionBlock` property with a block that executes either the specified success or failure block, depending on the state of the request on completion. If `error` returns a value, which can be caused by an unacceptable status code or content type, then `failure` is executed. Otherwise, `success` is executed.
+
+ This method should be overridden in subclasses in order to specify the response object passed into the success block.
+
+ @param success The block to be executed on the completion of a successful request. This block has no return value and takes two arguments: the receiver operation and the object constructed from the response data of the request.
+ @param failure The block to be executed on the completion of an unsuccessful request. This block has no return value and takes two arguments: the receiver operation and the error that occurred during the request.
+ */
+- (void)setCompletionBlockWithSuccess:(nullable void (^)(AFHTTPRequestOperation *operation, id responseObject))success
+                              failure:(nullable void (^)(AFHTTPRequestOperation *operation, NSError *error))failure;
+
+@end
+
+NS_ASSUME_NONNULL_END

Example/Pods/AFNetworking/AFNetworking/AFHTTPRequestOperation.m

+// AFHTTPRequestOperation.m
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "AFHTTPRequestOperation.h"
+
+static dispatch_queue_t http_request_operation_processing_queue() {
+    static dispatch_queue_t af_http_request_operation_processing_queue;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        af_http_request_operation_processing_queue = dispatch_queue_create("com.alamofire.networking.http-request.processing", DISPATCH_QUEUE_CONCURRENT);
+    });
+
+    return af_http_request_operation_processing_queue;
+}
+
+static dispatch_group_t http_request_operation_completion_group() {
+    static dispatch_group_t af_http_request_operation_completion_group;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        af_http_request_operation_completion_group = dispatch_group_create();
+    });
+
+    return af_http_request_operation_completion_group;
+}
+
+#pragma mark -
+
+@interface AFURLConnectionOperation ()
+@property (readwrite, nonatomic, strong) NSURLRequest *request;
+@property (readwrite, nonatomic, strong) NSURLResponse *response;
+@end
+
+@interface AFHTTPRequestOperation ()
+@property (readwrite, nonatomic, strong) NSHTTPURLResponse *response;
+@property (readwrite, nonatomic, strong) id responseObject;
+@property (readwrite, nonatomic, strong) NSError *responseSerializationError;
+@property (readwrite, nonatomic, strong) NSRecursiveLock *lock;
+@end
+
+@implementation AFHTTPRequestOperation
+@dynamic response;
+@dynamic lock;
+
+- (instancetype)initWithRequest:(NSURLRequest *)urlRequest {
+    self = [super initWithRequest:urlRequest];
+    if (!self) {
+        return nil;
+    }
+
+    self.responseSerializer = [AFHTTPResponseSerializer serializer];
+
+    return self;
+}
+
+- (void)setResponseSerializer:(AFHTTPResponseSerializer <AFURLResponseSerialization> *)responseSerializer {
+    NSParameterAssert(responseSerializer);
+
+    [self.lock lock];
+    _responseSerializer = responseSerializer;
+    self.responseObject = nil;
+    self.responseSerializationError = nil;
+    [self.lock unlock];
+}
+
+- (id)responseObject {
+    [self.lock lock];
+    if (!_responseObject && [self isFinished] && !self.error) {
+        NSError *error = nil;
+        self.responseObject = [self.responseSerializer responseObjectForResponse:self.response data:self.responseData error:&error];
+        if (error) {
+            self.responseSerializationError = error;
+        }
+    }
+    [self.lock unlock];
+
+    return _responseObject;
+}
+
+- (NSError *)error {
+    if (_responseSerializationError) {
+        return _responseSerializationError;
+    } else {
+        return [super error];
+    }
+}
+
+#pragma mark - AFHTTPRequestOperation
+
+- (void)setCompletionBlockWithSuccess:(void (^)(AFHTTPRequestOperation *operation, id responseObject))success
+                              failure:(void (^)(AFHTTPRequestOperation *operation, NSError *error))failure
+{
+    // completionBlock is manually nilled out in AFURLConnectionOperation to break the retain cycle.
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Warc-retain-cycles"
+#pragma clang diagnostic ignored "-Wgnu"
+    self.completionBlock = ^{
+        if (self.completionGroup) {
+            dispatch_group_enter(self.completionGroup);
+        }
+
+        dispatch_async(http_request_operation_processing_queue(), ^{
+            if (self.error) {
+                if (failure) {
+                    dispatch_group_async(self.completionGroup ?: http_request_operation_completion_group(), self.completionQueue ?: dispatch_get_main_queue(), ^{
+                        failure(self, self.error);
+                    });
+                }
+            } else {
+                id responseObject = self.responseObject;
+                if (self.error) {
+                    if (failure) {
+                        dispatch_group_async(self.completionGroup ?: http_request_operation_completion_group(), self.completionQueue ?: dispatch_get_main_queue(), ^{
+                            failure(self, self.error);
+                        });
+                    }
+                } else {
+                    if (success) {
+                        dispatch_group_async(self.completionGroup ?: http_request_operation_completion_group(), self.completionQueue ?: dispatch_get_main_queue(), ^{
+                            success(self, responseObject);
+                        });
+                    }
+                }
+            }
+
+            if (self.completionGroup) {
+                dispatch_group_leave(self.completionGroup);
+            }
+        });
+    };
+#pragma clang diagnostic pop
+}
+
+#pragma mark - AFURLRequestOperation
+
+- (void)pause {
+    [super pause];
+
+    u_int64_t offset = 0;
+    if ([self.outputStream propertyForKey:NSStreamFileCurrentOffsetKey]) {
+        offset = [(NSNumber *)[self.outputStream propertyForKey:NSStreamFileCurrentOffsetKey] unsignedLongLongValue];
+    } else {
+        offset = [(NSData *)[self.outputStream propertyForKey:NSStreamDataWrittenToMemoryStreamKey] length];
+    }
+
+    NSMutableURLRequest *mutableURLRequest = [self.request mutableCopy];
+    if ([self.response respondsToSelector:@selector(allHeaderFields)] && [[self.response allHeaderFields] valueForKey:@"ETag"]) {
+        [mutableURLRequest setValue:[[self.response allHeaderFields] valueForKey:@"ETag"] forHTTPHeaderField:@"If-Range"];
+    }
+    [mutableURLRequest setValue:[NSString stringWithFormat:@"bytes=%llu-", offset] forHTTPHeaderField:@"Range"];
+    self.request = mutableURLRequest;
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+    return YES;
+}
+
+- (id)initWithCoder:(NSCoder *)decoder {
+    self = [super initWithCoder:decoder];
+    if (!self) {
+        return nil;
+    }
+
+    self.responseSerializer = [decoder decodeObjectOfClass:[AFHTTPResponseSerializer class] forKey:NSStringFromSelector(@selector(responseSerializer))];
+
+    return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+    [super encodeWithCoder:coder];
+
+    [coder encodeObject:self.responseSerializer forKey:NSStringFromSelector(@selector(responseSerializer))];
+}
+
+#pragma mark - NSCopying
+
+- (id)copyWithZone:(NSZone *)zone {
+    AFHTTPRequestOperation *operation = [super copyWithZone:zone];
+
+    operation.responseSerializer = [self.responseSerializer copyWithZone:zone];
+    operation.completionQueue = self.completionQueue;
+    operation.completionGroup = self.completionGroup;
+
+    return operation;
+}
+
+@end

Example/Pods/AFNetworking/AFNetworking/AFHTTPRequestOperationManager.h

+// AFHTTPRequestOperationManager.h
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+#import <SystemConfiguration/SystemConfiguration.h>
+#import <Availability.h>
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED
+#import <MobileCoreServices/MobileCoreServices.h>
+#else
+#import <CoreServices/CoreServices.h>
+#endif
+
+#import "AFHTTPRequestOperation.h"
+#import "AFURLResponseSerialization.h"
+#import "AFURLRequestSerialization.h"
+#import "AFSecurityPolicy.h"
+#import "AFNetworkReachabilityManager.h"
+
+#ifndef NS_DESIGNATED_INITIALIZER
+#if __has_attribute(objc_designated_initializer)
+#define NS_DESIGNATED_INITIALIZER __attribute__((objc_designated_initializer))
+#else
+#define NS_DESIGNATED_INITIALIZER
+#endif
+#endif
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ `AFHTTPRequestOperationManager` encapsulates the common patterns of communicating with a web application over HTTP, including request creation, response serialization, network reachability monitoring, and security, as well as request operation management.
+
+ ## Subclassing Notes
+
+ Developers targeting iOS 7 or Mac OS X 10.9 or later that deal extensively with a web service are encouraged to subclass `AFHTTPSessionManager`, providing a class method that returns a shared singleton object on which authentication and other configuration can be shared across the application.
+
+ For developers targeting iOS 6 or Mac OS X 10.8 or earlier, `AFHTTPRequestOperationManager` may be used to similar effect.
+
+ ## Methods to Override
+
+ To change the behavior of all request operation construction for an `AFHTTPRequestOperationManager` subclass, override `HTTPRequestOperationWithRequest:success:failure`.
+
+ ## Serialization
+
+ Requests created by an HTTP client will contain default headers and encode parameters according to the `requestSerializer` property, which is an object conforming to `<AFURLRequestSerialization>`.
+
+ Responses received from the server are automatically validated and serialized by the `responseSerializers` property, which is an object conforming to `<AFURLResponseSerialization>`
+
+ ## URL Construction Using Relative Paths
+
+ For HTTP convenience methods, the request serializer constructs URLs from the path relative to the `-baseURL`, using `NSURL +URLWithString:relativeToURL:`, when provided. If `baseURL` is `nil`, `path` needs to resolve to a valid `NSURL` object using `NSURL +URLWithString:`.
+
+ Below are a few examples of how `baseURL` and relative paths interact:
+
+    NSURL *baseURL = [NSURL URLWithString:@"http://example.com/v1/"];
+    [NSURL URLWithString:@"foo" relativeToURL:baseURL];                  // http://example.com/v1/foo
+    [NSURL URLWithString:@"foo?bar=baz" relativeToURL:baseURL];          // http://example.com/v1/foo?bar=baz
+    [NSURL URLWithString:@"/foo" relativeToURL:baseURL];                 // http://example.com/foo
+    [NSURL URLWithString:@"foo/" relativeToURL:baseURL];                 // http://example.com/v1/foo
+    [NSURL URLWithString:@"/foo/" relativeToURL:baseURL];                // http://example.com/foo/
+    [NSURL URLWithString:@"http://example2.com/" relativeToURL:baseURL]; // http://example2.com/
+
+ Also important to note is that a trailing slash will be added to any `baseURL` without one. This would otherwise cause unexpected behavior when constructing URLs using paths without a leading slash.
+
+ ## Network Reachability Monitoring
+
+ Network reachability status and change monitoring is available through the `reachabilityManager` property. Applications may choose to monitor network reachability conditions in order to prevent or suspend any outbound requests. See `AFNetworkReachabilityManager` for more details.
+
+ ## NSSecureCoding & NSCopying Caveats
+
+ `AFHTTPRequestOperationManager` conforms to the `NSSecureCoding` and `NSCopying` protocols, allowing operations to be archived to disk, and copied in memory, respectively. There are a few minor caveats to keep in mind, however:
+
+ - Archives and copies of HTTP clients will be initialized with an empty operation queue.
+ - NSSecureCoding cannot serialize / deserialize block properties, so an archive of an HTTP client will not include any reachability callback block that may be set.
+ */
+@interface AFHTTPRequestOperationManager : NSObject <NSSecureCoding, NSCopying>
+
+/**
+ The URL used to monitor reachability, and construct requests from relative paths in methods like `requestWithMethod:URLString:parameters:`, and the `GET` / `POST` / et al. convenience methods.
+ */
+@property (readonly, nonatomic, strong, nullable) NSURL *baseURL;
+
+/**
+ Requests created with `requestWithMethod:URLString:parameters:` & `multipartFormRequestWithMethod:URLString:parameters:constructingBodyWithBlock:` are constructed with a set of default headers using a parameter serialization specified by this property. By default, this is set to an instance of `AFHTTPRequestSerializer`, which serializes query string parameters for `GET`, `HEAD`, and `DELETE` requests, or otherwise URL-form-encodes HTTP message bodies.
+
+ @warning `requestSerializer` must not be `nil`.
+ */
+@property (nonatomic, strong) AFHTTPRequestSerializer <AFURLRequestSerialization> * requestSerializer;
+
+/**
+ Responses sent from the server in data tasks created with `dataTaskWithRequest:success:failure:` and run using the `GET` / `POST` / et al. convenience methods are automatically validated and serialized by the response serializer. By default, this property is set to a JSON serializer, which serializes data from responses with a `application/json` MIME type, and falls back to the raw data object. The serializer validates the status code to be in the `2XX` range, denoting success. If the response serializer generates an error in `-responseObjectForResponse:data:error:`, the `failure` callback of the session task or request operation will be executed; otherwise, the `success` callback will be executed.
+
+ @warning `responseSerializer` must not be `nil`.
+ */
+@property (nonatomic, strong) AFHTTPResponseSerializer <AFURLResponseSerialization> * responseSerializer;
+
+/**
+ The operation queue on which request operations are scheduled and run.
+ */
+@property (nonatomic, strong) NSOperationQueue *operationQueue;
+
+///-------------------------------
+/// @name Managing URL Credentials
+///-------------------------------
+
+/**
+ Whether request operations should consult the credential storage for authenticating the connection. `YES` by default.
+
+ @see AFURLConnectionOperation -shouldUseCredentialStorage
+ */
+@property (nonatomic, assign) BOOL shouldUseCredentialStorage;
+
+/**
+ The credential used by request operations for authentication challenges.
+
+ @see AFURLConnectionOperation -credential
+ */
+@property (nonatomic, strong, nullable) NSURLCredential *credential;
+
+///-------------------------------
+/// @name Managing Security Policy
+///-------------------------------
+
+/**
+ The security policy used by created request operations to evaluate server trust for secure connections. `AFHTTPRequestOperationManager` uses the `defaultPolicy` unless otherwise specified.
+ */
+@property (nonatomic, strong) AFSecurityPolicy *securityPolicy;
+
+///------------------------------------
+/// @name Managing Network Reachability
+///------------------------------------
+
+/**
+ The network reachability manager. `AFHTTPRequestOperationManager` uses the `sharedManager` by default.
+ */
+@property (readwrite, nonatomic, strong) AFNetworkReachabilityManager *reachabilityManager;
+
+///-------------------------------
+/// @name Managing Callback Queues
+///-------------------------------
+
+/**
+ The dispatch queue for the `completionBlock` of request operations. If `NULL` (default), the main queue is used.
+ */
+#if OS_OBJECT_USE_OBJC
+@property (nonatomic, strong, nullable) dispatch_queue_t completionQueue;
+#else
+@property (nonatomic, assign, nullable) dispatch_queue_t completionQueue;
+#endif
+
+/**
+ The dispatch group for the `completionBlock` of request operations. If `NULL` (default), a private dispatch group is used.
+ */
+#if OS_OBJECT_USE_OBJC
+@property (nonatomic, strong, nullable) dispatch_group_t completionGroup;
+#else
+@property (nonatomic, assign, nullable) dispatch_group_t completionGroup;
+#endif
+
+///---------------------------------------------
+/// @name Creating and Initializing HTTP Clients
+///---------------------------------------------
+
+/**
+ Creates and returns an `AFHTTPRequestOperationManager` object.
+ */
++ (instancetype)manager;
+
+/**
+ Initializes an `AFHTTPRequestOperationManager` object with the specified base URL.
+
+ This is the designated initializer.
+
+ @param url The base URL for the HTTP client.
+
+ @return The newly-initialized HTTP client
+ */
+- (instancetype)initWithBaseURL:(nullable NSURL *)url NS_DESIGNATED_INITIALIZER;
+
+///---------------------------------------
+/// @name Managing HTTP Request Operations
+///---------------------------------------
+
+/**
+ Creates an `AFHTTPRequestOperation`, and sets the response serializers to that of the HTTP client.
+
+ @param request The request object to be loaded asynchronously during execution of the operation.
+ @param success A block object to be executed when the request operation finishes successfully. This block has no return value and takes two arguments: the created request operation and the object created from the response data of request.
+ @param failure A block object to be executed when the request operation finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes two arguments:, the created request operation and the `NSError` object describing the network or parsing error that occurred.
+ */
+- (AFHTTPRequestOperation *)HTTPRequestOperationWithRequest:(NSURLRequest *)request
+                                                    success:(nullable void (^)(AFHTTPRequestOperation *operation, id responseObject))success
+                                                    failure:(nullable void (^)(AFHTTPRequestOperation *operation, NSError *error))failure;
+
+///---------------------------
+/// @name Making HTTP Requests
+///---------------------------
+
+/**
+ Creates and runs an `AFHTTPRequestOperation` with a `GET` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param success A block object to be executed when the request operation finishes successfully. This block has no return value and takes two arguments: the request operation, and the response object created by the client response serializer.
+ @param failure A block object to be executed when the request operation finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the request operation and the error describing the network or parsing error that occurred.
+
+ @see -HTTPRequestOperationWithRequest:success:failure:
+ */
+- (nullable AFHTTPRequestOperation *)GET:(NSString *)URLString
+                     parameters:(nullable id)parameters
+                        success:(nullable void (^)(AFHTTPRequestOperation *operation, id responseObject))success
+                        failure:(nullable void (^)(AFHTTPRequestOperation * __nullable operation, NSError *error))failure;
+
+/**
+ Creates and runs an `AFHTTPRequestOperation` with a `HEAD` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param success A block object to be executed when the request operation finishes successfully. This block has no return value and takes a single arguments: the request operation.
+ @param failure A block object to be executed when the request operation finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the request operation and the error describing the network or parsing error that occurred.
+
+ @see -HTTPRequestOperationWithRequest:success:failure:
+ */
+- (nullable AFHTTPRequestOperation *)HEAD:(NSString *)URLString
+                      parameters:(nullable id)parameters
+                         success:(nullable void (^)(AFHTTPRequestOperation *operation))success
+                         failure:(nullable void (^)(AFHTTPRequestOperation * __nullable operation, NSError *error))failure;
+
+/**
+ Creates and runs an `AFHTTPRequestOperation` with a `POST` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param success A block object to be executed when the request operation finishes successfully. This block has no return value and takes two arguments: the request operation, and the response object created by the client response serializer.
+ @param failure A block object to be executed when the request operation finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the request operation and the error describing the network or parsing error that occurred.
+
+ @see -HTTPRequestOperationWithRequest:success:failure:
+ */
+- (nullable AFHTTPRequestOperation *)POST:(NSString *)URLString
+                      parameters:(nullable id)parameters
+                         success:(nullable void (^)(AFHTTPRequestOperation *operation, id responseObject))success
+                         failure:(nullable void (^)(AFHTTPRequestOperation * __nullable operation, NSError *error))failure;
+
+/**
+ Creates and runs an `AFHTTPRequestOperation` with a multipart `POST` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param block A block that takes a single argument and appends data to the HTTP body. The block argument is an object adopting the `AFMultipartFormData` protocol.
+ @param success A block object to be executed when the request operation finishes successfully. This block has no return value and takes two arguments: the request operation, and the response object created by the client response serializer.
+ @param failure A block object to be executed when the request operation finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the request operation and the error describing the network or parsing error that occurred.
+
+ @see -HTTPRequestOperationWithRequest:success:failure:
+ */
+- (nullable AFHTTPRequestOperation *)POST:(NSString *)URLString
+                      parameters:(nullable id)parameters
+       constructingBodyWithBlock:(nullable void (^)(id <AFMultipartFormData> formData))block
+                         success:(nullable void (^)(AFHTTPRequestOperation *operation, id responseObject))success
+                         failure:(nullable void (^)(AFHTTPRequestOperation * __nullable operation, NSError *error))failure;
+
+/**
+ Creates and runs an `AFHTTPRequestOperation` with a `PUT` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param success A block object to be executed when the request operation finishes successfully. This block has no return value and takes two arguments: the request operation, and the response object created by the client response serializer.
+ @param failure A block object to be executed when the request operation finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the request operation and the error describing the network or parsing error that occurred.
+
+ @see -HTTPRequestOperationWithRequest:success:failure:
+ */
+- (nullable AFHTTPRequestOperation *)PUT:(NSString *)URLString
+                     parameters:(nullable id)parameters
+                        success:(nullable void (^)(AFHTTPRequestOperation *operation, id responseObject))success
+                        failure:(nullable void (^)(AFHTTPRequestOperation * __nullable operation, NSError *error))failure;
+
+/**
+ Creates and runs an `AFHTTPRequestOperation` with a `PATCH` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param success A block object to be executed when the request operation finishes successfully. This block has no return value and takes two arguments: the request operation, and the response object created by the client response serializer.
+ @param failure A block object to be executed when the request operation finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the request operation and the error describing the network or parsing error that occurred.
+
+ @see -HTTPRequestOperationWithRequest:success:failure:
+ */
+- (nullable AFHTTPRequestOperation *)PATCH:(NSString *)URLString
+                       parameters:(nullable id)parameters
+                          success:(nullable void (^)(AFHTTPRequestOperation *operation, id responseObject))success
+                          failure:(nullable void (^)(AFHTTPRequestOperation * __nullable operation, NSError *error))failure;
+
+/**
+ Creates and runs an `AFHTTPRequestOperation` with a `DELETE` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param success A block object to be executed when the request operation finishes successfully. This block has no return value and takes two arguments: the request operation, and the response object created by the client response serializer.
+ @param failure A block object to be executed when the request operation finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the request operation and the error describing the network or parsing error that occurred.
+
+ @see -HTTPRequestOperationWithRequest:success:failure:
+ */
+- (nullable AFHTTPRequestOperation *)DELETE:(NSString *)URLString
+                        parameters:(nullable id)parameters
+                           success:(nullable void (^)(AFHTTPRequestOperation *operation, id responseObject))success
+                           failure:(nullable void (^)(AFHTTPRequestOperation * __nullable operation, NSError *error))failure;
+
+@end
+
+NS_ASSUME_NONNULL_END

Example/Pods/AFNetworking/AFNetworking/AFHTTPRequestOperationManager.m

+// AFHTTPRequestOperationManager.m
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+
+#import "AFHTTPRequestOperationManager.h"
+#import "AFHTTPRequestOperation.h"
+
+#import <Availability.h>
+#import <Security/Security.h>
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+#import <UIKit/UIKit.h>
+#endif
+
+@interface AFHTTPRequestOperationManager ()
+@property (readwrite, nonatomic, strong) NSURL *baseURL;
+@end
+
+@implementation AFHTTPRequestOperationManager
+
++ (instancetype)manager {
+    return [[self alloc] initWithBaseURL:nil];
+}
+
+- (instancetype)init {
+    return [self initWithBaseURL:nil];
+}
+
+- (instancetype)initWithBaseURL:(NSURL *)url {
+    self = [super init];
+    if (!self) {
+        return nil;
+    }
+
+    // Ensure terminal slash for baseURL path, so that NSURL +URLWithString:relativeToURL: works as expected
+    if ([[url path] length] > 0 && ![[url absoluteString] hasSuffix:@"/"]) {
+        url = [url URLByAppendingPathComponent:@""];
+    }
+
+    self.baseURL = url;
+
+    self.requestSerializer = [AFHTTPRequestSerializer serializer];
+    self.responseSerializer = [AFJSONResponseSerializer serializer];
+
+    self.securityPolicy = [AFSecurityPolicy defaultPolicy];
+
+    self.reachabilityManager = [AFNetworkReachabilityManager sharedManager];
+
+    self.operationQueue = [[NSOperationQueue alloc] init];
+
+    self.shouldUseCredentialStorage = YES;
+
+    return self;
+}
+
+#pragma mark -
+
+#ifdef _SYSTEMCONFIGURATION_H
+#endif
+
+- (void)setRequestSerializer:(AFHTTPRequestSerializer <AFURLRequestSerialization> *)requestSerializer {
+    NSParameterAssert(requestSerializer);
+
+    _requestSerializer = requestSerializer;
+}
+
+- (void)setResponseSerializer:(AFHTTPResponseSerializer <AFURLResponseSerialization> *)responseSerializer {
+    NSParameterAssert(responseSerializer);
+
+    _responseSerializer = responseSerializer;
+}
+
+#pragma mark -
+
+- (AFHTTPRequestOperation *)HTTPRequestOperationWithHTTPMethod:(NSString *)method
+                                                     URLString:(NSString *)URLString
+                                                    parameters:(id)parameters
+                                                       success:(void (^)(AFHTTPRequestOperation *operation, id responseObject))success
+                                                       failure:(void (^)(AFHTTPRequestOperation *operation, NSError *error))failure
+{
+    NSError *serializationError = nil;
+    NSMutableURLRequest *request = [self.requestSerializer requestWithMethod:method URLString:[[NSURL URLWithString:URLString relativeToURL:self.baseURL] absoluteString] parameters:parameters error:&serializationError];
+    if (serializationError) {
+        if (failure) {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+            dispatch_async(self.completionQueue ?: dispatch_get_main_queue(), ^{
+                failure(nil, serializationError);
+            });
+#pragma clang diagnostic pop
+        }
+
+        return nil;
+    }
+
+    return [self HTTPRequestOperationWithRequest:request success:success failure:failure];
+}
+
+- (AFHTTPRequestOperation *)HTTPRequestOperationWithRequest:(NSURLRequest *)request
+                                                    success:(void (^)(AFHTTPRequestOperation *operation, id responseObject))success
+                                                    failure:(void (^)(AFHTTPRequestOperation *operation, NSError *error))failure
+{
+    AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
+    operation.responseSerializer = self.responseSerializer;
+    operation.shouldUseCredentialStorage = self.shouldUseCredentialStorage;
+    operation.credential = self.credential;
+    operation.securityPolicy = self.securityPolicy;
+
+    [operation setCompletionBlockWithSuccess:success failure:failure];
+    operation.completionQueue = self.completionQueue;
+    operation.completionGroup = self.completionGroup;
+
+    return operation;
+}
+
+#pragma mark -
+
+- (AFHTTPRequestOperation *)GET:(NSString *)URLString
+                     parameters:(id)parameters
+                        success:(void (^)(AFHTTPRequestOperation *operation, id responseObject))success
+                        failure:(void (^)(AFHTTPRequestOperation *operation, NSError *error))failure
+{
+    AFHTTPRequestOperation *operation = [self HTTPRequestOperationWithHTTPMethod:@"GET" URLString:URLString parameters:parameters success:success failure:failure];
+
+    [self.operationQueue addOperation:operation];
+
+    return operation;
+}
+
+- (AFHTTPRequestOperation *)HEAD:(NSString *)URLString
+                      parameters:(id)parameters
+                         success:(void (^)(AFHTTPRequestOperation *operation))success
+                         failure:(void (^)(AFHTTPRequestOperation *operation, NSError *error))failure
+{
+    AFHTTPRequestOperation *operation = [self HTTPRequestOperationWithHTTPMethod:@"HEAD" URLString:URLString parameters:parameters success:^(AFHTTPRequestOperation *requestOperation, __unused id responseObject) {
+        if (success) {
+            success(requestOperation);
+        }
+    } failure:failure];
+
+    [self.operationQueue addOperation:operation];
+
+    return operation;
+}
+
+- (AFHTTPRequestOperation *)POST:(NSString *)URLString
+                      parameters:(id)parameters
+                         success:(void (^)(AFHTTPRequestOperation *operation, id responseObject))success
+                         failure:(void (^)(AFHTTPRequestOperation *operation, NSError *error))failure
+{
+    AFHTTPRequestOperation *operation = [self HTTPRequestOperationWithHTTPMethod:@"POST" URLString:URLString parameters:parameters success:success failure:failure];
+
+    [self.operationQueue addOperation:operation];
+
+    return operation;
+}
+
+- (AFHTTPRequestOperation *)POST:(NSString *)URLString
+                      parameters:(id)parameters
+       constructingBodyWithBlock:(void (^)(id <AFMultipartFormData> formData))block
+                         success:(void (^)(AFHTTPRequestOperation *operation, id responseObject))success
+                         failure:(void (^)(AFHTTPRequestOperation *operation, NSError *error))failure
+{
+    NSError *serializationError = nil;
+    NSMutableURLRequest *request = [self.requestSerializer multipartFormRequestWithMethod:@"POST" URLString:[[NSURL URLWithString:URLString relativeToURL:self.baseURL] absoluteString] parameters:parameters constructingBodyWithBlock:block error:&serializationError];
+    if (serializationError) {
+        if (failure) {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+            dispatch_async(self.completionQueue ?: dispatch_get_main_queue(), ^{
+                failure(nil, serializationError);
+            });
+#pragma clang diagnostic pop
+        }
+
+        return nil;
+    }
+
+    AFHTTPRequestOperation *operation = [self HTTPRequestOperationWithRequest:request success:success failure:failure];
+
+    [self.operationQueue addOperation:operation];
+
+    return operation;
+}
+
+- (AFHTTPRequestOperation *)PUT:(NSString *)URLString
+                     parameters:(id)parameters
+                        success:(void (^)(AFHTTPRequestOperation *operation, id responseObject))success
+                        failure:(void (^)(AFHTTPRequestOperation *operation, NSError *error))failure
+{
+    AFHTTPRequestOperation *operation = [self HTTPRequestOperationWithHTTPMethod:@"PUT" URLString:URLString parameters:parameters success:success failure:failure];
+
+    [self.operationQueue addOperation:operation];
+
+    return operation;
+}
+
+- (AFHTTPRequestOperation *)PATCH:(NSString *)URLString
+                       parameters:(id)parameters
+                          success:(void (^)(AFHTTPRequestOperation *operation, id responseObject))success
+                          failure:(void (^)(AFHTTPRequestOperation *operation, NSError *error))failure
+{
+    AFHTTPRequestOperation *operation = [self HTTPRequestOperationWithHTTPMethod:@"PATCH" URLString:URLString parameters:parameters success:success failure:failure];
+
+    [self.operationQueue addOperation:operation];
+
+    return operation;
+}
+
+- (AFHTTPRequestOperation *)DELETE:(NSString *)URLString
+                        parameters:(id)parameters
+                           success:(void (^)(AFHTTPRequestOperation *operation, id responseObject))success
+                           failure:(void (^)(AFHTTPRequestOperation *operation, NSError *error))failure
+{
+    AFHTTPRequestOperation *operation = [self HTTPRequestOperationWithHTTPMethod:@"DELETE" URLString:URLString parameters:parameters success:success failure:failure];
+
+    [self.operationQueue addOperation:operation];
+
+    return operation;
+}
+
+#pragma mark - NSObject
+
+- (NSString *)description {
+    return [NSString stringWithFormat:@"<%@: %p, baseURL: %@, operationQueue: %@>", NSStringFromClass([self class]), self, [self.baseURL absoluteString], self.operationQueue];
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+    return YES;
+}
+
+- (id)initWithCoder:(NSCoder *)decoder {
+    NSURL *baseURL = [decoder decodeObjectForKey:NSStringFromSelector(@selector(baseURL))];
+
+    self = [self initWithBaseURL:baseURL];
+    if (!self) {
+        return nil;
+    }
+
+    self.requestSerializer = [decoder decodeObjectOfClass:[AFHTTPRequestSerializer class] forKey:NSStringFromSelector(@selector(requestSerializer))];
+    self.responseSerializer = [decoder decodeObjectOfClass:[AFHTTPResponseSerializer class] forKey:NSStringFromSelector(@selector(responseSerializer))];
+    AFSecurityPolicy *decodedPolicy = [decoder decodeObjectOfClass:[AFSecurityPolicy class] forKey:NSStringFromSelector(@selector(securityPolicy))];
+    if (decodedPolicy) {
+        self.securityPolicy = decodedPolicy;
+    }
+
+    return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+    [coder encodeObject:self.baseURL forKey:NSStringFromSelector(@selector(baseURL))];
+    [coder encodeObject:self.requestSerializer forKey:NSStringFromSelector(@selector(requestSerializer))];
+    [coder encodeObject:self.responseSerializer forKey:NSStringFromSelector(@selector(responseSerializer))];
+    [coder encodeObject:self.securityPolicy forKey:NSStringFromSelector(@selector(securityPolicy))];
+}
+
+#pragma mark - NSCopying
+
+- (id)copyWithZone:(NSZone *)zone {
+    AFHTTPRequestOperationManager *HTTPClient = [[[self class] allocWithZone:zone] initWithBaseURL:self.baseURL];
+
+    HTTPClient.requestSerializer = [self.requestSerializer copyWithZone:zone];
+    HTTPClient.responseSerializer = [self.responseSerializer copyWithZone:zone];
+    HTTPClient.securityPolicy = [self.securityPolicy copyWithZone:zone];
+
+    return HTTPClient;
+}
+
+@end

Example/Pods/AFNetworking/AFNetworking/AFHTTPSessionManager.h

+// AFHTTPSessionManager.h
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+#if !TARGET_OS_WATCH
+#import <SystemConfiguration/SystemConfiguration.h>
+#endif
+#import <Availability.h>
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED
+#import <MobileCoreServices/MobileCoreServices.h>
+#else
+#import <CoreServices/CoreServices.h>
+#endif
+
+#import "AFURLSessionManager.h"
+
+#ifndef NS_DESIGNATED_INITIALIZER
+#if __has_attribute(objc_designated_initializer)
+#define NS_DESIGNATED_INITIALIZER __attribute__((objc_designated_initializer))
+#else
+#define NS_DESIGNATED_INITIALIZER
+#endif
+#endif
+
+/**
+ `AFHTTPSessionManager` is a subclass of `AFURLSessionManager` with convenience methods for making HTTP requests. When a `baseURL` is provided, requests made with the `GET` / `POST` / et al. convenience methods can be made with relative paths.
+
+ ## Subclassing Notes
+
+ Developers targeting iOS 7 or Mac OS X 10.9 or later that deal extensively with a web service are encouraged to subclass `AFHTTPSessionManager`, providing a class method that returns a shared singleton object on which authentication and other configuration can be shared across the application.
+
+ For developers targeting iOS 6 or Mac OS X 10.8 or earlier, `AFHTTPRequestOperationManager` may be used to similar effect.
+
+ ## Methods to Override
+
+ To change the behavior of all data task operation construction, which is also used in the `GET` / `POST` / et al. convenience methods, override `dataTaskWithRequest:completionHandler:`.
+
+ ## Serialization
+
+ Requests created by an HTTP client will contain default headers and encode parameters according to the `requestSerializer` property, which is an object conforming to `<AFURLRequestSerialization>`.
+
+ Responses received from the server are automatically validated and serialized by the `responseSerializers` property, which is an object conforming to `<AFURLResponseSerialization>`
+
+ ## URL Construction Using Relative Paths
+
+ For HTTP convenience methods, the request serializer constructs URLs from the path relative to the `-baseURL`, using `NSURL +URLWithString:relativeToURL:`, when provided. If `baseURL` is `nil`, `path` needs to resolve to a valid `NSURL` object using `NSURL +URLWithString:`.
+
+ Below are a few examples of how `baseURL` and relative paths interact:
+
+    NSURL *baseURL = [NSURL URLWithString:@"http://example.com/v1/"];
+    [NSURL URLWithString:@"foo" relativeToURL:baseURL];                  // http://example.com/v1/foo
+    [NSURL URLWithString:@"foo?bar=baz" relativeToURL:baseURL];          // http://example.com/v1/foo?bar=baz
+    [NSURL URLWithString:@"/foo" relativeToURL:baseURL];                 // http://example.com/foo
+    [NSURL URLWithString:@"foo/" relativeToURL:baseURL];                 // http://example.com/v1/foo
+    [NSURL URLWithString:@"/foo/" relativeToURL:baseURL];                // http://example.com/foo/
+    [NSURL URLWithString:@"http://example2.com/" relativeToURL:baseURL]; // http://example2.com/
+
+ Also important to note is that a trailing slash will be added to any `baseURL` without one. This would otherwise cause unexpected behavior when constructing URLs using paths without a leading slash.
+
+ @warning Managers for background sessions must be owned for the duration of their use. This can be accomplished by creating an application-wide or shared singleton instance.
+ */
+
+#if (defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 70000) || (defined(__MAC_OS_X_VERSION_MAX_ALLOWED) && __MAC_OS_X_VERSION_MAX_ALLOWED >= 1090) || TARGET_OS_WATCH
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface AFHTTPSessionManager : AFURLSessionManager <NSSecureCoding, NSCopying>
+
+/**
+ The URL used to construct requests from relative paths in methods like `requestWithMethod:URLString:parameters:`, and the `GET` / `POST` / et al. convenience methods.
+ */
+@property (readonly, nonatomic, strong, nullable) NSURL *baseURL;
+
+/**
+ Requests created with `requestWithMethod:URLString:parameters:` & `multipartFormRequestWithMethod:URLString:parameters:constructingBodyWithBlock:` are constructed with a set of default headers using a parameter serialization specified by this property. By default, this is set to an instance of `AFHTTPRequestSerializer`, which serializes query string parameters for `GET`, `HEAD`, and `DELETE` requests, or otherwise URL-form-encodes HTTP message bodies.
+
+ @warning `requestSerializer` must not be `nil`.
+ */
+@property (nonatomic, strong) AFHTTPRequestSerializer <AFURLRequestSerialization> * requestSerializer;
+
+/**
+ Responses sent from the server in data tasks created with `dataTaskWithRequest:success:failure:` and run using the `GET` / `POST` / et al. convenience methods are automatically validated and serialized by the response serializer. By default, this property is set to an instance of `AFJSONResponseSerializer`.
+
+ @warning `responseSerializer` must not be `nil`.
+ */
+@property (nonatomic, strong) AFHTTPResponseSerializer <AFURLResponseSerialization> * responseSerializer;
+
+///---------------------
+/// @name Initialization
+///---------------------
+
+/**
+ Creates and returns an `AFHTTPSessionManager` object.
+ */
++ (instancetype)manager;
+
+/**
+ Initializes an `AFHTTPSessionManager` object with the specified base URL.
+
+ @param url The base URL for the HTTP client.
+
+ @return The newly-initialized HTTP client
+ */
+- (instancetype)initWithBaseURL:(nullable NSURL *)url;
+
+/**
+ Initializes an `AFHTTPSessionManager` object with the specified base URL.
+
+ This is the designated initializer.
+
+ @param url The base URL for the HTTP client.
+ @param configuration The configuration used to create the managed session.
+
+ @return The newly-initialized HTTP client
+ */
+- (instancetype)initWithBaseURL:(nullable NSURL *)url
+           sessionConfiguration:(nullable NSURLSessionConfiguration *)configuration NS_DESIGNATED_INITIALIZER;
+
+///---------------------------
+/// @name Making HTTP Requests
+///---------------------------
+
+/**
+ Creates and runs an `NSURLSessionDataTask` with a `GET` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param success A block object to be executed when the task finishes successfully. This block has no return value and takes two arguments: the data task, and the response object created by the client response serializer.
+ @param failure A block object to be executed when the task finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the data task and the error describing the network or parsing error that occurred.
+
+ @see -dataTaskWithRequest:completionHandler:
+ */
+- (nullable NSURLSessionDataTask *)GET:(NSString *)URLString
+                   parameters:(nullable id)parameters
+                      success:(nullable void (^)(NSURLSessionDataTask *task, id responseObject))success
+                      failure:(nullable void (^)(NSURLSessionDataTask * __nullable task, NSError *error))failure;
+
+/**
+ Creates and runs an `NSURLSessionDataTask` with a `HEAD` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param success A block object to be executed when the task finishes successfully. This block has no return value and takes a single arguments: the data task.
+ @param failure A block object to be executed when the task finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the data task and the error describing the network or parsing error that occurred.
+
+ @see -dataTaskWithRequest:completionHandler:
+ */
+- (nullable NSURLSessionDataTask *)HEAD:(NSString *)URLString
+                    parameters:(nullable id)parameters
+                       success:(nullable void (^)(NSURLSessionDataTask *task))success
+                       failure:(nullable void (^)(NSURLSessionDataTask * __nullable task, NSError *error))failure;
+
+/**
+ Creates and runs an `NSURLSessionDataTask` with a `POST` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param success A block object to be executed when the task finishes successfully. This block has no return value and takes two arguments: the data task, and the response object created by the client response serializer.
+ @param failure A block object to be executed when the task finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the data task and the error describing the network or parsing error that occurred.
+
+ @see -dataTaskWithRequest:completionHandler:
+ */
+- (nullable NSURLSessionDataTask *)POST:(NSString *)URLString
+                    parameters:(nullable id)parameters
+                       success:(nullable void (^)(NSURLSessionDataTask *task, id responseObject))success
+                       failure:(nullable void (^)(NSURLSessionDataTask * __nullable task, NSError *error))failure;
+
+/**
+ Creates and runs an `NSURLSessionDataTask` with a multipart `POST` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param block A block that takes a single argument and appends data to the HTTP body. The block argument is an object adopting the `AFMultipartFormData` protocol.
+ @param success A block object to be executed when the task finishes successfully. This block has no return value and takes two arguments: the data task, and the response object created by the client response serializer.
+ @param failure A block object to be executed when the task finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the data task and the error describing the network or parsing error that occurred.
+
+ @see -dataTaskWithRequest:completionHandler:
+ */
+- (nullable NSURLSessionDataTask *)POST:(NSString *)URLString
+                    parameters:(nullable id)parameters
+     constructingBodyWithBlock:(nullable void (^)(id <AFMultipartFormData> formData))block
+                       success:(nullable void (^)(NSURLSessionDataTask *task, id responseObject))success
+                       failure:(nullable void (^)(NSURLSessionDataTask * __nullable task, NSError *error))failure;
+
+/**
+ Creates and runs an `NSURLSessionDataTask` with a `PUT` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param success A block object to be executed when the task finishes successfully. This block has no return value and takes two arguments: the data task, and the response object created by the client response serializer.
+ @param failure A block object to be executed when the task finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the data task and the error describing the network or parsing error that occurred.
+
+ @see -dataTaskWithRequest:completionHandler:
+ */
+- (nullable NSURLSessionDataTask *)PUT:(NSString *)URLString
+                   parameters:(nullable id)parameters
+                      success:(nullable void (^)(NSURLSessionDataTask *task, id responseObject))success
+                      failure:(nullable void (^)(NSURLSessionDataTask * __nullable task, NSError *error))failure;
+
+/**
+ Creates and runs an `NSURLSessionDataTask` with a `PATCH` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param success A block object to be executed when the task finishes successfully. This block has no return value and takes two arguments: the data task, and the response object created by the client response serializer.
+ @param failure A block object to be executed when the task finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the data task and the error describing the network or parsing error that occurred.
+
+ @see -dataTaskWithRequest:completionHandler:
+ */
+- (nullable NSURLSessionDataTask *)PATCH:(NSString *)URLString
+                     parameters:(nullable id)parameters
+                        success:(nullable void (^)(NSURLSessionDataTask *task, id responseObject))success
+                        failure:(nullable void (^)(NSURLSessionDataTask * __nullable task, NSError *error))failure;
+
+/**
+ Creates and runs an `NSURLSessionDataTask` with a `DELETE` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param success A block object to be executed when the task finishes successfully. This block has no return value and takes two arguments: the data task, and the response object created by the client response serializer.
+ @param failure A block object to be executed when the task finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the data task and the error describing the network or parsing error that occurred.
+
+ @see -dataTaskWithRequest:completionHandler:
+ */
+- (nullable NSURLSessionDataTask *)DELETE:(NSString *)URLString
+                      parameters:(nullable id)parameters
+                         success:(nullable void (^)(NSURLSessionDataTask *task, id responseObject))success
+                         failure:(nullable void (^)(NSURLSessionDataTask * __nullable task, NSError *error))failure;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif

Example/Pods/AFNetworking/AFNetworking/AFHTTPSessionManager.m

+// AFHTTPSessionManager.m
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "AFHTTPSessionManager.h"
+
+#if (defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 70000) || (defined(__MAC_OS_X_VERSION_MAX_ALLOWED) && __MAC_OS_X_VERSION_MAX_ALLOWED >= 1090) || TARGET_WATCH_OS
+
+#import "AFURLRequestSerialization.h"
+#import "AFURLResponseSerialization.h"
+
+#import <Availability.h>
+#import <Security/Security.h>
+
+#ifdef _SYSTEMCONFIGURATION_H
+#import <netinet/in.h>
+#import <netinet6/in6.h>
+#import <arpa/inet.h>
+#import <ifaddrs.h>
+#import <netdb.h>
+#endif
+
+#if TARGET_OS_IOS
+#import <UIKit/UIKit.h>
+#elif TARGET_OS_WATCH
+#import <WatchKit/WatchKit.h>
+#endif
+
+@interface AFHTTPSessionManager ()
+@property (readwrite, nonatomic, strong) NSURL *baseURL;
+@end
+
+@implementation AFHTTPSessionManager
+@dynamic responseSerializer;
+
++ (instancetype)manager {
+    return [[[self class] alloc] initWithBaseURL:nil];
+}
+
+- (instancetype)init {
+    return [self initWithBaseURL:nil];
+}
+
+- (instancetype)initWithBaseURL:(NSURL *)url {
+    return [self initWithBaseURL:url sessionConfiguration:nil];
+}
+
+- (instancetype)initWithSessionConfiguration:(NSURLSessionConfiguration *)configuration {
+    return [self initWithBaseURL:nil sessionConfiguration:configuration];
+}
+
+- (instancetype)initWithBaseURL:(NSURL *)url
+           sessionConfiguration:(NSURLSessionConfiguration *)configuration
+{
+    self = [super initWithSessionConfiguration:configuration];
+    if (!self) {
+        return nil;
+    }
+
+    // Ensure terminal slash for baseURL path, so that NSURL +URLWithString:relativeToURL: works as expected
+    if ([[url path] length] > 0 && ![[url absoluteString] hasSuffix:@"/"]) {
+        url = [url URLByAppendingPathComponent:@""];
+    }
+
+    self.baseURL = url;
+
+    self.requestSerializer = [AFHTTPRequestSerializer serializer];
+    self.responseSerializer = [AFJSONResponseSerializer serializer];
+
+    return self;
+}
+
+#pragma mark -
+
+#ifdef _SYSTEMCONFIGURATION_H
+#endif
+
+- (void)setRequestSerializer:(AFHTTPRequestSerializer <AFURLRequestSerialization> *)requestSerializer {
+    NSParameterAssert(requestSerializer);
+
+    _requestSerializer = requestSerializer;
+}
+
+- (void)setResponseSerializer:(AFHTTPResponseSerializer <AFURLResponseSerialization> *)responseSerializer {
+    NSParameterAssert(responseSerializer);
+
+    [super setResponseSerializer:responseSerializer];
+}
+
+#pragma mark -
+
+- (NSURLSessionDataTask *)GET:(NSString *)URLString
+                   parameters:(id)parameters
+                      success:(void (^)(NSURLSessionDataTask *task, id responseObject))success
+                      failure:(void (^)(NSURLSessionDataTask *task, NSError *error))failure
+{
+    NSURLSessionDataTask *dataTask = [self dataTaskWithHTTPMethod:@"GET" URLString:URLString parameters:parameters success:success failure:failure];
+
+    [dataTask resume];
+
+    return dataTask;
+}
+
+- (NSURLSessionDataTask *)HEAD:(NSString *)URLString
+                    parameters:(id)parameters
+                       success:(void (^)(NSURLSessionDataTask *task))success
+                       failure:(void (^)(NSURLSessionDataTask *task, NSError *error))failure
+{
+    NSURLSessionDataTask *dataTask = [self dataTaskWithHTTPMethod:@"HEAD" URLString:URLString parameters:parameters success:^(NSURLSessionDataTask *task, __unused id responseObject) {
+        if (success) {
+            success(task);
+        }
+    } failure:failure];
+
+    [dataTask resume];
+
+    return dataTask;
+}
+
+- (NSURLSessionDataTask *)POST:(NSString *)URLString
+                    parameters:(id)parameters
+                       success:(void (^)(NSURLSessionDataTask *task, id responseObject))success
+                       failure:(void (^)(NSURLSessionDataTask *task, NSError *error))failure
+{
+    NSURLSessionDataTask *dataTask = [self dataTaskWithHTTPMethod:@"POST" URLString:URLString parameters:parameters success:success failure:failure];
+
+    [dataTask resume];
+
+    return dataTask;
+}
+
+- (NSURLSessionDataTask *)POST:(NSString *)URLString
+                    parameters:(id)parameters
+     constructingBodyWithBlock:(void (^)(id <AFMultipartFormData> formData))block
+                       success:(void (^)(NSURLSessionDataTask *task, id responseObject))success
+                       failure:(void (^)(NSURLSessionDataTask *task, NSError *error))failure
+{
+    NSError *serializationError = nil;
+    NSMutableURLRequest *request = [self.requestSerializer multipartFormRequestWithMethod:@"POST" URLString:[[NSURL URLWithString:URLString relativeToURL:self.baseURL] absoluteString] parameters:parameters constructingBodyWithBlock:block error:&serializationError];
+    if (serializationError) {
+        if (failure) {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+            dispatch_async(self.completionQueue ?: dispatch_get_main_queue(), ^{
+                failure(nil, serializationError);
+            });
+#pragma clang diagnostic pop
+        }
+
+        return nil;
+    }
+
+    __block NSURLSessionDataTask *task = [self uploadTaskWithStreamedRequest:request progress:nil completionHandler:^(NSURLResponse * __unused response, id responseObject, NSError *error) {
+        if (error) {
+            if (failure) {
+                failure(task, error);
+            }
+        } else {
+            if (success) {
+                success(task, responseObject);
+            }
+        }
+    }];
+
+    [task resume];
+
+    return task;
+}
+
+- (NSURLSessionDataTask *)PUT:(NSString *)URLString
+                   parameters:(id)parameters
+                      success:(void (^)(NSURLSessionDataTask *task, id responseObject))success
+                      failure:(void (^)(NSURLSessionDataTask *task, NSError *error))failure
+{
+    NSURLSessionDataTask *dataTask = [self dataTaskWithHTTPMethod:@"PUT" URLString:URLString parameters:parameters success:success failure:failure];
+
+    [dataTask resume];
+
+    return dataTask;
+}
+
+- (NSURLSessionDataTask *)PATCH:(NSString *)URLString
+                     parameters:(id)parameters
+                        success:(void (^)(NSURLSessionDataTask *task, id responseObject))success
+                        failure:(void (^)(NSURLSessionDataTask *task, NSError *error))failure
+{
+    NSURLSessionDataTask *dataTask = [self dataTaskWithHTTPMethod:@"PATCH" URLString:URLString parameters:parameters success:success failure:failure];
+
+    [dataTask resume];
+
+    return dataTask;
+}
+
+- (NSURLSessionDataTask *)DELETE:(NSString *)URLString
+                      parameters:(id)parameters
+                         success:(void (^)(NSURLSessionDataTask *task, id responseObject))success
+                         failure:(void (^)(NSURLSessionDataTask *task, NSError *error))failure
+{
+    NSURLSessionDataTask *dataTask = [self dataTaskWithHTTPMethod:@"DELETE" URLString:URLString parameters:parameters success:success failure:failure];
+
+    [dataTask resume];
+
+    return dataTask;
+}
+
+- (NSURLSessionDataTask *)dataTaskWithHTTPMethod:(NSString *)method
+                                       URLString:(NSString *)URLString
+                                      parameters:(id)parameters
+                                         success:(void (^)(NSURLSessionDataTask *, id))success
+                                         failure:(void (^)(NSURLSessionDataTask *, NSError *))failure
+{
+    NSError *serializationError = nil;
+    NSMutableURLRequest *request = [self.requestSerializer requestWithMethod:method URLString:[[NSURL URLWithString:URLString relativeToURL:self.baseURL] absoluteString] parameters:parameters error:&serializationError];
+    if (serializationError) {
+        if (failure) {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+            dispatch_async(self.completionQueue ?: dispatch_get_main_queue(), ^{
+                failure(nil, serializationError);
+            });
+#pragma clang diagnostic pop
+        }
+
+        return nil;
+    }
+
+    __block NSURLSessionDataTask *dataTask = nil;
+    dataTask = [self dataTaskWithRequest:request completionHandler:^(NSURLResponse * __unused response, id responseObject, NSError *error) {
+        if (error) {
+            if (failure) {
+                failure(dataTask, error);
+            }
+        } else {
+            if (success) {
+                success(dataTask, responseObject);
+            }
+        }
+    }];
+
+    return dataTask;
+}
+
+#pragma mark - NSObject
+
+- (NSString *)description {
+    return [NSString stringWithFormat:@"<%@: %p, baseURL: %@, session: %@, operationQueue: %@>", NSStringFromClass([self class]), self, [self.baseURL absoluteString], self.session, self.operationQueue];
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+    return YES;
+}
+
+- (id)initWithCoder:(NSCoder *)decoder {
+    NSURL *baseURL = [decoder decodeObjectOfClass:[NSURL class] forKey:NSStringFromSelector(@selector(baseURL))];
+    NSURLSessionConfiguration *configuration = [decoder decodeObjectOfClass:[NSURLSessionConfiguration class] forKey:@"sessionConfiguration"];
+    if (!configuration) {
+        NSString *configurationIdentifier = [decoder decodeObjectOfClass:[NSString class] forKey:@"identifier"];
+        if (configurationIdentifier) {
+#if (defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED >= 80000) || (defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 1100)
+            configuration = [NSURLSessionConfiguration backgroundSessionConfigurationWithIdentifier:configurationIdentifier];
+#else
+            configuration = [NSURLSessionConfiguration backgroundSessionConfiguration:configurationIdentifier];
+#endif
+        }
+    }
+
+    self = [self initWithBaseURL:baseURL sessionConfiguration:configuration];
+    if (!self) {
+        return nil;
+    }
+
+    self.requestSerializer = [decoder decodeObjectOfClass:[AFHTTPRequestSerializer class] forKey:NSStringFromSelector(@selector(requestSerializer))];
+    self.responseSerializer = [decoder decodeObjectOfClass:[AFHTTPResponseSerializer class] forKey:NSStringFromSelector(@selector(responseSerializer))];
+    AFSecurityPolicy *decodedPolicy = [decoder decodeObjectOfClass:[AFSecurityPolicy class] forKey:NSStringFromSelector(@selector(securityPolicy))];
+    if (decodedPolicy) {
+        self.securityPolicy = decodedPolicy;
+    }
+
+    return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+    [super encodeWithCoder:coder];
+
+    [coder encodeObject:self.baseURL forKey:NSStringFromSelector(@selector(baseURL))];
+    if ([self.session.configuration conformsToProtocol:@protocol(NSCoding)]) {
+        [coder encodeObject:self.session.configuration forKey:@"sessionConfiguration"];
+    } else {
+        [coder encodeObject:self.session.configuration.identifier forKey:@"identifier"];
+    }
+    [coder encodeObject:self.requestSerializer forKey:NSStringFromSelector(@selector(requestSerializer))];
+    [coder encodeObject:self.responseSerializer forKey:NSStringFromSelector(@selector(responseSerializer))];
+    [coder encodeObject:self.securityPolicy forKey:NSStringFromSelector(@selector(securityPolicy))];
+}
+
+#pragma mark - NSCopying
+
+- (id)copyWithZone:(NSZone *)zone {
+    AFHTTPSessionManager *HTTPClient = [[[self class] allocWithZone:zone] initWithBaseURL:self.baseURL sessionConfiguration:self.session.configuration];
+
+    HTTPClient.requestSerializer = [self.requestSerializer copyWithZone:zone];
+    HTTPClient.responseSerializer = [self.responseSerializer copyWithZone:zone];
+    HTTPClient.securityPolicy = [self.securityPolicy copyWithZone:zone];
+    return HTTPClient;
+}
+
+@end
+
+#endif

Example/Pods/AFNetworking/AFNetworking/AFNetworkReachabilityManager.h

+// AFNetworkReachabilityManager.h
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+
+#if !TARGET_OS_WATCH
+#import <SystemConfiguration/SystemConfiguration.h>
+
+#ifndef NS_DESIGNATED_INITIALIZER
+#if __has_attribute(objc_designated_initializer)
+#define NS_DESIGNATED_INITIALIZER __attribute__((objc_designated_initializer))
+#else
+#define NS_DESIGNATED_INITIALIZER
+#endif
+#endif
+
+typedef NS_ENUM(NSInteger, AFNetworkReachabilityStatus) {
+    AFNetworkReachabilityStatusUnknown          = -1,
+    AFNetworkReachabilityStatusNotReachable     = 0,
+    AFNetworkReachabilityStatusReachableViaWWAN = 1,
+    AFNetworkReachabilityStatusReachableViaWiFi = 2,
+};
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ `AFNetworkReachabilityManager` monitors the reachability of domains, and addresses for both WWAN and WiFi network interfaces.
+
+ Reachability can be used to determine background information about why a network operation failed, or to trigger a network operation retrying when a connection is established. It should not be used to prevent a user from initiating a network request, as it's possible that an initial request may be required to establish reachability.
+
+ See Apple's Reachability Sample Code (https://developer.apple.com/library/ios/samplecode/reachability/)
+
+ @warning Instances of `AFNetworkReachabilityManager` must be started with `-startMonitoring` before reachability status can be determined.
+ */
+@interface AFNetworkReachabilityManager : NSObject
+
+/**
+ The current network reachability status.
+ */
+@property (readonly, nonatomic, assign) AFNetworkReachabilityStatus networkReachabilityStatus;
+
+/**
+ Whether or not the network is currently reachable.
+ */
+@property (readonly, nonatomic, assign, getter = isReachable) BOOL reachable;
+
+/**
+ Whether or not the network is currently reachable via WWAN.
+ */
+@property (readonly, nonatomic, assign, getter = isReachableViaWWAN) BOOL reachableViaWWAN;
+
+/**
+ Whether or not the network is currently reachable via WiFi.
+ */
+@property (readonly, nonatomic, assign, getter = isReachableViaWiFi) BOOL reachableViaWiFi;
+
+///---------------------
+/// @name Initialization
+///---------------------
+
+/**
+ Returns the shared network reachability manager.
+ */
++ (instancetype)sharedManager;
+
+/**
+ Creates and returns a network reachability manager for the specified domain.
+
+ @param domain The domain used to evaluate network reachability.
+
+ @return An initialized network reachability manager, actively monitoring the specified domain.
+ */
++ (instancetype)managerForDomain:(NSString *)domain;
+
+/**
+ Creates and returns a network reachability manager for the socket address.
+
+ @param address The socket address (`sockaddr_in`) used to evaluate network reachability.
+
+ @return An initialized network reachability manager, actively monitoring the specified socket address.
+ */
++ (instancetype)managerForAddress:(const void *)address;
+
+/**
+ Initializes an instance of a network reachability manager from the specified reachability object.
+
+ @param reachability The reachability object to monitor.
+
+ @return An initialized network reachability manager, actively monitoring the specified reachability.
+ */
+- (instancetype)initWithReachability:(SCNetworkReachabilityRef)reachability NS_DESIGNATED_INITIALIZER;
+
+///--------------------------------------------------
+/// @name Starting & Stopping Reachability Monitoring
+///--------------------------------------------------
+
+/**
+ Starts monitoring for changes in network reachability status.
+ */
+- (void)startMonitoring;
+
+/**
+ Stops monitoring for changes in network reachability status.
+ */
+- (void)stopMonitoring;
+
+///-------------------------------------------------
+/// @name Getting Localized Reachability Description
+///-------------------------------------------------
+
+/**
+ Returns a localized string representation of the current network reachability status.
+ */
+- (NSString *)localizedNetworkReachabilityStatusString;
+
+///---------------------------------------------------
+/// @name Setting Network Reachability Change Callback
+///---------------------------------------------------
+
+/**
+ Sets a callback to be executed when the network availability of the `baseURL` host changes.
+
+ @param block A block object to be executed when the network availability of the `baseURL` host changes.. This block has no return value and takes a single argument which represents the various reachability states from the device to the `baseURL`.
+ */
+- (void)setReachabilityStatusChangeBlock:(nullable void (^)(AFNetworkReachabilityStatus status))block;
+
+@end
+
+///----------------
+/// @name Constants
+///----------------
+
+/**
+ ## Network Reachability
+
+ The following constants are provided by `AFNetworkReachabilityManager` as possible network reachability statuses.
+
+ enum {
+ AFNetworkReachabilityStatusUnknown,
+ AFNetworkReachabilityStatusNotReachable,
+ AFNetworkReachabilityStatusReachableViaWWAN,
+ AFNetworkReachabilityStatusReachableViaWiFi,
+ }
+
+ `AFNetworkReachabilityStatusUnknown`
+ The `baseURL` host reachability is not known.
+
+ `AFNetworkReachabilityStatusNotReachable`
+ The `baseURL` host cannot be reached.
+
+ `AFNetworkReachabilityStatusReachableViaWWAN`
+ The `baseURL` host can be reached via a cellular connection, such as EDGE or GPRS.
+
+ `AFNetworkReachabilityStatusReachableViaWiFi`
+ The `baseURL` host can be reached via a Wi-Fi connection.
+
+ ### Keys for Notification UserInfo Dictionary
+
+ Strings that are used as keys in a `userInfo` dictionary in a network reachability status change notification.
+
+ `AFNetworkingReachabilityNotificationStatusItem`
+ A key in the userInfo dictionary in a `AFNetworkingReachabilityDidChangeNotification` notification.
+ The corresponding value is an `NSNumber` object representing the `AFNetworkReachabilityStatus` value for the current reachability status.
+ */
+
+///--------------------
+/// @name Notifications
+///--------------------
+
+/**
+ Posted when network reachability changes.
+ This notification assigns no notification object. The `userInfo` dictionary contains an `NSNumber` object under the `AFNetworkingReachabilityNotificationStatusItem` key, representing the `AFNetworkReachabilityStatus` value for the current network reachability.
+
+ @warning In order for network reachability to be monitored, include the `SystemConfiguration` framework in the active target's "Link Binary With Library" build phase, and add `#import <SystemConfiguration/SystemConfiguration.h>` to the header prefix of the project (`Prefix.pch`).
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingReachabilityDidChangeNotification;
+FOUNDATION_EXPORT NSString * const AFNetworkingReachabilityNotificationStatusItem;
+
+///--------------------
+/// @name Functions
+///--------------------
+
+/**
+ Returns a localized string representation of an `AFNetworkReachabilityStatus` value.
+ */
+FOUNDATION_EXPORT NSString * AFStringFromNetworkReachabilityStatus(AFNetworkReachabilityStatus status);
+
+NS_ASSUME_NONNULL_END
+#endif

Example/Pods/AFNetworking/AFNetworking/AFNetworkReachabilityManager.m

+// AFNetworkReachabilityManager.m
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "AFNetworkReachabilityManager.h"
+#if !TARGET_OS_WATCH
+
+#import <netinet/in.h>
+#import <netinet6/in6.h>
+#import <arpa/inet.h>
+#import <ifaddrs.h>
+#import <netdb.h>
+
+NSString * const AFNetworkingReachabilityDidChangeNotification = @"com.alamofire.networking.reachability.change";
+NSString * const AFNetworkingReachabilityNotificationStatusItem = @"AFNetworkingReachabilityNotificationStatusItem";
+
+typedef void (^AFNetworkReachabilityStatusBlock)(AFNetworkReachabilityStatus status);
+
+NSString * AFStringFromNetworkReachabilityStatus(AFNetworkReachabilityStatus status) {
+    switch (status) {
+        case AFNetworkReachabilityStatusNotReachable:
+            return NSLocalizedStringFromTable(@"Not Reachable", @"AFNetworking", nil);
+        case AFNetworkReachabilityStatusReachableViaWWAN:
+            return NSLocalizedStringFromTable(@"Reachable via WWAN", @"AFNetworking", nil);
+        case AFNetworkReachabilityStatusReachableViaWiFi:
+            return NSLocalizedStringFromTable(@"Reachable via WiFi", @"AFNetworking", nil);
+        case AFNetworkReachabilityStatusUnknown:
+        default:
+            return NSLocalizedStringFromTable(@"Unknown", @"AFNetworking", nil);
+    }
+}
+
+static AFNetworkReachabilityStatus AFNetworkReachabilityStatusForFlags(SCNetworkReachabilityFlags flags) {
+    BOOL isReachable = ((flags & kSCNetworkReachabilityFlagsReachable) != 0);
+    BOOL needsConnection = ((flags & kSCNetworkReachabilityFlagsConnectionRequired) != 0);
+    BOOL canConnectionAutomatically = (((flags & kSCNetworkReachabilityFlagsConnectionOnDemand ) != 0) || ((flags & kSCNetworkReachabilityFlagsConnectionOnTraffic) != 0));
+    BOOL canConnectWithoutUserInteraction = (canConnectionAutomatically && (flags & kSCNetworkReachabilityFlagsInterventionRequired) == 0);
+    BOOL isNetworkReachable = (isReachable && (!needsConnection || canConnectWithoutUserInteraction));
+
+    AFNetworkReachabilityStatus status = AFNetworkReachabilityStatusUnknown;
+    if (isNetworkReachable == NO) {
+        status = AFNetworkReachabilityStatusNotReachable;
+    }
+#if	TARGET_OS_IPHONE
+    else if ((flags & kSCNetworkReachabilityFlagsIsWWAN) != 0) {
+        status = AFNetworkReachabilityStatusReachableViaWWAN;
+    }
+#endif
+    else {
+        status = AFNetworkReachabilityStatusReachableViaWiFi;
+    }
+
+    return status;
+}
+
+/**
+ * Queue a status change notification for the main thread.
+ *
+ * This is done to ensure that the notifications are received in the same order
+ * as they are sent. If notifications are sent directly, it is possible that
+ * a queued notification (for an earlier status condition) is processed after
+ * the later update, resulting in the listener being left in the wrong state.
+ */
+static void AFPostReachabilityStatusChange(SCNetworkReachabilityFlags flags, AFNetworkReachabilityStatusBlock block) {
+    AFNetworkReachabilityStatus status = AFNetworkReachabilityStatusForFlags(flags);
+    dispatch_async(dispatch_get_main_queue(), ^{
+        if (block) {
+            block(status);
+        }
+        NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+        NSDictionary *userInfo = @{ AFNetworkingReachabilityNotificationStatusItem: @(status) };
+        [notificationCenter postNotificationName:AFNetworkingReachabilityDidChangeNotification object:nil userInfo:userInfo];
+    });
+}
+
+static void AFNetworkReachabilityCallback(SCNetworkReachabilityRef __unused target, SCNetworkReachabilityFlags flags, void *info) {
+    AFPostReachabilityStatusChange(flags, (__bridge AFNetworkReachabilityStatusBlock)info);
+}
+
+static const void * AFNetworkReachabilityRetainCallback(const void *info) {
+    return Block_copy(info);
+}
+
+static void AFNetworkReachabilityReleaseCallback(const void *info) {
+    if (info) {
+        Block_release(info);
+    }
+}
+
+@interface AFNetworkReachabilityManager ()
+@property (readwrite, nonatomic, strong) id networkReachability;
+@property (readwrite, nonatomic, assign) AFNetworkReachabilityStatus networkReachabilityStatus;
+@property (readwrite, nonatomic, copy) AFNetworkReachabilityStatusBlock networkReachabilityStatusBlock;
+@end
+
+@implementation AFNetworkReachabilityManager
+
++ (instancetype)sharedManager {
+    static AFNetworkReachabilityManager *_sharedManager = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        struct sockaddr_in address;
+        bzero(&address, sizeof(address));
+        address.sin_len = sizeof(address);
+        address.sin_family = AF_INET;
+
+        _sharedManager = [self managerForAddress:&address];
+    });
+
+    return _sharedManager;
+}
+
+#ifndef __clang_analyzer__
++ (instancetype)managerForDomain:(NSString *)domain {
+    SCNetworkReachabilityRef reachability = SCNetworkReachabilityCreateWithName(kCFAllocatorDefault, [domain UTF8String]);
+
+    AFNetworkReachabilityManager *manager = [[self alloc] initWithReachability:reachability];
+
+    return manager;
+}
+#endif
+
+#ifndef __clang_analyzer__
++ (instancetype)managerForAddress:(const void *)address {
+    SCNetworkReachabilityRef reachability = SCNetworkReachabilityCreateWithAddress(kCFAllocatorDefault, (const struct sockaddr *)address);
+    AFNetworkReachabilityManager *manager = [[self alloc] initWithReachability:reachability];
+
+    return manager;
+}
+#endif
+
+- (instancetype)initWithReachability:(SCNetworkReachabilityRef)reachability {
+    self = [super init];
+    if (!self) {
+        return nil;
+    }
+
+    self.networkReachability = CFBridgingRelease(reachability);
+    self.networkReachabilityStatus = AFNetworkReachabilityStatusUnknown;
+
+    return self;
+}
+
+- (instancetype)init NS_UNAVAILABLE
+{
+    return nil;
+}
+
+- (void)dealloc {
+    [self stopMonitoring];
+}
+
+#pragma mark -
+
+- (BOOL)isReachable {
+    return [self isReachableViaWWAN] || [self isReachableViaWiFi];
+}
+
+- (BOOL)isReachableViaWWAN {
+    return self.networkReachabilityStatus == AFNetworkReachabilityStatusReachableViaWWAN;
+}
+
+- (BOOL)isReachableViaWiFi {
+    return self.networkReachabilityStatus == AFNetworkReachabilityStatusReachableViaWiFi;
+}
+
+#pragma mark -
+
+- (void)startMonitoring {
+    [self stopMonitoring];
+
+    if (!self.networkReachability) {
+        return;
+    }
+
+    __weak __typeof(self)weakSelf = self;
+    AFNetworkReachabilityStatusBlock callback = ^(AFNetworkReachabilityStatus status) {
+        __strong __typeof(weakSelf)strongSelf = weakSelf;
+
+        strongSelf.networkReachabilityStatus = status;
+        if (strongSelf.networkReachabilityStatusBlock) {
+            strongSelf.networkReachabilityStatusBlock(status);
+        }
+
+    };
+
+    id networkReachability = self.networkReachability;
+    SCNetworkReachabilityContext context = {0, (__bridge void *)callback, AFNetworkReachabilityRetainCallback, AFNetworkReachabilityReleaseCallback, NULL};
+    SCNetworkReachabilitySetCallback((__bridge SCNetworkReachabilityRef)networkReachability, AFNetworkReachabilityCallback, &context);
+    SCNetworkReachabilityScheduleWithRunLoop((__bridge SCNetworkReachabilityRef)networkReachability, CFRunLoopGetMain(), kCFRunLoopCommonModes);
+
+    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0),^{
+        SCNetworkReachabilityFlags flags;
+        if (SCNetworkReachabilityGetFlags((__bridge SCNetworkReachabilityRef)networkReachability, &flags)) {
+            AFPostReachabilityStatusChange(flags, callback);
+        }
+    });
+}
+
+- (void)stopMonitoring {
+    if (!self.networkReachability) {
+        return;
+    }
+
+    SCNetworkReachabilityUnscheduleFromRunLoop((__bridge SCNetworkReachabilityRef)self.networkReachability, CFRunLoopGetMain(), kCFRunLoopCommonModes);
+}
+
+#pragma mark -
+
+- (NSString *)localizedNetworkReachabilityStatusString {
+    return AFStringFromNetworkReachabilityStatus(self.networkReachabilityStatus);
+}
+
+#pragma mark -
+
+- (void)setReachabilityStatusChangeBlock:(void (^)(AFNetworkReachabilityStatus status))block {
+    self.networkReachabilityStatusBlock = block;
+}
+
+#pragma mark - NSKeyValueObserving
+
++ (NSSet *)keyPathsForValuesAffectingValueForKey:(NSString *)key {
+    if ([key isEqualToString:@"reachable"] || [key isEqualToString:@"reachableViaWWAN"] || [key isEqualToString:@"reachableViaWiFi"]) {
+        return [NSSet setWithObject:@"networkReachabilityStatus"];
+    }
+
+    return [super keyPathsForValuesAffectingValueForKey:key];
+}
+
+@end
+#endif

Example/Pods/AFNetworking/AFNetworking/AFNetworking.h

+// AFNetworking.h
+//
+// Copyright (c) 2013 AFNetworking (http://afnetworking.com/)
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+#import <Availability.h>
+
+#ifndef _AFNETWORKING_
+    #define _AFNETWORKING_
+
+    #import "AFURLRequestSerialization.h"
+    #import "AFURLResponseSerialization.h"
+    #import "AFSecurityPolicy.h"
+#if !TARGET_OS_WATCH
+    #import "AFNetworkReachabilityManager.h"
+    #import "AFURLConnectionOperation.h"
+    #import "AFHTTPRequestOperation.h"
+    #import "AFHTTPRequestOperationManager.h"
+#endif
+
+#if ( ( defined(__MAC_OS_X_VERSION_MAX_ALLOWED) && __MAC_OS_X_VERSION_MAX_ALLOWED >= 1090) || \
+      ( defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 70000 ) || \
+       TARGET_OS_WATCH )
+    #import "AFURLSessionManager.h"
+    #import "AFHTTPSessionManager.h"
+#endif
+
+#endif /* _AFNETWORKING_ */

Example/Pods/AFNetworking/AFNetworking/AFSecurityPolicy.h

+// AFSecurityPolicy.h
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+#import <Security/Security.h>
+
+typedef NS_ENUM(NSUInteger, AFSSLPinningMode) {
+    AFSSLPinningModeNone,
+    AFSSLPinningModePublicKey,
+    AFSSLPinningModeCertificate,
+};
+
+/**
+ `AFSecurityPolicy` evaluates server trust against pinned X.509 certificates and public keys over secure connections.
+
+ Adding pinned SSL certificates to your app helps prevent man-in-the-middle attacks and other vulnerabilities. Applications dealing with sensitive customer data or financial information are strongly encouraged to route all communication over an HTTPS connection with SSL pinning configured and enabled.
+ */
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface AFSecurityPolicy : NSObject <NSSecureCoding, NSCopying>
+
+/**
+ The criteria by which server trust should be evaluated against the pinned SSL certificates. Defaults to `AFSSLPinningModeNone`.
+ */
+@property (readonly, nonatomic, assign) AFSSLPinningMode SSLPinningMode;
+
+/**
+ The certificates used to evaluate server trust according to the SSL pinning mode. By default, this property is set to any (`.cer`) certificates included in the app bundle. Note that if you create an array with duplicate certificates, the duplicate certificates will be removed. Note that if pinning is enabled, `evaluateServerTrust:forDomain:` will return true if any pinned certificate matches.
+ */
+@property (nonatomic, strong, nullable) NSArray *pinnedCertificates;
+
+/**
+ Whether or not to trust servers with an invalid or expired SSL certificates. Defaults to `NO`.
+ */
+@property (nonatomic, assign) BOOL allowInvalidCertificates;
+
+/**
+ Whether or not to validate the domain name in the certificate's CN field. Defaults to `YES`.
+ */
+@property (nonatomic, assign) BOOL validatesDomainName;
+
+///-----------------------------------------
+/// @name Getting Specific Security Policies
+///-----------------------------------------
+
+/**
+ Returns the shared default security policy, which does not allow invalid certificates, validates domain name, and does not validate against pinned certificates or public keys.
+
+ @return The default security policy.
+ */
++ (instancetype)defaultPolicy;
+
+///---------------------
+/// @name Initialization
+///---------------------
+
+/**
+ Creates and returns a security policy with the specified pinning mode.
+
+ @param pinningMode The SSL pinning mode.
+
+ @return A new security policy.
+ */
++ (instancetype)policyWithPinningMode:(AFSSLPinningMode)pinningMode;
+
+///------------------------------
+/// @name Evaluating Server Trust
+///------------------------------
+
+/**
+ Whether or not the specified server trust should be accepted, based on the security policy.
+
+ This method should be used when responding to an authentication challenge from a server.
+
+ @param serverTrust The X.509 certificate trust of the server.
+
+ @return Whether or not to trust the server.
+
+ @warning This method has been deprecated in favor of `-evaluateServerTrust:forDomain:`.
+ */
+- (BOOL)evaluateServerTrust:(SecTrustRef)serverTrust DEPRECATED_ATTRIBUTE;
+
+/**
+ Whether or not the specified server trust should be accepted, based on the security policy.
+
+ This method should be used when responding to an authentication challenge from a server.
+
+ @param serverTrust The X.509 certificate trust of the server.
+ @param domain The domain of serverTrust. If `nil`, the domain will not be validated.
+
+ @return Whether or not to trust the server.
+ */
+- (BOOL)evaluateServerTrust:(SecTrustRef)serverTrust
+                  forDomain:(nullable NSString *)domain;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+///----------------
+/// @name Constants
+///----------------
+
+/**
+ ## SSL Pinning Modes
+
+ The following constants are provided by `AFSSLPinningMode` as possible SSL pinning modes.
+
+ enum {
+ AFSSLPinningModeNone,
+ AFSSLPinningModePublicKey,
+ AFSSLPinningModeCertificate,
+ }
+
+ `AFSSLPinningModeNone`
+ Do not used pinned certificates to validate servers.
+
+ `AFSSLPinningModePublicKey`
+ Validate host certificates against public keys of pinned certificates.
+
+ `AFSSLPinningModeCertificate`
+ Validate host certificates against pinned certificates.
+*/

Example/Pods/AFNetworking/AFNetworking/AFSecurityPolicy.m

+// AFSecurityPolicy.m
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "AFSecurityPolicy.h"
+
+#import <AssertMacros.h>
+
+#if !TARGET_OS_IOS && !TARGET_OS_WATCH
+static NSData * AFSecKeyGetData(SecKeyRef key) {
+    CFDataRef data = NULL;
+
+    __Require_noErr_Quiet(SecItemExport(key, kSecFormatUnknown, kSecItemPemArmour, NULL, &data), _out);
+
+    return (__bridge_transfer NSData *)data;
+
+_out:
+    if (data) {
+        CFRelease(data);
+    }
+
+    return nil;
+}
+#endif
+
+static BOOL AFSecKeyIsEqualToKey(SecKeyRef key1, SecKeyRef key2) {
+#if TARGET_OS_IOS || TARGET_OS_WATCH
+    return [(__bridge id)key1 isEqual:(__bridge id)key2];
+#else
+    return [AFSecKeyGetData(key1) isEqual:AFSecKeyGetData(key2)];
+#endif
+}
+
+static id AFPublicKeyForCertificate(NSData *certificate) {
+    id allowedPublicKey = nil;
+    SecCertificateRef allowedCertificate;
+    SecCertificateRef allowedCertificates[1];
+    CFArrayRef tempCertificates = nil;
+    SecPolicyRef policy = nil;
+    SecTrustRef allowedTrust = nil;
+    SecTrustResultType result;
+
+    allowedCertificate = SecCertificateCreateWithData(NULL, (__bridge CFDataRef)certificate);
+    __Require_Quiet(allowedCertificate != NULL, _out);
+
+    allowedCertificates[0] = allowedCertificate;
+    tempCertificates = CFArrayCreate(NULL, (const void **)allowedCertificates, 1, NULL);
+
+    policy = SecPolicyCreateBasicX509();
+    __Require_noErr_Quiet(SecTrustCreateWithCertificates(tempCertificates, policy, &allowedTrust), _out);
+    __Require_noErr_Quiet(SecTrustEvaluate(allowedTrust, &result), _out);
+
+    allowedPublicKey = (__bridge_transfer id)SecTrustCopyPublicKey(allowedTrust);
+
+_out:
+    if (allowedTrust) {
+        CFRelease(allowedTrust);
+    }
+
+    if (policy) {
+        CFRelease(policy);
+    }
+
+    if (tempCertificates) {
+        CFRelease(tempCertificates);
+    }
+
+    if (allowedCertificate) {
+        CFRelease(allowedCertificate);
+    }
+
+    return allowedPublicKey;
+}
+
+static BOOL AFServerTrustIsValid(SecTrustRef serverTrust) {
+    BOOL isValid = NO;
+    SecTrustResultType result;
+    __Require_noErr_Quiet(SecTrustEvaluate(serverTrust, &result), _out);
+
+    isValid = (result == kSecTrustResultUnspecified || result == kSecTrustResultProceed);
+
+_out:
+    return isValid;
+}
+
+static NSArray * AFCertificateTrustChainForServerTrust(SecTrustRef serverTrust) {
+    CFIndex certificateCount = SecTrustGetCertificateCount(serverTrust);
+    NSMutableArray *trustChain = [NSMutableArray arrayWithCapacity:(NSUInteger)certificateCount];
+
+    for (CFIndex i = 0; i < certificateCount; i++) {
+        SecCertificateRef certificate = SecTrustGetCertificateAtIndex(serverTrust, i);
+        [trustChain addObject:(__bridge_transfer NSData *)SecCertificateCopyData(certificate)];
+    }
+
+    return [NSArray arrayWithArray:trustChain];
+}
+
+static NSArray * AFPublicKeyTrustChainForServerTrust(SecTrustRef serverTrust) {
+    SecPolicyRef policy = SecPolicyCreateBasicX509();
+    CFIndex certificateCount = SecTrustGetCertificateCount(serverTrust);
+    NSMutableArray *trustChain = [NSMutableArray arrayWithCapacity:(NSUInteger)certificateCount];
+    for (CFIndex i = 0; i < certificateCount; i++) {
+        SecCertificateRef certificate = SecTrustGetCertificateAtIndex(serverTrust, i);
+
+        SecCertificateRef someCertificates[] = {certificate};
+        CFArrayRef certificates = CFArrayCreate(NULL, (const void **)someCertificates, 1, NULL);
+
+        SecTrustRef trust;
+        __Require_noErr_Quiet(SecTrustCreateWithCertificates(certificates, policy, &trust), _out);
+
+        SecTrustResultType result;
+        __Require_noErr_Quiet(SecTrustEvaluate(trust, &result), _out);
+
+        [trustChain addObject:(__bridge_transfer id)SecTrustCopyPublicKey(trust)];
+
+    _out:
+        if (trust) {
+            CFRelease(trust);
+        }
+
+        if (certificates) {
+            CFRelease(certificates);
+        }
+
+        continue;
+    }
+    CFRelease(policy);
+
+    return [NSArray arrayWithArray:trustChain];
+}
+
+#pragma mark -
+
+@interface AFSecurityPolicy()
+@property (readwrite, nonatomic, assign) AFSSLPinningMode SSLPinningMode;
+@property (readwrite, nonatomic, strong) NSArray *pinnedPublicKeys;
+@end
+
+@implementation AFSecurityPolicy
+
++ (NSArray *)defaultPinnedCertificates {
+    static NSArray *_defaultPinnedCertificates = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        NSBundle *bundle = [NSBundle bundleForClass:[self class]];
+        NSArray *paths = [bundle pathsForResourcesOfType:@"cer" inDirectory:@"."];
+
+        NSMutableArray *certificates = [NSMutableArray arrayWithCapacity:[paths count]];
+        for (NSString *path in paths) {
+            NSData *certificateData = [NSData dataWithContentsOfFile:path];
+            [certificates addObject:certificateData];
+        }
+
+        _defaultPinnedCertificates = [[NSArray alloc] initWithArray:certificates];
+    });
+
+    return _defaultPinnedCertificates;
+}
+
++ (instancetype)defaultPolicy {
+    AFSecurityPolicy *securityPolicy = [[self alloc] init];
+    securityPolicy.SSLPinningMode = AFSSLPinningModeNone;
+
+    return securityPolicy;
+}
+
++ (instancetype)policyWithPinningMode:(AFSSLPinningMode)pinningMode {
+    AFSecurityPolicy *securityPolicy = [[self alloc] init];
+    securityPolicy.SSLPinningMode = pinningMode;
+
+    [securityPolicy setPinnedCertificates:[self defaultPinnedCertificates]];
+
+    return securityPolicy;
+}
+
+- (id)init {
+    self = [super init];
+    if (!self) {
+        return nil;
+    }
+
+    self.validatesDomainName = YES;
+
+    return self;
+}
+
+- (void)setPinnedCertificates:(NSArray *)pinnedCertificates {
+    _pinnedCertificates = [[NSOrderedSet orderedSetWithArray:pinnedCertificates] array];
+
+    if (self.pinnedCertificates) {
+        NSMutableArray *mutablePinnedPublicKeys = [NSMutableArray arrayWithCapacity:[self.pinnedCertificates count]];
+        for (NSData *certificate in self.pinnedCertificates) {
+            id publicKey = AFPublicKeyForCertificate(certificate);
+            if (!publicKey) {
+                continue;
+            }
+            [mutablePinnedPublicKeys addObject:publicKey];
+        }
+        self.pinnedPublicKeys = [NSArray arrayWithArray:mutablePinnedPublicKeys];
+    } else {
+        self.pinnedPublicKeys = nil;
+    }
+}
+
+#pragma mark -
+
+- (BOOL)evaluateServerTrust:(SecTrustRef)serverTrust {
+    return [self evaluateServerTrust:serverTrust forDomain:nil];
+}
+
+- (BOOL)evaluateServerTrust:(SecTrustRef)serverTrust
+                  forDomain:(NSString *)domain
+{
+    if (domain && self.allowInvalidCertificates && self.validatesDomainName && (self.SSLPinningMode == AFSSLPinningModeNone || [self.pinnedCertificates count] == 0)) {
+        // https://developer.apple.com/library/mac/documentation/NetworkingInternet/Conceptual/NetworkingTopics/Articles/OverridingSSLChainValidationCorrectly.html
+        //  According to the docs, you should only trust your provided certs for evaluation.
+        //  Pinned certificates are added to the trust. Without pinned certificates,
+        //  there is nothing to evaluate against.
+        //
+        //  From Apple Docs:
+        //          "Do not implicitly trust self-signed certificates as anchors (kSecTrustOptionImplicitAnchors).
+        //           Instead, add your own (self-signed) CA certificate to the list of trusted anchors."
+        NSLog(@"In order to validate a domain name for self signed certificates, you MUST use pinning.");
+        return NO;
+    }
+
+    NSMutableArray *policies = [NSMutableArray array];
+    if (self.validatesDomainName) {
+        [policies addObject:(__bridge_transfer id)SecPolicyCreateSSL(true, (__bridge CFStringRef)domain)];
+    } else {
+        [policies addObject:(__bridge_transfer id)SecPolicyCreateBasicX509()];
+    }
+
+    SecTrustSetPolicies(serverTrust, (__bridge CFArrayRef)policies);
+
+    if (self.SSLPinningMode == AFSSLPinningModeNone) {
+        return self.allowInvalidCertificates || AFServerTrustIsValid(serverTrust);
+    } else if (!AFServerTrustIsValid(serverTrust) && !self.allowInvalidCertificates) {
+        return NO;
+    }
+
+    NSArray *serverCertificates = AFCertificateTrustChainForServerTrust(serverTrust);
+    switch (self.SSLPinningMode) {
+        case AFSSLPinningModeNone:
+        default:
+            return NO;
+        case AFSSLPinningModeCertificate: {
+            NSMutableArray *pinnedCertificates = [NSMutableArray array];
+            for (NSData *certificateData in self.pinnedCertificates) {
+                [pinnedCertificates addObject:(__bridge_transfer id)SecCertificateCreateWithData(NULL, (__bridge CFDataRef)certificateData)];
+            }
+            SecTrustSetAnchorCertificates(serverTrust, (__bridge CFArrayRef)pinnedCertificates);
+
+            if (!AFServerTrustIsValid(serverTrust)) {
+                return NO;
+            }
+
+            NSUInteger trustedCertificateCount = 0;
+            for (NSData *trustChainCertificate in serverCertificates) {
+                if ([self.pinnedCertificates containsObject:trustChainCertificate]) {
+                    trustedCertificateCount++;
+                }
+            }
+            return trustedCertificateCount > 0;
+        }
+        case AFSSLPinningModePublicKey: {
+            NSUInteger trustedPublicKeyCount = 0;
+            NSArray *publicKeys = AFPublicKeyTrustChainForServerTrust(serverTrust);
+
+            for (id trustChainPublicKey in publicKeys) {
+                for (id pinnedPublicKey in self.pinnedPublicKeys) {
+                    if (AFSecKeyIsEqualToKey((__bridge SecKeyRef)trustChainPublicKey, (__bridge SecKeyRef)pinnedPublicKey)) {
+                        trustedPublicKeyCount += 1;
+                    }
+                }
+            }
+            return trustedPublicKeyCount > 0;
+        }
+    }
+    
+    return NO;
+}
+
+#pragma mark - NSKeyValueObserving
+
++ (NSSet *)keyPathsForValuesAffectingPinnedPublicKeys {
+    return [NSSet setWithObject:@"pinnedCertificates"];
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+    return YES;
+}
+
+- (instancetype)initWithCoder:(NSCoder *)decoder {
+
+    self = [self init];
+    if (!self) {
+        return nil;
+    }
+
+    self.SSLPinningMode = [[decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(SSLPinningMode))] unsignedIntegerValue];
+    self.allowInvalidCertificates = [decoder decodeBoolForKey:NSStringFromSelector(@selector(allowInvalidCertificates))];
+    self.validatesDomainName = [decoder decodeBoolForKey:NSStringFromSelector(@selector(validatesDomainName))];
+    self.pinnedCertificates = [decoder decodeObjectOfClass:[NSArray class] forKey:NSStringFromSelector(@selector(pinnedCertificates))];
+
+    return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+    [coder encodeObject:[NSNumber numberWithUnsignedInteger:self.SSLPinningMode] forKey:NSStringFromSelector(@selector(SSLPinningMode))];
+    [coder encodeBool:self.allowInvalidCertificates forKey:NSStringFromSelector(@selector(allowInvalidCertificates))];
+    [coder encodeBool:self.validatesDomainName forKey:NSStringFromSelector(@selector(validatesDomainName))];
+    [coder encodeObject:self.pinnedCertificates forKey:NSStringFromSelector(@selector(pinnedCertificates))];
+}
+
+#pragma mark - NSCopying
+
+- (instancetype)copyWithZone:(NSZone *)zone {
+    AFSecurityPolicy *securityPolicy = [[[self class] allocWithZone:zone] init];
+    securityPolicy.SSLPinningMode = self.SSLPinningMode;
+    securityPolicy.allowInvalidCertificates = self.allowInvalidCertificates;
+    securityPolicy.validatesDomainName = self.validatesDomainName;
+    securityPolicy.pinnedCertificates = [self.pinnedCertificates copyWithZone:zone];
+
+    return securityPolicy;
+}
+
+@end

Example/Pods/AFNetworking/AFNetworking/AFURLConnectionOperation.h

+// AFURLConnectionOperation.h
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+
+#import <Availability.h>
+#import "AFURLRequestSerialization.h"
+#import "AFURLResponseSerialization.h"
+#import "AFSecurityPolicy.h"
+
+#ifndef NS_DESIGNATED_INITIALIZER
+#if __has_attribute(objc_designated_initializer)
+#define NS_DESIGNATED_INITIALIZER __attribute__((objc_designated_initializer))
+#else
+#define NS_DESIGNATED_INITIALIZER
+#endif
+#endif
+
+/**
+ `AFURLConnectionOperation` is a subclass of `NSOperation` that implements `NSURLConnection` delegate methods.
+
+ ## Subclassing Notes
+
+ This is the base class of all network request operations. You may wish to create your own subclass in order to implement additional `NSURLConnection` delegate methods (see "`NSURLConnection` Delegate Methods" below), or to provide additional properties and/or class constructors.
+
+ If you are creating a subclass that communicates over the HTTP or HTTPS protocols, you may want to consider subclassing `AFHTTPRequestOperation` instead, as it supports specifying acceptable content types or status codes.
+
+ ## NSURLConnection Delegate Methods
+
+ `AFURLConnectionOperation` implements the following `NSURLConnection` delegate methods:
+
+ - `connection:didReceiveResponse:`
+ - `connection:didReceiveData:`
+ - `connectionDidFinishLoading:`
+ - `connection:didFailWithError:`
+ - `connection:didSendBodyData:totalBytesWritten:totalBytesExpectedToWrite:`
+ - `connection:willCacheResponse:`
+ - `connectionShouldUseCredentialStorage:`
+ - `connection:needNewBodyStream:`
+ - `connection:willSendRequestForAuthenticationChallenge:`
+
+ If any of these methods are overridden in a subclass, they _must_ call the `super` implementation first.
+
+ ## Callbacks and Completion Blocks
+
+ The built-in `completionBlock` provided by `NSOperation` allows for custom behavior to be executed after the request finishes. It is a common pattern for class constructors in subclasses to take callback block parameters, and execute them conditionally in the body of its `completionBlock`. Make sure to handle cancelled operations appropriately when setting a `completionBlock` (i.e. returning early before parsing response data). See the implementation of any of the `AFHTTPRequestOperation` subclasses for an example of this.
+
+ Subclasses are strongly discouraged from overriding `setCompletionBlock:`, as `AFURLConnectionOperation`'s implementation includes a workaround to mitigate retain cycles, and what Apple rather ominously refers to as ["The Deallocation Problem"](http://developer.apple.com/library/ios/#technotes/tn2109/).
+
+ ## SSL Pinning
+
+ Relying on the CA trust model to validate SSL certificates exposes your app to security vulnerabilities, such as man-in-the-middle attacks. For applications that connect to known servers, SSL certificate pinning provides an increased level of security, by checking server certificate validity against those specified in the app bundle.
+
+ SSL with certificate pinning is strongly recommended for any application that transmits sensitive information to an external webservice.
+
+ Connections will be validated on all matching certificates with a `.cer` extension in the bundle root.
+
+ ## NSCoding & NSCopying Conformance
+
+ `AFURLConnectionOperation` conforms to the `NSCoding` and `NSCopying` protocols, allowing operations to be archived to disk, and copied in memory, respectively. However, because of the intrinsic limitations of capturing the exact state of an operation at a particular moment, there are some important caveats to keep in mind:
+
+ ### NSCoding Caveats
+
+ - Encoded operations do not include any block or stream properties. Be sure to set `completionBlock`, `outputStream`, and any callback blocks as necessary when using `-initWithCoder:` or `NSKeyedUnarchiver`.
+ - Operations are paused on `encodeWithCoder:`. If the operation was encoded while paused or still executing, its archived state will return `YES` for `isReady`. Otherwise, the state of an operation when encoding will remain unchanged.
+
+ ### NSCopying Caveats
+
+ - `-copy` and `-copyWithZone:` return a new operation with the `NSURLRequest` of the original. So rather than an exact copy of the operation at that particular instant, the copying mechanism returns a completely new instance, which can be useful for retrying operations.
+ - A copy of an operation will not include the `outputStream` of the original.
+ - Operation copies do not include `completionBlock`, as it often strongly captures a reference to `self`, which would otherwise have the unintuitive side-effect of pointing to the _original_ operation when copied.
+ */
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface AFURLConnectionOperation : NSOperation <NSURLConnectionDelegate, NSURLConnectionDataDelegate, NSSecureCoding, NSCopying>
+
+///-------------------------------
+/// @name Accessing Run Loop Modes
+///-------------------------------
+
+/**
+ The run loop modes in which the operation will run on the network thread. By default, this is a single-member set containing `NSRunLoopCommonModes`.
+ */
+@property (nonatomic, strong) NSSet *runLoopModes;
+
+///-----------------------------------------
+/// @name Getting URL Connection Information
+///-----------------------------------------
+
+/**
+ The request used by the operation's connection.
+ */
+@property (readonly, nonatomic, strong) NSURLRequest *request;
+
+/**
+ The last response received by the operation's connection.
+ */
+@property (readonly, nonatomic, strong, nullable) NSURLResponse *response;
+
+/**
+ The error, if any, that occurred in the lifecycle of the request.
+ */
+@property (readonly, nonatomic, strong, nullable) NSError *error;
+
+///----------------------------
+/// @name Getting Response Data
+///----------------------------
+
+/**
+ The data received during the request.
+ */
+@property (readonly, nonatomic, strong, nullable) NSData *responseData;
+
+/**
+ The string representation of the response data.
+ */
+@property (readonly, nonatomic, copy, nullable) NSString *responseString;
+
+/**
+ The string encoding of the response.
+
+ If the response does not specify a valid string encoding, `responseStringEncoding` will return `NSUTF8StringEncoding`.
+ */
+@property (readonly, nonatomic, assign) NSStringEncoding responseStringEncoding;
+
+///-------------------------------
+/// @name Managing URL Credentials
+///-------------------------------
+
+/**
+ Whether the URL connection should consult the credential storage for authenticating the connection. `YES` by default.
+
+ This is the value that is returned in the `NSURLConnectionDelegate` method `-connectionShouldUseCredentialStorage:`.
+ */
+@property (nonatomic, assign) BOOL shouldUseCredentialStorage;
+
+/**
+ The credential used for authentication challenges in `-connection:didReceiveAuthenticationChallenge:`.
+
+ This will be overridden by any shared credentials that exist for the username or password of the request URL, if present.
+ */
+@property (nonatomic, strong, nullable) NSURLCredential *credential;
+
+///-------------------------------
+/// @name Managing Security Policy
+///-------------------------------
+
+/**
+ The security policy used to evaluate server trust for secure connections.
+ */
+@property (nonatomic, strong) AFSecurityPolicy *securityPolicy;
+
+///------------------------
+/// @name Accessing Streams
+///------------------------
+
+/**
+ The input stream used to read data to be sent during the request.
+
+ This property acts as a proxy to the `HTTPBodyStream` property of `request`.
+ */
+@property (nonatomic, strong) NSInputStream *inputStream;
+
+/**
+ The output stream that is used to write data received until the request is finished.
+
+ By default, data is accumulated into a buffer that is stored into `responseData` upon completion of the request, with the intermediary `outputStream` property set to `nil`. When `outputStream` is set, the data will not be accumulated into an internal buffer, and as a result, the `responseData` property of the completed request will be `nil`. The output stream will be scheduled in the network thread runloop upon being set.
+ */
+@property (nonatomic, strong, nullable) NSOutputStream *outputStream;
+
+///---------------------------------
+/// @name Managing Callback Queues
+///---------------------------------
+
+/**
+ The dispatch queue for `completionBlock`. If `NULL` (default), the main queue is used.
+ */
+#if OS_OBJECT_USE_OBJC
+@property (nonatomic, strong, nullable) dispatch_queue_t completionQueue;
+#else
+@property (nonatomic, assign, nullable) dispatch_queue_t completionQueue;
+#endif
+
+/**
+ The dispatch group for `completionBlock`. If `NULL` (default), a private dispatch group is used.
+ */
+#if OS_OBJECT_USE_OBJC
+@property (nonatomic, strong, nullable) dispatch_group_t completionGroup;
+#else
+@property (nonatomic, assign, nullable) dispatch_group_t completionGroup;
+#endif
+
+///---------------------------------------------
+/// @name Managing Request Operation Information
+///---------------------------------------------
+
+/**
+ The user info dictionary for the receiver.
+ */
+@property (nonatomic, strong) NSDictionary *userInfo;
+// FIXME: It doesn't seem that this userInfo is used anywhere in the implementation.
+
+///------------------------------------------------------
+/// @name Initializing an AFURLConnectionOperation Object
+///------------------------------------------------------
+
+/**
+ Initializes and returns a newly allocated operation object with a url connection configured with the specified url request.
+
+ This is the designated initializer.
+
+ @param urlRequest The request object to be used by the operation connection.
+ */
+- (instancetype)initWithRequest:(NSURLRequest *)urlRequest NS_DESIGNATED_INITIALIZER;
+
+///----------------------------------
+/// @name Pausing / Resuming Requests
+///----------------------------------
+
+/**
+ Pauses the execution of the request operation.
+
+ A paused operation returns `NO` for `-isReady`, `-isExecuting`, and `-isFinished`. As such, it will remain in an `NSOperationQueue` until it is either cancelled or resumed. Pausing a finished, cancelled, or paused operation has no effect.
+ */
+- (void)pause;
+
+/**
+ Whether the request operation is currently paused.
+
+ @return `YES` if the operation is currently paused, otherwise `NO`.
+ */
+- (BOOL)isPaused;
+
+/**
+ Resumes the execution of the paused request operation.
+
+ Pause/Resume behavior varies depending on the underlying implementation for the operation class. In its base implementation, resuming a paused requests restarts the original request. However, since HTTP defines a specification for how to request a specific content range, `AFHTTPRequestOperation` will resume downloading the request from where it left off, instead of restarting the original request.
+ */
+- (void)resume;
+
+///----------------------------------------------
+/// @name Configuring Backgrounding Task Behavior
+///----------------------------------------------
+
+/**
+ Specifies that the operation should continue execution after the app has entered the background, and the expiration handler for that background task.
+
+ @param handler A handler to be called shortly before the application’s remaining background time reaches 0. The handler is wrapped in a block that cancels the operation, and cleans up and marks the end of execution, unlike the `handler` parameter in `UIApplication -beginBackgroundTaskWithExpirationHandler:`, which expects this to be done in the handler itself. The handler is called synchronously on the main thread, thus blocking the application’s suspension momentarily while the application is notified.
+  */
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+- (void)setShouldExecuteAsBackgroundTaskWithExpirationHandler:(nullable void (^)(void))handler NS_EXTENSION_UNAVAILABLE_IOS("Not available in app extensions.");
+#endif
+
+///---------------------------------
+/// @name Setting Progress Callbacks
+///---------------------------------
+
+/**
+ Sets a callback to be called when an undetermined number of bytes have been uploaded to the server.
+
+ @param block A block object to be called when an undetermined number of bytes have been uploaded to the server. This block has no return value and takes three arguments: the number of bytes written since the last time the upload progress block was called, the total bytes written, and the total bytes expected to be written during the request, as initially determined by the length of the HTTP body. This block may be called multiple times, and will execute on the main thread.
+ */
+- (void)setUploadProgressBlock:(nullable void (^)(NSUInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite))block;
+
+/**
+ Sets a callback to be called when an undetermined number of bytes have been downloaded from the server.
+
+ @param block A block object to be called when an undetermined number of bytes have been downloaded from the server. This block has no return value and takes three arguments: the number of bytes read since the last time the download progress block was called, the total bytes read, and the total bytes expected to be read during the request, as initially determined by the expected content size of the `NSHTTPURLResponse` object. This block may be called multiple times, and will execute on the main thread.
+ */
+- (void)setDownloadProgressBlock:(nullable void (^)(NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead))block;
+
+///-------------------------------------------------
+/// @name Setting NSURLConnection Delegate Callbacks
+///-------------------------------------------------
+
+/**
+ Sets a block to be executed when the connection will authenticate a challenge in order to download its request, as handled by the `NSURLConnectionDelegate` method `connection:willSendRequestForAuthenticationChallenge:`.
+
+ @param block A block object to be executed when the connection will authenticate a challenge in order to download its request. The block has no return type and takes two arguments: the URL connection object, and the challenge that must be authenticated. This block must invoke one of the challenge-responder methods (NSURLAuthenticationChallengeSender protocol).
+
+ If `allowsInvalidSSLCertificate` is set to YES, `connection:willSendRequestForAuthenticationChallenge:` will attempt to have the challenge sender use credentials with invalid SSL certificates.
+ */
+- (void)setWillSendRequestForAuthenticationChallengeBlock:(nullable void (^)(NSURLConnection *connection, NSURLAuthenticationChallenge *challenge))block;
+
+/**
+ Sets a block to be executed when the server redirects the request from one URL to another URL, or when the request URL changed by the `NSURLProtocol` subclass handling the request in order to standardize its format, as handled by the `NSURLConnectionDataDelegate` method `connection:willSendRequest:redirectResponse:`.
+
+ @param block A block object to be executed when the request URL was changed. The block returns an `NSURLRequest` object, the URL request to redirect, and takes three arguments: the URL connection object, the the proposed redirected request, and the URL response that caused the redirect.
+ */
+- (void)setRedirectResponseBlock:(nullable NSURLRequest * (^)(NSURLConnection *connection, NSURLRequest *request, NSURLResponse *redirectResponse))block;
+
+
+/**
+ Sets a block to be executed to modify the response a connection will cache, if any, as handled by the `NSURLConnectionDelegate` method `connection:willCacheResponse:`.
+
+ @param block A block object to be executed to determine what response a connection will cache, if any. The block returns an `NSCachedURLResponse` object, the cached response to store in memory or `nil` to prevent the response from being cached, and takes two arguments: the URL connection object, and the cached response provided for the request.
+ */
+- (void)setCacheResponseBlock:(nullable NSCachedURLResponse * (^)(NSURLConnection *connection, NSCachedURLResponse *cachedResponse))block;
+
+///
+
+/**
+
+ */
++ (NSArray *)batchOfRequestOperations:(nullable NSArray *)operations
+                        progressBlock:(nullable void (^)(NSUInteger numberOfFinishedOperations, NSUInteger totalNumberOfOperations))progressBlock
+                      completionBlock:(nullable void (^)(NSArray *operations))completionBlock;
+
+@end
+
+///--------------------
+/// @name Notifications
+///--------------------
+
+/**
+ Posted when an operation begins executing.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingOperationDidStartNotification;
+
+/**
+ Posted when an operation finishes.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingOperationDidFinishNotification;
+
+NS_ASSUME_NONNULL_END

Example/Pods/AFNetworking/AFNetworking/AFURLConnectionOperation.m

+// AFURLConnectionOperation.m
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "AFURLConnectionOperation.h"
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+#import <UIKit/UIKit.h>
+#endif
+
+#if !__has_feature(objc_arc)
+#error AFNetworking must be built with ARC.
+// You can turn on ARC for only AFNetworking files by adding -fobjc-arc to the build phase for each of its files.
+#endif
+
+typedef NS_ENUM(NSInteger, AFOperationState) {
+    AFOperationPausedState      = -1,
+    AFOperationReadyState       = 1,
+    AFOperationExecutingState   = 2,
+    AFOperationFinishedState    = 3,
+};
+
+static dispatch_group_t url_request_operation_completion_group() {
+    static dispatch_group_t af_url_request_operation_completion_group;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        af_url_request_operation_completion_group = dispatch_group_create();
+    });
+
+    return af_url_request_operation_completion_group;
+}
+
+static dispatch_queue_t url_request_operation_completion_queue() {
+    static dispatch_queue_t af_url_request_operation_completion_queue;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        af_url_request_operation_completion_queue = dispatch_queue_create("com.alamofire.networking.operation.queue", DISPATCH_QUEUE_CONCURRENT );
+    });
+
+    return af_url_request_operation_completion_queue;
+}
+
+static NSString * const kAFNetworkingLockName = @"com.alamofire.networking.operation.lock";
+
+NSString * const AFNetworkingOperationDidStartNotification = @"com.alamofire.networking.operation.start";
+NSString * const AFNetworkingOperationDidFinishNotification = @"com.alamofire.networking.operation.finish";
+
+typedef void (^AFURLConnectionOperationProgressBlock)(NSUInteger bytes, long long totalBytes, long long totalBytesExpected);
+typedef void (^AFURLConnectionOperationAuthenticationChallengeBlock)(NSURLConnection *connection, NSURLAuthenticationChallenge *challenge);
+typedef NSCachedURLResponse * (^AFURLConnectionOperationCacheResponseBlock)(NSURLConnection *connection, NSCachedURLResponse *cachedResponse);
+typedef NSURLRequest * (^AFURLConnectionOperationRedirectResponseBlock)(NSURLConnection *connection, NSURLRequest *request, NSURLResponse *redirectResponse);
+typedef void (^AFURLConnectionOperationBackgroundTaskCleanupBlock)();
+
+static inline NSString * AFKeyPathFromOperationState(AFOperationState state) {
+    switch (state) {
+        case AFOperationReadyState:
+            return @"isReady";
+        case AFOperationExecutingState:
+            return @"isExecuting";
+        case AFOperationFinishedState:
+            return @"isFinished";
+        case AFOperationPausedState:
+            return @"isPaused";
+        default: {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunreachable-code"
+            return @"state";
+#pragma clang diagnostic pop
+        }
+    }
+}
+
+static inline BOOL AFStateTransitionIsValid(AFOperationState fromState, AFOperationState toState, BOOL isCancelled) {
+    switch (fromState) {
+        case AFOperationReadyState:
+            switch (toState) {
+                case AFOperationPausedState:
+                case AFOperationExecutingState:
+                    return YES;
+                case AFOperationFinishedState:
+                    return isCancelled;
+                default:
+                    return NO;
+            }
+        case AFOperationExecutingState:
+            switch (toState) {
+                case AFOperationPausedState:
+                case AFOperationFinishedState:
+                    return YES;
+                default:
+                    return NO;
+            }
+        case AFOperationFinishedState:
+            return NO;
+        case AFOperationPausedState:
+            return toState == AFOperationReadyState;
+        default: {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunreachable-code"
+            switch (toState) {
+                case AFOperationPausedState:
+                case AFOperationReadyState:
+                case AFOperationExecutingState:
+                case AFOperationFinishedState:
+                    return YES;
+                default:
+                    return NO;
+            }
+        }
+#pragma clang diagnostic pop
+    }
+}
+
+@interface AFURLConnectionOperation ()
+@property (readwrite, nonatomic, assign) AFOperationState state;
+@property (readwrite, nonatomic, strong) NSRecursiveLock *lock;
+@property (readwrite, nonatomic, strong) NSURLConnection *connection;
+@property (readwrite, nonatomic, strong) NSURLRequest *request;
+@property (readwrite, nonatomic, strong) NSURLResponse *response;
+@property (readwrite, nonatomic, strong) NSError *error;
+@property (readwrite, nonatomic, strong) NSData *responseData;
+@property (readwrite, nonatomic, copy) NSString *responseString;
+@property (readwrite, nonatomic, assign) NSStringEncoding responseStringEncoding;
+@property (readwrite, nonatomic, assign) long long totalBytesRead;
+@property (readwrite, nonatomic, copy) AFURLConnectionOperationBackgroundTaskCleanupBlock backgroundTaskCleanup;
+@property (readwrite, nonatomic, copy) AFURLConnectionOperationProgressBlock uploadProgress;
+@property (readwrite, nonatomic, copy) AFURLConnectionOperationProgressBlock downloadProgress;
+@property (readwrite, nonatomic, copy) AFURLConnectionOperationAuthenticationChallengeBlock authenticationChallenge;
+@property (readwrite, nonatomic, copy) AFURLConnectionOperationCacheResponseBlock cacheResponse;
+@property (readwrite, nonatomic, copy) AFURLConnectionOperationRedirectResponseBlock redirectResponse;
+
+- (void)operationDidStart;
+- (void)finish;
+- (void)cancelConnection;
+@end
+
+@implementation AFURLConnectionOperation
+@synthesize outputStream = _outputStream;
+
++ (void)networkRequestThreadEntryPoint:(id)__unused object {
+    @autoreleasepool {
+        [[NSThread currentThread] setName:@"AFNetworking"];
+
+        NSRunLoop *runLoop = [NSRunLoop currentRunLoop];
+        [runLoop addPort:[NSMachPort port] forMode:NSDefaultRunLoopMode];
+        [runLoop run];
+    }
+}
+
++ (NSThread *)networkRequestThread {
+    static NSThread *_networkRequestThread = nil;
+    static dispatch_once_t oncePredicate;
+    dispatch_once(&oncePredicate, ^{
+        _networkRequestThread = [[NSThread alloc] initWithTarget:self selector:@selector(networkRequestThreadEntryPoint:) object:nil];
+        [_networkRequestThread start];
+    });
+
+    return _networkRequestThread;
+}
+
+- (instancetype)initWithRequest:(NSURLRequest *)urlRequest {
+    NSParameterAssert(urlRequest);
+
+    self = [super init];
+    if (!self) {
+		return nil;
+    }
+
+    _state = AFOperationReadyState;
+
+    self.lock = [[NSRecursiveLock alloc] init];
+    self.lock.name = kAFNetworkingLockName;
+
+    self.runLoopModes = [NSSet setWithObject:NSRunLoopCommonModes];
+
+    self.request = urlRequest;
+
+    self.shouldUseCredentialStorage = YES;
+
+    self.securityPolicy = [AFSecurityPolicy defaultPolicy];
+
+    return self;
+}
+
+- (instancetype)init NS_UNAVAILABLE
+{
+    return nil;
+}
+
+- (void)dealloc {
+    if (_outputStream) {
+        [_outputStream close];
+        _outputStream = nil;
+    }
+    
+    if (_backgroundTaskCleanup) {
+        _backgroundTaskCleanup();
+    }
+}
+
+#pragma mark -
+
+- (void)setResponseData:(NSData *)responseData {
+    [self.lock lock];
+    if (!responseData) {
+        _responseData = nil;
+    } else {
+        _responseData = [NSData dataWithBytes:responseData.bytes length:responseData.length];
+    }
+    [self.lock unlock];
+}
+
+- (NSString *)responseString {
+    [self.lock lock];
+    if (!_responseString && self.response && self.responseData) {
+        self.responseString = [[NSString alloc] initWithData:self.responseData encoding:self.responseStringEncoding];
+    }
+    [self.lock unlock];
+
+    return _responseString;
+}
+
+- (NSStringEncoding)responseStringEncoding {
+    [self.lock lock];
+    if (!_responseStringEncoding && self.response) {
+        NSStringEncoding stringEncoding = NSUTF8StringEncoding;
+        if (self.response.textEncodingName) {
+            CFStringEncoding IANAEncoding = CFStringConvertIANACharSetNameToEncoding((__bridge CFStringRef)self.response.textEncodingName);
+            if (IANAEncoding != kCFStringEncodingInvalidId) {
+                stringEncoding = CFStringConvertEncodingToNSStringEncoding(IANAEncoding);
+            }
+        }
+
+        self.responseStringEncoding = stringEncoding;
+    }
+    [self.lock unlock];
+
+    return _responseStringEncoding;
+}
+
+- (NSInputStream *)inputStream {
+    return self.request.HTTPBodyStream;
+}
+
+- (void)setInputStream:(NSInputStream *)inputStream {
+    NSMutableURLRequest *mutableRequest = [self.request mutableCopy];
+    mutableRequest.HTTPBodyStream = inputStream;
+    self.request = mutableRequest;
+}
+
+- (NSOutputStream *)outputStream {
+    if (!_outputStream) {
+        self.outputStream = [NSOutputStream outputStreamToMemory];
+    }
+
+    return _outputStream;
+}
+
+- (void)setOutputStream:(NSOutputStream *)outputStream {
+    [self.lock lock];
+    if (outputStream != _outputStream) {
+        if (_outputStream) {
+            [_outputStream close];
+        }
+
+        _outputStream = outputStream;
+    }
+    [self.lock unlock];
+}
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+- (void)setShouldExecuteAsBackgroundTaskWithExpirationHandler:(void (^)(void))handler {
+    [self.lock lock];
+    if (!self.backgroundTaskCleanup) {
+        UIApplication *application = [UIApplication sharedApplication];
+        UIBackgroundTaskIdentifier __block backgroundTaskIdentifier = UIBackgroundTaskInvalid;
+        __weak __typeof(self)weakSelf = self;
+        
+        self.backgroundTaskCleanup = ^(){
+            if (backgroundTaskIdentifier != UIBackgroundTaskInvalid) {
+                [[UIApplication sharedApplication] endBackgroundTask:backgroundTaskIdentifier];
+                backgroundTaskIdentifier = UIBackgroundTaskInvalid;
+            }
+        };
+        
+        backgroundTaskIdentifier = [application beginBackgroundTaskWithExpirationHandler:^{
+            __strong __typeof(weakSelf)strongSelf = weakSelf;
+
+            if (handler) {
+                handler();
+            }
+
+            if (strongSelf) {
+                [strongSelf cancel];
+                strongSelf.backgroundTaskCleanup();
+            }
+        }];
+    }
+    [self.lock unlock];
+}
+#endif
+
+#pragma mark -
+
+- (void)setState:(AFOperationState)state {
+    if (!AFStateTransitionIsValid(self.state, state, [self isCancelled])) {
+        return;
+    }
+
+    [self.lock lock];
+    NSString *oldStateKey = AFKeyPathFromOperationState(self.state);
+    NSString *newStateKey = AFKeyPathFromOperationState(state);
+
+    [self willChangeValueForKey:newStateKey];
+    [self willChangeValueForKey:oldStateKey];
+    _state = state;
+    [self didChangeValueForKey:oldStateKey];
+    [self didChangeValueForKey:newStateKey];
+    [self.lock unlock];
+}
+
+- (void)pause {
+    if ([self isPaused] || [self isFinished] || [self isCancelled]) {
+        return;
+    }
+
+    [self.lock lock];
+    if ([self isExecuting]) {
+        [self performSelector:@selector(operationDidPause) onThread:[[self class] networkRequestThread] withObject:nil waitUntilDone:NO modes:[self.runLoopModes allObjects]];
+
+        dispatch_async(dispatch_get_main_queue(), ^{
+            NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+            [notificationCenter postNotificationName:AFNetworkingOperationDidFinishNotification object:self];
+        });
+    }
+
+    self.state = AFOperationPausedState;
+    [self.lock unlock];
+}
+
+- (void)operationDidPause {
+    [self.lock lock];
+    [self.connection cancel];
+    [self.lock unlock];
+}
+
+- (BOOL)isPaused {
+    return self.state == AFOperationPausedState;
+}
+
+- (void)resume {
+    if (![self isPaused]) {
+        return;
+    }
+
+    [self.lock lock];
+    self.state = AFOperationReadyState;
+
+    [self start];
+    [self.lock unlock];
+}
+
+#pragma mark -
+
+- (void)setUploadProgressBlock:(void (^)(NSUInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite))block {
+    self.uploadProgress = block;
+}
+
+- (void)setDownloadProgressBlock:(void (^)(NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead))block {
+    self.downloadProgress = block;
+}
+
+- (void)setWillSendRequestForAuthenticationChallengeBlock:(void (^)(NSURLConnection *connection, NSURLAuthenticationChallenge *challenge))block {
+    self.authenticationChallenge = block;
+}
+
+- (void)setCacheResponseBlock:(NSCachedURLResponse * (^)(NSURLConnection *connection, NSCachedURLResponse *cachedResponse))block {
+    self.cacheResponse = block;
+}
+
+- (void)setRedirectResponseBlock:(NSURLRequest * (^)(NSURLConnection *connection, NSURLRequest *request, NSURLResponse *redirectResponse))block {
+    self.redirectResponse = block;
+}
+
+#pragma mark - NSOperation
+
+- (void)setCompletionBlock:(void (^)(void))block {
+    [self.lock lock];
+    if (!block) {
+        [super setCompletionBlock:nil];
+    } else {
+        __weak __typeof(self)weakSelf = self;
+        [super setCompletionBlock:^ {
+            __strong __typeof(weakSelf)strongSelf = weakSelf;
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+            dispatch_group_t group = strongSelf.completionGroup ?: url_request_operation_completion_group();
+            dispatch_queue_t queue = strongSelf.completionQueue ?: dispatch_get_main_queue();
+#pragma clang diagnostic pop
+
+            dispatch_group_async(group, queue, ^{
+                block();
+            });
+
+            dispatch_group_notify(group, url_request_operation_completion_queue(), ^{
+                [strongSelf setCompletionBlock:nil];
+            });
+        }];
+    }
+    [self.lock unlock];
+}
+
+- (BOOL)isReady {
+    return self.state == AFOperationReadyState && [super isReady];
+}
+
+- (BOOL)isExecuting {
+    return self.state == AFOperationExecutingState;
+}
+
+- (BOOL)isFinished {
+    return self.state == AFOperationFinishedState;
+}
+
+- (BOOL)isConcurrent {
+    return YES;
+}
+
+- (void)start {
+    [self.lock lock];
+    if ([self isCancelled]) {
+        [self performSelector:@selector(cancelConnection) onThread:[[self class] networkRequestThread] withObject:nil waitUntilDone:NO modes:[self.runLoopModes allObjects]];
+    } else if ([self isReady]) {
+        self.state = AFOperationExecutingState;
+
+        [self performSelector:@selector(operationDidStart) onThread:[[self class] networkRequestThread] withObject:nil waitUntilDone:NO modes:[self.runLoopModes allObjects]];
+    }
+    [self.lock unlock];
+}
+
+- (void)operationDidStart {
+    [self.lock lock];
+    if (![self isCancelled]) {
+        self.connection = [[NSURLConnection alloc] initWithRequest:self.request delegate:self startImmediately:NO];
+
+        NSRunLoop *runLoop = [NSRunLoop currentRunLoop];
+        for (NSString *runLoopMode in self.runLoopModes) {
+            [self.connection scheduleInRunLoop:runLoop forMode:runLoopMode];
+            [self.outputStream scheduleInRunLoop:runLoop forMode:runLoopMode];
+        }
+
+        [self.outputStream open];
+        [self.connection start];
+    }
+    [self.lock unlock];
+
+    dispatch_async(dispatch_get_main_queue(), ^{
+        [[NSNotificationCenter defaultCenter] postNotificationName:AFNetworkingOperationDidStartNotification object:self];
+    });
+}
+
+- (void)finish {
+    [self.lock lock];
+    self.state = AFOperationFinishedState;
+    [self.lock unlock];
+
+    dispatch_async(dispatch_get_main_queue(), ^{
+        [[NSNotificationCenter defaultCenter] postNotificationName:AFNetworkingOperationDidFinishNotification object:self];
+    });
+}
+
+- (void)cancel {
+    [self.lock lock];
+    if (![self isFinished] && ![self isCancelled]) {
+        [super cancel];
+
+        if ([self isExecuting]) {
+            [self performSelector:@selector(cancelConnection) onThread:[[self class] networkRequestThread] withObject:nil waitUntilDone:NO modes:[self.runLoopModes allObjects]];
+        }
+    }
+    [self.lock unlock];
+}
+
+- (void)cancelConnection {
+    NSDictionary *userInfo = nil;
+    if ([self.request URL]) {
+        userInfo = @{NSURLErrorFailingURLErrorKey : [self.request URL]};
+    }
+    NSError *error = [NSError errorWithDomain:NSURLErrorDomain code:NSURLErrorCancelled userInfo:userInfo];
+
+    if (![self isFinished]) {
+        if (self.connection) {
+            [self.connection cancel];
+            [self performSelector:@selector(connection:didFailWithError:) withObject:self.connection withObject:error];
+        } else {
+            // Accommodate race condition where `self.connection` has not yet been set before cancellation
+            self.error = error;
+            [self finish];
+        }
+    }
+}
+
+#pragma mark -
+
++ (NSArray *)batchOfRequestOperations:(NSArray *)operations
+                        progressBlock:(void (^)(NSUInteger numberOfFinishedOperations, NSUInteger totalNumberOfOperations))progressBlock
+                      completionBlock:(void (^)(NSArray *operations))completionBlock
+{
+    if (!operations || [operations count] == 0) {
+        return @[[NSBlockOperation blockOperationWithBlock:^{
+            dispatch_async(dispatch_get_main_queue(), ^{
+                if (completionBlock) {
+                    completionBlock(@[]);
+                }
+            });
+        }]];
+    }
+
+    __block dispatch_group_t group = dispatch_group_create();
+    NSBlockOperation *batchedOperation = [NSBlockOperation blockOperationWithBlock:^{
+        dispatch_group_notify(group, dispatch_get_main_queue(), ^{
+            if (completionBlock) {
+                completionBlock(operations);
+            }
+        });
+    }];
+
+    for (AFURLConnectionOperation *operation in operations) {
+        operation.completionGroup = group;
+        void (^originalCompletionBlock)(void) = [operation.completionBlock copy];
+        __weak __typeof(operation)weakOperation = operation;
+        operation.completionBlock = ^{
+            __strong __typeof(weakOperation)strongOperation = weakOperation;
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+            dispatch_queue_t queue = strongOperation.completionQueue ?: dispatch_get_main_queue();
+#pragma clang diagnostic pop
+            dispatch_group_async(group, queue, ^{
+                if (originalCompletionBlock) {
+                    originalCompletionBlock();
+                }
+
+                NSUInteger numberOfFinishedOperations = [[operations indexesOfObjectsPassingTest:^BOOL(id op, NSUInteger __unused idx,  BOOL __unused *stop) {
+                    return [op isFinished];
+                }] count];
+
+                if (progressBlock) {
+                    progressBlock(numberOfFinishedOperations, [operations count]);
+                }
+
+                dispatch_group_leave(group);
+            });
+        };
+
+        dispatch_group_enter(group);
+        [batchedOperation addDependency:operation];
+    }
+
+    return [operations arrayByAddingObject:batchedOperation];
+}
+
+#pragma mark - NSObject
+
+- (NSString *)description {
+    [self.lock lock];
+    NSString *description = [NSString stringWithFormat:@"<%@: %p, state: %@, cancelled: %@ request: %@, response: %@>", NSStringFromClass([self class]), self, AFKeyPathFromOperationState(self.state), ([self isCancelled] ? @"YES" : @"NO"), self.request, self.response];
+    [self.lock unlock];
+    return description;
+}
+
+#pragma mark - NSURLConnectionDelegate
+
+- (void)connection:(NSURLConnection *)connection
+willSendRequestForAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
+{
+    if (self.authenticationChallenge) {
+        self.authenticationChallenge(connection, challenge);
+        return;
+    }
+
+    if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust]) {
+        if ([self.securityPolicy evaluateServerTrust:challenge.protectionSpace.serverTrust forDomain:challenge.protectionSpace.host]) {
+            NSURLCredential *credential = [NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust];
+            [[challenge sender] useCredential:credential forAuthenticationChallenge:challenge];
+        } else {
+            [[challenge sender] cancelAuthenticationChallenge:challenge];
+        }
+    } else {
+        if ([challenge previousFailureCount] == 0) {
+            if (self.credential) {
+                [[challenge sender] useCredential:self.credential forAuthenticationChallenge:challenge];
+            } else {
+                [[challenge sender] continueWithoutCredentialForAuthenticationChallenge:challenge];
+            }
+        } else {
+            [[challenge sender] continueWithoutCredentialForAuthenticationChallenge:challenge];
+        }
+    }
+}
+
+- (BOOL)connectionShouldUseCredentialStorage:(NSURLConnection __unused *)connection {
+    return self.shouldUseCredentialStorage;
+}
+
+- (NSURLRequest *)connection:(NSURLConnection *)connection
+             willSendRequest:(NSURLRequest *)request
+            redirectResponse:(NSURLResponse *)redirectResponse
+{
+    if (self.redirectResponse) {
+        return self.redirectResponse(connection, request, redirectResponse);
+    } else {
+        return request;
+    }
+}
+
+- (void)connection:(NSURLConnection __unused *)connection
+   didSendBodyData:(NSInteger)bytesWritten
+ totalBytesWritten:(NSInteger)totalBytesWritten
+totalBytesExpectedToWrite:(NSInteger)totalBytesExpectedToWrite
+{
+    dispatch_async(dispatch_get_main_queue(), ^{
+        if (self.uploadProgress) {
+            self.uploadProgress((NSUInteger)bytesWritten, totalBytesWritten, totalBytesExpectedToWrite);
+        }
+    });
+}
+
+- (void)connection:(NSURLConnection __unused *)connection
+didReceiveResponse:(NSURLResponse *)response
+{
+    self.response = response;
+}
+
+- (void)connection:(NSURLConnection __unused *)connection
+    didReceiveData:(NSData *)data
+{
+    NSUInteger length = [data length];
+    while (YES) {
+        NSInteger totalNumberOfBytesWritten = 0;
+        if ([self.outputStream hasSpaceAvailable]) {
+            const uint8_t *dataBuffer = (uint8_t *)[data bytes];
+
+            NSInteger numberOfBytesWritten = 0;
+            while (totalNumberOfBytesWritten < (NSInteger)length) {
+                numberOfBytesWritten = [self.outputStream write:&dataBuffer[(NSUInteger)totalNumberOfBytesWritten] maxLength:(length - (NSUInteger)totalNumberOfBytesWritten)];
+                if (numberOfBytesWritten == -1) {
+                    break;
+                }
+
+                totalNumberOfBytesWritten += numberOfBytesWritten;
+            }
+
+            break;
+        } else {
+            [self.connection cancel];
+            if (self.outputStream.streamError) {
+                [self performSelector:@selector(connection:didFailWithError:) withObject:self.connection withObject:self.outputStream.streamError];
+            }
+            return;
+        }
+    }
+
+    dispatch_async(dispatch_get_main_queue(), ^{
+        self.totalBytesRead += (long long)length;
+
+        if (self.downloadProgress) {
+            self.downloadProgress(length, self.totalBytesRead, self.response.expectedContentLength);
+        }
+    });
+}
+
+- (void)connectionDidFinishLoading:(NSURLConnection __unused *)connection {
+    self.responseData = [self.outputStream propertyForKey:NSStreamDataWrittenToMemoryStreamKey];
+
+    [self.outputStream close];
+    if (self.responseData) {
+       self.outputStream = nil;
+    }
+
+    self.connection = nil;
+
+    [self finish];
+}
+
+- (void)connection:(NSURLConnection __unused *)connection
+  didFailWithError:(NSError *)error
+{
+    self.error = error;
+
+    [self.outputStream close];
+    if (self.responseData) {
+        self.outputStream = nil;
+    }
+
+    self.connection = nil;
+
+    [self finish];
+}
+
+- (NSCachedURLResponse *)connection:(NSURLConnection *)connection
+                  willCacheResponse:(NSCachedURLResponse *)cachedResponse
+{
+    if (self.cacheResponse) {
+        return self.cacheResponse(connection, cachedResponse);
+    } else {
+        if ([self isCancelled]) {
+            return nil;
+        }
+
+        return cachedResponse;
+    }
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+    return YES;
+}
+
+- (id)initWithCoder:(NSCoder *)decoder {
+    NSURLRequest *request = [decoder decodeObjectOfClass:[NSURLRequest class] forKey:NSStringFromSelector(@selector(request))];
+
+    self = [self initWithRequest:request];
+    if (!self) {
+        return nil;
+    }
+
+    self.state = (AFOperationState)[[decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(state))] integerValue];
+    self.response = [decoder decodeObjectOfClass:[NSHTTPURLResponse class] forKey:NSStringFromSelector(@selector(response))];
+    self.error = [decoder decodeObjectOfClass:[NSError class] forKey:NSStringFromSelector(@selector(error))];
+    self.responseData = [decoder decodeObjectOfClass:[NSData class] forKey:NSStringFromSelector(@selector(responseData))];
+    self.totalBytesRead = [[decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(totalBytesRead))] longLongValue];
+
+    return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+    [self pause];
+
+    [coder encodeObject:self.request forKey:NSStringFromSelector(@selector(request))];
+
+    switch (self.state) {
+        case AFOperationExecutingState:
+        case AFOperationPausedState:
+            [coder encodeInteger:AFOperationReadyState forKey:NSStringFromSelector(@selector(state))];
+            break;
+        default:
+            [coder encodeInteger:self.state forKey:NSStringFromSelector(@selector(state))];
+            break;
+    }
+
+    [coder encodeObject:self.response forKey:NSStringFromSelector(@selector(response))];
+    [coder encodeObject:self.error forKey:NSStringFromSelector(@selector(error))];
+    [coder encodeObject:self.responseData forKey:NSStringFromSelector(@selector(responseData))];
+    [coder encodeInt64:self.totalBytesRead forKey:NSStringFromSelector(@selector(totalBytesRead))];
+}
+
+#pragma mark - NSCopying
+
+- (id)copyWithZone:(NSZone *)zone {
+    AFURLConnectionOperation *operation = [(AFURLConnectionOperation *)[[self class] allocWithZone:zone] initWithRequest:self.request];
+
+    operation.uploadProgress = self.uploadProgress;
+    operation.downloadProgress = self.downloadProgress;
+    operation.authenticationChallenge = self.authenticationChallenge;
+    operation.cacheResponse = self.cacheResponse;
+    operation.redirectResponse = self.redirectResponse;
+    operation.completionQueue = self.completionQueue;
+    operation.completionGroup = self.completionGroup;
+
+    return operation;
+}
+
+@end

Example/Pods/AFNetworking/AFNetworking/AFURLRequestSerialization.h

+// AFURLRequestSerialization.h
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+#if TARGET_OS_IOS
+#import <UIKit/UIKit.h>
+#elif TARGET_OS_WATCH
+#import <WatchKit/WatchKit.h>
+#endif
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ The `AFURLRequestSerialization` protocol is adopted by an object that encodes parameters for a specified HTTP requests. Request serializers may encode parameters as query strings, HTTP bodies, setting the appropriate HTTP header fields as necessary.
+
+ For example, a JSON request serializer may set the HTTP body of the request to a JSON representation, and set the `Content-Type` HTTP header field value to `application/json`.
+ */
+@protocol AFURLRequestSerialization <NSObject, NSSecureCoding, NSCopying>
+
+/**
+ Returns a request with the specified parameters encoded into a copy of the original request.
+
+ @param request The original request.
+ @param parameters The parameters to be encoded.
+ @param error The error that occurred while attempting to encode the request parameters.
+
+ @return A serialized request.
+ */
+- (nullable NSURLRequest *)requestBySerializingRequest:(NSURLRequest *)request
+                               withParameters:(nullable id)parameters
+                                        error:(NSError * __nullable __autoreleasing *)error
+#ifdef NS_SWIFT_NOTHROW
+NS_SWIFT_NOTHROW
+#endif
+;
+@end
+
+#pragma mark -
+
+/**
+
+ */
+typedef NS_ENUM(NSUInteger, AFHTTPRequestQueryStringSerializationStyle) {
+    AFHTTPRequestQueryStringDefaultStyle = 0,
+};
+
+@protocol AFMultipartFormData;
+
+/**
+ `AFHTTPRequestSerializer` conforms to the `AFURLRequestSerialization` & `AFURLResponseSerialization` protocols, offering a concrete base implementation of query string / URL form-encoded parameter serialization and default request headers, as well as response status code and content type validation.
+
+ Any request or response serializer dealing with HTTP is encouraged to subclass `AFHTTPRequestSerializer` in order to ensure consistent default behavior.
+ */
+@interface AFHTTPRequestSerializer : NSObject <AFURLRequestSerialization>
+
+/**
+ The string encoding used to serialize parameters. `NSUTF8StringEncoding` by default.
+ */
+@property (nonatomic, assign) NSStringEncoding stringEncoding;
+
+/**
+ Whether created requests can use the device’s cellular radio (if present). `YES` by default.
+
+ @see NSMutableURLRequest -setAllowsCellularAccess:
+ */
+@property (nonatomic, assign) BOOL allowsCellularAccess;
+
+/**
+ The cache policy of created requests. `NSURLRequestUseProtocolCachePolicy` by default.
+
+ @see NSMutableURLRequest -setCachePolicy:
+ */
+@property (nonatomic, assign) NSURLRequestCachePolicy cachePolicy;
+
+/**
+ Whether created requests should use the default cookie handling. `YES` by default.
+
+ @see NSMutableURLRequest -setHTTPShouldHandleCookies:
+ */
+@property (nonatomic, assign) BOOL HTTPShouldHandleCookies;
+
+/**
+ Whether created requests can continue transmitting data before receiving a response from an earlier transmission. `NO` by default
+
+ @see NSMutableURLRequest -setHTTPShouldUsePipelining:
+ */
+@property (nonatomic, assign) BOOL HTTPShouldUsePipelining;
+
+/**
+ The network service type for created requests. `NSURLNetworkServiceTypeDefault` by default.
+
+ @see NSMutableURLRequest -setNetworkServiceType:
+ */
+@property (nonatomic, assign) NSURLRequestNetworkServiceType networkServiceType;
+
+/**
+ The timeout interval, in seconds, for created requests. The default timeout interval is 60 seconds.
+
+ @see NSMutableURLRequest -setTimeoutInterval:
+ */
+@property (nonatomic, assign) NSTimeInterval timeoutInterval;
+
+///---------------------------------------
+/// @name Configuring HTTP Request Headers
+///---------------------------------------
+
+/**
+ Default HTTP header field values to be applied to serialized requests. By default, these include the following:
+
+ - `Accept-Language` with the contents of `NSLocale +preferredLanguages`
+ - `User-Agent` with the contents of various bundle identifiers and OS designations
+
+ @discussion To add or remove default request headers, use `setValue:forHTTPHeaderField:`.
+ */
+@property (readonly, nonatomic, strong) NSDictionary *HTTPRequestHeaders;
+
+/**
+ Creates and returns a serializer with default configuration.
+ */
++ (instancetype)serializer;
+
+/**
+ Sets the value for the HTTP headers set in request objects made by the HTTP client. If `nil`, removes the existing value for that header.
+
+ @param field The HTTP header to set a default value for
+ @param value The value set as default for the specified header, or `nil`
+ */
+- (void)setValue:(nullable NSString *)value
+forHTTPHeaderField:(NSString *)field;
+
+/**
+ Returns the value for the HTTP headers set in the request serializer.
+
+ @param field The HTTP header to retrieve the default value for
+
+ @return The value set as default for the specified header, or `nil`
+ */
+- (nullable NSString *)valueForHTTPHeaderField:(NSString *)field;
+
+/**
+ Sets the "Authorization" HTTP header set in request objects made by the HTTP client to a basic authentication value with Base64-encoded username and password. This overwrites any existing value for this header.
+
+ @param username The HTTP basic auth username
+ @param password The HTTP basic auth password
+ */
+- (void)setAuthorizationHeaderFieldWithUsername:(NSString *)username
+                                       password:(NSString *)password;
+
+/**
+ @deprecated This method has been deprecated. Use -setValue:forHTTPHeaderField: instead.
+ */
+- (void)setAuthorizationHeaderFieldWithToken:(NSString *)token DEPRECATED_ATTRIBUTE;
+
+
+/**
+ Clears any existing value for the "Authorization" HTTP header.
+ */
+- (void)clearAuthorizationHeader;
+
+///-------------------------------------------------------
+/// @name Configuring Query String Parameter Serialization
+///-------------------------------------------------------
+
+/**
+ HTTP methods for which serialized requests will encode parameters as a query string. `GET`, `HEAD`, and `DELETE` by default.
+ */
+@property (nonatomic, strong) NSSet *HTTPMethodsEncodingParametersInURI;
+
+/**
+ Set the method of query string serialization according to one of the pre-defined styles.
+
+ @param style The serialization style.
+
+ @see AFHTTPRequestQueryStringSerializationStyle
+ */
+- (void)setQueryStringSerializationWithStyle:(AFHTTPRequestQueryStringSerializationStyle)style;
+
+/**
+ Set the a custom method of query string serialization according to the specified block.
+
+ @param block A block that defines a process of encoding parameters into a query string. This block returns the query string and takes three arguments: the request, the parameters to encode, and the error that occurred when attempting to encode parameters for the given request.
+ */
+- (void)setQueryStringSerializationWithBlock:(nullable NSString * (^)(NSURLRequest *request, id parameters, NSError * __autoreleasing *error))block;
+
+///-------------------------------
+/// @name Creating Request Objects
+///-------------------------------
+
+/**
+ @deprecated This method has been deprecated. Use -requestWithMethod:URLString:parameters:error: instead.
+ */
+- (NSMutableURLRequest *)requestWithMethod:(NSString *)method
+                                 URLString:(NSString *)URLString
+                                parameters:(id)parameters DEPRECATED_ATTRIBUTE;
+
+/**
+ Creates an `NSMutableURLRequest` object with the specified HTTP method and URL string.
+
+ If the HTTP method is `GET`, `HEAD`, or `DELETE`, the parameters will be used to construct a url-encoded query string that is appended to the request's URL. Otherwise, the parameters will be encoded according to the value of the `parameterEncoding` property, and set as the request body.
+
+ @param method The HTTP method for the request, such as `GET`, `POST`, `PUT`, or `DELETE`. This parameter must not be `nil`.
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be either set as a query string for `GET` requests, or the request HTTP body.
+ @param error The error that occurred while constructing the request.
+
+ @return An `NSMutableURLRequest` object.
+ */
+- (NSMutableURLRequest *)requestWithMethod:(NSString *)method
+                                 URLString:(NSString *)URLString
+                                parameters:(nullable id)parameters
+                                     error:(NSError * __nullable __autoreleasing *)error;
+
+/**
+ @deprecated This method has been deprecated. Use -multipartFormRequestWithMethod:URLString:parameters:constructingBodyWithBlock:error: instead.
+ */
+- (NSMutableURLRequest *)multipartFormRequestWithMethod:(NSString *)method
+                                              URLString:(NSString *)URLString
+                                             parameters:(NSDictionary *)parameters
+                              constructingBodyWithBlock:(void (^)(id <AFMultipartFormData> formData))block DEPRECATED_ATTRIBUTE;
+
+/**
+ Creates an `NSMutableURLRequest` object with the specified HTTP method and URLString, and constructs a `multipart/form-data` HTTP body, using the specified parameters and multipart form data block. See http://www.w3.org/TR/html4/interact/forms.html#h-17.13.4.2
+
+ Multipart form requests are automatically streamed, reading files directly from disk along with in-memory data in a single HTTP body. The resulting `NSMutableURLRequest` object has an `HTTPBodyStream` property, so refrain from setting `HTTPBodyStream` or `HTTPBody` on this request object, as it will clear out the multipart form body stream.
+
+ @param method The HTTP method for the request. This parameter must not be `GET` or `HEAD`, or `nil`.
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded and set in the request HTTP body.
+ @param block A block that takes a single argument and appends data to the HTTP body. The block argument is an object adopting the `AFMultipartFormData` protocol.
+ @param error The error that occurred while constructing the request.
+
+ @return An `NSMutableURLRequest` object
+ */
+- (NSMutableURLRequest *)multipartFormRequestWithMethod:(NSString *)method
+                                              URLString:(NSString *)URLString
+                                             parameters:(nullable NSDictionary *)parameters
+                              constructingBodyWithBlock:(nullable void (^)(id <AFMultipartFormData> formData))block
+                                                  error:(NSError * __nullable __autoreleasing *)error;
+
+/**
+ Creates an `NSMutableURLRequest` by removing the `HTTPBodyStream` from a request, and asynchronously writing its contents into the specified file, invoking the completion handler when finished.
+
+ @param request The multipart form request. The `HTTPBodyStream` property of `request` must not be `nil`.
+ @param fileURL The file URL to write multipart form contents to.
+ @param handler A handler block to execute.
+
+ @discussion There is a bug in `NSURLSessionTask` that causes requests to not send a `Content-Length` header when streaming contents from an HTTP body, which is notably problematic when interacting with the Amazon S3 webservice. As a workaround, this method takes a request constructed with `multipartFormRequestWithMethod:URLString:parameters:constructingBodyWithBlock:error:`, or any other request with an `HTTPBodyStream`, writes the contents to the specified file and returns a copy of the original request with the `HTTPBodyStream` property set to `nil`. From here, the file can either be passed to `AFURLSessionManager -uploadTaskWithRequest:fromFile:progress:completionHandler:`, or have its contents read into an `NSData` that's assigned to the `HTTPBody` property of the request.
+
+ @see https://github.com/AFNetworking/AFNetworking/issues/1398
+ */
+- (NSMutableURLRequest *)requestWithMultipartFormRequest:(NSURLRequest *)request
+                             writingStreamContentsToFile:(NSURL *)fileURL
+                                       completionHandler:(nullable void (^)(NSError * __nullable error))handler;
+
+@end
+
+#pragma mark -
+
+/**
+ The `AFMultipartFormData` protocol defines the methods supported by the parameter in the block argument of `AFHTTPRequestSerializer -multipartFormRequestWithMethod:URLString:parameters:constructingBodyWithBlock:`.
+ */
+@protocol AFMultipartFormData
+
+/**
+ Appends the HTTP header `Content-Disposition: file; filename=#{generated filename}; name=#{name}"` and `Content-Type: #{generated mimeType}`, followed by the encoded file data and the multipart form boundary.
+
+ The filename and MIME type for this data in the form will be automatically generated, using the last path component of the `fileURL` and system associated MIME type for the `fileURL` extension, respectively.
+
+ @param fileURL The URL corresponding to the file whose content will be appended to the form. This parameter must not be `nil`.
+ @param name The name to be associated with the specified data. This parameter must not be `nil`.
+ @param error If an error occurs, upon return contains an `NSError` object that describes the problem.
+
+ @return `YES` if the file data was successfully appended, otherwise `NO`.
+ */
+- (BOOL)appendPartWithFileURL:(NSURL *)fileURL
+                         name:(NSString *)name
+                        error:(NSError * __nullable __autoreleasing *)error;
+
+/**
+ Appends the HTTP header `Content-Disposition: file; filename=#{filename}; name=#{name}"` and `Content-Type: #{mimeType}`, followed by the encoded file data and the multipart form boundary.
+
+ @param fileURL The URL corresponding to the file whose content will be appended to the form. This parameter must not be `nil`.
+ @param name The name to be associated with the specified data. This parameter must not be `nil`.
+ @param fileName The file name to be used in the `Content-Disposition` header. This parameter must not be `nil`.
+ @param mimeType The declared MIME type of the file data. This parameter must not be `nil`.
+ @param error If an error occurs, upon return contains an `NSError` object that describes the problem.
+
+ @return `YES` if the file data was successfully appended otherwise `NO`.
+ */
+- (BOOL)appendPartWithFileURL:(NSURL *)fileURL
+                         name:(NSString *)name
+                     fileName:(NSString *)fileName
+                     mimeType:(NSString *)mimeType
+                        error:(NSError * __nullable __autoreleasing *)error;
+
+/**
+ Appends the HTTP header `Content-Disposition: file; filename=#{filename}; name=#{name}"` and `Content-Type: #{mimeType}`, followed by the data from the input stream and the multipart form boundary.
+
+ @param inputStream The input stream to be appended to the form data
+ @param name The name to be associated with the specified input stream. This parameter must not be `nil`.
+ @param fileName The filename to be associated with the specified input stream. This parameter must not be `nil`.
+ @param length The length of the specified input stream in bytes.
+ @param mimeType The MIME type of the specified data. (For example, the MIME type for a JPEG image is image/jpeg.) For a list of valid MIME types, see http://www.iana.org/assignments/media-types/. This parameter must not be `nil`.
+ */
+- (void)appendPartWithInputStream:(nullable NSInputStream *)inputStream
+                             name:(NSString *)name
+                         fileName:(NSString *)fileName
+                           length:(int64_t)length
+                         mimeType:(NSString *)mimeType;
+
+/**
+ Appends the HTTP header `Content-Disposition: file; filename=#{filename}; name=#{name}"` and `Content-Type: #{mimeType}`, followed by the encoded file data and the multipart form boundary.
+
+ @param data The data to be encoded and appended to the form data.
+ @param name The name to be associated with the specified data. This parameter must not be `nil`.
+ @param fileName The filename to be associated with the specified data. This parameter must not be `nil`.
+ @param mimeType The MIME type of the specified data. (For example, the MIME type for a JPEG image is image/jpeg.) For a list of valid MIME types, see http://www.iana.org/assignments/media-types/. This parameter must not be `nil`.
+ */
+- (void)appendPartWithFileData:(NSData *)data
+                          name:(NSString *)name
+                      fileName:(NSString *)fileName
+                      mimeType:(NSString *)mimeType;
+
+/**
+ Appends the HTTP headers `Content-Disposition: form-data; name=#{name}"`, followed by the encoded data and the multipart form boundary.
+
+ @param data The data to be encoded and appended to the form data.
+ @param name The name to be associated with the specified data. This parameter must not be `nil`.
+ */
+
+- (void)appendPartWithFormData:(NSData *)data
+                          name:(NSString *)name;
+
+
+/**
+ Appends HTTP headers, followed by the encoded data and the multipart form boundary.
+
+ @param headers The HTTP headers to be appended to the form data.
+ @param body The data to be encoded and appended to the form data. This parameter must not be `nil`.
+ */
+- (void)appendPartWithHeaders:(nullable NSDictionary *)headers
+                         body:(NSData *)body;
+
+/**
+ Throttles request bandwidth by limiting the packet size and adding a delay for each chunk read from the upload stream.
+
+ When uploading over a 3G or EDGE connection, requests may fail with "request body stream exhausted". Setting a maximum packet size and delay according to the recommended values (`kAFUploadStream3GSuggestedPacketSize` and `kAFUploadStream3GSuggestedDelay`) lowers the risk of the input stream exceeding its allocated bandwidth. Unfortunately, there is no definite way to distinguish between a 3G, EDGE, or LTE connection over `NSURLConnection`. As such, it is not recommended that you throttle bandwidth based solely on network reachability. Instead, you should consider checking for the "request body stream exhausted" in a failure block, and then retrying the request with throttled bandwidth.
+
+ @param numberOfBytes Maximum packet size, in number of bytes. The default packet size for an input stream is 16kb.
+ @param delay Duration of delay each time a packet is read. By default, no delay is set.
+ */
+- (void)throttleBandwidthWithPacketSize:(NSUInteger)numberOfBytes
+                                  delay:(NSTimeInterval)delay;
+
+@end
+
+#pragma mark -
+
+/**
+ `AFJSONRequestSerializer` is a subclass of `AFHTTPRequestSerializer` that encodes parameters as JSON using `NSJSONSerialization`, setting the `Content-Type` of the encoded request to `application/json`.
+ */
+@interface AFJSONRequestSerializer : AFHTTPRequestSerializer
+
+/**
+ Options for writing the request JSON data from Foundation objects. For possible values, see the `NSJSONSerialization` documentation section "NSJSONWritingOptions". `0` by default.
+ */
+@property (nonatomic, assign) NSJSONWritingOptions writingOptions;
+
+/**
+ Creates and returns a JSON serializer with specified reading and writing options.
+
+ @param writingOptions The specified JSON writing options.
+ */
++ (instancetype)serializerWithWritingOptions:(NSJSONWritingOptions)writingOptions;
+
+@end
+
+#pragma mark -
+
+/**
+ `AFPropertyListRequestSerializer` is a subclass of `AFHTTPRequestSerializer` that encodes parameters as JSON using `NSPropertyListSerializer`, setting the `Content-Type` of the encoded request to `application/x-plist`.
+ */
+@interface AFPropertyListRequestSerializer : AFHTTPRequestSerializer
+
+/**
+ The property list format. Possible values are described in "NSPropertyListFormat".
+ */
+@property (nonatomic, assign) NSPropertyListFormat format;
+
+/**
+ @warning The `writeOptions` property is currently unused.
+ */
+@property (nonatomic, assign) NSPropertyListWriteOptions writeOptions;
+
+/**
+ Creates and returns a property list serializer with a specified format, read options, and write options.
+
+ @param format The property list format.
+ @param writeOptions The property list write options.
+
+ @warning The `writeOptions` property is currently unused.
+ */
++ (instancetype)serializerWithFormat:(NSPropertyListFormat)format
+                        writeOptions:(NSPropertyListWriteOptions)writeOptions;
+
+@end
+
+#pragma mark -
+
+///----------------
+/// @name Constants
+///----------------
+
+/**
+ ## Error Domains
+
+ The following error domain is predefined.
+
+ - `NSString * const AFURLRequestSerializationErrorDomain`
+
+ ### Constants
+
+ `AFURLRequestSerializationErrorDomain`
+ AFURLRequestSerializer errors. Error codes for `AFURLRequestSerializationErrorDomain` correspond to codes in `NSURLErrorDomain`.
+ */
+FOUNDATION_EXPORT NSString * const AFURLRequestSerializationErrorDomain;
+
+/**
+ ## User info dictionary keys
+
+ These keys may exist in the user info dictionary, in addition to those defined for NSError.
+
+ - `NSString * const AFNetworkingOperationFailingURLRequestErrorKey`
+
+ ### Constants
+
+ `AFNetworkingOperationFailingURLRequestErrorKey`
+ The corresponding value is an `NSURLRequest` containing the request of the operation associated with an error. This key is only present in the `AFURLRequestSerializationErrorDomain`.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingOperationFailingURLRequestErrorKey;
+
+/**
+ ## Throttling Bandwidth for HTTP Request Input Streams
+
+ @see -throttleBandwidthWithPacketSize:delay:
+
+ ### Constants
+
+ `kAFUploadStream3GSuggestedPacketSize`
+ Maximum packet size, in number of bytes. Equal to 16kb.
+
+ `kAFUploadStream3GSuggestedDelay`
+ Duration of delay each time a packet is read. Equal to 0.2 seconds.
+ */
+FOUNDATION_EXPORT NSUInteger const kAFUploadStream3GSuggestedPacketSize;
+FOUNDATION_EXPORT NSTimeInterval const kAFUploadStream3GSuggestedDelay;
+
+NS_ASSUME_NONNULL_END

Example/Pods/AFNetworking/AFNetworking/AFURLRequestSerialization.m

+// AFURLRequestSerialization.m
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "AFURLRequestSerialization.h"
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED
+#import <MobileCoreServices/MobileCoreServices.h>
+#else
+#import <CoreServices/CoreServices.h>
+#endif
+
+NSString * const AFURLRequestSerializationErrorDomain = @"com.alamofire.error.serialization.request";
+NSString * const AFNetworkingOperationFailingURLRequestErrorKey = @"com.alamofire.serialization.request.error.response";
+
+typedef NSString * (^AFQueryStringSerializationBlock)(NSURLRequest *request, id parameters, NSError *__autoreleasing *error);
+
+static NSString * AFBase64EncodedStringFromString(NSString *string) {
+    NSData *data = [NSData dataWithBytes:[string UTF8String] length:[string lengthOfBytesUsingEncoding:NSUTF8StringEncoding]];
+    NSUInteger length = [data length];
+    NSMutableData *mutableData = [NSMutableData dataWithLength:((length + 2) / 3) * 4];
+
+    uint8_t *input = (uint8_t *)[data bytes];
+    uint8_t *output = (uint8_t *)[mutableData mutableBytes];
+
+    for (NSUInteger i = 0; i < length; i += 3) {
+        NSUInteger value = 0;
+        for (NSUInteger j = i; j < (i + 3); j++) {
+            value <<= 8;
+            if (j < length) {
+                value |= (0xFF & input[j]);
+            }
+        }
+
+        static uint8_t const kAFBase64EncodingTable[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+        NSUInteger idx = (i / 3) * 4;
+        output[idx + 0] = kAFBase64EncodingTable[(value >> 18) & 0x3F];
+        output[idx + 1] = kAFBase64EncodingTable[(value >> 12) & 0x3F];
+        output[idx + 2] = (i + 1) < length ? kAFBase64EncodingTable[(value >> 6)  & 0x3F] : '=';
+        output[idx + 3] = (i + 2) < length ? kAFBase64EncodingTable[(value >> 0)  & 0x3F] : '=';
+    }
+
+    return [[NSString alloc] initWithData:mutableData encoding:NSASCIIStringEncoding];
+}
+
+/**
+ Returns a percent-escaped string following RFC 3986 for a query string key or value.
+ RFC 3986 states that the following characters are "reserved" characters.
+    - General Delimiters: ":", "#", "[", "]", "@", "?", "/"
+    - Sub-Delimiters: "!", "$", "&", "'", "(", ")", "*", "+", ",", ";", "="
+
+ In RFC 3986 - Section 3.4, it states that the "?" and "/" characters should not be escaped to allow
+ query strings to include a URL. Therefore, all "reserved" characters with the exception of "?" and "/"
+ should be percent-escaped in the query string.
+    - parameter string: The string to be percent-escaped.
+    - returns: The percent-escaped string.
+ */
+static NSString * AFPercentEscapedStringFromString(NSString *string) {
+    static NSString * const kAFCharactersGeneralDelimitersToEncode = @":#[]@"; // does not include "?" or "/" due to RFC 3986 - Section 3.4
+    static NSString * const kAFCharactersSubDelimitersToEncode = @"!$&'()*+,;=";
+
+    NSMutableCharacterSet * allowedCharacterSet = [[NSCharacterSet URLQueryAllowedCharacterSet] mutableCopy];
+    [allowedCharacterSet removeCharactersInString:[kAFCharactersGeneralDelimitersToEncode stringByAppendingString:kAFCharactersSubDelimitersToEncode]];
+
+	// FIXME: https://github.com/AFNetworking/AFNetworking/pull/3028
+    // return [string stringByAddingPercentEncodingWithAllowedCharacters:allowedCharacterSet];
+
+    static NSUInteger const batchSize = 50;
+
+    NSUInteger index = 0;
+    NSMutableString *escaped = @"".mutableCopy;
+
+    while (index < string.length) {
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wgnu"
+        NSUInteger length = MIN(string.length - index, batchSize);
+#pragma GCC diagnostic pop
+        NSRange range = NSMakeRange(index, length);
+
+        // To avoid breaking up character sequences such as 👴🏻👮🏽
+        range = [string rangeOfComposedCharacterSequencesForRange:range];
+
+        NSString *substring = [string substringWithRange:range];
+        NSString *encoded = [substring stringByAddingPercentEncodingWithAllowedCharacters:allowedCharacterSet];
+        [escaped appendString:encoded];
+
+        index += range.length;
+    }
+
+	return escaped;
+}
+
+#pragma mark -
+
+@interface AFQueryStringPair : NSObject
+@property (readwrite, nonatomic, strong) id field;
+@property (readwrite, nonatomic, strong) id value;
+
+- (id)initWithField:(id)field value:(id)value;
+
+- (NSString *)URLEncodedStringValue;
+@end
+
+@implementation AFQueryStringPair
+
+- (id)initWithField:(id)field value:(id)value {
+    self = [super init];
+    if (!self) {
+        return nil;
+    }
+
+    self.field = field;
+    self.value = value;
+
+    return self;
+}
+
+- (NSString *)URLEncodedStringValue {
+    if (!self.value || [self.value isEqual:[NSNull null]]) {
+        return AFPercentEscapedStringFromString([self.field description]);
+    } else {
+        return [NSString stringWithFormat:@"%@=%@", AFPercentEscapedStringFromString([self.field description]), AFPercentEscapedStringFromString([self.value description])];
+    }
+}
+
+@end
+
+#pragma mark -
+
+FOUNDATION_EXPORT NSArray * AFQueryStringPairsFromDictionary(NSDictionary *dictionary);
+FOUNDATION_EXPORT NSArray * AFQueryStringPairsFromKeyAndValue(NSString *key, id value);
+
+static NSString * AFQueryStringFromParameters(NSDictionary *parameters) {
+    NSMutableArray *mutablePairs = [NSMutableArray array];
+    for (AFQueryStringPair *pair in AFQueryStringPairsFromDictionary(parameters)) {
+        [mutablePairs addObject:[pair URLEncodedStringValue]];
+    }
+
+    return [mutablePairs componentsJoinedByString:@"&"];
+}
+
+NSArray * AFQueryStringPairsFromDictionary(NSDictionary *dictionary) {
+    return AFQueryStringPairsFromKeyAndValue(nil, dictionary);
+}
+
+NSArray * AFQueryStringPairsFromKeyAndValue(NSString *key, id value) {
+    NSMutableArray *mutableQueryStringComponents = [NSMutableArray array];
+
+    NSSortDescriptor *sortDescriptor = [NSSortDescriptor sortDescriptorWithKey:@"description" ascending:YES selector:@selector(compare:)];
+
+    if ([value isKindOfClass:[NSDictionary class]]) {
+        NSDictionary *dictionary = value;
+        // Sort dictionary keys to ensure consistent ordering in query string, which is important when deserializing potentially ambiguous sequences, such as an array of dictionaries
+        for (id nestedKey in [dictionary.allKeys sortedArrayUsingDescriptors:@[ sortDescriptor ]]) {
+            id nestedValue = dictionary[nestedKey];
+            if (nestedValue) {
+                [mutableQueryStringComponents addObjectsFromArray:AFQueryStringPairsFromKeyAndValue((key ? [NSString stringWithFormat:@"%@[%@]", key, nestedKey] : nestedKey), nestedValue)];
+            }
+        }
+    } else if ([value isKindOfClass:[NSArray class]]) {
+        NSArray *array = value;
+        for (id nestedValue in array) {
+            [mutableQueryStringComponents addObjectsFromArray:AFQueryStringPairsFromKeyAndValue([NSString stringWithFormat:@"%@[]", key], nestedValue)];
+        }
+    } else if ([value isKindOfClass:[NSSet class]]) {
+        NSSet *set = value;
+        for (id obj in [set sortedArrayUsingDescriptors:@[ sortDescriptor ]]) {
+            [mutableQueryStringComponents addObjectsFromArray:AFQueryStringPairsFromKeyAndValue(key, obj)];
+        }
+    } else {
+        [mutableQueryStringComponents addObject:[[AFQueryStringPair alloc] initWithField:key value:value]];
+    }
+
+    return mutableQueryStringComponents;
+}
+
+#pragma mark -
+
+@interface AFStreamingMultipartFormData : NSObject <AFMultipartFormData>
+- (instancetype)initWithURLRequest:(NSMutableURLRequest *)urlRequest
+                    stringEncoding:(NSStringEncoding)encoding;
+
+- (NSMutableURLRequest *)requestByFinalizingMultipartFormData;
+@end
+
+#pragma mark -
+
+static NSArray * AFHTTPRequestSerializerObservedKeyPaths() {
+    static NSArray *_AFHTTPRequestSerializerObservedKeyPaths = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        _AFHTTPRequestSerializerObservedKeyPaths = @[NSStringFromSelector(@selector(allowsCellularAccess)), NSStringFromSelector(@selector(cachePolicy)), NSStringFromSelector(@selector(HTTPShouldHandleCookies)), NSStringFromSelector(@selector(HTTPShouldUsePipelining)), NSStringFromSelector(@selector(networkServiceType)), NSStringFromSelector(@selector(timeoutInterval))];
+    });
+
+    return _AFHTTPRequestSerializerObservedKeyPaths;
+}
+
+static void *AFHTTPRequestSerializerObserverContext = &AFHTTPRequestSerializerObserverContext;
+
+@interface AFHTTPRequestSerializer ()
+@property (readwrite, nonatomic, strong) NSMutableSet *mutableObservedChangedKeyPaths;
+@property (readwrite, nonatomic, strong) NSMutableDictionary *mutableHTTPRequestHeaders;
+@property (readwrite, nonatomic, assign) AFHTTPRequestQueryStringSerializationStyle queryStringSerializationStyle;
+@property (readwrite, nonatomic, copy) AFQueryStringSerializationBlock queryStringSerialization;
+@end
+
+@implementation AFHTTPRequestSerializer
+
++ (instancetype)serializer {
+    return [[self alloc] init];
+}
+
+- (instancetype)init {
+    self = [super init];
+    if (!self) {
+        return nil;
+    }
+
+    self.stringEncoding = NSUTF8StringEncoding;
+
+    self.mutableHTTPRequestHeaders = [NSMutableDictionary dictionary];
+
+    // Accept-Language HTTP Header; see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.4
+    NSMutableArray *acceptLanguagesComponents = [NSMutableArray array];
+    [[NSLocale preferredLanguages] enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
+        float q = 1.0f - (idx * 0.1f);
+        [acceptLanguagesComponents addObject:[NSString stringWithFormat:@"%@;q=%0.1g", obj, q]];
+        *stop = q <= 0.5f;
+    }];
+    [self setValue:[acceptLanguagesComponents componentsJoinedByString:@", "] forHTTPHeaderField:@"Accept-Language"];
+
+    NSString *userAgent = nil;
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+#if TARGET_OS_IOS
+    // User-Agent Header; see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.43
+    userAgent = [NSString stringWithFormat:@"%@/%@ (%@; iOS %@; Scale/%0.2f)", [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleExecutableKey] ?: [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleIdentifierKey], [[NSBundle mainBundle] infoDictionary][@"CFBundleShortVersionString"] ?: [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleVersionKey], [[UIDevice currentDevice] model], [[UIDevice currentDevice] systemVersion], [[UIScreen mainScreen] scale]];
+#elif TARGET_OS_WATCH
+    // User-Agent Header; see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.43
+    userAgent = [NSString stringWithFormat:@"%@/%@ (%@; watchOS %@; Scale/%0.2f)", [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleExecutableKey] ?: [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleIdentifierKey], [[NSBundle mainBundle] infoDictionary][@"CFBundleShortVersionString"] ?: [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleVersionKey], [[WKInterfaceDevice currentDevice] model], [[WKInterfaceDevice currentDevice] systemVersion], [[WKInterfaceDevice currentDevice] screenScale]];
+#elif defined(__MAC_OS_X_VERSION_MIN_REQUIRED)
+    userAgent = [NSString stringWithFormat:@"%@/%@ (Mac OS X %@)", [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleExecutableKey] ?: [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleIdentifierKey], [[NSBundle mainBundle] infoDictionary][@"CFBundleShortVersionString"] ?: [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleVersionKey], [[NSProcessInfo processInfo] operatingSystemVersionString]];
+#endif
+#pragma clang diagnostic pop
+    if (userAgent) {
+        if (![userAgent canBeConvertedToEncoding:NSASCIIStringEncoding]) {
+            NSMutableString *mutableUserAgent = [userAgent mutableCopy];
+            if (CFStringTransform((__bridge CFMutableStringRef)(mutableUserAgent), NULL, (__bridge CFStringRef)@"Any-Latin; Latin-ASCII; [:^ASCII:] Remove", false)) {
+                userAgent = mutableUserAgent;
+            }
+        }
+        [self setValue:userAgent forHTTPHeaderField:@"User-Agent"];
+    }
+
+    // HTTP Method Definitions; see http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html
+    self.HTTPMethodsEncodingParametersInURI = [NSSet setWithObjects:@"GET", @"HEAD", @"DELETE", nil];
+
+    self.mutableObservedChangedKeyPaths = [NSMutableSet set];
+    for (NSString *keyPath in AFHTTPRequestSerializerObservedKeyPaths()) {
+        if ([self respondsToSelector:NSSelectorFromString(keyPath)]) {
+            [self addObserver:self forKeyPath:keyPath options:NSKeyValueObservingOptionNew context:AFHTTPRequestSerializerObserverContext];
+        }
+    }
+
+    return self;
+}
+
+- (void)dealloc {
+    for (NSString *keyPath in AFHTTPRequestSerializerObservedKeyPaths()) {
+        if ([self respondsToSelector:NSSelectorFromString(keyPath)]) {
+            [self removeObserver:self forKeyPath:keyPath context:AFHTTPRequestSerializerObserverContext];
+        }
+    }
+}
+
+#pragma mark -
+
+// Workarounds for crashing behavior using Key-Value Observing with XCTest
+// See https://github.com/AFNetworking/AFNetworking/issues/2523
+
+- (void)setAllowsCellularAccess:(BOOL)allowsCellularAccess {
+    [self willChangeValueForKey:NSStringFromSelector(@selector(allowsCellularAccess))];
+    _allowsCellularAccess = allowsCellularAccess;
+    [self didChangeValueForKey:NSStringFromSelector(@selector(allowsCellularAccess))];
+}
+
+- (void)setCachePolicy:(NSURLRequestCachePolicy)cachePolicy {
+    [self willChangeValueForKey:NSStringFromSelector(@selector(cachePolicy))];
+    _cachePolicy = cachePolicy;
+    [self didChangeValueForKey:NSStringFromSelector(@selector(cachePolicy))];
+}
+
+- (void)setHTTPShouldHandleCookies:(BOOL)HTTPShouldHandleCookies {
+    [self willChangeValueForKey:NSStringFromSelector(@selector(HTTPShouldHandleCookies))];
+    _HTTPShouldHandleCookies = HTTPShouldHandleCookies;
+    [self didChangeValueForKey:NSStringFromSelector(@selector(HTTPShouldHandleCookies))];
+}
+
+- (void)setHTTPShouldUsePipelining:(BOOL)HTTPShouldUsePipelining {
+    [self willChangeValueForKey:NSStringFromSelector(@selector(HTTPShouldUsePipelining))];
+    _HTTPShouldUsePipelining = HTTPShouldUsePipelining;
+    [self didChangeValueForKey:NSStringFromSelector(@selector(HTTPShouldUsePipelining))];
+}
+
+- (void)setNetworkServiceType:(NSURLRequestNetworkServiceType)networkServiceType {
+    [self willChangeValueForKey:NSStringFromSelector(@selector(networkServiceType))];
+    _networkServiceType = networkServiceType;
+    [self didChangeValueForKey:NSStringFromSelector(@selector(networkServiceType))];
+}
+
+- (void)setTimeoutInterval:(NSTimeInterval)timeoutInterval {
+    [self willChangeValueForKey:NSStringFromSelector(@selector(timeoutInterval))];
+    _timeoutInterval = timeoutInterval;
+    [self didChangeValueForKey:NSStringFromSelector(@selector(timeoutInterval))];
+}
+
+#pragma mark -
+
+- (NSDictionary *)HTTPRequestHeaders {
+    return [NSDictionary dictionaryWithDictionary:self.mutableHTTPRequestHeaders];
+}
+
+- (void)setValue:(NSString *)value
+forHTTPHeaderField:(NSString *)field
+{
+	[self.mutableHTTPRequestHeaders setValue:value forKey:field];
+}
+
+- (NSString *)valueForHTTPHeaderField:(NSString *)field {
+    return [self.mutableHTTPRequestHeaders valueForKey:field];
+}
+
+- (void)setAuthorizationHeaderFieldWithUsername:(NSString *)username
+                                       password:(NSString *)password
+{
+	NSString *basicAuthCredentials = [NSString stringWithFormat:@"%@:%@", username, password];
+    [self setValue:[NSString stringWithFormat:@"Basic %@", AFBase64EncodedStringFromString(basicAuthCredentials)] forHTTPHeaderField:@"Authorization"];
+}
+
+- (void)setAuthorizationHeaderFieldWithToken:(NSString *)token {
+    [self setValue:[NSString stringWithFormat:@"Token token=\"%@\"", token] forHTTPHeaderField:@"Authorization"];
+}
+
+- (void)clearAuthorizationHeader {
+	[self.mutableHTTPRequestHeaders removeObjectForKey:@"Authorization"];
+}
+
+#pragma mark -
+
+- (void)setQueryStringSerializationWithStyle:(AFHTTPRequestQueryStringSerializationStyle)style {
+    self.queryStringSerializationStyle = style;
+    self.queryStringSerialization = nil;
+}
+
+- (void)setQueryStringSerializationWithBlock:(NSString *(^)(NSURLRequest *, id, NSError *__autoreleasing *))block {
+    self.queryStringSerialization = block;
+}
+
+#pragma mark -
+
+- (NSMutableURLRequest *)requestWithMethod:(NSString *)method
+                                 URLString:(NSString *)URLString
+                                parameters:(id)parameters
+{
+    return [self requestWithMethod:method URLString:URLString parameters:parameters error:nil];
+}
+
+- (NSMutableURLRequest *)requestWithMethod:(NSString *)method
+                                 URLString:(NSString *)URLString
+                                parameters:(id)parameters
+                                     error:(NSError *__autoreleasing *)error
+{
+    NSParameterAssert(method);
+    NSParameterAssert(URLString);
+
+    NSURL *url = [NSURL URLWithString:URLString];
+
+    NSParameterAssert(url);
+
+    NSMutableURLRequest *mutableRequest = [[NSMutableURLRequest alloc] initWithURL:url];
+    mutableRequest.HTTPMethod = method;
+
+    for (NSString *keyPath in AFHTTPRequestSerializerObservedKeyPaths()) {
+        if ([self.mutableObservedChangedKeyPaths containsObject:keyPath]) {
+            [mutableRequest setValue:[self valueForKeyPath:keyPath] forKey:keyPath];
+        }
+    }
+
+    mutableRequest = [[self requestBySerializingRequest:mutableRequest withParameters:parameters error:error] mutableCopy];
+
+	return mutableRequest;
+}
+
+- (NSMutableURLRequest *)multipartFormRequestWithMethod:(NSString *)method
+                                              URLString:(NSString *)URLString
+                                             parameters:(NSDictionary *)parameters
+                              constructingBodyWithBlock:(void (^)(id <AFMultipartFormData> formData))block
+{
+    return [self multipartFormRequestWithMethod:method URLString:URLString parameters:parameters constructingBodyWithBlock:block error:nil];
+}
+
+- (NSMutableURLRequest *)multipartFormRequestWithMethod:(NSString *)method
+                                              URLString:(NSString *)URLString
+                                             parameters:(NSDictionary *)parameters
+                              constructingBodyWithBlock:(void (^)(id <AFMultipartFormData> formData))block
+                                                  error:(NSError *__autoreleasing *)error
+{
+    NSParameterAssert(method);
+    NSParameterAssert(![method isEqualToString:@"GET"] && ![method isEqualToString:@"HEAD"]);
+
+    NSMutableURLRequest *mutableRequest = [self requestWithMethod:method URLString:URLString parameters:nil error:error];
+
+    __block AFStreamingMultipartFormData *formData = [[AFStreamingMultipartFormData alloc] initWithURLRequest:mutableRequest stringEncoding:NSUTF8StringEncoding];
+
+    if (parameters) {
+        for (AFQueryStringPair *pair in AFQueryStringPairsFromDictionary(parameters)) {
+            NSData *data = nil;
+            if ([pair.value isKindOfClass:[NSData class]]) {
+                data = pair.value;
+            } else if ([pair.value isEqual:[NSNull null]]) {
+                data = [NSData data];
+            } else {
+                data = [[pair.value description] dataUsingEncoding:self.stringEncoding];
+            }
+
+            if (data) {
+                [formData appendPartWithFormData:data name:[pair.field description]];
+            }
+        }
+    }
+
+    if (block) {
+        block(formData);
+    }
+
+    return [formData requestByFinalizingMultipartFormData];
+}
+
+- (NSMutableURLRequest *)requestWithMultipartFormRequest:(NSURLRequest *)request
+                             writingStreamContentsToFile:(NSURL *)fileURL
+                                       completionHandler:(void (^)(NSError *error))handler
+{
+    NSParameterAssert(request.HTTPBodyStream);
+    NSParameterAssert([fileURL isFileURL]);
+
+    NSInputStream *inputStream = request.HTTPBodyStream;
+    NSOutputStream *outputStream = [[NSOutputStream alloc] initWithURL:fileURL append:NO];
+    __block NSError *error = nil;
+
+    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
+        [inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
+        [outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
+
+        [inputStream open];
+        [outputStream open];
+
+        while ([inputStream hasBytesAvailable] && [outputStream hasSpaceAvailable]) {
+            uint8_t buffer[1024];
+
+            NSInteger bytesRead = [inputStream read:buffer maxLength:1024];
+            if (inputStream.streamError || bytesRead < 0) {
+                error = inputStream.streamError;
+                break;
+            }
+
+            NSInteger bytesWritten = [outputStream write:buffer maxLength:(NSUInteger)bytesRead];
+            if (outputStream.streamError || bytesWritten < 0) {
+                error = outputStream.streamError;
+                break;
+            }
+
+            if (bytesRead == 0 && bytesWritten == 0) {
+                break;
+            }
+        }
+
+        [outputStream close];
+        [inputStream close];
+
+        if (handler) {
+            dispatch_async(dispatch_get_main_queue(), ^{
+                handler(error);
+            });
+        }
+    });
+
+    NSMutableURLRequest *mutableRequest = [request mutableCopy];
+    mutableRequest.HTTPBodyStream = nil;
+
+    return mutableRequest;
+}
+
+#pragma mark - AFURLRequestSerialization
+
+- (NSURLRequest *)requestBySerializingRequest:(NSURLRequest *)request
+                               withParameters:(id)parameters
+                                        error:(NSError *__autoreleasing *)error
+{
+    NSParameterAssert(request);
+
+    NSMutableURLRequest *mutableRequest = [request mutableCopy];
+
+    [self.HTTPRequestHeaders enumerateKeysAndObjectsUsingBlock:^(id field, id value, BOOL * __unused stop) {
+        if (![request valueForHTTPHeaderField:field]) {
+            [mutableRequest setValue:value forHTTPHeaderField:field];
+        }
+    }];
+
+    NSString *query = nil;
+    if (parameters) {
+        if (self.queryStringSerialization) {
+            NSError *serializationError;
+            query = self.queryStringSerialization(request, parameters, &serializationError);
+
+            if (serializationError) {
+                if (error) {
+                    *error = serializationError;
+                }
+
+                return nil;
+            }
+        } else {
+            switch (self.queryStringSerializationStyle) {
+                case AFHTTPRequestQueryStringDefaultStyle:
+                    query = AFQueryStringFromParameters(parameters);
+                    break;
+            }
+        }
+    }
+
+    if ([self.HTTPMethodsEncodingParametersInURI containsObject:[[request HTTPMethod] uppercaseString]]) {
+        if (query) {
+            mutableRequest.URL = [NSURL URLWithString:[[mutableRequest.URL absoluteString] stringByAppendingFormat:mutableRequest.URL.query ? @"&%@" : @"?%@", query]];
+        }
+    } else {
+        // #2864: an empty string is a valid x-www-form-urlencoded payload
+        if (!query) {
+            query = @"";
+        }
+        if (![mutableRequest valueForHTTPHeaderField:@"Content-Type"]) {
+            [mutableRequest setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
+        }
+        [mutableRequest setHTTPBody:[query dataUsingEncoding:self.stringEncoding]];
+    }
+
+    return mutableRequest;
+}
+
+#pragma mark - NSKeyValueObserving
+
++ (BOOL)automaticallyNotifiesObserversForKey:(NSString *)key {
+    if ([AFHTTPRequestSerializerObservedKeyPaths() containsObject:key]) {
+        return NO;
+    }
+
+    return [super automaticallyNotifiesObserversForKey:key];
+}
+
+- (void)observeValueForKeyPath:(NSString *)keyPath
+                      ofObject:(__unused id)object
+                        change:(NSDictionary *)change
+                       context:(void *)context
+{
+    if (context == AFHTTPRequestSerializerObserverContext) {
+        if ([change[NSKeyValueChangeNewKey] isEqual:[NSNull null]]) {
+            [self.mutableObservedChangedKeyPaths removeObject:keyPath];
+        } else {
+            [self.mutableObservedChangedKeyPaths addObject:keyPath];
+        }
+    }
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+    return YES;
+}
+
+- (id)initWithCoder:(NSCoder *)decoder {
+    self = [self init];
+    if (!self) {
+        return nil;
+    }
+
+    self.mutableHTTPRequestHeaders = [[decoder decodeObjectOfClass:[NSDictionary class] forKey:NSStringFromSelector(@selector(mutableHTTPRequestHeaders))] mutableCopy];
+    self.queryStringSerializationStyle = (AFHTTPRequestQueryStringSerializationStyle)[[decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(queryStringSerializationStyle))] unsignedIntegerValue];
+
+    return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+    [coder encodeObject:self.mutableHTTPRequestHeaders forKey:NSStringFromSelector(@selector(mutableHTTPRequestHeaders))];
+    [coder encodeInteger:self.queryStringSerializationStyle forKey:NSStringFromSelector(@selector(queryStringSerializationStyle))];
+}
+
+#pragma mark - NSCopying
+
+- (id)copyWithZone:(NSZone *)zone {
+    AFHTTPRequestSerializer *serializer = [[[self class] allocWithZone:zone] init];
+    serializer.mutableHTTPRequestHeaders = [self.mutableHTTPRequestHeaders mutableCopyWithZone:zone];
+    serializer.queryStringSerializationStyle = self.queryStringSerializationStyle;
+    serializer.queryStringSerialization = self.queryStringSerialization;
+
+    return serializer;
+}
+
+@end
+
+#pragma mark -
+
+static NSString * AFCreateMultipartFormBoundary() {
+    return [NSString stringWithFormat:@"Boundary+%08X%08X", arc4random(), arc4random()];
+}
+
+static NSString * const kAFMultipartFormCRLF = @"\r\n";
+
+static inline NSString * AFMultipartFormInitialBoundary(NSString *boundary) {
+    return [NSString stringWithFormat:@"--%@%@", boundary, kAFMultipartFormCRLF];
+}
+
+static inline NSString * AFMultipartFormEncapsulationBoundary(NSString *boundary) {
+    return [NSString stringWithFormat:@"%@--%@%@", kAFMultipartFormCRLF, boundary, kAFMultipartFormCRLF];
+}
+
+static inline NSString * AFMultipartFormFinalBoundary(NSString *boundary) {
+    return [NSString stringWithFormat:@"%@--%@--%@", kAFMultipartFormCRLF, boundary, kAFMultipartFormCRLF];
+}
+
+static inline NSString * AFContentTypeForPathExtension(NSString *extension) {
+#ifdef __UTTYPE__
+    NSString *UTI = (__bridge_transfer NSString *)UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, (__bridge CFStringRef)extension, NULL);
+    NSString *contentType = (__bridge_transfer NSString *)UTTypeCopyPreferredTagWithClass((__bridge CFStringRef)UTI, kUTTagClassMIMEType);
+    if (!contentType) {
+        return @"application/octet-stream";
+    } else {
+        return contentType;
+    }
+#else
+#pragma unused (extension)
+    return @"application/octet-stream";
+#endif
+}
+
+NSUInteger const kAFUploadStream3GSuggestedPacketSize = 1024 * 16;
+NSTimeInterval const kAFUploadStream3GSuggestedDelay = 0.2;
+
+@interface AFHTTPBodyPart : NSObject
+@property (nonatomic, assign) NSStringEncoding stringEncoding;
+@property (nonatomic, strong) NSDictionary *headers;
+@property (nonatomic, copy) NSString *boundary;
+@property (nonatomic, strong) id body;
+@property (nonatomic, assign) unsigned long long bodyContentLength;
+@property (nonatomic, strong) NSInputStream *inputStream;
+
+@property (nonatomic, assign) BOOL hasInitialBoundary;
+@property (nonatomic, assign) BOOL hasFinalBoundary;
+
+@property (readonly, nonatomic, assign, getter = hasBytesAvailable) BOOL bytesAvailable;
+@property (readonly, nonatomic, assign) unsigned long long contentLength;
+
+- (NSInteger)read:(uint8_t *)buffer
+        maxLength:(NSUInteger)length;
+@end
+
+@interface AFMultipartBodyStream : NSInputStream <NSStreamDelegate>
+@property (nonatomic, assign) NSUInteger numberOfBytesInPacket;
+@property (nonatomic, assign) NSTimeInterval delay;
+@property (nonatomic, strong) NSInputStream *inputStream;
+@property (readonly, nonatomic, assign) unsigned long long contentLength;
+@property (readonly, nonatomic, assign, getter = isEmpty) BOOL empty;
+
+- (id)initWithStringEncoding:(NSStringEncoding)encoding;
+- (void)setInitialAndFinalBoundaries;
+- (void)appendHTTPBodyPart:(AFHTTPBodyPart *)bodyPart;
+@end
+
+#pragma mark -
+
+@interface AFStreamingMultipartFormData ()
+@property (readwrite, nonatomic, copy) NSMutableURLRequest *request;
+@property (readwrite, nonatomic, assign) NSStringEncoding stringEncoding;
+@property (readwrite, nonatomic, copy) NSString *boundary;
+@property (readwrite, nonatomic, strong) AFMultipartBodyStream *bodyStream;
+@end
+
+@implementation AFStreamingMultipartFormData
+
+- (id)initWithURLRequest:(NSMutableURLRequest *)urlRequest
+          stringEncoding:(NSStringEncoding)encoding
+{
+    self = [super init];
+    if (!self) {
+        return nil;
+    }
+
+    self.request = urlRequest;
+    self.stringEncoding = encoding;
+    self.boundary = AFCreateMultipartFormBoundary();
+    self.bodyStream = [[AFMultipartBodyStream alloc] initWithStringEncoding:encoding];
+
+    return self;
+}
+
+- (BOOL)appendPartWithFileURL:(NSURL *)fileURL
+                         name:(NSString *)name
+                        error:(NSError * __autoreleasing *)error
+{
+    NSParameterAssert(fileURL);
+    NSParameterAssert(name);
+
+    NSString *fileName = [fileURL lastPathComponent];
+    NSString *mimeType = AFContentTypeForPathExtension([fileURL pathExtension]);
+
+    return [self appendPartWithFileURL:fileURL name:name fileName:fileName mimeType:mimeType error:error];
+}
+
+- (BOOL)appendPartWithFileURL:(NSURL *)fileURL
+                         name:(NSString *)name
+                     fileName:(NSString *)fileName
+                     mimeType:(NSString *)mimeType
+                        error:(NSError * __autoreleasing *)error
+{
+    NSParameterAssert(fileURL);
+    NSParameterAssert(name);
+    NSParameterAssert(fileName);
+    NSParameterAssert(mimeType);
+
+    if (![fileURL isFileURL]) {
+        NSDictionary *userInfo = @{NSLocalizedFailureReasonErrorKey: NSLocalizedStringFromTable(@"Expected URL to be a file URL", @"AFNetworking", nil)};
+        if (error) {
+            *error = [[NSError alloc] initWithDomain:AFURLRequestSerializationErrorDomain code:NSURLErrorBadURL userInfo:userInfo];
+        }
+
+        return NO;
+    } else if ([fileURL checkResourceIsReachableAndReturnError:error] == NO) {
+        NSDictionary *userInfo = @{NSLocalizedFailureReasonErrorKey: NSLocalizedStringFromTable(@"File URL not reachable.", @"AFNetworking", nil)};
+        if (error) {
+            *error = [[NSError alloc] initWithDomain:AFURLRequestSerializationErrorDomain code:NSURLErrorBadURL userInfo:userInfo];
+        }
+
+        return NO;
+    }
+
+    NSDictionary *fileAttributes = [[NSFileManager defaultManager] attributesOfItemAtPath:[fileURL path] error:error];
+    if (!fileAttributes) {
+        return NO;
+    }
+
+    NSMutableDictionary *mutableHeaders = [NSMutableDictionary dictionary];
+    [mutableHeaders setValue:[NSString stringWithFormat:@"form-data; name=\"%@\"; filename=\"%@\"", name, fileName] forKey:@"Content-Disposition"];
+    [mutableHeaders setValue:mimeType forKey:@"Content-Type"];
+
+    AFHTTPBodyPart *bodyPart = [[AFHTTPBodyPart alloc] init];
+    bodyPart.stringEncoding = self.stringEncoding;
+    bodyPart.headers = mutableHeaders;
+    bodyPart.boundary = self.boundary;
+    bodyPart.body = fileURL;
+    bodyPart.bodyContentLength = [fileAttributes[NSFileSize] unsignedLongLongValue];
+    [self.bodyStream appendHTTPBodyPart:bodyPart];
+
+    return YES;
+}
+
+- (void)appendPartWithInputStream:(NSInputStream *)inputStream
+                             name:(NSString *)name
+                         fileName:(NSString *)fileName
+                           length:(int64_t)length
+                         mimeType:(NSString *)mimeType
+{
+    NSParameterAssert(name);
+    NSParameterAssert(fileName);
+    NSParameterAssert(mimeType);
+
+    NSMutableDictionary *mutableHeaders = [NSMutableDictionary dictionary];
+    [mutableHeaders setValue:[NSString stringWithFormat:@"form-data; name=\"%@\"; filename=\"%@\"", name, fileName] forKey:@"Content-Disposition"];
+    [mutableHeaders setValue:mimeType forKey:@"Content-Type"];
+
+    AFHTTPBodyPart *bodyPart = [[AFHTTPBodyPart alloc] init];
+    bodyPart.stringEncoding = self.stringEncoding;
+    bodyPart.headers = mutableHeaders;
+    bodyPart.boundary = self.boundary;
+    bodyPart.body = inputStream;
+
+    bodyPart.bodyContentLength = (unsigned long long)length;
+
+    [self.bodyStream appendHTTPBodyPart:bodyPart];
+}
+
+- (void)appendPartWithFileData:(NSData *)data
+                          name:(NSString *)name
+                      fileName:(NSString *)fileName
+                      mimeType:(NSString *)mimeType
+{
+    NSParameterAssert(name);
+    NSParameterAssert(fileName);
+    NSParameterAssert(mimeType);
+
+    NSMutableDictionary *mutableHeaders = [NSMutableDictionary dictionary];
+    [mutableHeaders setValue:[NSString stringWithFormat:@"form-data; name=\"%@\"; filename=\"%@\"", name, fileName] forKey:@"Content-Disposition"];
+    [mutableHeaders setValue:mimeType forKey:@"Content-Type"];
+
+    [self appendPartWithHeaders:mutableHeaders body:data];
+}
+
+- (void)appendPartWithFormData:(NSData *)data
+                          name:(NSString *)name
+{
+    NSParameterAssert(name);
+
+    NSMutableDictionary *mutableHeaders = [NSMutableDictionary dictionary];
+    [mutableHeaders setValue:[NSString stringWithFormat:@"form-data; name=\"%@\"", name] forKey:@"Content-Disposition"];
+
+    [self appendPartWithHeaders:mutableHeaders body:data];
+}
+
+- (void)appendPartWithHeaders:(NSDictionary *)headers
+                         body:(NSData *)body
+{
+    NSParameterAssert(body);
+
+    AFHTTPBodyPart *bodyPart = [[AFHTTPBodyPart alloc] init];
+    bodyPart.stringEncoding = self.stringEncoding;
+    bodyPart.headers = headers;
+    bodyPart.boundary = self.boundary;
+    bodyPart.bodyContentLength = [body length];
+    bodyPart.body = body;
+
+    [self.bodyStream appendHTTPBodyPart:bodyPart];
+}
+
+- (void)throttleBandwidthWithPacketSize:(NSUInteger)numberOfBytes
+                                  delay:(NSTimeInterval)delay
+{
+    self.bodyStream.numberOfBytesInPacket = numberOfBytes;
+    self.bodyStream.delay = delay;
+}
+
+- (NSMutableURLRequest *)requestByFinalizingMultipartFormData {
+    if ([self.bodyStream isEmpty]) {
+        return self.request;
+    }
+
+    // Reset the initial and final boundaries to ensure correct Content-Length
+    [self.bodyStream setInitialAndFinalBoundaries];
+    [self.request setHTTPBodyStream:self.bodyStream];
+
+    [self.request setValue:[NSString stringWithFormat:@"multipart/form-data; boundary=%@", self.boundary] forHTTPHeaderField:@"Content-Type"];
+    [self.request setValue:[NSString stringWithFormat:@"%llu", [self.bodyStream contentLength]] forHTTPHeaderField:@"Content-Length"];
+
+    return self.request;
+}
+
+@end
+
+#pragma mark -
+
+@interface NSStream ()
+@property (readwrite) NSStreamStatus streamStatus;
+@property (readwrite, copy) NSError *streamError;
+@end
+
+@interface AFMultipartBodyStream () <NSCopying>
+@property (readwrite, nonatomic, assign) NSStringEncoding stringEncoding;
+@property (readwrite, nonatomic, strong) NSMutableArray *HTTPBodyParts;
+@property (readwrite, nonatomic, strong) NSEnumerator *HTTPBodyPartEnumerator;
+@property (readwrite, nonatomic, strong) AFHTTPBodyPart *currentHTTPBodyPart;
+@property (readwrite, nonatomic, strong) NSOutputStream *outputStream;
+@property (readwrite, nonatomic, strong) NSMutableData *buffer;
+@end
+
+@implementation AFMultipartBodyStream
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wimplicit-atomic-properties"
+#if (defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 80000) || (defined(__MAC_OS_X_VERSION_MAX_ALLOWED) && __MAC_OS_X_VERSION_MAX_ALLOWED >= 1100)
+@synthesize delegate;
+#endif
+@synthesize streamStatus;
+@synthesize streamError;
+#pragma clang diagnostic pop
+
+- (id)initWithStringEncoding:(NSStringEncoding)encoding {
+    self = [super init];
+    if (!self) {
+        return nil;
+    }
+
+    self.stringEncoding = encoding;
+    self.HTTPBodyParts = [NSMutableArray array];
+    self.numberOfBytesInPacket = NSIntegerMax;
+
+    return self;
+}
+
+- (void)setInitialAndFinalBoundaries {
+    if ([self.HTTPBodyParts count] > 0) {
+        for (AFHTTPBodyPart *bodyPart in self.HTTPBodyParts) {
+            bodyPart.hasInitialBoundary = NO;
+            bodyPart.hasFinalBoundary = NO;
+        }
+
+        [[self.HTTPBodyParts firstObject] setHasInitialBoundary:YES];
+        [[self.HTTPBodyParts lastObject] setHasFinalBoundary:YES];
+    }
+}
+
+- (void)appendHTTPBodyPart:(AFHTTPBodyPart *)bodyPart {
+    [self.HTTPBodyParts addObject:bodyPart];
+}
+
+- (BOOL)isEmpty {
+    return [self.HTTPBodyParts count] == 0;
+}
+
+#pragma mark - NSInputStream
+
+- (NSInteger)read:(uint8_t *)buffer
+        maxLength:(NSUInteger)length
+{
+    if ([self streamStatus] == NSStreamStatusClosed) {
+        return 0;
+    }
+
+    NSInteger totalNumberOfBytesRead = 0;
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+    while ((NSUInteger)totalNumberOfBytesRead < MIN(length, self.numberOfBytesInPacket)) {
+        if (!self.currentHTTPBodyPart || ![self.currentHTTPBodyPart hasBytesAvailable]) {
+            if (!(self.currentHTTPBodyPart = [self.HTTPBodyPartEnumerator nextObject])) {
+                break;
+            }
+        } else {
+            NSUInteger maxLength = length - (NSUInteger)totalNumberOfBytesRead;
+            NSInteger numberOfBytesRead = [self.currentHTTPBodyPart read:&buffer[totalNumberOfBytesRead] maxLength:maxLength];
+            if (numberOfBytesRead == -1) {
+                self.streamError = self.currentHTTPBodyPart.inputStream.streamError;
+                break;
+            } else {
+                totalNumberOfBytesRead += numberOfBytesRead;
+
+                if (self.delay > 0.0f) {
+                    [NSThread sleepForTimeInterval:self.delay];
+                }
+            }
+        }
+    }
+#pragma clang diagnostic pop
+
+    return totalNumberOfBytesRead;
+}
+
+- (BOOL)getBuffer:(__unused uint8_t **)buffer
+           length:(__unused NSUInteger *)len
+{
+    return NO;
+}
+
+- (BOOL)hasBytesAvailable {
+    return [self streamStatus] == NSStreamStatusOpen;
+}
+
+#pragma mark - NSStream
+
+- (void)open {
+    if (self.streamStatus == NSStreamStatusOpen) {
+        return;
+    }
+
+    self.streamStatus = NSStreamStatusOpen;
+
+    [self setInitialAndFinalBoundaries];
+    self.HTTPBodyPartEnumerator = [self.HTTPBodyParts objectEnumerator];
+}
+
+- (void)close {
+    self.streamStatus = NSStreamStatusClosed;
+}
+
+- (id)propertyForKey:(__unused NSString *)key {
+    return nil;
+}
+
+- (BOOL)setProperty:(__unused id)property
+             forKey:(__unused NSString *)key
+{
+    return NO;
+}
+
+- (void)scheduleInRunLoop:(__unused NSRunLoop *)aRunLoop
+                  forMode:(__unused NSString *)mode
+{}
+
+- (void)removeFromRunLoop:(__unused NSRunLoop *)aRunLoop
+                  forMode:(__unused NSString *)mode
+{}
+
+- (unsigned long long)contentLength {
+    unsigned long long length = 0;
+    for (AFHTTPBodyPart *bodyPart in self.HTTPBodyParts) {
+        length += [bodyPart contentLength];
+    }
+
+    return length;
+}
+
+#pragma mark - Undocumented CFReadStream Bridged Methods
+
+- (void)_scheduleInCFRunLoop:(__unused CFRunLoopRef)aRunLoop
+                     forMode:(__unused CFStringRef)aMode
+{}
+
+- (void)_unscheduleFromCFRunLoop:(__unused CFRunLoopRef)aRunLoop
+                         forMode:(__unused CFStringRef)aMode
+{}
+
+- (BOOL)_setCFClientFlags:(__unused CFOptionFlags)inFlags
+                 callback:(__unused CFReadStreamClientCallBack)inCallback
+                  context:(__unused CFStreamClientContext *)inContext {
+    return NO;
+}
+
+#pragma mark - NSCopying
+
+-(id)copyWithZone:(NSZone *)zone {
+    AFMultipartBodyStream *bodyStreamCopy = [[[self class] allocWithZone:zone] initWithStringEncoding:self.stringEncoding];
+
+    for (AFHTTPBodyPart *bodyPart in self.HTTPBodyParts) {
+        [bodyStreamCopy appendHTTPBodyPart:[bodyPart copy]];
+    }
+
+    [bodyStreamCopy setInitialAndFinalBoundaries];
+
+    return bodyStreamCopy;
+}
+
+@end
+
+#pragma mark -
+
+typedef enum {
+    AFEncapsulationBoundaryPhase = 1,
+    AFHeaderPhase                = 2,
+    AFBodyPhase                  = 3,
+    AFFinalBoundaryPhase         = 4,
+} AFHTTPBodyPartReadPhase;
+
+@interface AFHTTPBodyPart () <NSCopying> {
+    AFHTTPBodyPartReadPhase _phase;
+    NSInputStream *_inputStream;
+    unsigned long long _phaseReadOffset;
+}
+
+- (BOOL)transitionToNextPhase;
+- (NSInteger)readData:(NSData *)data
+           intoBuffer:(uint8_t *)buffer
+            maxLength:(NSUInteger)length;
+@end
+
+@implementation AFHTTPBodyPart
+
+- (id)init {
+    self = [super init];
+    if (!self) {
+        return nil;
+    }
+
+    [self transitionToNextPhase];
+
+    return self;
+}
+
+- (void)dealloc {
+    if (_inputStream) {
+        [_inputStream close];
+        _inputStream = nil;
+    }
+}
+
+- (NSInputStream *)inputStream {
+    if (!_inputStream) {
+        if ([self.body isKindOfClass:[NSData class]]) {
+            _inputStream = [NSInputStream inputStreamWithData:self.body];
+        } else if ([self.body isKindOfClass:[NSURL class]]) {
+            _inputStream = [NSInputStream inputStreamWithURL:self.body];
+        } else if ([self.body isKindOfClass:[NSInputStream class]]) {
+            _inputStream = self.body;
+        } else {
+            _inputStream = [NSInputStream inputStreamWithData:[NSData data]];
+        }
+    }
+
+    return _inputStream;
+}
+
+- (NSString *)stringForHeaders {
+    NSMutableString *headerString = [NSMutableString string];
+    for (NSString *field in [self.headers allKeys]) {
+        [headerString appendString:[NSString stringWithFormat:@"%@: %@%@", field, [self.headers valueForKey:field], kAFMultipartFormCRLF]];
+    }
+    [headerString appendString:kAFMultipartFormCRLF];
+
+    return [NSString stringWithString:headerString];
+}
+
+- (unsigned long long)contentLength {
+    unsigned long long length = 0;
+
+    NSData *encapsulationBoundaryData = [([self hasInitialBoundary] ? AFMultipartFormInitialBoundary(self.boundary) : AFMultipartFormEncapsulationBoundary(self.boundary)) dataUsingEncoding:self.stringEncoding];
+    length += [encapsulationBoundaryData length];
+
+    NSData *headersData = [[self stringForHeaders] dataUsingEncoding:self.stringEncoding];
+    length += [headersData length];
+
+    length += _bodyContentLength;
+
+    NSData *closingBoundaryData = ([self hasFinalBoundary] ? [AFMultipartFormFinalBoundary(self.boundary) dataUsingEncoding:self.stringEncoding] : [NSData data]);
+    length += [closingBoundaryData length];
+
+    return length;
+}
+
+- (BOOL)hasBytesAvailable {
+    // Allows `read:maxLength:` to be called again if `AFMultipartFormFinalBoundary` doesn't fit into the available buffer
+    if (_phase == AFFinalBoundaryPhase) {
+        return YES;
+    }
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wcovered-switch-default"
+    switch (self.inputStream.streamStatus) {
+        case NSStreamStatusNotOpen:
+        case NSStreamStatusOpening:
+        case NSStreamStatusOpen:
+        case NSStreamStatusReading:
+        case NSStreamStatusWriting:
+            return YES;
+        case NSStreamStatusAtEnd:
+        case NSStreamStatusClosed:
+        case NSStreamStatusError:
+        default:
+            return NO;
+    }
+#pragma clang diagnostic pop
+}
+
+- (NSInteger)read:(uint8_t *)buffer
+        maxLength:(NSUInteger)length
+{
+    NSInteger totalNumberOfBytesRead = 0;
+
+    if (_phase == AFEncapsulationBoundaryPhase) {
+        NSData *encapsulationBoundaryData = [([self hasInitialBoundary] ? AFMultipartFormInitialBoundary(self.boundary) : AFMultipartFormEncapsulationBoundary(self.boundary)) dataUsingEncoding:self.stringEncoding];
+        totalNumberOfBytesRead += [self readData:encapsulationBoundaryData intoBuffer:&buffer[totalNumberOfBytesRead] maxLength:(length - (NSUInteger)totalNumberOfBytesRead)];
+    }
+
+    if (_phase == AFHeaderPhase) {
+        NSData *headersData = [[self stringForHeaders] dataUsingEncoding:self.stringEncoding];
+        totalNumberOfBytesRead += [self readData:headersData intoBuffer:&buffer[totalNumberOfBytesRead] maxLength:(length - (NSUInteger)totalNumberOfBytesRead)];
+    }
+
+    if (_phase == AFBodyPhase) {
+        NSInteger numberOfBytesRead = 0;
+
+        numberOfBytesRead = [self.inputStream read:&buffer[totalNumberOfBytesRead] maxLength:(length - (NSUInteger)totalNumberOfBytesRead)];
+        if (numberOfBytesRead == -1) {
+            return -1;
+        } else {
+            totalNumberOfBytesRead += numberOfBytesRead;
+
+            if ([self.inputStream streamStatus] >= NSStreamStatusAtEnd) {
+                [self transitionToNextPhase];
+            }
+        }
+    }
+
+    if (_phase == AFFinalBoundaryPhase) {
+        NSData *closingBoundaryData = ([self hasFinalBoundary] ? [AFMultipartFormFinalBoundary(self.boundary) dataUsingEncoding:self.stringEncoding] : [NSData data]);
+        totalNumberOfBytesRead += [self readData:closingBoundaryData intoBuffer:&buffer[totalNumberOfBytesRead] maxLength:(length - (NSUInteger)totalNumberOfBytesRead)];
+    }
+
+    return totalNumberOfBytesRead;
+}
+
+- (NSInteger)readData:(NSData *)data
+           intoBuffer:(uint8_t *)buffer
+            maxLength:(NSUInteger)length
+{
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+    NSRange range = NSMakeRange((NSUInteger)_phaseReadOffset, MIN([data length] - ((NSUInteger)_phaseReadOffset), length));
+    [data getBytes:buffer range:range];
+#pragma clang diagnostic pop
+
+    _phaseReadOffset += range.length;
+
+    if (((NSUInteger)_phaseReadOffset) >= [data length]) {
+        [self transitionToNextPhase];
+    }
+
+    return (NSInteger)range.length;
+}
+
+- (BOOL)transitionToNextPhase {
+    if (![[NSThread currentThread] isMainThread]) {
+        dispatch_sync(dispatch_get_main_queue(), ^{
+            [self transitionToNextPhase];
+        });
+        return YES;
+    }
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wcovered-switch-default"
+    switch (_phase) {
+        case AFEncapsulationBoundaryPhase:
+            _phase = AFHeaderPhase;
+            break;
+        case AFHeaderPhase:
+            [self.inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSRunLoopCommonModes];
+            [self.inputStream open];
+            _phase = AFBodyPhase;
+            break;
+        case AFBodyPhase:
+            [self.inputStream close];
+            _phase = AFFinalBoundaryPhase;
+            break;
+        case AFFinalBoundaryPhase:
+        default:
+            _phase = AFEncapsulationBoundaryPhase;
+            break;
+    }
+    _phaseReadOffset = 0;
+#pragma clang diagnostic pop
+
+    return YES;
+}
+
+#pragma mark - NSCopying
+
+- (id)copyWithZone:(NSZone *)zone {
+    AFHTTPBodyPart *bodyPart = [[[self class] allocWithZone:zone] init];
+
+    bodyPart.stringEncoding = self.stringEncoding;
+    bodyPart.headers = self.headers;
+    bodyPart.bodyContentLength = self.bodyContentLength;
+    bodyPart.body = self.body;
+    bodyPart.boundary = self.boundary;
+
+    return bodyPart;
+}
+
+@end
+
+#pragma mark -
+
+@implementation AFJSONRequestSerializer
+
++ (instancetype)serializer {
+    return [self serializerWithWritingOptions:(NSJSONWritingOptions)0];
+}
+
++ (instancetype)serializerWithWritingOptions:(NSJSONWritingOptions)writingOptions
+{
+    AFJSONRequestSerializer *serializer = [[self alloc] init];
+    serializer.writingOptions = writingOptions;
+
+    return serializer;
+}
+
+#pragma mark - AFURLRequestSerialization
+
+- (NSURLRequest *)requestBySerializingRequest:(NSURLRequest *)request
+                               withParameters:(id)parameters
+                                        error:(NSError *__autoreleasing *)error
+{
+    NSParameterAssert(request);
+
+    if ([self.HTTPMethodsEncodingParametersInURI containsObject:[[request HTTPMethod] uppercaseString]]) {
+        return [super requestBySerializingRequest:request withParameters:parameters error:error];
+    }
+
+    NSMutableURLRequest *mutableRequest = [request mutableCopy];
+
+    [self.HTTPRequestHeaders enumerateKeysAndObjectsUsingBlock:^(id field, id value, BOOL * __unused stop) {
+        if (![request valueForHTTPHeaderField:field]) {
+            [mutableRequest setValue:value forHTTPHeaderField:field];
+        }
+    }];
+
+    if (parameters) {
+        if (![mutableRequest valueForHTTPHeaderField:@"Content-Type"]) {
+            [mutableRequest setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
+        }
+
+        [mutableRequest setHTTPBody:[NSJSONSerialization dataWithJSONObject:parameters options:self.writingOptions error:error]];
+    }
+
+    return mutableRequest;
+}
+
+#pragma mark - NSSecureCoding
+
+- (id)initWithCoder:(NSCoder *)decoder {
+    self = [super initWithCoder:decoder];
+    if (!self) {
+        return nil;
+    }
+
+    self.writingOptions = [[decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(writingOptions))] unsignedIntegerValue];
+
+    return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+    [super encodeWithCoder:coder];
+
+    [coder encodeInteger:self.writingOptions forKey:NSStringFromSelector(@selector(writingOptions))];
+}
+
+#pragma mark - NSCopying
+
+- (id)copyWithZone:(NSZone *)zone {
+    AFJSONRequestSerializer *serializer = [super copyWithZone:zone];
+    serializer.writingOptions = self.writingOptions;
+
+    return serializer;
+}
+
+@end
+
+#pragma mark -
+
+@implementation AFPropertyListRequestSerializer
+
++ (instancetype)serializer {
+    return [self serializerWithFormat:NSPropertyListXMLFormat_v1_0 writeOptions:0];
+}
+
++ (instancetype)serializerWithFormat:(NSPropertyListFormat)format
+                        writeOptions:(NSPropertyListWriteOptions)writeOptions
+{
+    AFPropertyListRequestSerializer *serializer = [[self alloc] init];
+    serializer.format = format;
+    serializer.writeOptions = writeOptions;
+
+    return serializer;
+}
+
+#pragma mark - AFURLRequestSerializer
+
+- (NSURLRequest *)requestBySerializingRequest:(NSURLRequest *)request
+                               withParameters:(id)parameters
+                                        error:(NSError *__autoreleasing *)error
+{
+    NSParameterAssert(request);
+
+    if ([self.HTTPMethodsEncodingParametersInURI containsObject:[[request HTTPMethod] uppercaseString]]) {
+        return [super requestBySerializingRequest:request withParameters:parameters error:error];
+    }
+
+    NSMutableURLRequest *mutableRequest = [request mutableCopy];
+
+    [self.HTTPRequestHeaders enumerateKeysAndObjectsUsingBlock:^(id field, id value, BOOL * __unused stop) {
+        if (![request valueForHTTPHeaderField:field]) {
+            [mutableRequest setValue:value forHTTPHeaderField:field];
+        }
+    }];
+
+    if (parameters) {
+        if (![mutableRequest valueForHTTPHeaderField:@"Content-Type"]) {
+            [mutableRequest setValue:@"application/x-plist" forHTTPHeaderField:@"Content-Type"];
+        }
+
+        [mutableRequest setHTTPBody:[NSPropertyListSerialization dataWithPropertyList:parameters format:self.format options:self.writeOptions error:error]];
+    }
+
+    return mutableRequest;
+}
+
+#pragma mark - NSSecureCoding
+
+- (id)initWithCoder:(NSCoder *)decoder {
+    self = [super initWithCoder:decoder];
+    if (!self) {
+        return nil;
+    }
+
+    self.format = (NSPropertyListFormat)[[decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(format))] unsignedIntegerValue];
+    self.writeOptions = [[decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(writeOptions))] unsignedIntegerValue];
+
+    return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+    [super encodeWithCoder:coder];
+
+    [coder encodeInteger:self.format forKey:NSStringFromSelector(@selector(format))];
+    [coder encodeObject:@(self.writeOptions) forKey:NSStringFromSelector(@selector(writeOptions))];
+}
+
+#pragma mark - NSCopying
+
+- (id)copyWithZone:(NSZone *)zone {
+    AFPropertyListRequestSerializer *serializer = [super copyWithZone:zone];
+    serializer.format = self.format;
+    serializer.writeOptions = self.writeOptions;
+
+    return serializer;
+}
+
+@end

Example/Pods/AFNetworking/AFNetworking/AFURLResponseSerialization.h

+// AFURLResponseSerialization.h
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+#import <CoreGraphics/CoreGraphics.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ The `AFURLResponseSerialization` protocol is adopted by an object that decodes data into a more useful object representation, according to details in the server response. Response serializers may additionally perform validation on the incoming response and data.
+
+ For example, a JSON response serializer may check for an acceptable status code (`2XX` range) and content type (`application/json`), decoding a valid JSON response into an object.
+ */
+@protocol AFURLResponseSerialization <NSObject, NSSecureCoding, NSCopying>
+
+/**
+ The response object decoded from the data associated with a specified response.
+
+ @param response The response to be processed.
+ @param data The response data to be decoded.
+ @param error The error that occurred while attempting to decode the response data.
+
+ @return The object decoded from the specified response data.
+ */
+- (nullable id)responseObjectForResponse:(nullable NSURLResponse *)response
+                           data:(nullable NSData *)data
+                          error:(NSError * __nullable __autoreleasing *)error
+#ifdef NS_SWIFT_NOTHROW
+NS_SWIFT_NOTHROW
+#endif
+;
+
+@end
+
+#pragma mark -
+
+/**
+ `AFHTTPResponseSerializer` conforms to the `AFURLRequestSerialization` & `AFURLResponseSerialization` protocols, offering a concrete base implementation of query string / URL form-encoded parameter serialization and default request headers, as well as response status code and content type validation.
+
+ Any request or response serializer dealing with HTTP is encouraged to subclass `AFHTTPResponseSerializer` in order to ensure consistent default behavior.
+ */
+@interface AFHTTPResponseSerializer : NSObject <AFURLResponseSerialization>
+
+- (instancetype)init;
+
+/**
+ The string encoding used to serialize data received from the server, when no string encoding is specified by the response. `NSUTF8StringEncoding` by default.
+ */
+@property (nonatomic, assign) NSStringEncoding stringEncoding;
+
+/**
+ Creates and returns a serializer with default configuration.
+ */
++ (instancetype)serializer;
+
+///-----------------------------------------
+/// @name Configuring Response Serialization
+///-----------------------------------------
+
+/**
+ The acceptable HTTP status codes for responses. When non-`nil`, responses with status codes not contained by the set will result in an error during validation.
+
+ See http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
+ */
+@property (nonatomic, copy, nullable) NSIndexSet *acceptableStatusCodes;
+
+/**
+ The acceptable MIME types for responses. When non-`nil`, responses with a `Content-Type` with MIME types that do not intersect with the set will result in an error during validation.
+ */
+@property (nonatomic, copy, nullable) NSSet *acceptableContentTypes;
+
+/**
+ Validates the specified response and data.
+
+ In its base implementation, this method checks for an acceptable status code and content type. Subclasses may wish to add other domain-specific checks.
+
+ @param response The response to be validated.
+ @param data The data associated with the response.
+ @param error The error that occurred while attempting to validate the response.
+
+ @return `YES` if the response is valid, otherwise `NO`.
+ */
+- (BOOL)validateResponse:(nullable NSHTTPURLResponse *)response
+                    data:(nullable NSData *)data
+                   error:(NSError * __nullable __autoreleasing *)error;
+
+@end
+
+#pragma mark -
+
+
+/**
+ `AFJSONResponseSerializer` is a subclass of `AFHTTPResponseSerializer` that validates and decodes JSON responses.
+
+ By default, `AFJSONResponseSerializer` accepts the following MIME types, which includes the official standard, `application/json`, as well as other commonly-used types:
+
+ - `application/json`
+ - `text/json`
+ - `text/javascript`
+ */
+@interface AFJSONResponseSerializer : AFHTTPResponseSerializer
+
+- (instancetype)init;
+
+/**
+ Options for reading the response JSON data and creating the Foundation objects. For possible values, see the `NSJSONSerialization` documentation section "NSJSONReadingOptions". `0` by default.
+ */
+@property (nonatomic, assign) NSJSONReadingOptions readingOptions;
+
+/**
+ Whether to remove keys with `NSNull` values from response JSON. Defaults to `NO`.
+ */
+@property (nonatomic, assign) BOOL removesKeysWithNullValues;
+
+/**
+ Creates and returns a JSON serializer with specified reading and writing options.
+
+ @param readingOptions The specified JSON reading options.
+ */
++ (instancetype)serializerWithReadingOptions:(NSJSONReadingOptions)readingOptions;
+
+@end
+
+#pragma mark -
+
+/**
+ `AFXMLParserResponseSerializer` is a subclass of `AFHTTPResponseSerializer` that validates and decodes XML responses as an `NSXMLParser` objects.
+
+ By default, `AFXMLParserResponseSerializer` accepts the following MIME types, which includes the official standard, `application/xml`, as well as other commonly-used types:
+
+ - `application/xml`
+ - `text/xml`
+ */
+@interface AFXMLParserResponseSerializer : AFHTTPResponseSerializer
+
+@end
+
+#pragma mark -
+
+#ifdef __MAC_OS_X_VERSION_MIN_REQUIRED
+
+/**
+ `AFXMLDocumentResponseSerializer` is a subclass of `AFHTTPResponseSerializer` that validates and decodes XML responses as an `NSXMLDocument` objects.
+
+ By default, `AFXMLDocumentResponseSerializer` accepts the following MIME types, which includes the official standard, `application/xml`, as well as other commonly-used types:
+
+ - `application/xml`
+ - `text/xml`
+ */
+@interface AFXMLDocumentResponseSerializer : AFHTTPResponseSerializer
+
+- (instancetype)init;
+
+/**
+ Input and output options specifically intended for `NSXMLDocument` objects. For possible values, see the `NSJSONSerialization` documentation section "NSJSONReadingOptions". `0` by default.
+ */
+@property (nonatomic, assign) NSUInteger options;
+
+/**
+ Creates and returns an XML document serializer with the specified options.
+
+ @param mask The XML document options.
+ */
++ (instancetype)serializerWithXMLDocumentOptions:(NSUInteger)mask;
+
+@end
+
+#endif
+
+#pragma mark -
+
+/**
+ `AFPropertyListResponseSerializer` is a subclass of `AFHTTPResponseSerializer` that validates and decodes XML responses as an `NSXMLDocument` objects.
+
+ By default, `AFPropertyListResponseSerializer` accepts the following MIME types:
+
+ - `application/x-plist`
+ */
+@interface AFPropertyListResponseSerializer : AFHTTPResponseSerializer
+
+- (instancetype)init;
+
+/**
+ The property list format. Possible values are described in "NSPropertyListFormat".
+ */
+@property (nonatomic, assign) NSPropertyListFormat format;
+
+/**
+ The property list reading options. Possible values are described in "NSPropertyListMutabilityOptions."
+ */
+@property (nonatomic, assign) NSPropertyListReadOptions readOptions;
+
+/**
+ Creates and returns a property list serializer with a specified format, read options, and write options.
+
+ @param format The property list format.
+ @param readOptions The property list reading options.
+ */
++ (instancetype)serializerWithFormat:(NSPropertyListFormat)format
+                         readOptions:(NSPropertyListReadOptions)readOptions;
+
+@end
+
+#pragma mark -
+
+/**
+ `AFImageResponseSerializer` is a subclass of `AFHTTPResponseSerializer` that validates and decodes image responses.
+
+ By default, `AFImageResponseSerializer` accepts the following MIME types, which correspond to the image formats supported by UIImage or NSImage:
+
+ - `image/tiff`
+ - `image/jpeg`
+ - `image/gif`
+ - `image/png`
+ - `image/ico`
+ - `image/x-icon`
+ - `image/bmp`
+ - `image/x-bmp`
+ - `image/x-xbitmap`
+ - `image/x-win-bitmap`
+ */
+@interface AFImageResponseSerializer : AFHTTPResponseSerializer
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+/**
+ The scale factor used when interpreting the image data to construct `responseImage`. Specifying a scale factor of 1.0 results in an image whose size matches the pixel-based dimensions of the image. Applying a different scale factor changes the size of the image as reported by the size property. This is set to the value of scale of the main screen by default, which automatically scales images for retina displays, for instance.
+ */
+@property (nonatomic, assign) CGFloat imageScale;
+
+/**
+ Whether to automatically inflate response image data for compressed formats (such as PNG or JPEG). Enabling this can significantly improve drawing performance on iOS when used with `setCompletionBlockWithSuccess:failure:`, as it allows a bitmap representation to be constructed in the background rather than on the main thread. `YES` by default.
+ */
+@property (nonatomic, assign) BOOL automaticallyInflatesResponseImage;
+#endif
+
+@end
+
+#pragma mark -
+
+/**
+ `AFCompoundSerializer` is a subclass of `AFHTTPResponseSerializer` that delegates the response serialization to the first `AFHTTPResponseSerializer` object that returns an object for `responseObjectForResponse:data:error:`, falling back on the default behavior of `AFHTTPResponseSerializer`. This is useful for supporting multiple potential types and structures of server responses with a single serializer.
+ */
+@interface AFCompoundResponseSerializer : AFHTTPResponseSerializer
+
+/**
+ The component response serializers.
+ */
+@property (readonly, nonatomic, copy) NSArray *responseSerializers;
+
+/**
+ Creates and returns a compound serializer comprised of the specified response serializers.
+
+ @warning Each response serializer specified must be a subclass of `AFHTTPResponseSerializer`, and response to `-validateResponse:data:error:`.
+ */
++ (instancetype)compoundSerializerWithResponseSerializers:(NSArray *)responseSerializers;
+
+@end
+
+///----------------
+/// @name Constants
+///----------------
+
+/**
+ ## Error Domains
+
+ The following error domain is predefined.
+
+ - `NSString * const AFURLResponseSerializationErrorDomain`
+
+ ### Constants
+
+ `AFURLResponseSerializationErrorDomain`
+ AFURLResponseSerializer errors. Error codes for `AFURLResponseSerializationErrorDomain` correspond to codes in `NSURLErrorDomain`.
+ */
+FOUNDATION_EXPORT NSString * const AFURLResponseSerializationErrorDomain;
+
+/**
+ ## User info dictionary keys
+
+ These keys may exist in the user info dictionary, in addition to those defined for NSError.
+
+ - `NSString * const AFNetworkingOperationFailingURLResponseErrorKey`
+ - `NSString * const AFNetworkingOperationFailingURLResponseDataErrorKey`
+
+ ### Constants
+
+ `AFNetworkingOperationFailingURLResponseErrorKey`
+ The corresponding value is an `NSURLResponse` containing the response of the operation associated with an error. This key is only present in the `AFURLResponseSerializationErrorDomain`.
+
+ `AFNetworkingOperationFailingURLResponseDataErrorKey`
+ The corresponding value is an `NSData` containing the original data of the operation associated with an error. This key is only present in the `AFURLResponseSerializationErrorDomain`.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingOperationFailingURLResponseErrorKey;
+
+FOUNDATION_EXPORT NSString * const AFNetworkingOperationFailingURLResponseDataErrorKey;
+
+NS_ASSUME_NONNULL_END

Example/Pods/AFNetworking/AFNetworking/AFURLResponseSerialization.m

+// AFURLResponseSerialization.m
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "AFURLResponseSerialization.h"
+
+#if TARGET_OS_IOS
+#import <UIKit/UIKit.h>
+#elif TARGET_OS_WATCH
+#import <WatchKit/WatchKit.h>
+#elif defined(__MAC_OS_X_VERSION_MIN_REQUIRED)
+#import <Cocoa/Cocoa.h>
+#endif
+
+NSString * const AFURLResponseSerializationErrorDomain = @"com.alamofire.error.serialization.response";
+NSString * const AFNetworkingOperationFailingURLResponseErrorKey = @"com.alamofire.serialization.response.error.response";
+NSString * const AFNetworkingOperationFailingURLResponseDataErrorKey = @"com.alamofire.serialization.response.error.data";
+
+static NSError * AFErrorWithUnderlyingError(NSError *error, NSError *underlyingError) {
+    if (!error) {
+        return underlyingError;
+    }
+
+    if (!underlyingError || error.userInfo[NSUnderlyingErrorKey]) {
+        return error;
+    }
+
+    NSMutableDictionary *mutableUserInfo = [error.userInfo mutableCopy];
+    mutableUserInfo[NSUnderlyingErrorKey] = underlyingError;
+
+    return [[NSError alloc] initWithDomain:error.domain code:error.code userInfo:mutableUserInfo];
+}
+
+static BOOL AFErrorOrUnderlyingErrorHasCodeInDomain(NSError *error, NSInteger code, NSString *domain) {
+    if ([error.domain isEqualToString:domain] && error.code == code) {
+        return YES;
+    } else if (error.userInfo[NSUnderlyingErrorKey]) {
+        return AFErrorOrUnderlyingErrorHasCodeInDomain(error.userInfo[NSUnderlyingErrorKey], code, domain);
+    }
+
+    return NO;
+}
+
+static id AFJSONObjectByRemovingKeysWithNullValues(id JSONObject, NSJSONReadingOptions readingOptions) {
+    if ([JSONObject isKindOfClass:[NSArray class]]) {
+        NSMutableArray *mutableArray = [NSMutableArray arrayWithCapacity:[(NSArray *)JSONObject count]];
+        for (id value in (NSArray *)JSONObject) {
+            [mutableArray addObject:AFJSONObjectByRemovingKeysWithNullValues(value, readingOptions)];
+        }
+
+        return (readingOptions & NSJSONReadingMutableContainers) ? mutableArray : [NSArray arrayWithArray:mutableArray];
+    } else if ([JSONObject isKindOfClass:[NSDictionary class]]) {
+        NSMutableDictionary *mutableDictionary = [NSMutableDictionary dictionaryWithDictionary:JSONObject];
+        for (id <NSCopying> key in [(NSDictionary *)JSONObject allKeys]) {
+            id value = (NSDictionary *)JSONObject[key];
+            if (!value || [value isEqual:[NSNull null]]) {
+                [mutableDictionary removeObjectForKey:key];
+            } else if ([value isKindOfClass:[NSArray class]] || [value isKindOfClass:[NSDictionary class]]) {
+                mutableDictionary[key] = AFJSONObjectByRemovingKeysWithNullValues(value, readingOptions);
+            }
+        }
+
+        return (readingOptions & NSJSONReadingMutableContainers) ? mutableDictionary : [NSDictionary dictionaryWithDictionary:mutableDictionary];
+    }
+
+    return JSONObject;
+}
+
+@implementation AFHTTPResponseSerializer
+
++ (instancetype)serializer {
+    return [[self alloc] init];
+}
+
+- (instancetype)init {
+    self = [super init];
+    if (!self) {
+        return nil;
+    }
+
+    self.stringEncoding = NSUTF8StringEncoding;
+
+    self.acceptableStatusCodes = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange(200, 100)];
+    self.acceptableContentTypes = nil;
+
+    return self;
+}
+
+#pragma mark -
+
+- (BOOL)validateResponse:(NSHTTPURLResponse *)response
+                    data:(NSData *)data
+                   error:(NSError * __autoreleasing *)error
+{
+    BOOL responseIsValid = YES;
+    NSError *validationError = nil;
+
+    if (response && [response isKindOfClass:[NSHTTPURLResponse class]]) {
+        if (self.acceptableContentTypes && ![self.acceptableContentTypes containsObject:[response MIMEType]]) {
+            if ([data length] > 0 && [response URL]) {
+                NSMutableDictionary *mutableUserInfo = [@{
+                                                          NSLocalizedDescriptionKey: [NSString stringWithFormat:NSLocalizedStringFromTable(@"Request failed: unacceptable content-type: %@", @"AFNetworking", nil), [response MIMEType]],
+                                                          NSURLErrorFailingURLErrorKey:[response URL],
+                                                          AFNetworkingOperationFailingURLResponseErrorKey: response,
+                                                        } mutableCopy];
+                if (data) {
+                    mutableUserInfo[AFNetworkingOperationFailingURLResponseDataErrorKey] = data;
+                }
+
+                validationError = AFErrorWithUnderlyingError([NSError errorWithDomain:AFURLResponseSerializationErrorDomain code:NSURLErrorCannotDecodeContentData userInfo:mutableUserInfo], validationError);
+            }
+
+            responseIsValid = NO;
+        }
+
+        if (self.acceptableStatusCodes && ![self.acceptableStatusCodes containsIndex:(NSUInteger)response.statusCode] && [response URL]) {
+            NSMutableDictionary *mutableUserInfo = [@{
+                                               NSLocalizedDescriptionKey: [NSString stringWithFormat:NSLocalizedStringFromTable(@"Request failed: %@ (%ld)", @"AFNetworking", nil), [NSHTTPURLResponse localizedStringForStatusCode:response.statusCode], (long)response.statusCode],
+                                               NSURLErrorFailingURLErrorKey:[response URL],
+                                               AFNetworkingOperationFailingURLResponseErrorKey: response,
+                                       } mutableCopy];
+
+            if (data) {
+                mutableUserInfo[AFNetworkingOperationFailingURLResponseDataErrorKey] = data;
+            }
+
+            validationError = AFErrorWithUnderlyingError([NSError errorWithDomain:AFURLResponseSerializationErrorDomain code:NSURLErrorBadServerResponse userInfo:mutableUserInfo], validationError);
+
+            responseIsValid = NO;
+        }
+    }
+
+    if (error && !responseIsValid) {
+        *error = validationError;
+    }
+
+    return responseIsValid;
+}
+
+#pragma mark - AFURLResponseSerialization
+
+- (id)responseObjectForResponse:(NSURLResponse *)response
+                           data:(NSData *)data
+                          error:(NSError *__autoreleasing *)error
+{
+    [self validateResponse:(NSHTTPURLResponse *)response data:data error:error];
+
+    return data;
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+    return YES;
+}
+
+- (id)initWithCoder:(NSCoder *)decoder {
+    self = [self init];
+    if (!self) {
+        return nil;
+    }
+
+    self.acceptableStatusCodes = [decoder decodeObjectOfClass:[NSIndexSet class] forKey:NSStringFromSelector(@selector(acceptableStatusCodes))];
+    self.acceptableContentTypes = [decoder decodeObjectOfClass:[NSIndexSet class] forKey:NSStringFromSelector(@selector(acceptableContentTypes))];
+
+    return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+    [coder encodeObject:self.acceptableStatusCodes forKey:NSStringFromSelector(@selector(acceptableStatusCodes))];
+    [coder encodeObject:self.acceptableContentTypes forKey:NSStringFromSelector(@selector(acceptableContentTypes))];
+}
+
+#pragma mark - NSCopying
+
+- (id)copyWithZone:(NSZone *)zone {
+    AFHTTPResponseSerializer *serializer = [[[self class] allocWithZone:zone] init];
+    serializer.acceptableStatusCodes = [self.acceptableStatusCodes copyWithZone:zone];
+    serializer.acceptableContentTypes = [self.acceptableContentTypes copyWithZone:zone];
+
+    return serializer;
+}
+
+@end
+
+#pragma mark -
+
+@implementation AFJSONResponseSerializer
+
++ (instancetype)serializer {
+    return [self serializerWithReadingOptions:(NSJSONReadingOptions)0];
+}
+
++ (instancetype)serializerWithReadingOptions:(NSJSONReadingOptions)readingOptions {
+    AFJSONResponseSerializer *serializer = [[self alloc] init];
+    serializer.readingOptions = readingOptions;
+
+    return serializer;
+}
+
+- (instancetype)init {
+    self = [super init];
+    if (!self) {
+        return nil;
+    }
+
+    self.acceptableContentTypes = [NSSet setWithObjects:@"application/json", @"text/json", @"text/javascript", nil];
+
+    return self;
+}
+
+#pragma mark - AFURLResponseSerialization
+
+- (id)responseObjectForResponse:(NSURLResponse *)response
+                           data:(NSData *)data
+                          error:(NSError *__autoreleasing *)error
+{
+    if (![self validateResponse:(NSHTTPURLResponse *)response data:data error:error]) {
+        if (!error || AFErrorOrUnderlyingErrorHasCodeInDomain(*error, NSURLErrorCannotDecodeContentData, AFURLResponseSerializationErrorDomain)) {
+            return nil;
+        }
+    }
+
+    // Workaround for behavior of Rails to return a single space for `head :ok` (a workaround for a bug in Safari), which is not interpreted as valid input by NSJSONSerialization.
+    // See https://github.com/rails/rails/issues/1742
+    NSStringEncoding stringEncoding = self.stringEncoding;
+    if (response.textEncodingName) {
+        CFStringEncoding encoding = CFStringConvertIANACharSetNameToEncoding((CFStringRef)response.textEncodingName);
+        if (encoding != kCFStringEncodingInvalidId) {
+            stringEncoding = CFStringConvertEncodingToNSStringEncoding(encoding);
+        }
+    }
+
+    id responseObject = nil;
+    NSError *serializationError = nil;
+    @autoreleasepool {
+        NSString *responseString = [[NSString alloc] initWithData:data encoding:stringEncoding];
+        if (responseString && ![responseString isEqualToString:@" "]) {
+            // Workaround for a bug in NSJSONSerialization when Unicode character escape codes are used instead of the actual character
+            // See http://stackoverflow.com/a/12843465/157142
+            data = [responseString dataUsingEncoding:NSUTF8StringEncoding];
+
+            if (data) {
+                if ([data length] > 0) {
+                    responseObject = [NSJSONSerialization JSONObjectWithData:data options:self.readingOptions error:&serializationError];
+                } else {
+                    return nil;
+                }
+            } else {
+                NSDictionary *userInfo = @{
+                                           NSLocalizedDescriptionKey: NSLocalizedStringFromTable(@"Data failed decoding as a UTF-8 string", @"AFNetworking", nil),
+                                           NSLocalizedFailureReasonErrorKey: [NSString stringWithFormat:NSLocalizedStringFromTable(@"Could not decode string: %@", @"AFNetworking", nil), responseString]
+                                           };
+
+                serializationError = [NSError errorWithDomain:AFURLResponseSerializationErrorDomain code:NSURLErrorCannotDecodeContentData userInfo:userInfo];
+            }
+        }
+    }
+
+    if (self.removesKeysWithNullValues && responseObject) {
+        responseObject = AFJSONObjectByRemovingKeysWithNullValues(responseObject, self.readingOptions);
+    }
+
+    if (error) {
+        *error = AFErrorWithUnderlyingError(serializationError, *error);
+    }
+
+    return responseObject;
+}
+
+#pragma mark - NSSecureCoding
+
+- (id)initWithCoder:(NSCoder *)decoder {
+    self = [super initWithCoder:decoder];
+    if (!self) {
+        return nil;
+    }
+
+    self.readingOptions = [[decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(readingOptions))] unsignedIntegerValue];
+    self.removesKeysWithNullValues = [[decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(removesKeysWithNullValues))] boolValue];
+
+    return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+    [super encodeWithCoder:coder];
+
+    [coder encodeObject:@(self.readingOptions) forKey:NSStringFromSelector(@selector(readingOptions))];
+    [coder encodeObject:@(self.removesKeysWithNullValues) forKey:NSStringFromSelector(@selector(removesKeysWithNullValues))];
+}
+
+#pragma mark - NSCopying
+
+- (id)copyWithZone:(NSZone *)zone {
+    AFJSONResponseSerializer *serializer = [[[self class] allocWithZone:zone] init];
+    serializer.readingOptions = self.readingOptions;
+    serializer.removesKeysWithNullValues = self.removesKeysWithNullValues;
+
+    return serializer;
+}
+
+@end
+
+#pragma mark -
+
+@implementation AFXMLParserResponseSerializer
+
++ (instancetype)serializer {
+    AFXMLParserResponseSerializer *serializer = [[self alloc] init];
+
+    return serializer;
+}
+
+- (instancetype)init {
+    self = [super init];
+    if (!self) {
+        return nil;
+    }
+
+    self.acceptableContentTypes = [[NSSet alloc] initWithObjects:@"application/xml", @"text/xml", nil];
+
+    return self;
+}
+
+#pragma mark - AFURLResponseSerialization
+
+- (id)responseObjectForResponse:(NSHTTPURLResponse *)response
+                           data:(NSData *)data
+                          error:(NSError *__autoreleasing *)error
+{
+    if (![self validateResponse:(NSHTTPURLResponse *)response data:data error:error]) {
+        if (!error || AFErrorOrUnderlyingErrorHasCodeInDomain(*error, NSURLErrorCannotDecodeContentData, AFURLResponseSerializationErrorDomain)) {
+            return nil;
+        }
+    }
+
+    return [[NSXMLParser alloc] initWithData:data];
+}
+
+@end
+
+#pragma mark -
+
+#ifdef __MAC_OS_X_VERSION_MIN_REQUIRED
+
+@implementation AFXMLDocumentResponseSerializer
+
++ (instancetype)serializer {
+    return [self serializerWithXMLDocumentOptions:0];
+}
+
++ (instancetype)serializerWithXMLDocumentOptions:(NSUInteger)mask {
+    AFXMLDocumentResponseSerializer *serializer = [[self alloc] init];
+    serializer.options = mask;
+
+    return serializer;
+}
+
+- (instancetype)init {
+    self = [super init];
+    if (!self) {
+        return nil;
+    }
+
+    self.acceptableContentTypes = [[NSSet alloc] initWithObjects:@"application/xml", @"text/xml", nil];
+
+    return self;
+}
+
+#pragma mark - AFURLResponseSerialization
+
+- (id)responseObjectForResponse:(NSURLResponse *)response
+                           data:(NSData *)data
+                          error:(NSError *__autoreleasing *)error
+{
+    if (![self validateResponse:(NSHTTPURLResponse *)response data:data error:error]) {
+        if (!error || AFErrorOrUnderlyingErrorHasCodeInDomain(*error, NSURLErrorCannotDecodeContentData, AFURLResponseSerializationErrorDomain)) {
+            return nil;
+        }
+    }
+
+    NSError *serializationError = nil;
+    NSXMLDocument *document = [[NSXMLDocument alloc] initWithData:data options:self.options error:&serializationError];
+
+    if (error) {
+        *error = AFErrorWithUnderlyingError(serializationError, *error);
+    }
+
+    return document;
+}
+
+#pragma mark - NSSecureCoding
+
+- (id)initWithCoder:(NSCoder *)decoder {
+    self = [super initWithCoder:decoder];
+    if (!self) {
+        return nil;
+    }
+
+    self.options = [[decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(options))] unsignedIntegerValue];
+
+    return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+    [super encodeWithCoder:coder];
+
+    [coder encodeObject:@(self.options) forKey:NSStringFromSelector(@selector(options))];
+}
+
+#pragma mark - NSCopying
+
+- (id)copyWithZone:(NSZone *)zone {
+    AFXMLDocumentResponseSerializer *serializer = [[[self class] allocWithZone:zone] init];
+    serializer.options = self.options;
+
+    return serializer;
+}
+
+@end
+
+#endif
+
+#pragma mark -
+
+@implementation AFPropertyListResponseSerializer
+
++ (instancetype)serializer {
+    return [self serializerWithFormat:NSPropertyListXMLFormat_v1_0 readOptions:0];
+}
+
++ (instancetype)serializerWithFormat:(NSPropertyListFormat)format
+                         readOptions:(NSPropertyListReadOptions)readOptions
+{
+    AFPropertyListResponseSerializer *serializer = [[self alloc] init];
+    serializer.format = format;
+    serializer.readOptions = readOptions;
+
+    return serializer;
+}
+
+- (instancetype)init {
+    self = [super init];
+    if (!self) {
+        return nil;
+    }
+
+    self.acceptableContentTypes = [[NSSet alloc] initWithObjects:@"application/x-plist", nil];
+
+    return self;
+}
+
+#pragma mark - AFURLResponseSerialization
+
+- (id)responseObjectForResponse:(NSURLResponse *)response
+                           data:(NSData *)data
+                          error:(NSError *__autoreleasing *)error
+{
+    if (![self validateResponse:(NSHTTPURLResponse *)response data:data error:error]) {
+        if (!error || AFErrorOrUnderlyingErrorHasCodeInDomain(*error, NSURLErrorCannotDecodeContentData, AFURLResponseSerializationErrorDomain)) {
+            return nil;
+        }
+    }
+
+    id responseObject;
+    NSError *serializationError = nil;
+
+    if (data) {
+        responseObject = [NSPropertyListSerialization propertyListWithData:data options:self.readOptions format:NULL error:&serializationError];
+    }
+
+    if (error) {
+        *error = AFErrorWithUnderlyingError(serializationError, *error);
+    }
+
+    return responseObject;
+}
+
+#pragma mark - NSSecureCoding
+
+- (id)initWithCoder:(NSCoder *)decoder {
+    self = [super initWithCoder:decoder];
+    if (!self) {
+        return nil;
+    }
+
+    self.format = (NSPropertyListFormat)[[decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(format))] unsignedIntegerValue];
+    self.readOptions = [[decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(readOptions))] unsignedIntegerValue];
+
+    return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+    [super encodeWithCoder:coder];
+
+    [coder encodeObject:@(self.format) forKey:NSStringFromSelector(@selector(format))];
+    [coder encodeObject:@(self.readOptions) forKey:NSStringFromSelector(@selector(readOptions))];
+}
+
+#pragma mark - NSCopying
+
+- (id)copyWithZone:(NSZone *)zone {
+    AFPropertyListResponseSerializer *serializer = [[[self class] allocWithZone:zone] init];
+    serializer.format = self.format;
+    serializer.readOptions = self.readOptions;
+
+    return serializer;
+}
+
+@end
+
+#pragma mark -
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+#import <CoreGraphics/CoreGraphics.h>
+
+@interface UIImage (AFNetworkingSafeImageLoading)
++ (UIImage *)af_safeImageWithData:(NSData *)data;
+@end
+
+static NSLock* imageLock = nil;
+
+@implementation UIImage (AFNetworkingSafeImageLoading)
+
++ (UIImage *)af_safeImageWithData:(NSData *)data {
+    UIImage* image = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        imageLock = [[NSLock alloc] init];
+    });
+    
+    [imageLock lock];
+    image = [UIImage imageWithData:data];
+    [imageLock unlock];
+    return image;
+}
+
+@end
+
+static UIImage * AFImageWithDataAtScale(NSData *data, CGFloat scale) {
+    UIImage *image = [UIImage af_safeImageWithData:data];
+    if (image.images) {
+        return image;
+    }
+    
+    return [[UIImage alloc] initWithCGImage:[image CGImage] scale:scale orientation:image.imageOrientation];
+}
+
+static UIImage * AFInflatedImageFromResponseWithDataAtScale(NSHTTPURLResponse *response, NSData *data, CGFloat scale) {
+    if (!data || [data length] == 0) {
+        return nil;
+    }
+
+    CGImageRef imageRef = NULL;
+    CGDataProviderRef dataProvider = CGDataProviderCreateWithCFData((__bridge CFDataRef)data);
+
+    if ([response.MIMEType isEqualToString:@"image/png"]) {
+        imageRef = CGImageCreateWithPNGDataProvider(dataProvider,  NULL, true, kCGRenderingIntentDefault);
+    } else if ([response.MIMEType isEqualToString:@"image/jpeg"]) {
+        imageRef = CGImageCreateWithJPEGDataProvider(dataProvider, NULL, true, kCGRenderingIntentDefault);
+
+        if (imageRef) {
+            CGColorSpaceRef imageColorSpace = CGImageGetColorSpace(imageRef);
+            CGColorSpaceModel imageColorSpaceModel = CGColorSpaceGetModel(imageColorSpace);
+
+            // CGImageCreateWithJPEGDataProvider does not properly handle CMKY, so fall back to AFImageWithDataAtScale
+            if (imageColorSpaceModel == kCGColorSpaceModelCMYK) {
+                CGImageRelease(imageRef);
+                imageRef = NULL;
+            }
+        }
+    }
+
+    CGDataProviderRelease(dataProvider);
+
+    UIImage *image = AFImageWithDataAtScale(data, scale);
+    if (!imageRef) {
+        if (image.images || !image) {
+            return image;
+        }
+
+        imageRef = CGImageCreateCopy([image CGImage]);
+        if (!imageRef) {
+            return nil;
+        }
+    }
+
+    size_t width = CGImageGetWidth(imageRef);
+    size_t height = CGImageGetHeight(imageRef);
+    size_t bitsPerComponent = CGImageGetBitsPerComponent(imageRef);
+
+    if (width * height > 1024 * 1024 || bitsPerComponent > 8) {
+        CGImageRelease(imageRef);
+
+        return image;
+    }
+
+    // CGImageGetBytesPerRow() calculates incorrectly in iOS 5.0, so defer to CGBitmapContextCreate
+    size_t bytesPerRow = 0;
+    CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
+    CGColorSpaceModel colorSpaceModel = CGColorSpaceGetModel(colorSpace);
+    CGBitmapInfo bitmapInfo = CGImageGetBitmapInfo(imageRef);
+
+    if (colorSpaceModel == kCGColorSpaceModelRGB) {
+        uint32_t alpha = (bitmapInfo & kCGBitmapAlphaInfoMask);
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wassign-enum"
+        if (alpha == kCGImageAlphaNone) {
+            bitmapInfo &= ~kCGBitmapAlphaInfoMask;
+            bitmapInfo |= kCGImageAlphaNoneSkipFirst;
+        } else if (!(alpha == kCGImageAlphaNoneSkipFirst || alpha == kCGImageAlphaNoneSkipLast)) {
+            bitmapInfo &= ~kCGBitmapAlphaInfoMask;
+            bitmapInfo |= kCGImageAlphaPremultipliedFirst;
+        }
+#pragma clang diagnostic pop
+    }
+
+    CGContextRef context = CGBitmapContextCreate(NULL, width, height, bitsPerComponent, bytesPerRow, colorSpace, bitmapInfo);
+
+    CGColorSpaceRelease(colorSpace);
+
+    if (!context) {
+        CGImageRelease(imageRef);
+
+        return image;
+    }
+
+    CGContextDrawImage(context, CGRectMake(0.0f, 0.0f, width, height), imageRef);
+    CGImageRef inflatedImageRef = CGBitmapContextCreateImage(context);
+
+    CGContextRelease(context);
+
+    UIImage *inflatedImage = [[UIImage alloc] initWithCGImage:inflatedImageRef scale:scale orientation:image.imageOrientation];
+
+    CGImageRelease(inflatedImageRef);
+    CGImageRelease(imageRef);
+
+    return inflatedImage;
+}
+#endif
+
+
+@implementation AFImageResponseSerializer
+
+- (instancetype)init {
+    self = [super init];
+    if (!self) {
+        return nil;
+    }
+
+    self.acceptableContentTypes = [[NSSet alloc] initWithObjects:@"image/tiff", @"image/jpeg", @"image/gif", @"image/png", @"image/ico", @"image/x-icon", @"image/bmp", @"image/x-bmp", @"image/x-xbitmap", @"image/x-win-bitmap", nil];
+
+#if TARGET_OS_IOS
+    self.imageScale = [[UIScreen mainScreen] scale];
+    self.automaticallyInflatesResponseImage = YES;
+#elif  TARGET_OS_WATCH
+    self.imageScale = [[WKInterfaceDevice currentDevice] screenScale];
+    self.automaticallyInflatesResponseImage = YES;
+#endif
+
+    return self;
+}
+
+#pragma mark - AFURLResponseSerializer
+
+- (id)responseObjectForResponse:(NSURLResponse *)response
+                           data:(NSData *)data
+                          error:(NSError *__autoreleasing *)error
+{
+    if (![self validateResponse:(NSHTTPURLResponse *)response data:data error:error]) {
+        if (!error || AFErrorOrUnderlyingErrorHasCodeInDomain(*error, NSURLErrorCannotDecodeContentData, AFURLResponseSerializationErrorDomain)) {
+            return nil;
+        }
+    }
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+    if (self.automaticallyInflatesResponseImage) {
+        return AFInflatedImageFromResponseWithDataAtScale((NSHTTPURLResponse *)response, data, self.imageScale);
+    } else {
+        return AFImageWithDataAtScale(data, self.imageScale);
+    }
+#elif defined(__MAC_OS_X_VERSION_MIN_REQUIRED)
+    // Ensure that the image is set to it's correct pixel width and height
+    NSBitmapImageRep *bitimage = [[NSBitmapImageRep alloc] initWithData:data];
+    NSImage *image = [[NSImage alloc] initWithSize:NSMakeSize([bitimage pixelsWide], [bitimage pixelsHigh])];
+    [image addRepresentation:bitimage];
+
+    return image;
+#endif
+
+    return nil;
+}
+
+#pragma mark - NSSecureCoding
+
+- (id)initWithCoder:(NSCoder *)decoder {
+    self = [super initWithCoder:decoder];
+    if (!self) {
+        return nil;
+    }
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+    NSNumber *imageScale = [decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(imageScale))];
+#if CGFLOAT_IS_DOUBLE
+    self.imageScale = [imageScale doubleValue];
+#else
+    self.imageScale = [imageScale floatValue];
+#endif
+
+    self.automaticallyInflatesResponseImage = [decoder decodeBoolForKey:NSStringFromSelector(@selector(automaticallyInflatesResponseImage))];
+#endif
+
+    return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+    [super encodeWithCoder:coder];
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+    [coder encodeObject:@(self.imageScale) forKey:NSStringFromSelector(@selector(imageScale))];
+    [coder encodeBool:self.automaticallyInflatesResponseImage forKey:NSStringFromSelector(@selector(automaticallyInflatesResponseImage))];
+#endif
+}
+
+#pragma mark - NSCopying
+
+- (id)copyWithZone:(NSZone *)zone {
+    AFImageResponseSerializer *serializer = [[[self class] allocWithZone:zone] init];
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+    serializer.imageScale = self.imageScale;
+    serializer.automaticallyInflatesResponseImage = self.automaticallyInflatesResponseImage;
+#endif
+
+    return serializer;
+}
+
+@end
+
+#pragma mark -
+
+@interface AFCompoundResponseSerializer ()
+@property (readwrite, nonatomic, copy) NSArray *responseSerializers;
+@end
+
+@implementation AFCompoundResponseSerializer
+
++ (instancetype)compoundSerializerWithResponseSerializers:(NSArray *)responseSerializers {
+    AFCompoundResponseSerializer *serializer = [[self alloc] init];
+    serializer.responseSerializers = responseSerializers;
+
+    return serializer;
+}
+
+#pragma mark - AFURLResponseSerialization
+
+- (id)responseObjectForResponse:(NSURLResponse *)response
+                           data:(NSData *)data
+                          error:(NSError *__autoreleasing *)error
+{
+    for (id <AFURLResponseSerialization> serializer in self.responseSerializers) {
+        if (![serializer isKindOfClass:[AFHTTPResponseSerializer class]]) {
+            continue;
+        }
+
+        NSError *serializerError = nil;
+        id responseObject = [serializer responseObjectForResponse:response data:data error:&serializerError];
+        if (responseObject) {
+            if (error) {
+                *error = AFErrorWithUnderlyingError(serializerError, *error);
+            }
+
+            return responseObject;
+        }
+    }
+
+    return [super responseObjectForResponse:response data:data error:error];
+}
+
+#pragma mark - NSSecureCoding
+
+- (id)initWithCoder:(NSCoder *)decoder {
+    self = [super initWithCoder:decoder];
+    if (!self) {
+        return nil;
+    }
+
+    self.responseSerializers = [decoder decodeObjectOfClass:[NSArray class] forKey:NSStringFromSelector(@selector(responseSerializers))];
+
+    return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+    [super encodeWithCoder:coder];
+
+    [coder encodeObject:self.responseSerializers forKey:NSStringFromSelector(@selector(responseSerializers))];
+}
+
+#pragma mark - NSCopying
+
+- (id)copyWithZone:(NSZone *)zone {
+    AFCompoundResponseSerializer *serializer = [[[self class] allocWithZone:zone] init];
+    serializer.responseSerializers = self.responseSerializers;
+
+    return serializer;
+}
+
+@end

Example/Pods/AFNetworking/AFNetworking/AFURLSessionManager.h

+// AFURLSessionManager.h
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+
+#import "AFURLResponseSerialization.h"
+#import "AFURLRequestSerialization.h"
+#import "AFSecurityPolicy.h"
+#if !TARGET_OS_WATCH
+#import "AFNetworkReachabilityManager.h"
+#endif
+
+#ifndef NS_DESIGNATED_INITIALIZER
+#if __has_attribute(objc_designated_initializer)
+#define NS_DESIGNATED_INITIALIZER __attribute__((objc_designated_initializer))
+#else
+#define NS_DESIGNATED_INITIALIZER
+#endif
+#endif
+
+/**
+ `AFURLSessionManager` creates and manages an `NSURLSession` object based on a specified `NSURLSessionConfiguration` object, which conforms to `<NSURLSessionTaskDelegate>`, `<NSURLSessionDataDelegate>`, `<NSURLSessionDownloadDelegate>`, and `<NSURLSessionDelegate>`.
+
+ ## Subclassing Notes
+
+ This is the base class for `AFHTTPSessionManager`, which adds functionality specific to making HTTP requests. If you are looking to extend `AFURLSessionManager` specifically for HTTP, consider subclassing `AFHTTPSessionManager` instead.
+
+ ## NSURLSession & NSURLSessionTask Delegate Methods
+
+ `AFURLSessionManager` implements the following delegate methods:
+
+ ### `NSURLSessionDelegate`
+
+ - `URLSession:didBecomeInvalidWithError:`
+ - `URLSession:didReceiveChallenge:completionHandler:`
+ - `URLSessionDidFinishEventsForBackgroundURLSession:`
+
+ ### `NSURLSessionTaskDelegate`
+
+ - `URLSession:willPerformHTTPRedirection:newRequest:completionHandler:`
+ - `URLSession:task:didReceiveChallenge:completionHandler:`
+ - `URLSession:task:didSendBodyData:totalBytesSent:totalBytesExpectedToSend:`
+ - `URLSession:task:didCompleteWithError:`
+
+ ### `NSURLSessionDataDelegate`
+
+ - `URLSession:dataTask:didReceiveResponse:completionHandler:`
+ - `URLSession:dataTask:didBecomeDownloadTask:`
+ - `URLSession:dataTask:didReceiveData:`
+ - `URLSession:dataTask:willCacheResponse:completionHandler:`
+
+ ### `NSURLSessionDownloadDelegate`
+
+ - `URLSession:downloadTask:didFinishDownloadingToURL:`
+ - `URLSession:downloadTask:didWriteData:totalBytesWritten:totalBytesWritten:totalBytesExpectedToWrite:`
+ - `URLSession:downloadTask:didResumeAtOffset:expectedTotalBytes:`
+
+ If any of these methods are overridden in a subclass, they _must_ call the `super` implementation first.
+
+ ## Network Reachability Monitoring
+
+ Network reachability status and change monitoring is available through the `reachabilityManager` property. Applications may choose to monitor network reachability conditions in order to prevent or suspend any outbound requests. See `AFNetworkReachabilityManager` for more details.
+
+ ## NSCoding Caveats
+
+ - Encoded managers do not include any block properties. Be sure to set delegate callback blocks when using `-initWithCoder:` or `NSKeyedUnarchiver`.
+
+ ## NSCopying Caveats
+
+ - `-copy` and `-copyWithZone:` return a new manager with a new `NSURLSession` created from the configuration of the original.
+ - Operation copies do not include any delegate callback blocks, as they often strongly captures a reference to `self`, which would otherwise have the unintuitive side-effect of pointing to the _original_ session manager when copied.
+
+ @warning Managers for background sessions must be owned for the duration of their use. This can be accomplished by creating an application-wide or shared singleton instance.
+ */
+
+NS_ASSUME_NONNULL_BEGIN
+
+#if (defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 70000) || (defined(__MAC_OS_X_VERSION_MAX_ALLOWED) && __MAC_OS_X_VERSION_MAX_ALLOWED >= 1090) || TARGET_OS_WATCH
+
+@interface AFURLSessionManager : NSObject <NSURLSessionDelegate, NSURLSessionTaskDelegate, NSURLSessionDataDelegate, NSURLSessionDownloadDelegate, NSSecureCoding, NSCopying>
+
+/**
+ The managed session.
+ */
+@property (readonly, nonatomic, strong) NSURLSession *session;
+
+/**
+ The operation queue on which delegate callbacks are run.
+ */
+@property (readonly, nonatomic, strong) NSOperationQueue *operationQueue;
+
+/**
+ Responses sent from the server in data tasks created with `dataTaskWithRequest:success:failure:` and run using the `GET` / `POST` / et al. convenience methods are automatically validated and serialized by the response serializer. By default, this property is set to an instance of `AFJSONResponseSerializer`.
+
+ @warning `responseSerializer` must not be `nil`.
+ */
+@property (nonatomic, strong) id <AFURLResponseSerialization> responseSerializer;
+
+///-------------------------------
+/// @name Managing Security Policy
+///-------------------------------
+
+/**
+ The security policy used by created request operations to evaluate server trust for secure connections. `AFURLSessionManager` uses the `defaultPolicy` unless otherwise specified.
+ */
+@property (nonatomic, strong) AFSecurityPolicy *securityPolicy;
+
+#if !TARGET_OS_WATCH
+///--------------------------------------
+/// @name Monitoring Network Reachability
+///--------------------------------------
+
+/**
+ The network reachability manager. `AFURLSessionManager` uses the `sharedManager` by default.
+ */
+@property (readwrite, nonatomic, strong) AFNetworkReachabilityManager *reachabilityManager;
+#endif
+
+///----------------------------
+/// @name Getting Session Tasks
+///----------------------------
+
+/**
+ The data, upload, and download tasks currently run by the managed session.
+ */
+@property (readonly, nonatomic, strong) NSArray *tasks;
+
+/**
+ The data tasks currently run by the managed session.
+ */
+@property (readonly, nonatomic, strong) NSArray *dataTasks;
+
+/**
+ The upload tasks currently run by the managed session.
+ */
+@property (readonly, nonatomic, strong) NSArray *uploadTasks;
+
+/**
+ The download tasks currently run by the managed session.
+ */
+@property (readonly, nonatomic, strong) NSArray *downloadTasks;
+
+///-------------------------------
+/// @name Managing Callback Queues
+///-------------------------------
+
+/**
+ The dispatch queue for `completionBlock`. If `NULL` (default), the main queue is used.
+ */
+#if OS_OBJECT_USE_OBJC
+@property (nonatomic, strong, nullable) dispatch_queue_t completionQueue;
+#else
+@property (nonatomic, assign, nullable) dispatch_queue_t completionQueue;
+#endif
+
+/**
+ The dispatch group for `completionBlock`. If `NULL` (default), a private dispatch group is used.
+ */
+#if OS_OBJECT_USE_OBJC
+@property (nonatomic, strong, nullable) dispatch_group_t completionGroup;
+#else
+@property (nonatomic, assign, nullable) dispatch_group_t completionGroup;
+#endif
+
+///---------------------------------
+/// @name Working Around System Bugs
+///---------------------------------
+
+/**
+ Whether to attempt to retry creation of upload tasks for background sessions when initial call returns `nil`. `NO` by default.
+
+ @bug As of iOS 7.0, there is a bug where upload tasks created for background tasks are sometimes `nil`. As a workaround, if this property is `YES`, AFNetworking will follow Apple's recommendation to try creating the task again.
+
+ @see https://github.com/AFNetworking/AFNetworking/issues/1675
+ */
+@property (nonatomic, assign) BOOL attemptsToRecreateUploadTasksForBackgroundSessions;
+
+///---------------------
+/// @name Initialization
+///---------------------
+
+/**
+ Creates and returns a manager for a session created with the specified configuration. This is the designated initializer.
+
+ @param configuration The configuration used to create the managed session.
+
+ @return A manager for a newly-created session.
+ */
+- (instancetype)initWithSessionConfiguration:(nullable NSURLSessionConfiguration *)configuration NS_DESIGNATED_INITIALIZER;
+
+/**
+ Invalidates the managed session, optionally canceling pending tasks.
+
+ @param cancelPendingTasks Whether or not to cancel pending tasks.
+ */
+- (void)invalidateSessionCancelingTasks:(BOOL)cancelPendingTasks;
+
+///-------------------------
+/// @name Running Data Tasks
+///-------------------------
+
+/**
+ Creates an `NSURLSessionDataTask` with the specified request.
+
+ @param request The HTTP request for the request.
+ @param completionHandler A block object to be executed when the task finishes. This block has no return value and takes three arguments: the server response, the response object created by that serializer, and the error that occurred, if any.
+ */
+- (NSURLSessionDataTask *)dataTaskWithRequest:(NSURLRequest *)request
+                            completionHandler:(nullable void (^)(NSURLResponse *response, id __nullable responseObject,  NSError * __nullable error))completionHandler;
+
+///---------------------------
+/// @name Running Upload Tasks
+///---------------------------
+
+/**
+ Creates an `NSURLSessionUploadTask` with the specified request for a local file.
+
+ @param request The HTTP request for the request.
+ @param fileURL A URL to the local file to be uploaded.
+ @param progress A progress object monitoring the current upload progress.
+ @param completionHandler A block object to be executed when the task finishes. This block has no return value and takes three arguments: the server response, the response object created by that serializer, and the error that occurred, if any.
+
+ @see `attemptsToRecreateUploadTasksForBackgroundSessions`
+ */
+- (NSURLSessionUploadTask *)uploadTaskWithRequest:(NSURLRequest *)request
+                                         fromFile:(NSURL *)fileURL
+                                         progress:(NSProgress * __nullable __autoreleasing * __nullable)progress
+                                completionHandler:(nullable void (^)(NSURLResponse *response, id __nullable responseObject, NSError  * __nullable error))completionHandler;
+
+/**
+ Creates an `NSURLSessionUploadTask` with the specified request for an HTTP body.
+
+ @param request The HTTP request for the request.
+ @param bodyData A data object containing the HTTP body to be uploaded.
+ @param progress A progress object monitoring the current upload progress.
+ @param completionHandler A block object to be executed when the task finishes. This block has no return value and takes three arguments: the server response, the response object created by that serializer, and the error that occurred, if any.
+ */
+- (NSURLSessionUploadTask *)uploadTaskWithRequest:(NSURLRequest *)request
+                                         fromData:(nullable NSData *)bodyData
+                                         progress:(NSProgress * __nullable __autoreleasing * __nullable)progress
+                                completionHandler:(nullable void (^)(NSURLResponse *response, id __nullable responseObject, NSError * __nullable error))completionHandler;
+
+/**
+ Creates an `NSURLSessionUploadTask` with the specified streaming request.
+
+ @param request The HTTP request for the request.
+ @param progress A progress object monitoring the current upload progress.
+ @param completionHandler A block object to be executed when the task finishes. This block has no return value and takes three arguments: the server response, the response object created by that serializer, and the error that occurred, if any.
+ */
+- (NSURLSessionUploadTask *)uploadTaskWithStreamedRequest:(NSURLRequest *)request
+                                                 progress:(NSProgress * __nullable __autoreleasing * __nullable)progress
+                                        completionHandler:(nullable void (^)(NSURLResponse *response, id __nullable responseObject, NSError * __nullable error))completionHandler;
+
+///-----------------------------
+/// @name Running Download Tasks
+///-----------------------------
+
+/**
+ Creates an `NSURLSessionDownloadTask` with the specified request.
+
+ @param request The HTTP request for the request.
+ @param progress A progress object monitoring the current download progress.
+ @param destination A block object to be executed in order to determine the destination of the downloaded file. This block takes two arguments, the target path & the server response, and returns the desired file URL of the resulting download. The temporary file used during the download will be automatically deleted after being moved to the returned URL.
+ @param completionHandler A block to be executed when a task finishes. This block has no return value and takes three arguments: the server response, the path of the downloaded file, and the error describing the network or parsing error that occurred, if any.
+
+ @warning If using a background `NSURLSessionConfiguration` on iOS, these blocks will be lost when the app is terminated. Background sessions may prefer to use `-setDownloadTaskDidFinishDownloadingBlock:` to specify the URL for saving the downloaded file, rather than the destination block of this method.
+ */
+- (NSURLSessionDownloadTask *)downloadTaskWithRequest:(NSURLRequest *)request
+                                             progress:(NSProgress * __nullable __autoreleasing * __nullable)progress
+                                          destination:(nullable NSURL * (^)(NSURL *targetPath, NSURLResponse *response))destination
+                                    completionHandler:(nullable void (^)(NSURLResponse *response, NSURL * __nullable filePath, NSError * __nullable error))completionHandler;
+
+/**
+ Creates an `NSURLSessionDownloadTask` with the specified resume data.
+
+ @param resumeData The data used to resume downloading.
+ @param progress A progress object monitoring the current download progress.
+ @param destination A block object to be executed in order to determine the destination of the downloaded file. This block takes two arguments, the target path & the server response, and returns the desired file URL of the resulting download. The temporary file used during the download will be automatically deleted after being moved to the returned URL.
+ @param completionHandler A block to be executed when a task finishes. This block has no return value and takes three arguments: the server response, the path of the downloaded file, and the error describing the network or parsing error that occurred, if any.
+ */
+- (NSURLSessionDownloadTask *)downloadTaskWithResumeData:(NSData *)resumeData
+                                                progress:(NSProgress * __nullable __autoreleasing * __nullable)progress
+                                             destination:(nullable NSURL * (^)(NSURL *targetPath, NSURLResponse *response))destination
+                                       completionHandler:(nullable void (^)(NSURLResponse *response, NSURL * __nullable filePath, NSError * __nullable error))completionHandler;
+
+///---------------------------------
+/// @name Getting Progress for Tasks
+///---------------------------------
+
+/**
+ Returns the upload progress of the specified task.
+
+ @param uploadTask The session upload task. Must not be `nil`.
+
+ @return An `NSProgress` object reporting the upload progress of a task, or `nil` if the progress is unavailable.
+ */
+- (nullable NSProgress *)uploadProgressForTask:(NSURLSessionUploadTask *)uploadTask;
+
+/**
+ Returns the download progress of the specified task.
+
+ @param downloadTask The session download task. Must not be `nil`.
+
+ @return An `NSProgress` object reporting the download progress of a task, or `nil` if the progress is unavailable.
+ */
+- (nullable NSProgress *)downloadProgressForTask:(NSURLSessionDownloadTask *)downloadTask;
+
+///-----------------------------------------
+/// @name Setting Session Delegate Callbacks
+///-----------------------------------------
+
+/**
+ Sets a block to be executed when the managed session becomes invalid, as handled by the `NSURLSessionDelegate` method `URLSession:didBecomeInvalidWithError:`.
+
+ @param block A block object to be executed when the managed session becomes invalid. The block has no return value, and takes two arguments: the session, and the error related to the cause of invalidation.
+ */
+- (void)setSessionDidBecomeInvalidBlock:(nullable void (^)(NSURLSession *session, NSError *error))block;
+
+/**
+ Sets a block to be executed when a connection level authentication challenge has occurred, as handled by the `NSURLSessionDelegate` method `URLSession:didReceiveChallenge:completionHandler:`.
+
+ @param block A block object to be executed when a connection level authentication challenge has occurred. The block returns the disposition of the authentication challenge, and takes three arguments: the session, the authentication challenge, and a pointer to the credential that should be used to resolve the challenge.
+ */
+- (void)setSessionDidReceiveAuthenticationChallengeBlock:(nullable NSURLSessionAuthChallengeDisposition (^)(NSURLSession *session, NSURLAuthenticationChallenge *challenge, NSURLCredential * __nullable __autoreleasing * __nullable credential))block;
+
+///--------------------------------------
+/// @name Setting Task Delegate Callbacks
+///--------------------------------------
+
+/**
+ Sets a block to be executed when a task requires a new request body stream to send to the remote server, as handled by the `NSURLSessionTaskDelegate` method `URLSession:task:needNewBodyStream:`.
+
+ @param block A block object to be executed when a task requires a new request body stream.
+ */
+- (void)setTaskNeedNewBodyStreamBlock:(nullable NSInputStream * (^)(NSURLSession *session, NSURLSessionTask *task))block;
+
+/**
+ Sets a block to be executed when an HTTP request is attempting to perform a redirection to a different URL, as handled by the `NSURLSessionTaskDelegate` method `URLSession:willPerformHTTPRedirection:newRequest:completionHandler:`.
+
+ @param block A block object to be executed when an HTTP request is attempting to perform a redirection to a different URL. The block returns the request to be made for the redirection, and takes four arguments: the session, the task, the redirection response, and the request corresponding to the redirection response.
+ */
+- (void)setTaskWillPerformHTTPRedirectionBlock:(nullable NSURLRequest * (^)(NSURLSession *session, NSURLSessionTask *task, NSURLResponse *response, NSURLRequest *request))block;
+
+/**
+ Sets a block to be executed when a session task has received a request specific authentication challenge, as handled by the `NSURLSessionTaskDelegate` method `URLSession:task:didReceiveChallenge:completionHandler:`.
+
+ @param block A block object to be executed when a session task has received a request specific authentication challenge. The block returns the disposition of the authentication challenge, and takes four arguments: the session, the task, the authentication challenge, and a pointer to the credential that should be used to resolve the challenge.
+ */
+- (void)setTaskDidReceiveAuthenticationChallengeBlock:(nullable NSURLSessionAuthChallengeDisposition (^)(NSURLSession *session, NSURLSessionTask *task, NSURLAuthenticationChallenge *challenge, NSURLCredential * __nullable __autoreleasing * __nullable credential))block;
+
+/**
+ Sets a block to be executed periodically to track upload progress, as handled by the `NSURLSessionTaskDelegate` method `URLSession:task:didSendBodyData:totalBytesSent:totalBytesExpectedToSend:`.
+
+ @param block A block object to be called when an undetermined number of bytes have been uploaded to the server. This block has no return value and takes five arguments: the session, the task, the number of bytes written since the last time the upload progress block was called, the total bytes written, and the total bytes expected to be written during the request, as initially determined by the length of the HTTP body. This block may be called multiple times, and will execute on the main thread.
+ */
+- (void)setTaskDidSendBodyDataBlock:(nullable void (^)(NSURLSession *session, NSURLSessionTask *task, int64_t bytesSent, int64_t totalBytesSent, int64_t totalBytesExpectedToSend))block;
+
+/**
+ Sets a block to be executed as the last message related to a specific task, as handled by the `NSURLSessionTaskDelegate` method `URLSession:task:didCompleteWithError:`.
+
+ @param block A block object to be executed when a session task is completed. The block has no return value, and takes three arguments: the session, the task, and any error that occurred in the process of executing the task.
+ */
+- (void)setTaskDidCompleteBlock:(nullable void (^)(NSURLSession *session, NSURLSessionTask *task, NSError * __nullable error))block;
+
+///-------------------------------------------
+/// @name Setting Data Task Delegate Callbacks
+///-------------------------------------------
+
+/**
+ Sets a block to be executed when a data task has received a response, as handled by the `NSURLSessionDataDelegate` method `URLSession:dataTask:didReceiveResponse:completionHandler:`.
+
+ @param block A block object to be executed when a data task has received a response. The block returns the disposition of the session response, and takes three arguments: the session, the data task, and the received response.
+ */
+- (void)setDataTaskDidReceiveResponseBlock:(nullable NSURLSessionResponseDisposition (^)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSURLResponse *response))block;
+
+/**
+ Sets a block to be executed when a data task has become a download task, as handled by the `NSURLSessionDataDelegate` method `URLSession:dataTask:didBecomeDownloadTask:`.
+
+ @param block A block object to be executed when a data task has become a download task. The block has no return value, and takes three arguments: the session, the data task, and the download task it has become.
+ */
+- (void)setDataTaskDidBecomeDownloadTaskBlock:(nullable void (^)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSURLSessionDownloadTask *downloadTask))block;
+
+/**
+ Sets a block to be executed when a data task receives data, as handled by the `NSURLSessionDataDelegate` method `URLSession:dataTask:didReceiveData:`.
+
+ @param block A block object to be called when an undetermined number of bytes have been downloaded from the server. This block has no return value and takes three arguments: the session, the data task, and the data received. This block may be called multiple times, and will execute on the session manager operation queue.
+ */
+- (void)setDataTaskDidReceiveDataBlock:(nullable void (^)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSData *data))block;
+
+/**
+ Sets a block to be executed to determine the caching behavior of a data task, as handled by the `NSURLSessionDataDelegate` method `URLSession:dataTask:willCacheResponse:completionHandler:`.
+
+ @param block A block object to be executed to determine the caching behavior of a data task. The block returns the response to cache, and takes three arguments: the session, the data task, and the proposed cached URL response.
+ */
+- (void)setDataTaskWillCacheResponseBlock:(nullable NSCachedURLResponse * (^)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSCachedURLResponse *proposedResponse))block;
+
+/**
+ Sets a block to be executed once all messages enqueued for a session have been delivered, as handled by the `NSURLSessionDataDelegate` method `URLSessionDidFinishEventsForBackgroundURLSession:`.
+
+ @param block A block object to be executed once all messages enqueued for a session have been delivered. The block has no return value and takes a single argument: the session.
+ */
+- (void)setDidFinishEventsForBackgroundURLSessionBlock:(nullable void (^)(NSURLSession *session))block;
+
+///-----------------------------------------------
+/// @name Setting Download Task Delegate Callbacks
+///-----------------------------------------------
+
+/**
+ Sets a block to be executed when a download task has completed a download, as handled by the `NSURLSessionDownloadDelegate` method `URLSession:downloadTask:didFinishDownloadingToURL:`.
+
+ @param block A block object to be executed when a download task has completed. The block returns the URL the download should be moved to, and takes three arguments: the session, the download task, and the temporary location of the downloaded file. If the file manager encounters an error while attempting to move the temporary file to the destination, an `AFURLSessionDownloadTaskDidFailToMoveFileNotification` will be posted, with the download task as its object, and the user info of the error.
+ */
+- (void)setDownloadTaskDidFinishDownloadingBlock:(nullable NSURL * __nullable  (^)(NSURLSession *session, NSURLSessionDownloadTask *downloadTask, NSURL *location))block;
+
+/**
+ Sets a block to be executed periodically to track download progress, as handled by the `NSURLSessionDownloadDelegate` method `URLSession:downloadTask:didWriteData:totalBytesWritten:totalBytesWritten:totalBytesExpectedToWrite:`.
+
+ @param block A block object to be called when an undetermined number of bytes have been downloaded from the server. This block has no return value and takes five arguments: the session, the download task, the number of bytes read since the last time the download progress block was called, the total bytes read, and the total bytes expected to be read during the request, as initially determined by the expected content size of the `NSHTTPURLResponse` object. This block may be called multiple times, and will execute on the session manager operation queue.
+ */
+- (void)setDownloadTaskDidWriteDataBlock:(nullable void (^)(NSURLSession *session, NSURLSessionDownloadTask *downloadTask, int64_t bytesWritten, int64_t totalBytesWritten, int64_t totalBytesExpectedToWrite))block;
+
+/**
+ Sets a block to be executed when a download task has been resumed, as handled by the `NSURLSessionDownloadDelegate` method `URLSession:downloadTask:didResumeAtOffset:expectedTotalBytes:`.
+
+ @param block A block object to be executed when a download task has been resumed. The block has no return value and takes four arguments: the session, the download task, the file offset of the resumed download, and the total number of bytes expected to be downloaded.
+ */
+- (void)setDownloadTaskDidResumeBlock:(nullable void (^)(NSURLSession *session, NSURLSessionDownloadTask *downloadTask, int64_t fileOffset, int64_t expectedTotalBytes))block;
+
+@end
+
+#endif
+
+///--------------------
+/// @name Notifications
+///--------------------
+
+/**
+ Posted when a task begins executing.
+
+ @deprecated Use `AFNetworkingTaskDidResumeNotification` instead.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingTaskDidStartNotification DEPRECATED_ATTRIBUTE;
+
+/**
+ Posted when a task resumes.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingTaskDidResumeNotification;
+
+/**
+ Posted when a task finishes executing. Includes a userInfo dictionary with additional information about the task.
+
+ @deprecated Use `AFNetworkingTaskDidCompleteNotification` instead.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingTaskDidFinishNotification DEPRECATED_ATTRIBUTE;
+
+/**
+ Posted when a task finishes executing. Includes a userInfo dictionary with additional information about the task.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingTaskDidCompleteNotification;
+
+/**
+ Posted when a task suspends its execution.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingTaskDidSuspendNotification;
+
+/**
+ Posted when a session is invalidated.
+ */
+FOUNDATION_EXPORT NSString * const AFURLSessionDidInvalidateNotification;
+
+/**
+ Posted when a session download task encountered an error when moving the temporary download file to a specified destination.
+ */
+FOUNDATION_EXPORT NSString * const AFURLSessionDownloadTaskDidFailToMoveFileNotification;
+
+/**
+ The raw response data of the task. Included in the userInfo dictionary of the `AFNetworkingTaskDidFinishNotification` if response data exists for the task.
+
+ @deprecated Use `AFNetworkingTaskDidCompleteResponseDataKey` instead.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingTaskDidFinishResponseDataKey DEPRECATED_ATTRIBUTE;
+
+/**
+ The raw response data of the task. Included in the userInfo dictionary of the `AFNetworkingTaskDidFinishNotification` if response data exists for the task.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingTaskDidCompleteResponseDataKey;
+
+/**
+ The serialized response object of the task. Included in the userInfo dictionary of the `AFNetworkingTaskDidFinishNotification` if the response was serialized.
+
+ @deprecated Use `AFNetworkingTaskDidCompleteSerializedResponseKey` instead.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingTaskDidFinishSerializedResponseKey DEPRECATED_ATTRIBUTE;
+
+/**
+ The serialized response object of the task. Included in the userInfo dictionary of the `AFNetworkingTaskDidFinishNotification` if the response was serialized.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingTaskDidCompleteSerializedResponseKey;
+
+/**
+ The response serializer used to serialize the response. Included in the userInfo dictionary of the `AFNetworkingTaskDidFinishNotification` if the task has an associated response serializer.
+
+ @deprecated Use `AFNetworkingTaskDidCompleteResponseSerializerKey` instead.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingTaskDidFinishResponseSerializerKey DEPRECATED_ATTRIBUTE;
+
+/**
+ The response serializer used to serialize the response. Included in the userInfo dictionary of the `AFNetworkingTaskDidFinishNotification` if the task has an associated response serializer.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingTaskDidCompleteResponseSerializerKey;
+
+/**
+ The file path associated with the download task. Included in the userInfo dictionary of the `AFNetworkingTaskDidFinishNotification` if an the response data has been stored directly to disk.
+
+ @deprecated Use `AFNetworkingTaskDidCompleteAssetPathKey` instead.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingTaskDidFinishAssetPathKey DEPRECATED_ATTRIBUTE;
+
+/**
+ The file path associated with the download task. Included in the userInfo dictionary of the `AFNetworkingTaskDidFinishNotification` if an the response data has been stored directly to disk.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingTaskDidCompleteAssetPathKey;
+
+/**
+ Any error associated with the task, or the serialization of the response. Included in the userInfo dictionary of the `AFNetworkingTaskDidFinishNotification` if an error exists.
+
+ @deprecated Use `AFNetworkingTaskDidCompleteErrorKey` instead.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingTaskDidFinishErrorKey DEPRECATED_ATTRIBUTE;
+
+/**
+ Any error associated with the task, or the serialization of the response. Included in the userInfo dictionary of the `AFNetworkingTaskDidFinishNotification` if an error exists.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingTaskDidCompleteErrorKey;
+
+NS_ASSUME_NONNULL_END

Example/Pods/AFNetworking/AFNetworking/AFURLSessionManager.m

+// AFURLSessionManager.m
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "AFURLSessionManager.h"
+#import <objc/runtime.h>
+
+#if (defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 70000) || (defined(__MAC_OS_X_VERSION_MAX_ALLOWED) && __MAC_OS_X_VERSION_MAX_ALLOWED >= 1090)
+
+static dispatch_queue_t url_session_manager_creation_queue() {
+    static dispatch_queue_t af_url_session_manager_creation_queue;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        af_url_session_manager_creation_queue = dispatch_queue_create("com.alamofire.networking.session.manager.creation", DISPATCH_QUEUE_SERIAL);
+    });
+
+    return af_url_session_manager_creation_queue;
+}
+
+static dispatch_queue_t url_session_manager_processing_queue() {
+    static dispatch_queue_t af_url_session_manager_processing_queue;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        af_url_session_manager_processing_queue = dispatch_queue_create("com.alamofire.networking.session.manager.processing", DISPATCH_QUEUE_CONCURRENT);
+    });
+
+    return af_url_session_manager_processing_queue;
+}
+
+static dispatch_group_t url_session_manager_completion_group() {
+    static dispatch_group_t af_url_session_manager_completion_group;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        af_url_session_manager_completion_group = dispatch_group_create();
+    });
+
+    return af_url_session_manager_completion_group;
+}
+
+NSString * const AFNetworkingTaskDidResumeNotification = @"com.alamofire.networking.task.resume";
+NSString * const AFNetworkingTaskDidCompleteNotification = @"com.alamofire.networking.task.complete";
+NSString * const AFNetworkingTaskDidSuspendNotification = @"com.alamofire.networking.task.suspend";
+NSString * const AFURLSessionDidInvalidateNotification = @"com.alamofire.networking.session.invalidate";
+NSString * const AFURLSessionDownloadTaskDidFailToMoveFileNotification = @"com.alamofire.networking.session.download.file-manager-error";
+
+NSString * const AFNetworkingTaskDidStartNotification = @"com.alamofire.networking.task.resume"; // Deprecated
+NSString * const AFNetworkingTaskDidFinishNotification = @"com.alamofire.networking.task.complete"; // Deprecated
+
+NSString * const AFNetworkingTaskDidCompleteSerializedResponseKey = @"com.alamofire.networking.task.complete.serializedresponse";
+NSString * const AFNetworkingTaskDidCompleteResponseSerializerKey = @"com.alamofire.networking.task.complete.responseserializer";
+NSString * const AFNetworkingTaskDidCompleteResponseDataKey = @"com.alamofire.networking.complete.finish.responsedata";
+NSString * const AFNetworkingTaskDidCompleteErrorKey = @"com.alamofire.networking.task.complete.error";
+NSString * const AFNetworkingTaskDidCompleteAssetPathKey = @"com.alamofire.networking.task.complete.assetpath";
+
+NSString * const AFNetworkingTaskDidFinishSerializedResponseKey = @"com.alamofire.networking.task.complete.serializedresponse"; // Deprecated
+NSString * const AFNetworkingTaskDidFinishResponseSerializerKey = @"com.alamofire.networking.task.complete.responseserializer"; // Deprecated
+NSString * const AFNetworkingTaskDidFinishResponseDataKey = @"com.alamofire.networking.complete.finish.responsedata"; // Deprecated
+NSString * const AFNetworkingTaskDidFinishErrorKey = @"com.alamofire.networking.task.complete.error"; // Deprecated
+NSString * const AFNetworkingTaskDidFinishAssetPathKey = @"com.alamofire.networking.task.complete.assetpath"; // Deprecated
+
+static NSString * const AFURLSessionManagerLockName = @"com.alamofire.networking.session.manager.lock";
+
+static NSUInteger const AFMaximumNumberOfAttemptsToRecreateBackgroundSessionUploadTask = 3;
+
+static void * AFTaskStateChangedContext = &AFTaskStateChangedContext;
+
+typedef void (^AFURLSessionDidBecomeInvalidBlock)(NSURLSession *session, NSError *error);
+typedef NSURLSessionAuthChallengeDisposition (^AFURLSessionDidReceiveAuthenticationChallengeBlock)(NSURLSession *session, NSURLAuthenticationChallenge *challenge, NSURLCredential * __autoreleasing *credential);
+
+typedef NSURLRequest * (^AFURLSessionTaskWillPerformHTTPRedirectionBlock)(NSURLSession *session, NSURLSessionTask *task, NSURLResponse *response, NSURLRequest *request);
+typedef NSURLSessionAuthChallengeDisposition (^AFURLSessionTaskDidReceiveAuthenticationChallengeBlock)(NSURLSession *session, NSURLSessionTask *task, NSURLAuthenticationChallenge *challenge, NSURLCredential * __autoreleasing *credential);
+typedef void (^AFURLSessionDidFinishEventsForBackgroundURLSessionBlock)(NSURLSession *session);
+
+typedef NSInputStream * (^AFURLSessionTaskNeedNewBodyStreamBlock)(NSURLSession *session, NSURLSessionTask *task);
+typedef void (^AFURLSessionTaskDidSendBodyDataBlock)(NSURLSession *session, NSURLSessionTask *task, int64_t bytesSent, int64_t totalBytesSent, int64_t totalBytesExpectedToSend);
+typedef void (^AFURLSessionTaskDidCompleteBlock)(NSURLSession *session, NSURLSessionTask *task, NSError *error);
+
+typedef NSURLSessionResponseDisposition (^AFURLSessionDataTaskDidReceiveResponseBlock)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSURLResponse *response);
+typedef void (^AFURLSessionDataTaskDidBecomeDownloadTaskBlock)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSURLSessionDownloadTask *downloadTask);
+typedef void (^AFURLSessionDataTaskDidReceiveDataBlock)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSData *data);
+typedef NSCachedURLResponse * (^AFURLSessionDataTaskWillCacheResponseBlock)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSCachedURLResponse *proposedResponse);
+
+typedef NSURL * (^AFURLSessionDownloadTaskDidFinishDownloadingBlock)(NSURLSession *session, NSURLSessionDownloadTask *downloadTask, NSURL *location);
+typedef void (^AFURLSessionDownloadTaskDidWriteDataBlock)(NSURLSession *session, NSURLSessionDownloadTask *downloadTask, int64_t bytesWritten, int64_t totalBytesWritten, int64_t totalBytesExpectedToWrite);
+typedef void (^AFURLSessionDownloadTaskDidResumeBlock)(NSURLSession *session, NSURLSessionDownloadTask *downloadTask, int64_t fileOffset, int64_t expectedTotalBytes);
+
+typedef void (^AFURLSessionTaskCompletionHandler)(NSURLResponse *response, id responseObject, NSError *error);
+
+#pragma mark -
+
+@interface AFURLSessionManagerTaskDelegate : NSObject <NSURLSessionTaskDelegate, NSURLSessionDataDelegate, NSURLSessionDownloadDelegate>
+@property (nonatomic, weak) AFURLSessionManager *manager;
+@property (nonatomic, strong) NSMutableData *mutableData;
+@property (nonatomic, strong) NSProgress *progress;
+@property (nonatomic, copy) NSURL *downloadFileURL;
+@property (nonatomic, copy) AFURLSessionDownloadTaskDidFinishDownloadingBlock downloadTaskDidFinishDownloading;
+@property (nonatomic, copy) AFURLSessionTaskCompletionHandler completionHandler;
+@end
+
+@implementation AFURLSessionManagerTaskDelegate
+
+- (instancetype)init {
+    self = [super init];
+    if (!self) {
+        return nil;
+    }
+
+    self.mutableData = [NSMutableData data];
+
+    self.progress = [NSProgress progressWithTotalUnitCount:0];
+
+    return self;
+}
+
+#pragma mark - NSURLSessionTaskDelegate
+
+- (void)URLSession:(__unused NSURLSession *)session
+              task:(__unused NSURLSessionTask *)task
+   didSendBodyData:(__unused int64_t)bytesSent
+    totalBytesSent:(int64_t)totalBytesSent
+totalBytesExpectedToSend:(int64_t)totalBytesExpectedToSend
+{
+    self.progress.totalUnitCount = totalBytesExpectedToSend;
+    self.progress.completedUnitCount = totalBytesSent;
+}
+
+- (void)URLSession:(__unused NSURLSession *)session
+              task:(NSURLSessionTask *)task
+didCompleteWithError:(NSError *)error
+{
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+    __strong AFURLSessionManager *manager = self.manager;
+
+    __block id responseObject = nil;
+
+    __block NSMutableDictionary *userInfo = [NSMutableDictionary dictionary];
+    userInfo[AFNetworkingTaskDidCompleteResponseSerializerKey] = manager.responseSerializer;
+
+    //Performance Improvement from #2672
+    NSData *data = nil;
+    if (self.mutableData) {
+        data = [self.mutableData copy];
+        //We no longer need the reference, so nil it out to gain back some memory.
+        self.mutableData = nil;
+    }
+
+    if (self.downloadFileURL) {
+        userInfo[AFNetworkingTaskDidCompleteAssetPathKey] = self.downloadFileURL;
+    } else if (data) {
+        userInfo[AFNetworkingTaskDidCompleteResponseDataKey] = data;
+    }
+
+    if (error) {
+        userInfo[AFNetworkingTaskDidCompleteErrorKey] = error;
+
+        dispatch_group_async(manager.completionGroup ?: url_session_manager_completion_group(), manager.completionQueue ?: dispatch_get_main_queue(), ^{
+            if (self.completionHandler) {
+                self.completionHandler(task.response, responseObject, error);
+            }
+
+            dispatch_async(dispatch_get_main_queue(), ^{
+                [[NSNotificationCenter defaultCenter] postNotificationName:AFNetworkingTaskDidCompleteNotification object:task userInfo:userInfo];
+            });
+        });
+    } else {
+        dispatch_async(url_session_manager_processing_queue(), ^{
+            NSError *serializationError = nil;
+            responseObject = [manager.responseSerializer responseObjectForResponse:task.response data:data error:&serializationError];
+
+            if (self.downloadFileURL) {
+                responseObject = self.downloadFileURL;
+            }
+
+            if (responseObject) {
+                userInfo[AFNetworkingTaskDidCompleteSerializedResponseKey] = responseObject;
+            }
+
+            if (serializationError) {
+                userInfo[AFNetworkingTaskDidCompleteErrorKey] = serializationError;
+            }
+
+            dispatch_group_async(manager.completionGroup ?: url_session_manager_completion_group(), manager.completionQueue ?: dispatch_get_main_queue(), ^{
+                if (self.completionHandler) {
+                    self.completionHandler(task.response, responseObject, serializationError);
+                }
+
+                dispatch_async(dispatch_get_main_queue(), ^{
+                    [[NSNotificationCenter defaultCenter] postNotificationName:AFNetworkingTaskDidCompleteNotification object:task userInfo:userInfo];
+                });
+            });
+        });
+    }
+#pragma clang diagnostic pop
+}
+
+#pragma mark - NSURLSessionDataTaskDelegate
+
+- (void)URLSession:(__unused NSURLSession *)session
+          dataTask:(__unused NSURLSessionDataTask *)dataTask
+    didReceiveData:(NSData *)data
+{
+    [self.mutableData appendData:data];
+}
+
+#pragma mark - NSURLSessionDownloadTaskDelegate
+
+- (void)URLSession:(NSURLSession *)session
+      downloadTask:(NSURLSessionDownloadTask *)downloadTask
+didFinishDownloadingToURL:(NSURL *)location
+{
+    NSError *fileManagerError = nil;
+    self.downloadFileURL = nil;
+
+    if (self.downloadTaskDidFinishDownloading) {
+        self.downloadFileURL = self.downloadTaskDidFinishDownloading(session, downloadTask, location);
+        if (self.downloadFileURL) {
+            [[NSFileManager defaultManager] moveItemAtURL:location toURL:self.downloadFileURL error:&fileManagerError];
+
+            if (fileManagerError) {
+                [[NSNotificationCenter defaultCenter] postNotificationName:AFURLSessionDownloadTaskDidFailToMoveFileNotification object:downloadTask userInfo:fileManagerError.userInfo];
+            }
+        }
+    }
+}
+
+- (void)URLSession:(__unused NSURLSession *)session
+      downloadTask:(__unused NSURLSessionDownloadTask *)downloadTask
+      didWriteData:(__unused int64_t)bytesWritten
+ totalBytesWritten:(int64_t)totalBytesWritten
+totalBytesExpectedToWrite:(int64_t)totalBytesExpectedToWrite
+{
+    self.progress.totalUnitCount = totalBytesExpectedToWrite;
+    self.progress.completedUnitCount = totalBytesWritten;
+}
+
+- (void)URLSession:(__unused NSURLSession *)session
+      downloadTask:(__unused NSURLSessionDownloadTask *)downloadTask
+ didResumeAtOffset:(int64_t)fileOffset
+expectedTotalBytes:(int64_t)expectedTotalBytes {
+    self.progress.totalUnitCount = expectedTotalBytes;
+    self.progress.completedUnitCount = fileOffset;
+}
+
+@end
+
+#pragma mark -
+
+/**
+ *  A workaround for issues related to key-value observing the `state` of an `NSURLSessionTask`.
+ *
+ *  See:
+ *  - https://github.com/AFNetworking/AFNetworking/issues/1477
+ *  - https://github.com/AFNetworking/AFNetworking/issues/2638
+ *  - https://github.com/AFNetworking/AFNetworking/pull/2702
+ */
+
+static inline void af_swizzleSelector(Class theClass, SEL originalSelector, SEL swizzledSelector) {
+    Method originalMethod = class_getInstanceMethod(theClass, originalSelector);
+    Method swizzledMethod = class_getInstanceMethod(theClass, swizzledSelector);
+    method_exchangeImplementations(originalMethod, swizzledMethod);
+}
+
+static inline BOOL af_addMethod(Class theClass, SEL selector, Method method) {
+    return class_addMethod(theClass, selector,  method_getImplementation(method),  method_getTypeEncoding(method));
+}
+
+static NSString * const AFNSURLSessionTaskDidResumeNotification  = @"com.alamofire.networking.nsurlsessiontask.resume";
+static NSString * const AFNSURLSessionTaskDidSuspendNotification = @"com.alamofire.networking.nsurlsessiontask.suspend";
+
+@interface _AFURLSessionTaskSwizzling : NSObject
+
+@end
+
+@implementation _AFURLSessionTaskSwizzling
+
++ (void)load {
+    /**
+     WARNING: Trouble Ahead
+     https://github.com/AFNetworking/AFNetworking/pull/2702
+     */
+
+    if (NSClassFromString(@"NSURLSessionTask")) {
+        /**
+         iOS 7 and iOS 8 differ in NSURLSessionTask implementation, which makes the next bit of code a bit tricky.
+         Many Unit Tests have been built to validate as much of this behavior has possible.
+         Here is what we know:
+            - NSURLSessionTasks are implemented with class clusters, meaning the class you request from the API isn't actually the type of class you will get back.
+            - Simply referencing `[NSURLSessionTask class]` will not work. You need to ask an `NSURLSession` to actually create an object, and grab the class from there.
+            - On iOS 7, `localDataTask` is a `__NSCFLocalDataTask`, which inherits from `__NSCFLocalSessionTask`, which inherits from `__NSCFURLSessionTask`.
+            - On iOS 8, `localDataTask` is a `__NSCFLocalDataTask`, which inherits from `__NSCFLocalSessionTask`, which inherits from `NSURLSessionTask`.
+            - On iOS 7, `__NSCFLocalSessionTask` and `__NSCFURLSessionTask` are the only two classes that have their own implementations of `resume` and `suspend`, and `__NSCFLocalSessionTask` DOES NOT CALL SUPER. This means both classes need to be swizzled.
+            - On iOS 8, `NSURLSessionTask` is the only class that implements `resume` and `suspend`. This means this is the only class that needs to be swizzled.
+            - Because `NSURLSessionTask` is not involved in the class hierarchy for every version of iOS, its easier to add the swizzled methods to a dummy class and manage them there.
+        
+         Some Assumptions:
+            - No implementations of `resume` or `suspend` call super. If this were to change in a future version of iOS, we'd need to handle it.
+            - No background task classes override `resume` or `suspend`
+         
+         The current solution:
+            1) Grab an instance of `__NSCFLocalDataTask` by asking an instance of `NSURLSession` for a data task.
+            2) Grab a pointer to the original implementation of `af_resume`
+            3) Check to see if the current class has an implementation of resume. If so, continue to step 4.
+            4) Grab the super class of the current class.
+            5) Grab a pointer for the current class to the current implementation of `resume`.
+            6) Grab a pointer for the super class to the current implementation of `resume`.
+            7) If the current class implementation of `resume` is not equal to the super class implementation of `resume` AND the current implementation of `resume` is not equal to the original implementation of `af_resume`, THEN swizzle the methods
+            8) Set the current class to the super class, and repeat steps 3-8
+         */
+        NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration ephemeralSessionConfiguration];
+        NSURLSession * session = [NSURLSession sessionWithConfiguration:configuration];
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wnonnull"
+        NSURLSessionDataTask *localDataTask = [session dataTaskWithURL:nil];
+#pragma clang diagnostic pop
+        IMP originalAFResumeIMP = method_getImplementation(class_getInstanceMethod([self class], @selector(af_resume)));
+        Class currentClass = [localDataTask class];
+        
+        while (class_getInstanceMethod(currentClass, @selector(resume))) {
+            Class superClass = [currentClass superclass];
+            IMP classResumeIMP = method_getImplementation(class_getInstanceMethod(currentClass, @selector(resume)));
+            IMP superclassResumeIMP = method_getImplementation(class_getInstanceMethod(superClass, @selector(resume)));
+            if (classResumeIMP != superclassResumeIMP &&
+                originalAFResumeIMP != classResumeIMP) {
+                [self swizzleResumeAndSuspendMethodForClass:currentClass];
+            }
+            currentClass = [currentClass superclass];
+        }
+        
+        [localDataTask cancel];
+        [session finishTasksAndInvalidate];
+    }
+}
+
++ (void)swizzleResumeAndSuspendMethodForClass:(Class)theClass {
+    Method afResumeMethod = class_getInstanceMethod(self, @selector(af_resume));
+    Method afSuspendMethod = class_getInstanceMethod(self, @selector(af_suspend));
+
+    if (af_addMethod(theClass, @selector(af_resume), afResumeMethod)) {
+        af_swizzleSelector(theClass, @selector(resume), @selector(af_resume));
+    }
+
+    if (af_addMethod(theClass, @selector(af_suspend), afSuspendMethod)) {
+        af_swizzleSelector(theClass, @selector(suspend), @selector(af_suspend));
+    }
+}
+
+- (NSURLSessionTaskState)state {
+    NSAssert(NO, @"State method should never be called in the actual dummy class");
+    return NSURLSessionTaskStateCanceling;
+}
+
+- (void)af_resume {
+    NSAssert([self respondsToSelector:@selector(state)], @"Does not respond to state");
+    NSURLSessionTaskState state = [self state];
+    [self af_resume];
+    
+    if (state != NSURLSessionTaskStateRunning) {
+        [[NSNotificationCenter defaultCenter] postNotificationName:AFNSURLSessionTaskDidResumeNotification object:self];
+    }
+}
+
+- (void)af_suspend {
+    NSAssert([self respondsToSelector:@selector(state)], @"Does not respond to state");
+    NSURLSessionTaskState state = [self state];
+    [self af_suspend];
+    
+    if (state != NSURLSessionTaskStateSuspended) {
+        [[NSNotificationCenter defaultCenter] postNotificationName:AFNSURLSessionTaskDidSuspendNotification object:self];
+    }
+}
+@end
+
+#pragma mark -
+
+@interface AFURLSessionManager ()
+@property (readwrite, nonatomic, strong) NSURLSessionConfiguration *sessionConfiguration;
+@property (readwrite, nonatomic, strong) NSOperationQueue *operationQueue;
+@property (readwrite, nonatomic, strong) NSURLSession *session;
+@property (readwrite, nonatomic, strong) NSMutableDictionary *mutableTaskDelegatesKeyedByTaskIdentifier;
+@property (readonly, nonatomic, copy) NSString *taskDescriptionForSessionTasks;
+@property (readwrite, nonatomic, strong) NSLock *lock;
+@property (readwrite, nonatomic, copy) AFURLSessionDidBecomeInvalidBlock sessionDidBecomeInvalid;
+@property (readwrite, nonatomic, copy) AFURLSessionDidReceiveAuthenticationChallengeBlock sessionDidReceiveAuthenticationChallenge;
+@property (readwrite, nonatomic, copy) AFURLSessionDidFinishEventsForBackgroundURLSessionBlock didFinishEventsForBackgroundURLSession;
+@property (readwrite, nonatomic, copy) AFURLSessionTaskWillPerformHTTPRedirectionBlock taskWillPerformHTTPRedirection;
+@property (readwrite, nonatomic, copy) AFURLSessionTaskDidReceiveAuthenticationChallengeBlock taskDidReceiveAuthenticationChallenge;
+@property (readwrite, nonatomic, copy) AFURLSessionTaskNeedNewBodyStreamBlock taskNeedNewBodyStream;
+@property (readwrite, nonatomic, copy) AFURLSessionTaskDidSendBodyDataBlock taskDidSendBodyData;
+@property (readwrite, nonatomic, copy) AFURLSessionTaskDidCompleteBlock taskDidComplete;
+@property (readwrite, nonatomic, copy) AFURLSessionDataTaskDidReceiveResponseBlock dataTaskDidReceiveResponse;
+@property (readwrite, nonatomic, copy) AFURLSessionDataTaskDidBecomeDownloadTaskBlock dataTaskDidBecomeDownloadTask;
+@property (readwrite, nonatomic, copy) AFURLSessionDataTaskDidReceiveDataBlock dataTaskDidReceiveData;
+@property (readwrite, nonatomic, copy) AFURLSessionDataTaskWillCacheResponseBlock dataTaskWillCacheResponse;
+@property (readwrite, nonatomic, copy) AFURLSessionDownloadTaskDidFinishDownloadingBlock downloadTaskDidFinishDownloading;
+@property (readwrite, nonatomic, copy) AFURLSessionDownloadTaskDidWriteDataBlock downloadTaskDidWriteData;
+@property (readwrite, nonatomic, copy) AFURLSessionDownloadTaskDidResumeBlock downloadTaskDidResume;
+@end
+
+@implementation AFURLSessionManager
+
+- (instancetype)init {
+    return [self initWithSessionConfiguration:nil];
+}
+
+- (instancetype)initWithSessionConfiguration:(NSURLSessionConfiguration *)configuration {
+    self = [super init];
+    if (!self) {
+        return nil;
+    }
+
+    if (!configuration) {
+        configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
+    }
+
+    self.sessionConfiguration = configuration;
+
+    self.operationQueue = [[NSOperationQueue alloc] init];
+    self.operationQueue.maxConcurrentOperationCount = 1;
+
+    self.session = [NSURLSession sessionWithConfiguration:self.sessionConfiguration delegate:self delegateQueue:self.operationQueue];
+
+    self.responseSerializer = [AFJSONResponseSerializer serializer];
+
+    self.securityPolicy = [AFSecurityPolicy defaultPolicy];
+
+#if !TARGET_OS_WATCH
+    self.reachabilityManager = [AFNetworkReachabilityManager sharedManager];
+#endif
+
+    self.mutableTaskDelegatesKeyedByTaskIdentifier = [[NSMutableDictionary alloc] init];
+
+    self.lock = [[NSLock alloc] init];
+    self.lock.name = AFURLSessionManagerLockName;
+
+    [self.session getTasksWithCompletionHandler:^(NSArray *dataTasks, NSArray *uploadTasks, NSArray *downloadTasks) {
+        for (NSURLSessionDataTask *task in dataTasks) {
+            [self addDelegateForDataTask:task completionHandler:nil];
+        }
+
+        for (NSURLSessionUploadTask *uploadTask in uploadTasks) {
+            [self addDelegateForUploadTask:uploadTask progress:nil completionHandler:nil];
+        }
+
+        for (NSURLSessionDownloadTask *downloadTask in downloadTasks) {
+            [self addDelegateForDownloadTask:downloadTask progress:nil destination:nil completionHandler:nil];
+        }
+    }];
+
+    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(taskDidResume:) name:AFNSURLSessionTaskDidResumeNotification object:nil];
+    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(taskDidSuspend:) name:AFNSURLSessionTaskDidSuspendNotification object:nil];
+
+    return self;
+}
+
+- (void)dealloc {
+    [[NSNotificationCenter defaultCenter] removeObserver:self];
+}
+
+#pragma mark -
+
+- (NSString *)taskDescriptionForSessionTasks {
+    return [NSString stringWithFormat:@"%p", self];
+}
+
+- (void)taskDidResume:(NSNotification *)notification {
+    NSURLSessionTask *task = notification.object;
+    if ([task respondsToSelector:@selector(taskDescription)]) {
+        if ([task.taskDescription isEqualToString:self.taskDescriptionForSessionTasks]) {
+            dispatch_async(dispatch_get_main_queue(), ^{
+                [[NSNotificationCenter defaultCenter] postNotificationName:AFNetworkingTaskDidResumeNotification object:task];
+            });
+        }
+    }
+}
+
+- (void)taskDidSuspend:(NSNotification *)notification {
+    NSURLSessionTask *task = notification.object;
+    if ([task respondsToSelector:@selector(taskDescription)]) {
+        if ([task.taskDescription isEqualToString:self.taskDescriptionForSessionTasks]) {
+            dispatch_async(dispatch_get_main_queue(), ^{
+                [[NSNotificationCenter defaultCenter] postNotificationName:AFNetworkingTaskDidSuspendNotification object:task];
+            });
+        }
+    }
+}
+
+#pragma mark -
+
+- (AFURLSessionManagerTaskDelegate *)delegateForTask:(NSURLSessionTask *)task {
+    NSParameterAssert(task);
+
+    AFURLSessionManagerTaskDelegate *delegate = nil;
+    [self.lock lock];
+    delegate = self.mutableTaskDelegatesKeyedByTaskIdentifier[@(task.taskIdentifier)];
+    [self.lock unlock];
+
+    return delegate;
+}
+
+- (void)setDelegate:(AFURLSessionManagerTaskDelegate *)delegate
+            forTask:(NSURLSessionTask *)task
+{
+    NSParameterAssert(task);
+    NSParameterAssert(delegate);
+
+    [self.lock lock];
+    self.mutableTaskDelegatesKeyedByTaskIdentifier[@(task.taskIdentifier)] = delegate;
+    [self.lock unlock];
+}
+
+- (void)addDelegateForDataTask:(NSURLSessionDataTask *)dataTask
+             completionHandler:(void (^)(NSURLResponse *response, id responseObject, NSError *error))completionHandler
+{
+    AFURLSessionManagerTaskDelegate *delegate = [[AFURLSessionManagerTaskDelegate alloc] init];
+    delegate.manager = self;
+    delegate.completionHandler = completionHandler;
+
+    dataTask.taskDescription = self.taskDescriptionForSessionTasks;
+    [self setDelegate:delegate forTask:dataTask];
+}
+
+- (void)addDelegateForUploadTask:(NSURLSessionUploadTask *)uploadTask
+                        progress:(NSProgress * __autoreleasing *)progress
+               completionHandler:(void (^)(NSURLResponse *response, id responseObject, NSError *error))completionHandler
+{
+    AFURLSessionManagerTaskDelegate *delegate = [[AFURLSessionManagerTaskDelegate alloc] init];
+    delegate.manager = self;
+    delegate.completionHandler = completionHandler;
+
+    int64_t totalUnitCount = uploadTask.countOfBytesExpectedToSend;
+    if(totalUnitCount == NSURLSessionTransferSizeUnknown) {
+        NSString *contentLength = [uploadTask.originalRequest valueForHTTPHeaderField:@"Content-Length"];
+        if(contentLength) {
+            totalUnitCount = (int64_t)[contentLength longLongValue];
+        }
+    }
+
+    if (delegate.progress) {
+        delegate.progress.totalUnitCount = totalUnitCount;
+    } else {
+        delegate.progress = [NSProgress progressWithTotalUnitCount:totalUnitCount];
+    }
+
+    delegate.progress.pausingHandler = ^{
+        [uploadTask suspend];
+    };
+    delegate.progress.cancellationHandler = ^{
+        [uploadTask cancel];
+    };
+
+    if (progress) {
+        *progress = delegate.progress;
+    }
+
+    uploadTask.taskDescription = self.taskDescriptionForSessionTasks;
+
+    [self setDelegate:delegate forTask:uploadTask];
+}
+
+- (void)addDelegateForDownloadTask:(NSURLSessionDownloadTask *)downloadTask
+                          progress:(NSProgress * __autoreleasing *)progress
+                       destination:(NSURL * (^)(NSURL *targetPath, NSURLResponse *response))destination
+                 completionHandler:(void (^)(NSURLResponse *response, NSURL *filePath, NSError *error))completionHandler
+{
+    AFURLSessionManagerTaskDelegate *delegate = [[AFURLSessionManagerTaskDelegate alloc] init];
+    delegate.manager = self;
+    delegate.completionHandler = completionHandler;
+
+    if (destination) {
+        delegate.downloadTaskDidFinishDownloading = ^NSURL * (NSURLSession * __unused session, NSURLSessionDownloadTask *task, NSURL *location) {
+            return destination(location, task.response);
+        };
+    }
+
+    if (progress) {
+        *progress = delegate.progress;
+    }
+
+    downloadTask.taskDescription = self.taskDescriptionForSessionTasks;
+
+    [self setDelegate:delegate forTask:downloadTask];
+}
+
+- (void)removeDelegateForTask:(NSURLSessionTask *)task {
+    NSParameterAssert(task);
+
+    [self.lock lock];
+    [self.mutableTaskDelegatesKeyedByTaskIdentifier removeObjectForKey:@(task.taskIdentifier)];
+    [self.lock unlock];
+}
+
+- (void)removeAllDelegates {
+    [self.lock lock];
+    [self.mutableTaskDelegatesKeyedByTaskIdentifier removeAllObjects];
+    [self.lock unlock];
+}
+
+#pragma mark -
+
+- (NSArray *)tasksForKeyPath:(NSString *)keyPath {
+    __block NSArray *tasks = nil;
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+    [self.session getTasksWithCompletionHandler:^(NSArray *dataTasks, NSArray *uploadTasks, NSArray *downloadTasks) {
+        if ([keyPath isEqualToString:NSStringFromSelector(@selector(dataTasks))]) {
+            tasks = dataTasks;
+        } else if ([keyPath isEqualToString:NSStringFromSelector(@selector(uploadTasks))]) {
+            tasks = uploadTasks;
+        } else if ([keyPath isEqualToString:NSStringFromSelector(@selector(downloadTasks))]) {
+            tasks = downloadTasks;
+        } else if ([keyPath isEqualToString:NSStringFromSelector(@selector(tasks))]) {
+            tasks = [@[dataTasks, uploadTasks, downloadTasks] valueForKeyPath:@"@unionOfArrays.self"];
+        }
+
+        dispatch_semaphore_signal(semaphore);
+    }];
+
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+    return tasks;
+}
+
+- (NSArray *)tasks {
+    return [self tasksForKeyPath:NSStringFromSelector(_cmd)];
+}
+
+- (NSArray *)dataTasks {
+    return [self tasksForKeyPath:NSStringFromSelector(_cmd)];
+}
+
+- (NSArray *)uploadTasks {
+    return [self tasksForKeyPath:NSStringFromSelector(_cmd)];
+}
+
+- (NSArray *)downloadTasks {
+    return [self tasksForKeyPath:NSStringFromSelector(_cmd)];
+}
+
+#pragma mark -
+
+- (void)invalidateSessionCancelingTasks:(BOOL)cancelPendingTasks {
+    dispatch_async(dispatch_get_main_queue(), ^{
+        if (cancelPendingTasks) {
+            [self.session invalidateAndCancel];
+        } else {
+            [self.session finishTasksAndInvalidate];
+        }
+    });
+}
+
+#pragma mark -
+
+- (void)setResponseSerializer:(id <AFURLResponseSerialization>)responseSerializer {
+    NSParameterAssert(responseSerializer);
+
+    _responseSerializer = responseSerializer;
+}
+
+#pragma mark -
+
+- (NSURLSessionDataTask *)dataTaskWithRequest:(NSURLRequest *)request
+                            completionHandler:(void (^)(NSURLResponse *response, id responseObject, NSError *error))completionHandler
+{
+    __block NSURLSessionDataTask *dataTask = nil;
+    dispatch_sync(url_session_manager_creation_queue(), ^{
+        dataTask = [self.session dataTaskWithRequest:request];
+    });
+
+    [self addDelegateForDataTask:dataTask completionHandler:completionHandler];
+
+    return dataTask;
+}
+
+#pragma mark -
+
+- (NSURLSessionUploadTask *)uploadTaskWithRequest:(NSURLRequest *)request
+                                         fromFile:(NSURL *)fileURL
+                                         progress:(NSProgress * __autoreleasing *)progress
+                                completionHandler:(void (^)(NSURLResponse *response, id responseObject, NSError *error))completionHandler
+{
+    __block NSURLSessionUploadTask *uploadTask = nil;
+    dispatch_sync(url_session_manager_creation_queue(), ^{
+        uploadTask = [self.session uploadTaskWithRequest:request fromFile:fileURL];
+    });
+
+    if (!uploadTask && self.attemptsToRecreateUploadTasksForBackgroundSessions && self.session.configuration.identifier) {
+        for (NSUInteger attempts = 0; !uploadTask && attempts < AFMaximumNumberOfAttemptsToRecreateBackgroundSessionUploadTask; attempts++) {
+            uploadTask = [self.session uploadTaskWithRequest:request fromFile:fileURL];
+        }
+    }
+
+    [self addDelegateForUploadTask:uploadTask progress:progress completionHandler:completionHandler];
+
+    return uploadTask;
+}
+
+- (NSURLSessionUploadTask *)uploadTaskWithRequest:(NSURLRequest *)request
+                                         fromData:(NSData *)bodyData
+                                         progress:(NSProgress * __autoreleasing *)progress
+                                completionHandler:(void (^)(NSURLResponse *response, id responseObject, NSError *error))completionHandler
+{
+    __block NSURLSessionUploadTask *uploadTask = nil;
+    dispatch_sync(url_session_manager_creation_queue(), ^{
+        uploadTask = [self.session uploadTaskWithRequest:request fromData:bodyData];
+    });
+
+    [self addDelegateForUploadTask:uploadTask progress:progress completionHandler:completionHandler];
+
+    return uploadTask;
+}
+
+- (NSURLSessionUploadTask *)uploadTaskWithStreamedRequest:(NSURLRequest *)request
+                                                 progress:(NSProgress * __autoreleasing *)progress
+                                        completionHandler:(void (^)(NSURLResponse *response, id responseObject, NSError *error))completionHandler
+{
+    __block NSURLSessionUploadTask *uploadTask = nil;
+    dispatch_sync(url_session_manager_creation_queue(), ^{
+        uploadTask = [self.session uploadTaskWithStreamedRequest:request];
+    });
+
+    [self addDelegateForUploadTask:uploadTask progress:progress completionHandler:completionHandler];
+
+    return uploadTask;
+}
+
+#pragma mark -
+
+- (NSURLSessionDownloadTask *)downloadTaskWithRequest:(NSURLRequest *)request
+                                             progress:(NSProgress * __autoreleasing *)progress
+                                          destination:(NSURL * (^)(NSURL *targetPath, NSURLResponse *response))destination
+                                    completionHandler:(void (^)(NSURLResponse *response, NSURL *filePath, NSError *error))completionHandler
+{
+    __block NSURLSessionDownloadTask *downloadTask = nil;
+    dispatch_sync(url_session_manager_creation_queue(), ^{
+        downloadTask = [self.session downloadTaskWithRequest:request];
+    });
+
+    [self addDelegateForDownloadTask:downloadTask progress:progress destination:destination completionHandler:completionHandler];
+
+    return downloadTask;
+}
+
+- (NSURLSessionDownloadTask *)downloadTaskWithResumeData:(NSData *)resumeData
+                                                progress:(NSProgress * __autoreleasing *)progress
+                                             destination:(NSURL * (^)(NSURL *targetPath, NSURLResponse *response))destination
+                                       completionHandler:(void (^)(NSURLResponse *response, NSURL *filePath, NSError *error))completionHandler
+{
+    __block NSURLSessionDownloadTask *downloadTask = nil;
+    dispatch_sync(url_session_manager_creation_queue(), ^{
+        downloadTask = [self.session downloadTaskWithResumeData:resumeData];
+    });
+
+    [self addDelegateForDownloadTask:downloadTask progress:progress destination:destination completionHandler:completionHandler];
+
+    return downloadTask;
+}
+
+#pragma mark -
+
+- (NSProgress *)uploadProgressForTask:(NSURLSessionUploadTask *)uploadTask {
+    return [[self delegateForTask:uploadTask] progress];
+}
+
+- (NSProgress *)downloadProgressForTask:(NSURLSessionDownloadTask *)downloadTask {
+    return [[self delegateForTask:downloadTask] progress];
+}
+
+#pragma mark -
+
+- (void)setSessionDidBecomeInvalidBlock:(void (^)(NSURLSession *session, NSError *error))block {
+    self.sessionDidBecomeInvalid = block;
+}
+
+- (void)setSessionDidReceiveAuthenticationChallengeBlock:(NSURLSessionAuthChallengeDisposition (^)(NSURLSession *session, NSURLAuthenticationChallenge *challenge, NSURLCredential * __autoreleasing *credential))block {
+    self.sessionDidReceiveAuthenticationChallenge = block;
+}
+
+- (void)setDidFinishEventsForBackgroundURLSessionBlock:(void (^)(NSURLSession *session))block {
+    self.didFinishEventsForBackgroundURLSession = block;
+}
+
+#pragma mark -
+
+- (void)setTaskNeedNewBodyStreamBlock:(NSInputStream * (^)(NSURLSession *session, NSURLSessionTask *task))block {
+    self.taskNeedNewBodyStream = block;
+}
+
+- (void)setTaskWillPerformHTTPRedirectionBlock:(NSURLRequest * (^)(NSURLSession *session, NSURLSessionTask *task, NSURLResponse *response, NSURLRequest *request))block {
+    self.taskWillPerformHTTPRedirection = block;
+}
+
+- (void)setTaskDidReceiveAuthenticationChallengeBlock:(NSURLSessionAuthChallengeDisposition (^)(NSURLSession *session, NSURLSessionTask *task, NSURLAuthenticationChallenge *challenge, NSURLCredential * __autoreleasing *credential))block {
+    self.taskDidReceiveAuthenticationChallenge = block;
+}
+
+- (void)setTaskDidSendBodyDataBlock:(void (^)(NSURLSession *session, NSURLSessionTask *task, int64_t bytesSent, int64_t totalBytesSent, int64_t totalBytesExpectedToSend))block {
+    self.taskDidSendBodyData = block;
+}
+
+- (void)setTaskDidCompleteBlock:(void (^)(NSURLSession *session, NSURLSessionTask *task, NSError *error))block {
+    self.taskDidComplete = block;
+}
+
+#pragma mark -
+
+- (void)setDataTaskDidReceiveResponseBlock:(NSURLSessionResponseDisposition (^)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSURLResponse *response))block {
+    self.dataTaskDidReceiveResponse = block;
+}
+
+- (void)setDataTaskDidBecomeDownloadTaskBlock:(void (^)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSURLSessionDownloadTask *downloadTask))block {
+    self.dataTaskDidBecomeDownloadTask = block;
+}
+
+- (void)setDataTaskDidReceiveDataBlock:(void (^)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSData *data))block {
+    self.dataTaskDidReceiveData = block;
+}
+
+- (void)setDataTaskWillCacheResponseBlock:(NSCachedURLResponse * (^)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSCachedURLResponse *proposedResponse))block {
+    self.dataTaskWillCacheResponse = block;
+}
+
+#pragma mark -
+
+- (void)setDownloadTaskDidFinishDownloadingBlock:(NSURL * (^)(NSURLSession *session, NSURLSessionDownloadTask *downloadTask, NSURL *location))block {
+    self.downloadTaskDidFinishDownloading = block;
+}
+
+- (void)setDownloadTaskDidWriteDataBlock:(void (^)(NSURLSession *session, NSURLSessionDownloadTask *downloadTask, int64_t bytesWritten, int64_t totalBytesWritten, int64_t totalBytesExpectedToWrite))block {
+    self.downloadTaskDidWriteData = block;
+}
+
+- (void)setDownloadTaskDidResumeBlock:(void (^)(NSURLSession *session, NSURLSessionDownloadTask *downloadTask, int64_t fileOffset, int64_t expectedTotalBytes))block {
+    self.downloadTaskDidResume = block;
+}
+
+#pragma mark - NSObject
+
+- (NSString *)description {
+    return [NSString stringWithFormat:@"<%@: %p, session: %@, operationQueue: %@>", NSStringFromClass([self class]), self, self.session, self.operationQueue];
+}
+
+- (BOOL)respondsToSelector:(SEL)selector {
+    if (selector == @selector(URLSession:task:willPerformHTTPRedirection:newRequest:completionHandler:)) {
+        return self.taskWillPerformHTTPRedirection != nil;
+    } else if (selector == @selector(URLSession:dataTask:didReceiveResponse:completionHandler:)) {
+        return self.dataTaskDidReceiveResponse != nil;
+    } else if (selector == @selector(URLSession:dataTask:willCacheResponse:completionHandler:)) {
+        return self.dataTaskWillCacheResponse != nil;
+    } else if (selector == @selector(URLSessionDidFinishEventsForBackgroundURLSession:)) {
+        return self.didFinishEventsForBackgroundURLSession != nil;
+    }
+
+    return [[self class] instancesRespondToSelector:selector];
+}
+
+#pragma mark - NSURLSessionDelegate
+
+- (void)URLSession:(NSURLSession *)session
+didBecomeInvalidWithError:(NSError *)error
+{
+    if (self.sessionDidBecomeInvalid) {
+        self.sessionDidBecomeInvalid(session, error);
+    }
+
+    [self removeAllDelegates];
+    [[NSNotificationCenter defaultCenter] postNotificationName:AFURLSessionDidInvalidateNotification object:session];
+}
+
+- (void)URLSession:(NSURLSession *)session
+didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge
+ completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential *credential))completionHandler
+{
+    NSURLSessionAuthChallengeDisposition disposition = NSURLSessionAuthChallengePerformDefaultHandling;
+    __block NSURLCredential *credential = nil;
+
+    if (self.sessionDidReceiveAuthenticationChallenge) {
+        disposition = self.sessionDidReceiveAuthenticationChallenge(session, challenge, &credential);
+    } else {
+        if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust]) {
+            if ([self.securityPolicy evaluateServerTrust:challenge.protectionSpace.serverTrust forDomain:challenge.protectionSpace.host]) {
+                credential = [NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust];
+                if (credential) {
+                    disposition = NSURLSessionAuthChallengeUseCredential;
+                } else {
+                    disposition = NSURLSessionAuthChallengePerformDefaultHandling;
+                }
+            } else {
+                disposition = NSURLSessionAuthChallengeCancelAuthenticationChallenge;
+            }
+        } else {
+            disposition = NSURLSessionAuthChallengePerformDefaultHandling;
+        }
+    }
+
+    if (completionHandler) {
+        completionHandler(disposition, credential);
+    }
+}
+
+#pragma mark - NSURLSessionTaskDelegate
+
+- (void)URLSession:(NSURLSession *)session
+              task:(NSURLSessionTask *)task
+willPerformHTTPRedirection:(NSHTTPURLResponse *)response
+        newRequest:(NSURLRequest *)request
+ completionHandler:(void (^)(NSURLRequest *))completionHandler
+{
+    NSURLRequest *redirectRequest = request;
+
+    if (self.taskWillPerformHTTPRedirection) {
+        redirectRequest = self.taskWillPerformHTTPRedirection(session, task, response, request);
+    }
+
+    if (completionHandler) {
+        completionHandler(redirectRequest);
+    }
+}
+
+- (void)URLSession:(NSURLSession *)session
+              task:(NSURLSessionTask *)task
+didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge
+ completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential *credential))completionHandler
+{
+    NSURLSessionAuthChallengeDisposition disposition = NSURLSessionAuthChallengePerformDefaultHandling;
+    __block NSURLCredential *credential = nil;
+
+    if (self.taskDidReceiveAuthenticationChallenge) {
+        disposition = self.taskDidReceiveAuthenticationChallenge(session, task, challenge, &credential);
+    } else {
+        if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust]) {
+            if ([self.securityPolicy evaluateServerTrust:challenge.protectionSpace.serverTrust forDomain:challenge.protectionSpace.host]) {
+                disposition = NSURLSessionAuthChallengeUseCredential;
+                credential = [NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust];
+            } else {
+                disposition = NSURLSessionAuthChallengeCancelAuthenticationChallenge;
+            }
+        } else {
+            disposition = NSURLSessionAuthChallengePerformDefaultHandling;
+        }
+    }
+
+    if (completionHandler) {
+        completionHandler(disposition, credential);
+    }
+}
+
+- (void)URLSession:(NSURLSession *)session
+              task:(NSURLSessionTask *)task
+ needNewBodyStream:(void (^)(NSInputStream *bodyStream))completionHandler
+{
+    NSInputStream *inputStream = nil;
+
+    if (self.taskNeedNewBodyStream) {
+        inputStream = self.taskNeedNewBodyStream(session, task);
+    } else if (task.originalRequest.HTTPBodyStream && [task.originalRequest.HTTPBodyStream conformsToProtocol:@protocol(NSCopying)]) {
+        inputStream = [task.originalRequest.HTTPBodyStream copy];
+    }
+
+    if (completionHandler) {
+        completionHandler(inputStream);
+    }
+}
+
+- (void)URLSession:(NSURLSession *)session
+              task:(NSURLSessionTask *)task
+   didSendBodyData:(int64_t)bytesSent
+    totalBytesSent:(int64_t)totalBytesSent
+totalBytesExpectedToSend:(int64_t)totalBytesExpectedToSend
+{
+
+    int64_t totalUnitCount = totalBytesExpectedToSend;
+    if(totalUnitCount == NSURLSessionTransferSizeUnknown) {
+        NSString *contentLength = [task.originalRequest valueForHTTPHeaderField:@"Content-Length"];
+        if(contentLength) {
+            totalUnitCount = (int64_t) [contentLength longLongValue];
+        }
+    }
+
+    AFURLSessionManagerTaskDelegate *delegate = [self delegateForTask:task];
+    [delegate URLSession:session task:task didSendBodyData:bytesSent totalBytesSent:totalBytesSent totalBytesExpectedToSend:totalUnitCount];
+
+    if (self.taskDidSendBodyData) {
+        self.taskDidSendBodyData(session, task, bytesSent, totalBytesSent, totalUnitCount);
+    }
+}
+
+- (void)URLSession:(NSURLSession *)session
+              task:(NSURLSessionTask *)task
+didCompleteWithError:(NSError *)error
+{
+    AFURLSessionManagerTaskDelegate *delegate = [self delegateForTask:task];
+
+    // delegate may be nil when completing a task in the background
+    if (delegate) {
+        [delegate URLSession:session task:task didCompleteWithError:error];
+
+        [self removeDelegateForTask:task];
+    }
+
+    if (self.taskDidComplete) {
+        self.taskDidComplete(session, task, error);
+    }
+
+}
+
+#pragma mark - NSURLSessionDataDelegate
+
+- (void)URLSession:(NSURLSession *)session
+          dataTask:(NSURLSessionDataTask *)dataTask
+didReceiveResponse:(NSURLResponse *)response
+ completionHandler:(void (^)(NSURLSessionResponseDisposition disposition))completionHandler
+{
+    NSURLSessionResponseDisposition disposition = NSURLSessionResponseAllow;
+
+    if (self.dataTaskDidReceiveResponse) {
+        disposition = self.dataTaskDidReceiveResponse(session, dataTask, response);
+    }
+
+    if (completionHandler) {
+        completionHandler(disposition);
+    }
+}
+
+- (void)URLSession:(NSURLSession *)session
+          dataTask:(NSURLSessionDataTask *)dataTask
+didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask
+{
+    AFURLSessionManagerTaskDelegate *delegate = [self delegateForTask:dataTask];
+    if (delegate) {
+        [self removeDelegateForTask:dataTask];
+        [self setDelegate:delegate forTask:downloadTask];
+    }
+
+    if (self.dataTaskDidBecomeDownloadTask) {
+        self.dataTaskDidBecomeDownloadTask(session, dataTask, downloadTask);
+    }
+}
+
+- (void)URLSession:(NSURLSession *)session
+          dataTask:(NSURLSessionDataTask *)dataTask
+    didReceiveData:(NSData *)data
+{
+    AFURLSessionManagerTaskDelegate *delegate = [self delegateForTask:dataTask];
+    [delegate URLSession:session dataTask:dataTask didReceiveData:data];
+
+    if (self.dataTaskDidReceiveData) {
+        self.dataTaskDidReceiveData(session, dataTask, data);
+    }
+}
+
+- (void)URLSession:(NSURLSession *)session
+          dataTask:(NSURLSessionDataTask *)dataTask
+ willCacheResponse:(NSCachedURLResponse *)proposedResponse
+ completionHandler:(void (^)(NSCachedURLResponse *cachedResponse))completionHandler
+{
+    NSCachedURLResponse *cachedResponse = proposedResponse;
+
+    if (self.dataTaskWillCacheResponse) {
+        cachedResponse = self.dataTaskWillCacheResponse(session, dataTask, proposedResponse);
+    }
+
+    if (completionHandler) {
+        completionHandler(cachedResponse);
+    }
+}
+
+- (void)URLSessionDidFinishEventsForBackgroundURLSession:(NSURLSession *)session {
+    if (self.didFinishEventsForBackgroundURLSession) {
+        dispatch_async(dispatch_get_main_queue(), ^{
+            self.didFinishEventsForBackgroundURLSession(session);
+        });
+    }
+}
+
+#pragma mark - NSURLSessionDownloadDelegate
+
+- (void)URLSession:(NSURLSession *)session
+      downloadTask:(NSURLSessionDownloadTask *)downloadTask
+didFinishDownloadingToURL:(NSURL *)location
+{
+    AFURLSessionManagerTaskDelegate *delegate = [self delegateForTask:downloadTask];
+    if (self.downloadTaskDidFinishDownloading) {
+        NSURL *fileURL = self.downloadTaskDidFinishDownloading(session, downloadTask, location);
+        if (fileURL) {
+            delegate.downloadFileURL = fileURL;
+            NSError *error = nil;
+            [[NSFileManager defaultManager] moveItemAtURL:location toURL:fileURL error:&error];
+            if (error) {
+                [[NSNotificationCenter defaultCenter] postNotificationName:AFURLSessionDownloadTaskDidFailToMoveFileNotification object:downloadTask userInfo:error.userInfo];
+            }
+
+            return;
+        }
+    }
+
+    if (delegate) {
+        [delegate URLSession:session downloadTask:downloadTask didFinishDownloadingToURL:location];
+    }
+}
+
+- (void)URLSession:(NSURLSession *)session
+      downloadTask:(NSURLSessionDownloadTask *)downloadTask
+      didWriteData:(int64_t)bytesWritten
+ totalBytesWritten:(int64_t)totalBytesWritten
+totalBytesExpectedToWrite:(int64_t)totalBytesExpectedToWrite
+{
+    AFURLSessionManagerTaskDelegate *delegate = [self delegateForTask:downloadTask];
+    [delegate URLSession:session downloadTask:downloadTask didWriteData:bytesWritten totalBytesWritten:totalBytesWritten totalBytesExpectedToWrite:totalBytesExpectedToWrite];
+
+    if (self.downloadTaskDidWriteData) {
+        self.downloadTaskDidWriteData(session, downloadTask, bytesWritten, totalBytesWritten, totalBytesExpectedToWrite);
+    }
+}
+
+- (void)URLSession:(NSURLSession *)session
+      downloadTask:(NSURLSessionDownloadTask *)downloadTask
+ didResumeAtOffset:(int64_t)fileOffset
+expectedTotalBytes:(int64_t)expectedTotalBytes
+{
+    AFURLSessionManagerTaskDelegate *delegate = [self delegateForTask:downloadTask];
+    [delegate URLSession:session downloadTask:downloadTask didResumeAtOffset:fileOffset expectedTotalBytes:expectedTotalBytes];
+
+    if (self.downloadTaskDidResume) {
+        self.downloadTaskDidResume(session, downloadTask, fileOffset, expectedTotalBytes);
+    }
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+    return YES;
+}
+
+- (id)initWithCoder:(NSCoder *)decoder {
+    NSURLSessionConfiguration *configuration = [decoder decodeObjectOfClass:[NSURLSessionConfiguration class] forKey:@"sessionConfiguration"];
+
+    self = [self initWithSessionConfiguration:configuration];
+    if (!self) {
+        return nil;
+    }
+
+    return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+    [coder encodeObject:self.session.configuration forKey:@"sessionConfiguration"];
+}
+
+#pragma mark - NSCopying
+
+- (id)copyWithZone:(NSZone *)zone {
+    return [[[self class] allocWithZone:zone] initWithSessionConfiguration:self.session.configuration];
+}
+
+@end
+
+#endif

Example/Pods/AFNetworking/LICENSE

+Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

Example/Pods/AFNetworking/README.md

+<p align="center" >
+  <img src="https://raw.github.com/AFNetworking/AFNetworking/assets/afnetworking-logo.png" alt="AFNetworking" title="AFNetworking">
+</p>
+
+[![Build Status](https://travis-ci.org/AFNetworking/AFNetworking.svg)](https://travis-ci.org/AFNetworking/AFNetworking)
+
+AFNetworking is a delightful networking library for iOS and Mac OS X. It's built on top of the [Foundation URL Loading System](http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/URLLoadingSystem/URLLoadingSystem.html), extending the powerful high-level networking abstractions built into Cocoa. It has a modular architecture with well-designed, feature-rich APIs that are a joy to use.
+
+Perhaps the most important feature of all, however, is the amazing community of developers who use and contribute to AFNetworking every day. AFNetworking powers some of the most popular and critically-acclaimed apps on the iPhone, iPad, and Mac.
+
+Choose AFNetworking for your next project, or migrate over your existing projects—you'll be happy you did!
+
+## How To Get Started
+
+- [Download AFNetworking](https://github.com/AFNetworking/AFNetworking/archive/master.zip) and try out the included Mac and iPhone example apps
+- Read the ["Getting Started" guide](https://github.com/AFNetworking/AFNetworking/wiki/Getting-Started-with-AFNetworking), [FAQ](https://github.com/AFNetworking/AFNetworking/wiki/AFNetworking-FAQ), or [other articles on the Wiki](https://github.com/AFNetworking/AFNetworking/wiki)
+- Check out the [documentation](http://cocoadocs.org/docsets/AFNetworking/) for a comprehensive look at all of the APIs available in AFNetworking
+- Read the [AFNetworking 2.0 Migration Guide](https://github.com/AFNetworking/AFNetworking/wiki/AFNetworking-2.0-Migration-Guide) for an overview of the architectural changes from 1.0.
+
+## Communication
+
+- If you **need help**, use [Stack Overflow](http://stackoverflow.com/questions/tagged/afnetworking). (Tag 'afnetworking')
+- If you'd like to **ask a general question**, use [Stack Overflow](http://stackoverflow.com/questions/tagged/afnetworking).
+- If you **found a bug**, _and can provide steps to reliably reproduce it_, open an issue.
+- If you **have a feature request**, open an issue.
+- If you **want to contribute**, submit a pull request.
+
+### Installation with CocoaPods
+
+[CocoaPods](https://cocoapods.org/) is a dependency manager for Objective-C, which automates and simplifies the process of using 3rd-party libraries like AFNetworking in your projects. See the ["Getting Started" guide for more information](https://github.com/AFNetworking/AFNetworking/wiki/Getting-Started-with-AFNetworking).
+
+#### Podfile
+
+```ruby
+platform :ios, '7.0'
+pod "AFNetworking", "~> 2.0"
+```
+
+## Requirements
+
+| AFNetworking Version | Minimum iOS Target  | Minimum OS X Target  |                                   Notes                                   |
+|:--------------------:|:---------------------------:|:----------------------------:|:-------------------------------------------------------------------------:|
+|          2.x         |            iOS 6            |           OS X 10.8          | Xcode 5 is required. `NSURLSession` subspec requires iOS 7 or OS X 10.9. |
+|          [1.x](https://github.com/AFNetworking/AFNetworking/tree/1.x)         |            iOS 5            |         Mac OS X 10.7        |                                                                           |
+|        [0.10.x](https://github.com/AFNetworking/AFNetworking/tree/0.10.x)        |            iOS 4            |         Mac OS X 10.6        |                                                                           |
+
+(OS X projects must support [64-bit with modern Cocoa runtime](https://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/ObjCRuntimeGuide/Articles/ocrtVersionsPlatforms.html)).
+
+> Programming in Swift? Try [Alamofire](https://github.com/Alamofire/Alamofire) for a more conventional set of APIs.
+
+## Architecture
+
+### NSURLConnection
+
+- `AFURLConnectionOperation`
+- `AFHTTPRequestOperation`
+- `AFHTTPRequestOperationManager`
+
+### NSURLSession _(iOS 7 / Mac OS X 10.9)_
+
+- `AFURLSessionManager`
+- `AFHTTPSessionManager`
+
+### Serialization
+
+* `<AFURLRequestSerialization>`
+  - `AFHTTPRequestSerializer`
+  - `AFJSONRequestSerializer`
+  - `AFPropertyListRequestSerializer`
+* `<AFURLResponseSerialization>`
+  - `AFHTTPResponseSerializer`
+  - `AFJSONResponseSerializer`
+  - `AFXMLParserResponseSerializer`
+  - `AFXMLDocumentResponseSerializer` _(Mac OS X)_
+  - `AFPropertyListResponseSerializer`
+  - `AFImageResponseSerializer`
+  - `AFCompoundResponseSerializer`
+
+### Additional Functionality
+
+- `AFSecurityPolicy`
+- `AFNetworkReachabilityManager`
+
+## Usage
+
+### HTTP Request Operation Manager
+
+`AFHTTPRequestOperationManager` encapsulates the common patterns of communicating with a web application over HTTP, including request creation, response serialization, network reachability monitoring, and security, as well as request operation management.
+
+#### `GET` Request
+
+```objective-c
+AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
+[manager GET:@"http://example.com/resources.json" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
+    NSLog(@"JSON: %@", responseObject);
+} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
+    NSLog(@"Error: %@", error);
+}];
+```
+
+#### `POST` URL-Form-Encoded Request
+
+```objective-c
+AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
+NSDictionary *parameters = @{@"foo": @"bar"};
+[manager POST:@"http://example.com/resources.json" parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
+    NSLog(@"JSON: %@", responseObject);
+} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
+    NSLog(@"Error: %@", error);
+}];
+```
+
+#### `POST` Multi-Part Request
+
+```objective-c
+AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
+NSDictionary *parameters = @{@"foo": @"bar"};
+NSURL *filePath = [NSURL fileURLWithPath:@"file://path/to/image.png"];
+[manager POST:@"http://example.com/resources.json" parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
+    [formData appendPartWithFileURL:filePath name:@"image" error:nil];
+} success:^(AFHTTPRequestOperation *operation, id responseObject) {
+    NSLog(@"Success: %@", responseObject);
+} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
+    NSLog(@"Error: %@", error);
+}];
+```
+
+---
+
+### AFURLSessionManager
+
+`AFURLSessionManager` creates and manages an `NSURLSession` object based on a specified `NSURLSessionConfiguration` object, which conforms to `<NSURLSessionTaskDelegate>`, `<NSURLSessionDataDelegate>`, `<NSURLSessionDownloadDelegate>`, and `<NSURLSessionDelegate>`.
+
+#### Creating a Download Task
+
+```objective-c
+NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
+AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration];
+
+NSURL *URL = [NSURL URLWithString:@"http://example.com/download.zip"];
+NSURLRequest *request = [NSURLRequest requestWithURL:URL];
+
+NSURLSessionDownloadTask *downloadTask = [manager downloadTaskWithRequest:request progress:nil destination:^NSURL *(NSURL *targetPath, NSURLResponse *response) {
+    NSURL *documentsDirectoryURL = [[NSFileManager defaultManager] URLForDirectory:NSDocumentDirectory inDomain:NSUserDomainMask appropriateForURL:nil create:NO error:nil];
+    return [documentsDirectoryURL URLByAppendingPathComponent:[response suggestedFilename]];
+} completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error) {
+    NSLog(@"File downloaded to: %@", filePath);
+}];
+[downloadTask resume];
+```
+
+#### Creating an Upload Task
+
+```objective-c
+NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
+AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration];
+
+NSURL *URL = [NSURL URLWithString:@"http://example.com/upload"];
+NSURLRequest *request = [NSURLRequest requestWithURL:URL];
+
+NSURL *filePath = [NSURL fileURLWithPath:@"file://path/to/image.png"];
+NSURLSessionUploadTask *uploadTask = [manager uploadTaskWithRequest:request fromFile:filePath progress:nil completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {
+    if (error) {
+        NSLog(@"Error: %@", error);
+    } else {
+        NSLog(@"Success: %@ %@", response, responseObject);
+    }
+}];
+[uploadTask resume];
+```
+
+#### Creating an Upload Task for a Multi-Part Request, with Progress
+
+```objective-c
+NSMutableURLRequest *request = [[AFHTTPRequestSerializer serializer] multipartFormRequestWithMethod:@"POST" URLString:@"http://example.com/upload" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
+        [formData appendPartWithFileURL:[NSURL fileURLWithPath:@"file://path/to/image.jpg"] name:@"file" fileName:@"filename.jpg" mimeType:@"image/jpeg" error:nil];
+    } error:nil];
+
+AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];
+NSProgress *progress = nil;
+
+NSURLSessionUploadTask *uploadTask = [manager uploadTaskWithStreamedRequest:request progress:&progress completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {
+    if (error) {
+        NSLog(@"Error: %@", error);
+    } else {
+        NSLog(@"%@ %@", response, responseObject);
+    }
+}];
+
+[uploadTask resume];
+```
+
+#### Creating a Data Task
+
+```objective-c
+NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
+AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration];
+
+NSURL *URL = [NSURL URLWithString:@"http://example.com/upload"];
+NSURLRequest *request = [NSURLRequest requestWithURL:URL];
+
+NSURLSessionDataTask *dataTask = [manager dataTaskWithRequest:request completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {
+    if (error) {
+        NSLog(@"Error: %@", error);
+    } else {
+        NSLog(@"%@ %@", response, responseObject);
+    }
+}];
+[dataTask resume];
+```
+
+---
+
+### Request Serialization
+
+Request serializers create requests from URL strings, encoding parameters as either a query string or HTTP body.
+
+```objective-c
+NSString *URLString = @"http://example.com";
+NSDictionary *parameters = @{@"foo": @"bar", @"baz": @[@1, @2, @3]};
+```
+
+#### Query String Parameter Encoding
+
+```objective-c
+[[AFHTTPRequestSerializer serializer] requestWithMethod:@"GET" URLString:URLString parameters:parameters error:nil];
+```
+
+    GET http://example.com?foo=bar&baz[]=1&baz[]=2&baz[]=3
+
+#### URL Form Parameter Encoding
+
+```objective-c
+[[AFHTTPRequestSerializer serializer] requestWithMethod:@"POST" URLString:URLString parameters:parameters];
+```
+
+    POST http://example.com/
+    Content-Type: application/x-www-form-urlencoded
+
+    foo=bar&baz[]=1&baz[]=2&baz[]=3
+
+#### JSON Parameter Encoding
+
+```objective-c
+[[AFJSONRequestSerializer serializer] requestWithMethod:@"POST" URLString:URLString parameters:parameters];
+```
+
+    POST http://example.com/
+    Content-Type: application/json
+
+    {"foo": "bar", "baz": [1,2,3]}
+
+---
+
+### Network Reachability Manager
+
+`AFNetworkReachabilityManager` monitors the reachability of domains, and addresses for both WWAN and WiFi network interfaces.
+
+* Do not use Reachability to determine if the original request should be sent.
+	* You should try to send it.
+* You can use Reachability to determine when a request should be automatically retried.
+	* Although it may still fail, a Reachability notification that the connectivity is available is a good time to retry something.
+* Network reachability is a useful tool for determining why a request might have failed.
+	* After a network request has failed, telling the user they're offline is better than giving them a more technical but accurate error, such as "request timed out."
+
+See also [WWDC 2012 session 706, "Networking Best Practices."](https://developer.apple.com/videos/play/wwdc2012-706/).
+
+#### Shared Network Reachability
+
+```objective-c
+[[AFNetworkReachabilityManager sharedManager] setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
+    NSLog(@"Reachability: %@", AFStringFromNetworkReachabilityStatus(status));
+}];
+
+[[AFNetworkReachabilityManager sharedManager] startMonitoring];
+```
+
+#### HTTP Manager Reachability
+
+```objective-c
+NSURL *baseURL = [NSURL URLWithString:@"http://example.com/"];
+AFHTTPRequestOperationManager *manager = [[AFHTTPRequestOperationManager alloc] initWithBaseURL:baseURL];
+
+NSOperationQueue *operationQueue = manager.operationQueue;
+[manager.reachabilityManager setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
+    switch (status) {
+        case AFNetworkReachabilityStatusReachableViaWWAN:
+        case AFNetworkReachabilityStatusReachableViaWiFi:
+            [operationQueue setSuspended:NO];
+            break;
+        case AFNetworkReachabilityStatusNotReachable:
+        default:
+            [operationQueue setSuspended:YES];
+            break;
+    }
+}];
+
+[manager.reachabilityManager startMonitoring];
+```
+
+---
+
+### Security Policy
+
+`AFSecurityPolicy` evaluates server trust against pinned X.509 certificates and public keys over secure connections.
+
+Adding pinned SSL certificates to your app helps prevent man-in-the-middle attacks and other vulnerabilities. Applications dealing with sensitive customer data or financial information are strongly encouraged to route all communication over an HTTPS connection with SSL pinning configured and enabled.
+
+#### Allowing Invalid SSL Certificates
+
+```objective-c
+AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
+manager.securityPolicy.allowInvalidCertificates = YES; // not recommended for production
+```
+
+---
+
+### AFHTTPRequestOperation
+
+`AFHTTPRequestOperation` is a subclass of `AFURLConnectionOperation` for requests using the HTTP or HTTPS protocols. It encapsulates the concept of acceptable status codes and content types, which determine the success or failure of a request.
+
+Although `AFHTTPRequestOperationManager` is usually the best way to go about making requests, `AFHTTPRequestOperation` can be used by itself.
+
+#### `GET` with `AFHTTPRequestOperation`
+
+```objective-c
+NSURL *URL = [NSURL URLWithString:@"http://example.com/resources/123.json"];
+NSURLRequest *request = [NSURLRequest requestWithURL:URL];
+AFHTTPRequestOperation *op = [[AFHTTPRequestOperation alloc] initWithRequest:request];
+op.responseSerializer = [AFJSONResponseSerializer serializer];
+[op setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
+    NSLog(@"JSON: %@", responseObject);
+} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
+    NSLog(@"Error: %@", error);
+}];
+[[NSOperationQueue mainQueue] addOperation:op];
+```
+
+#### Batch of Operations
+
+```objective-c
+NSMutableArray *mutableOperations = [NSMutableArray array];
+for (NSURL *fileURL in filesToUpload) {
+    NSURLRequest *request = [[AFHTTPRequestSerializer serializer] multipartFormRequestWithMethod:@"POST" URLString:@"http://example.com/upload" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
+        [formData appendPartWithFileURL:fileURL name:@"images[]" error:nil];
+    }];
+
+    AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
+
+    [mutableOperations addObject:operation];
+}
+
+NSArray *operations = [AFURLConnectionOperation batchOfRequestOperations:@[...] progressBlock:^(NSUInteger numberOfFinishedOperations, NSUInteger totalNumberOfOperations) {
+    NSLog(@"%lu of %lu complete", numberOfFinishedOperations, totalNumberOfOperations);
+} completionBlock:^(NSArray *operations) {
+    NSLog(@"All operations in batch complete");
+}];
+[[NSOperationQueue mainQueue] addOperations:operations waitUntilFinished:NO];
+```
+
+## Unit Tests
+
+AFNetworking includes a suite of unit tests within the Tests subdirectory. In order to run the unit tests, you must install the testing dependencies via [CocoaPods](https://cocoapods.org/):
+
+    $ cd Tests
+    $ pod install
+
+Once testing dependencies are installed, you can execute the test suite via the 'iOS Tests' and 'OS X Tests' schemes within Xcode.
+
+### Running Tests from the Command Line
+
+Tests can also be run from the command line or within a continuous integration environment. The [`xcpretty`](https://github.com/supermarin/xcpretty) utility needs to be installed before running the tests from the command line:
+
+    $ gem install xcpretty
+
+Once `xcpretty` is installed, you can execute the suite via `rake test`.
+
+## Credits
+
+AFNetworking is owned and maintained by the [Alamofire Software Foundation](http://alamofire.org).
+
+AFNetworking was originally created by [Scott Raymond](https://github.com/sco/) and [Mattt Thompson](https://github.com/mattt/) in the development of [Gowalla for iPhone](https://en.wikipedia.org/wiki/Gowalla).
+
+AFNetworking's logo was designed by [Alan Defibaugh](http://www.alandefibaugh.com/).
+
+And most of all, thanks to AFNetworking's [growing list of contributors](https://github.com/AFNetworking/AFNetworking/graphs/contributors).
+
+### Security Disclosure
+
+If you believe you have identified a security vulnerability with AFNetworking, you should report it as soon as possible via email to security@alamofire.org. Please do not post it to a public issue tracker.
+
+## License
+
+AFNetworking is released under the MIT license. See LICENSE for details.

Example/Pods/AFNetworking/UIKit+AFNetworking/AFNetworkActivityIndicatorManager.h

+// AFNetworkActivityIndicatorManager.h
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+
+#import <Availability.h>
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ `AFNetworkActivityIndicatorManager` manages the state of the network activity indicator in the status bar. When enabled, it will listen for notifications indicating that a network request operation has started or finished, and start or stop animating the indicator accordingly. The number of active requests is incremented and decremented much like a stack or a semaphore, and the activity indicator will animate so long as that number is greater than zero.
+
+ You should enable the shared instance of `AFNetworkActivityIndicatorManager` when your application finishes launching. In `AppDelegate application:didFinishLaunchingWithOptions:` you can do so with the following code:
+
+    [[AFNetworkActivityIndicatorManager sharedManager] setEnabled:YES];
+
+ By setting `enabled` to `YES` for `sharedManager`, the network activity indicator will show and hide automatically as requests start and finish. You should not ever need to call `incrementActivityCount` or `decrementActivityCount` yourself.
+
+ See the Apple Human Interface Guidelines section about the Network Activity Indicator for more information:
+ http://developer.apple.com/library/iOS/#documentation/UserExperience/Conceptual/MobileHIG/UIElementGuidelines/UIElementGuidelines.html#//apple_ref/doc/uid/TP40006556-CH13-SW44
+ */
+NS_EXTENSION_UNAVAILABLE_IOS("Use view controller based solutions where appropriate instead.")
+@interface AFNetworkActivityIndicatorManager : NSObject
+
+/**
+ A Boolean value indicating whether the manager is enabled.
+
+ If YES, the manager will change status bar network activity indicator according to network operation notifications it receives. The default value is NO.
+ */
+@property (nonatomic, assign, getter = isEnabled) BOOL enabled;
+
+/**
+ A Boolean value indicating whether the network activity indicator is currently displayed in the status bar.
+ */
+@property (readonly, nonatomic, assign) BOOL isNetworkActivityIndicatorVisible;
+
+/**
+ Returns the shared network activity indicator manager object for the system.
+
+ @return The systemwide network activity indicator manager.
+ */
++ (instancetype)sharedManager;
+
+/**
+ Increments the number of active network requests. If this number was zero before incrementing, this will start animating the status bar network activity indicator.
+ */
+- (void)incrementActivityCount;
+
+/**
+ Decrements the number of active network requests. If this number becomes zero after decrementing, this will stop animating the status bar network activity indicator.
+ */
+- (void)decrementActivityCount;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif

Example/Pods/AFNetworking/UIKit+AFNetworking/AFNetworkActivityIndicatorManager.m

+// AFNetworkActivityIndicatorManager.m
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "AFNetworkActivityIndicatorManager.h"
+
+#if defined(__IPHONE_OS_VERSION_MAX_ALLOWED)
+
+#import "AFHTTPRequestOperation.h"
+
+#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 70000
+#import "AFURLSessionManager.h"
+#endif
+
+static NSTimeInterval const kAFNetworkActivityIndicatorInvisibilityDelay = 0.17;
+
+static NSURLRequest * AFNetworkRequestFromNotification(NSNotification *notification) {
+    if ([[notification object] isKindOfClass:[AFURLConnectionOperation class]]) {
+        return [(AFURLConnectionOperation *)[notification object] request];
+    }
+
+#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 70000
+    if ([[notification object] respondsToSelector:@selector(originalRequest)]) {
+        return [(NSURLSessionTask *)[notification object] originalRequest];
+    }
+#endif
+
+    return nil;
+}
+
+@interface AFNetworkActivityIndicatorManager ()
+@property (readwrite, nonatomic, assign) NSInteger activityCount;
+@property (readwrite, nonatomic, strong) NSTimer *activityIndicatorVisibilityTimer;
+@property (readonly, nonatomic, getter = isNetworkActivityIndicatorVisible) BOOL networkActivityIndicatorVisible;
+
+- (void)updateNetworkActivityIndicatorVisibility;
+- (void)updateNetworkActivityIndicatorVisibilityDelayed;
+@end
+
+@implementation AFNetworkActivityIndicatorManager
+@dynamic networkActivityIndicatorVisible;
+
++ (instancetype)sharedManager {
+    static AFNetworkActivityIndicatorManager *_sharedManager = nil;
+    static dispatch_once_t oncePredicate;
+    dispatch_once(&oncePredicate, ^{
+        _sharedManager = [[self alloc] init];
+    });
+
+    return _sharedManager;
+}
+
++ (NSSet *)keyPathsForValuesAffectingIsNetworkActivityIndicatorVisible {
+    return [NSSet setWithObject:@"activityCount"];
+}
+
+- (id)init {
+    self = [super init];
+    if (!self) {
+        return nil;
+    }
+
+    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(networkRequestDidStart:) name:AFNetworkingOperationDidStartNotification object:nil];
+    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(networkRequestDidFinish:) name:AFNetworkingOperationDidFinishNotification object:nil];
+
+#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 70000
+    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(networkRequestDidStart:) name:AFNetworkingTaskDidResumeNotification object:nil];
+    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(networkRequestDidFinish:) name:AFNetworkingTaskDidSuspendNotification object:nil];
+    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(networkRequestDidFinish:) name:AFNetworkingTaskDidCompleteNotification object:nil];
+#endif
+
+    return self;
+}
+
+- (void)dealloc {
+    [[NSNotificationCenter defaultCenter] removeObserver:self];
+
+    [_activityIndicatorVisibilityTimer invalidate];
+}
+
+- (void)updateNetworkActivityIndicatorVisibilityDelayed {
+    if (self.enabled) {
+        // Delay hiding of activity indicator for a short interval, to avoid flickering
+        if (![self isNetworkActivityIndicatorVisible]) {
+            [self.activityIndicatorVisibilityTimer invalidate];
+            self.activityIndicatorVisibilityTimer = [NSTimer timerWithTimeInterval:kAFNetworkActivityIndicatorInvisibilityDelay target:self selector:@selector(updateNetworkActivityIndicatorVisibility) userInfo:nil repeats:NO];
+            [[NSRunLoop mainRunLoop] addTimer:self.activityIndicatorVisibilityTimer forMode:NSRunLoopCommonModes];
+        } else {
+            [self performSelectorOnMainThread:@selector(updateNetworkActivityIndicatorVisibility) withObject:nil waitUntilDone:NO modes:@[NSRunLoopCommonModes]];
+        }
+    }
+}
+
+- (BOOL)isNetworkActivityIndicatorVisible {
+    return self.activityCount > 0;
+}
+
+- (void)updateNetworkActivityIndicatorVisibility {
+    [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:[self isNetworkActivityIndicatorVisible]];
+}
+
+- (void)setActivityCount:(NSInteger)activityCount {
+	@synchronized(self) {
+		_activityCount = activityCount;
+	}
+
+    dispatch_async(dispatch_get_main_queue(), ^{
+        [self updateNetworkActivityIndicatorVisibilityDelayed];
+    });
+}
+
+- (void)incrementActivityCount {
+    [self willChangeValueForKey:@"activityCount"];
+	@synchronized(self) {
+		_activityCount++;
+	}
+    [self didChangeValueForKey:@"activityCount"];
+
+    dispatch_async(dispatch_get_main_queue(), ^{
+        [self updateNetworkActivityIndicatorVisibilityDelayed];
+    });
+}
+
+- (void)decrementActivityCount {
+    [self willChangeValueForKey:@"activityCount"];
+	@synchronized(self) {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+		_activityCount = MAX(_activityCount - 1, 0);
+#pragma clang diagnostic pop
+	}
+    [self didChangeValueForKey:@"activityCount"];
+
+    dispatch_async(dispatch_get_main_queue(), ^{
+        [self updateNetworkActivityIndicatorVisibilityDelayed];
+    });
+}
+
+- (void)networkRequestDidStart:(NSNotification *)notification {
+    if ([AFNetworkRequestFromNotification(notification) URL]) {
+        [self incrementActivityCount];
+    }
+}
+
+- (void)networkRequestDidFinish:(NSNotification *)notification {
+    if ([AFNetworkRequestFromNotification(notification) URL]) {
+        [self decrementActivityCount];
+    }
+}
+
+@end
+
+#endif

Example/Pods/AFNetworking/UIKit+AFNetworking/UIActivityIndicatorView+AFNetworking.h

+// UIActivityIndicatorView+AFNetworking.h
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+
+#import <Availability.h>
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+
+#import <UIKit/UIKit.h>
+
+@class AFURLConnectionOperation;
+
+/**
+ This category adds methods to the UIKit framework's `UIActivityIndicatorView` class. The methods in this category provide support for automatically starting and stopping animation depending on the loading state of a request operation or session task.
+ */
+@interface UIActivityIndicatorView (AFNetworking)
+
+///----------------------------------
+/// @name Animating for Session Tasks
+///----------------------------------
+
+/**
+ Binds the animating state to the state of the specified task.
+
+ @param task The task. If `nil`, automatic updating from any previously specified operation will be disabled.
+ */
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000
+- (void)setAnimatingWithStateOfTask:(nullable NSURLSessionTask *)task;
+#endif
+
+///---------------------------------------
+/// @name Animating for Request Operations
+///---------------------------------------
+
+/**
+ Binds the animating state to the execution state of the specified operation.
+
+ @param operation The operation. If `nil`, automatic updating from any previously specified operation will be disabled.
+ */
+- (void)setAnimatingWithStateOfOperation:(nullable AFURLConnectionOperation *)operation;
+
+@end
+
+#endif

Example/Pods/AFNetworking/UIKit+AFNetworking/UIActivityIndicatorView+AFNetworking.m

+// UIActivityIndicatorView+AFNetworking.m
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "UIActivityIndicatorView+AFNetworking.h"
+#import <objc/runtime.h>
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+
+#import "AFHTTPRequestOperation.h"
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000
+#import "AFURLSessionManager.h"
+#endif
+
+@interface AFActivityIndicatorViewNotificationObserver : NSObject
+@property (readonly, nonatomic, weak) UIActivityIndicatorView *activityIndicatorView;
+- (instancetype)initWithActivityIndicatorView:(UIActivityIndicatorView *)activityIndicatorView;
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000
+- (void)setAnimatingWithStateOfTask:(NSURLSessionTask *)task;
+#endif
+- (void)setAnimatingWithStateOfOperation:(AFURLConnectionOperation *)operation;
+
+@end
+
+@implementation UIActivityIndicatorView (AFNetworking)
+
+- (AFActivityIndicatorViewNotificationObserver *)af_notificationObserver {
+    AFActivityIndicatorViewNotificationObserver *notificationObserver = objc_getAssociatedObject(self, @selector(af_notificationObserver));
+    if (notificationObserver == nil) {
+        notificationObserver = [[AFActivityIndicatorViewNotificationObserver alloc] initWithActivityIndicatorView:self];
+        objc_setAssociatedObject(self, @selector(af_notificationObserver), notificationObserver, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+    }
+    return notificationObserver;
+}
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000
+- (void)setAnimatingWithStateOfTask:(NSURLSessionTask *)task {
+    [[self af_notificationObserver] setAnimatingWithStateOfTask:task];
+}
+#endif
+
+- (void)setAnimatingWithStateOfOperation:(AFURLConnectionOperation *)operation {
+    [[self af_notificationObserver] setAnimatingWithStateOfOperation:operation];
+}
+
+@end
+
+@implementation AFActivityIndicatorViewNotificationObserver
+
+- (instancetype)initWithActivityIndicatorView:(UIActivityIndicatorView *)activityIndicatorView
+{
+    self = [super init];
+    if (self) {
+        _activityIndicatorView = activityIndicatorView;
+    }
+    return self;
+}
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000
+- (void)setAnimatingWithStateOfTask:(NSURLSessionTask *)task {
+    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+
+    [notificationCenter removeObserver:self name:AFNetworkingTaskDidResumeNotification object:nil];
+    [notificationCenter removeObserver:self name:AFNetworkingTaskDidSuspendNotification object:nil];
+    [notificationCenter removeObserver:self name:AFNetworkingTaskDidCompleteNotification object:nil];
+    
+    if (task) {
+        if (task.state != NSURLSessionTaskStateCompleted) {
+            
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wreceiver-is-weak"
+#pragma clang diagnostic ignored "-Warc-repeated-use-of-weak"
+            if (task.state == NSURLSessionTaskStateRunning) {
+                [self.activityIndicatorView startAnimating];
+            } else {
+                [self.activityIndicatorView stopAnimating];
+            }
+#pragma clang diagnostic pop
+
+            [notificationCenter addObserver:self selector:@selector(af_startAnimating) name:AFNetworkingTaskDidResumeNotification object:task];
+            [notificationCenter addObserver:self selector:@selector(af_stopAnimating) name:AFNetworkingTaskDidCompleteNotification object:task];
+            [notificationCenter addObserver:self selector:@selector(af_stopAnimating) name:AFNetworkingTaskDidSuspendNotification object:task];
+        }
+    }
+}
+#endif
+
+#pragma mark -
+
+- (void)setAnimatingWithStateOfOperation:(AFURLConnectionOperation *)operation {
+    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+
+    [notificationCenter removeObserver:self name:AFNetworkingOperationDidStartNotification object:nil];
+    [notificationCenter removeObserver:self name:AFNetworkingOperationDidFinishNotification object:nil];
+
+    if (operation) {
+        if (![operation isFinished]) {
+            
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wreceiver-is-weak"
+#pragma clang diagnostic ignored "-Warc-repeated-use-of-weak"
+            if ([operation isExecuting]) {
+                [self.activityIndicatorView startAnimating];
+            } else {
+                [self.activityIndicatorView stopAnimating];
+            }
+#pragma clang diagnostic pop
+
+            [notificationCenter addObserver:self selector:@selector(af_startAnimating) name:AFNetworkingOperationDidStartNotification object:operation];
+            [notificationCenter addObserver:self selector:@selector(af_stopAnimating) name:AFNetworkingOperationDidFinishNotification object:operation];
+        }
+    }
+}
+
+#pragma mark -
+
+- (void)af_startAnimating {
+    dispatch_async(dispatch_get_main_queue(), ^{
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wreceiver-is-weak"
+        [self.activityIndicatorView startAnimating];
+#pragma clang diagnostic pop
+    });
+}
+
+- (void)af_stopAnimating {
+    dispatch_async(dispatch_get_main_queue(), ^{
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wreceiver-is-weak"
+        [self.activityIndicatorView stopAnimating];
+#pragma clang diagnostic pop
+    });
+}
+
+#pragma mark -
+
+- (void)dealloc {
+    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000
+    [notificationCenter removeObserver:self name:AFNetworkingTaskDidCompleteNotification object:nil];
+    [notificationCenter removeObserver:self name:AFNetworkingTaskDidResumeNotification object:nil];
+    [notificationCenter removeObserver:self name:AFNetworkingTaskDidSuspendNotification object:nil];
+#endif
+    
+    [notificationCenter removeObserver:self name:AFNetworkingOperationDidStartNotification object:nil];
+    [notificationCenter removeObserver:self name:AFNetworkingOperationDidFinishNotification object:nil];
+}
+
+@end
+
+#endif

Example/Pods/AFNetworking/UIKit+AFNetworking/UIAlertView+AFNetworking.h

+// UIAlertView+AFNetworking.h
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+
+#import <Availability.h>
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@class AFURLConnectionOperation;
+
+/**
+ This category adds methods to the UIKit framework's `UIAlertView` class. The methods in this category provide support for automatically showing an alert if a session task or request operation finishes with an error. Alert title and message are filled from the corresponding `localizedDescription` & `localizedRecoverySuggestion` or `localizedFailureReason` of the error.
+ */
+@interface UIAlertView (AFNetworking)
+
+///-------------------------------------
+/// @name Showing Alert for Session Task
+///-------------------------------------
+
+/**
+ Shows an alert view with the error of the specified session task, if any.
+
+ @param task The session task.
+ @param delegate The alert view delegate.
+ */
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000
++ (void)showAlertViewForTaskWithErrorOnCompletion:(NSURLSessionTask *)task
+                                         delegate:(nullable id)delegate NS_EXTENSION_UNAVAILABLE_IOS("Not available in app extensions.");
+#endif
+
+/**
+ Shows an alert view with the error of the specified session task, if any, with a custom cancel button title and other button titles.
+
+ @param task The session task.
+ @param delegate The alert view delegate.
+ @param cancelButtonTitle The title of the cancel button or nil if there is no cancel button. Using this argument is equivalent to setting the cancel button index to the value returned by invoking addButtonWithTitle: specifying this title.
+ @param otherButtonTitles The title of another button. Using this argument is equivalent to invoking addButtonWithTitle: with this title to add more buttons. Too many buttons can cause the alert view to scroll. For guidelines on the best ways to use an alert in an app, see "Temporary Views". Titles of additional buttons to add to the receiver, terminated with `nil`.
+ */
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000
++ (void)showAlertViewForTaskWithErrorOnCompletion:(NSURLSessionTask *)task
+                                         delegate:(nullable id)delegate
+                                cancelButtonTitle:(nullable NSString *)cancelButtonTitle
+                                otherButtonTitles:(nullable NSString *)otherButtonTitles, ... NS_REQUIRES_NIL_TERMINATION NS_EXTENSION_UNAVAILABLE_IOS("Not available in app extensions.");
+#endif
+
+///------------------------------------------
+/// @name Showing Alert for Request Operation
+///------------------------------------------
+
+/**
+ Shows an alert view with the error of the specified request operation, if any.
+
+ @param operation The request operation.
+ @param delegate The alert view delegate.
+ */
++ (void)showAlertViewForRequestOperationWithErrorOnCompletion:(AFURLConnectionOperation *)operation
+                                                     delegate:(nullable id)delegate NS_EXTENSION_UNAVAILABLE_IOS("Not available in app extensions.");
+
+/**
+ Shows an alert view with the error of the specified request operation, if any, with a custom cancel button title and other button titles.
+
+ @param operation The request operation.
+ @param delegate The alert view delegate.
+ @param cancelButtonTitle The title of the cancel button or nil if there is no cancel button. Using this argument is equivalent to setting the cancel button index to the value returned by invoking addButtonWithTitle: specifying this title.
+ @param otherButtonTitles The title of another button. Using this argument is equivalent to invoking addButtonWithTitle: with this title to add more buttons. Too many buttons can cause the alert view to scroll. For guidelines on the best ways to use an alert in an app, see "Temporary Views". Titles of additional buttons to add to the receiver, terminated with `nil`.
+ */
++ (void)showAlertViewForRequestOperationWithErrorOnCompletion:(AFURLConnectionOperation *)operation
+                                                     delegate:(nullable id)delegate
+                                            cancelButtonTitle:(nullable NSString *)cancelButtonTitle
+                                            otherButtonTitles:(nullable NSString *)otherButtonTitles, ... NS_REQUIRES_NIL_TERMINATION NS_EXTENSION_UNAVAILABLE_IOS("Not available in app extensions.");
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif

Example/Pods/AFNetworking/UIKit+AFNetworking/UIAlertView+AFNetworking.m

+// UIAlertView+AFNetworking.m
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "UIAlertView+AFNetworking.h"
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+
+#import "AFURLConnectionOperation.h"
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000
+#import "AFURLSessionManager.h"
+#endif
+
+static void AFGetAlertViewTitleAndMessageFromError(NSError *error, NSString * __autoreleasing *title, NSString * __autoreleasing *message) {
+    if (error.localizedDescription && (error.localizedRecoverySuggestion || error.localizedFailureReason)) {
+        *title = error.localizedDescription;
+
+        if (error.localizedRecoverySuggestion) {
+            *message = error.localizedRecoverySuggestion;
+        } else {
+            *message = error.localizedFailureReason;
+        }
+    } else if (error.localizedDescription) {
+        *title = NSLocalizedStringFromTable(@"Error", @"AFNetworking", @"Fallback Error Description");
+        *message = error.localizedDescription;
+    } else {
+        *title = NSLocalizedStringFromTable(@"Error", @"AFNetworking", @"Fallback Error Description");
+        *message = [NSString stringWithFormat:NSLocalizedStringFromTable(@"%@ Error: %ld", @"AFNetworking", @"Fallback Error Failure Reason Format"), error.domain, (long)error.code];
+    }
+}
+
+@implementation UIAlertView (AFNetworking)
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000
++ (void)showAlertViewForTaskWithErrorOnCompletion:(NSURLSessionTask *)task
+                                         delegate:(id)delegate
+{
+    [self showAlertViewForTaskWithErrorOnCompletion:task delegate:delegate cancelButtonTitle:NSLocalizedStringFromTable(@"Dismiss", @"AFNetworking", @"UIAlertView Cancel Button Title") otherButtonTitles:nil, nil];
+}
+
++ (void)showAlertViewForTaskWithErrorOnCompletion:(NSURLSessionTask *)task
+                                         delegate:(id)delegate
+                                cancelButtonTitle:(NSString *)cancelButtonTitle
+                                otherButtonTitles:(NSString *)otherButtonTitles, ... NS_REQUIRES_NIL_TERMINATION
+{
+    NSMutableArray *mutableOtherTitles = [NSMutableArray array];
+    va_list otherButtonTitleList;
+    va_start(otherButtonTitleList, otherButtonTitles);
+    {
+        for (NSString *otherButtonTitle = otherButtonTitles; otherButtonTitle != nil; otherButtonTitle = va_arg(otherButtonTitleList, NSString *)) {
+            [mutableOtherTitles addObject:otherButtonTitle];
+        }
+    }
+    va_end(otherButtonTitleList);
+
+    __block __weak id<NSObject> observer = [[NSNotificationCenter defaultCenter] addObserverForName:AFNetworkingTaskDidCompleteNotification object:task queue:[NSOperationQueue mainQueue] usingBlock:^(NSNotification *notification) {
+        NSError *error = notification.userInfo[AFNetworkingTaskDidCompleteErrorKey];
+        if (error) {
+            NSString *title, *message;
+            AFGetAlertViewTitleAndMessageFromError(error, &title, &message);
+
+            UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:nil message:nil delegate:delegate cancelButtonTitle:cancelButtonTitle otherButtonTitles:nil, nil];
+            for (NSString *otherButtonTitle in mutableOtherTitles) {
+                [alertView addButtonWithTitle:otherButtonTitle];
+            }
+            [alertView setTitle:title];
+            [alertView setMessage:message];
+            [alertView show];
+        }
+
+        [[NSNotificationCenter defaultCenter] removeObserver:observer];
+    }];
+}
+#endif
+
+#pragma mark -
+
++ (void)showAlertViewForRequestOperationWithErrorOnCompletion:(AFURLConnectionOperation *)operation
+                                                     delegate:(id)delegate
+{
+    [self showAlertViewForRequestOperationWithErrorOnCompletion:operation delegate:delegate cancelButtonTitle:NSLocalizedStringFromTable(@"Dismiss", @"AFNetworking", @"UIAlertView Cancel Button Title") otherButtonTitles:nil, nil];
+}
+
++ (void)showAlertViewForRequestOperationWithErrorOnCompletion:(AFURLConnectionOperation *)operation
+                                                     delegate:(id)delegate
+                                            cancelButtonTitle:(NSString *)cancelButtonTitle
+                                            otherButtonTitles:(NSString *)otherButtonTitles, ... NS_REQUIRES_NIL_TERMINATION
+{
+    NSMutableArray *mutableOtherTitles = [NSMutableArray array];
+    va_list otherButtonTitleList;
+    va_start(otherButtonTitleList, otherButtonTitles);
+    {
+        for (NSString *otherButtonTitle = otherButtonTitles; otherButtonTitle != nil; otherButtonTitle = va_arg(otherButtonTitleList, NSString *)) {
+            [mutableOtherTitles addObject:otherButtonTitle];
+        }
+    }
+    va_end(otherButtonTitleList);
+
+    __block __weak id<NSObject> observer = [[NSNotificationCenter defaultCenter] addObserverForName:AFNetworkingOperationDidFinishNotification object:operation queue:[NSOperationQueue mainQueue] usingBlock:^(NSNotification *notification) {
+
+        if (notification.object && [notification.object isKindOfClass:[AFURLConnectionOperation class]]) {
+            NSError *error = [(AFURLConnectionOperation *)notification.object error];
+            if (error) {
+                NSString *title, *message;
+                AFGetAlertViewTitleAndMessageFromError(error, &title, &message);
+
+                UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:nil message:nil delegate:delegate cancelButtonTitle:cancelButtonTitle otherButtonTitles:nil, nil];
+                for (NSString *otherButtonTitle in mutableOtherTitles) {
+                    [alertView addButtonWithTitle:otherButtonTitle];
+                }
+                [alertView setTitle:title];
+                [alertView setMessage:message];
+                [alertView show];
+            }
+        }
+
+        [[NSNotificationCenter defaultCenter] removeObserver:observer];
+    }];
+}
+
+@end
+
+#endif

Example/Pods/AFNetworking/UIKit+AFNetworking/UIButton+AFNetworking.h

+// UIButton+AFNetworking.h
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+
+#import <Availability.h>
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@protocol AFURLResponseSerialization, AFImageCache;
+
+/**
+ This category adds methods to the UIKit framework's `UIButton` class. The methods in this category provide support for loading remote images and background images asynchronously from a URL.
+
+ @warning Compound values for control `state` (such as `UIControlStateHighlighted | UIControlStateDisabled`) are unsupported.
+ */
+@interface UIButton (AFNetworking)
+
+///----------------------------
+/// @name Accessing Image Cache
+///----------------------------
+
+/**
+ The image cache used to improve image loading performance on scroll views. By default, `UIButton` will use the `sharedImageCache` of `UIImageView`.
+ */
++ (id <AFImageCache>)sharedImageCache;
+
+/**
+ Set the cache used for image loading.
+
+ @param imageCache The image cache.
+ */
++ (void)setSharedImageCache:(__nullable id <AFImageCache>)imageCache;
+
+///------------------------------------
+/// @name Accessing Response Serializer
+///------------------------------------
+
+/**
+ The response serializer used to create an image representation from the server response and response data. By default, this is an instance of `AFImageResponseSerializer`.
+
+ @discussion Subclasses of `AFImageResponseSerializer` could be used to perform post-processing, such as color correction, face detection, or other effects. See https://github.com/AFNetworking/AFCoreImageSerializer
+ */
+@property (nonatomic, strong) id <AFURLResponseSerialization> imageResponseSerializer;
+
+///--------------------
+/// @name Setting Image
+///--------------------
+
+/**
+ Asynchronously downloads an image from the specified URL, and sets it as the image for the specified state once the request is finished. Any previous image request for the receiver will be cancelled.
+
+  If the image is cached locally, the image is set immediately, otherwise the specified placeholder image will be set immediately, and then the remote image will be set once the request is finished.
+
+ @param state The control state.
+ @param url The URL used for the image request.
+ */
+- (void)setImageForState:(UIControlState)state
+                 withURL:(NSURL *)url;
+
+/**
+ Asynchronously downloads an image from the specified URL, and sets it as the image for the specified state once the request is finished. Any previous image request for the receiver will be cancelled.
+
+ If the image is cached locally, the image is set immediately, otherwise the specified placeholder image will be set immediately, and then the remote image will be set once the request is finished.
+
+ @param state The control state.
+ @param url The URL used for the image request.
+ @param placeholderImage The image to be set initially, until the image request finishes. If `nil`, the button will not change its image until the image request finishes.
+ */
+- (void)setImageForState:(UIControlState)state
+                 withURL:(NSURL *)url
+        placeholderImage:(nullable UIImage *)placeholderImage;
+
+/**
+ Asynchronously downloads an image from the specified URL request, and sets it as the image for the specified state once the request is finished. Any previous image request for the receiver will be cancelled.
+
+ If the image is cached locally, the image is set immediately, otherwise the specified placeholder image will be set immediately, and then the remote image will be set once the request is finished.
+
+ If a success block is specified, it is the responsibility of the block to set the image of the button before returning. If no success block is specified, the default behavior of setting the image with `setImage:forState:` is applied.
+
+ @param state The control state.
+ @param urlRequest The URL request used for the image request.
+ @param placeholderImage The image to be set initially, until the image request finishes. If `nil`, the button will not change its image until the image request finishes.
+ @param success A block to be executed when the image request operation finishes successfully. This block has no return value and takes two arguments: the server response and the image. If the image was returned from cache, the response parameter will be `nil`.
+ @param failure A block object to be executed when the image request operation finishes unsuccessfully, or that finishes successfully. This block has no return value and takes a single argument: the error that occurred.
+ */
+- (void)setImageForState:(UIControlState)state
+          withURLRequest:(NSURLRequest *)urlRequest
+        placeholderImage:(nullable UIImage *)placeholderImage
+                 success:(nullable void (^)(NSURLRequest *request, NSHTTPURLResponse * __nullable response, UIImage *image))success
+                 failure:(nullable void (^)(NSError *error))failure;
+
+
+///-------------------------------
+/// @name Setting Background Image
+///-------------------------------
+
+/**
+ Asynchronously downloads an image from the specified URL, and sets it as the background image for the specified state once the request is finished. Any previous background image request for the receiver will be cancelled.
+
+ If the background image is cached locally, the background image is set immediately, otherwise the specified placeholder background image will be set immediately, and then the remote background image will be set once the request is finished.
+
+ @param state The control state.
+ @param url The URL used for the background image request.
+ */
+- (void)setBackgroundImageForState:(UIControlState)state
+                           withURL:(NSURL *)url;
+
+/**
+ Asynchronously downloads an image from the specified URL, and sets it as the background image for the specified state once the request is finished. Any previous image request for the receiver will be cancelled.
+
+ If the image is cached locally, the image is set immediately, otherwise the specified placeholder image will be set immediately, and then the remote image will be set once the request is finished.
+
+ @param state The control state.
+ @param url The URL used for the background image request.
+ @param placeholderImage The background image to be set initially, until the background image request finishes. If `nil`, the button will not change its background image until the background image request finishes.
+ */
+- (void)setBackgroundImageForState:(UIControlState)state
+                           withURL:(NSURL *)url
+                  placeholderImage:(nullable UIImage *)placeholderImage;
+
+/**
+ Asynchronously downloads an image from the specified URL request, and sets it as the image for the specified state once the request is finished. Any previous image request for the receiver will be cancelled.
+
+ If the image is cached locally, the image is set immediately, otherwise the specified placeholder image will be set immediately, and then the remote image will be set once the request is finished.
+
+ If a success block is specified, it is the responsibility of the block to set the image of the button before returning. If no success block is specified, the default behavior of setting the image with `setBackgroundImage:forState:` is applied.
+
+ @param state The control state.
+ @param urlRequest The URL request used for the image request.
+ @param placeholderImage The background image to be set initially, until the background image request finishes. If `nil`, the button will not change its background image until the background image request finishes.
+ @param success A block to be executed when the image request operation finishes successfully. This block has no return value and takes two arguments: the server response and the image. If the image was returned from cache, the response parameter will be `nil`.
+ @param failure A block object to be executed when the image request operation finishes unsuccessfully, or that finishes successfully. This block has no return value and takes a single argument: the error that occurred.
+ */
+- (void)setBackgroundImageForState:(UIControlState)state
+                    withURLRequest:(NSURLRequest *)urlRequest
+                  placeholderImage:(nullable UIImage *)placeholderImage
+                           success:(nullable void (^)(NSURLRequest *request, NSHTTPURLResponse * __nullable response, UIImage *image))success
+                           failure:(nullable void (^)(NSError *error))failure;
+
+
+///------------------------------
+/// @name Canceling Image Loading
+///------------------------------
+
+/**
+ Cancels any executing image operation for the specified control state of the receiver, if one exists.
+
+ @param state The control state.
+ */
+- (void)cancelImageRequestOperationForState:(UIControlState)state;
+
+/**
+ Cancels any executing background image operation for the specified control state of the receiver, if one exists.
+
+ @param state The control state.
+ */
+- (void)cancelBackgroundImageRequestOperationForState:(UIControlState)state;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif

Example/Pods/AFNetworking/UIKit+AFNetworking/UIButton+AFNetworking.m

+// UIButton+AFNetworking.m
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "UIButton+AFNetworking.h"
+
+#import <objc/runtime.h>
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+
+#import "AFURLResponseSerialization.h"
+#import "AFHTTPRequestOperation.h"
+
+#import "UIImageView+AFNetworking.h"
+
+@interface UIButton (_AFNetworking)
+@end
+
+@implementation UIButton (_AFNetworking)
+
++ (NSOperationQueue *)af_sharedImageRequestOperationQueue {
+    static NSOperationQueue *_af_sharedImageRequestOperationQueue = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        _af_sharedImageRequestOperationQueue = [[NSOperationQueue alloc] init];
+        _af_sharedImageRequestOperationQueue.maxConcurrentOperationCount = NSOperationQueueDefaultMaxConcurrentOperationCount;
+    });
+
+    return _af_sharedImageRequestOperationQueue;
+}
+
+#pragma mark -
+
+static char AFImageRequestOperationNormal;
+static char AFImageRequestOperationHighlighted;
+static char AFImageRequestOperationSelected;
+static char AFImageRequestOperationDisabled;
+
+static const char * af_imageRequestOperationKeyForState(UIControlState state) {
+    switch (state) {
+        case UIControlStateHighlighted:
+            return &AFImageRequestOperationHighlighted;
+        case UIControlStateSelected:
+            return &AFImageRequestOperationSelected;
+        case UIControlStateDisabled:
+            return &AFImageRequestOperationDisabled;
+        case UIControlStateNormal:
+        default:
+            return &AFImageRequestOperationNormal;
+    }
+}
+
+- (AFHTTPRequestOperation *)af_imageRequestOperationForState:(UIControlState)state {
+    return (AFHTTPRequestOperation *)objc_getAssociatedObject(self, af_imageRequestOperationKeyForState(state));
+}
+
+- (void)af_setImageRequestOperation:(AFHTTPRequestOperation *)imageRequestOperation
+                           forState:(UIControlState)state
+{
+    objc_setAssociatedObject(self, af_imageRequestOperationKeyForState(state), imageRequestOperation, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+#pragma mark -
+
+static char AFBackgroundImageRequestOperationNormal;
+static char AFBackgroundImageRequestOperationHighlighted;
+static char AFBackgroundImageRequestOperationSelected;
+static char AFBackgroundImageRequestOperationDisabled;
+
+static const char * af_backgroundImageRequestOperationKeyForState(UIControlState state) {
+    switch (state) {
+        case UIControlStateHighlighted:
+            return &AFBackgroundImageRequestOperationHighlighted;
+        case UIControlStateSelected:
+            return &AFBackgroundImageRequestOperationSelected;
+        case UIControlStateDisabled:
+            return &AFBackgroundImageRequestOperationDisabled;
+        case UIControlStateNormal:
+        default:
+            return &AFBackgroundImageRequestOperationNormal;
+    }
+}
+
+- (AFHTTPRequestOperation *)af_backgroundImageRequestOperationForState:(UIControlState)state {
+    return (AFHTTPRequestOperation *)objc_getAssociatedObject(self, af_backgroundImageRequestOperationKeyForState(state));
+}
+
+- (void)af_setBackgroundImageRequestOperation:(AFHTTPRequestOperation *)imageRequestOperation
+                                     forState:(UIControlState)state
+{
+    objc_setAssociatedObject(self, af_backgroundImageRequestOperationKeyForState(state), imageRequestOperation, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+@end
+
+#pragma mark -
+
+@implementation UIButton (AFNetworking)
+
++ (id <AFImageCache>)sharedImageCache {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+    return objc_getAssociatedObject(self, @selector(sharedImageCache)) ?: [UIImageView sharedImageCache];
+#pragma clang diagnostic pop
+}
+
++ (void)setSharedImageCache:(__nullable id <AFImageCache>)imageCache {
+    objc_setAssociatedObject(self, @selector(sharedImageCache), imageCache, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+#pragma mark -
+
+- (id <AFURLResponseSerialization>)imageResponseSerializer {
+    static id <AFURLResponseSerialization> _af_defaultImageResponseSerializer = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        _af_defaultImageResponseSerializer = [AFImageResponseSerializer serializer];
+    });
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+    return objc_getAssociatedObject(self, @selector(imageResponseSerializer)) ?: _af_defaultImageResponseSerializer;
+#pragma clang diagnostic pop
+}
+
+- (void)setImageResponseSerializer:(id <AFURLResponseSerialization>)serializer {
+    objc_setAssociatedObject(self, @selector(imageResponseSerializer), serializer, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+#pragma mark -
+
+- (void)setImageForState:(UIControlState)state
+                 withURL:(NSURL *)url
+{
+    [self setImageForState:state withURL:url placeholderImage:nil];
+}
+
+- (void)setImageForState:(UIControlState)state
+                 withURL:(NSURL *)url
+        placeholderImage:(UIImage *)placeholderImage
+{
+    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
+    [request addValue:@"image/*" forHTTPHeaderField:@"Accept"];
+
+    [self setImageForState:state withURLRequest:request placeholderImage:placeholderImage success:nil failure:nil];
+}
+
+- (void)setImageForState:(UIControlState)state
+          withURLRequest:(NSURLRequest *)urlRequest
+        placeholderImage:(UIImage *)placeholderImage
+                 success:(void (^)(NSURLRequest *request, NSHTTPURLResponse * __nullable response, UIImage *image))success
+                 failure:(void (^)(NSError *error))failure
+{
+    [self cancelImageRequestOperationForState:state];
+
+    UIImage *cachedImage = [[[self class] sharedImageCache] cachedImageForRequest:urlRequest];
+    if (cachedImage) {
+        if (success) {
+            success(urlRequest, nil, cachedImage);
+        } else {
+            [self setImage:cachedImage forState:state];
+        }
+
+        [self af_setImageRequestOperation:nil forState:state];
+    } else {
+        if (placeholderImage) {
+            [self setImage:placeholderImage forState:state];
+        }
+
+        __weak __typeof(self)weakSelf = self;
+        AFHTTPRequestOperation *imageRequestOperation = [[AFHTTPRequestOperation alloc] initWithRequest:urlRequest];
+        imageRequestOperation.responseSerializer = self.imageResponseSerializer;
+        [imageRequestOperation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
+            __strong __typeof(weakSelf)strongSelf = weakSelf;
+            if ([[urlRequest URL] isEqual:[operation.request URL]]) {
+                if (success) {
+                    success(operation.request, operation.response, responseObject);
+                } else if (responseObject) {
+                    [strongSelf setImage:responseObject forState:state];
+                }
+            }
+            [[[strongSelf class] sharedImageCache] cacheImage:responseObject forRequest:urlRequest];
+        } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
+            if ([[urlRequest URL] isEqual:[operation.request URL]]) {
+                if (failure) {
+                    failure(error);
+                }
+            }
+        }];
+
+        [self af_setImageRequestOperation:imageRequestOperation forState:state];
+        [[[self class] af_sharedImageRequestOperationQueue] addOperation:imageRequestOperation];
+    }
+}
+
+#pragma mark -
+
+- (void)setBackgroundImageForState:(UIControlState)state
+                           withURL:(NSURL *)url
+{
+    [self setBackgroundImageForState:state withURL:url placeholderImage:nil];
+}
+
+- (void)setBackgroundImageForState:(UIControlState)state
+                           withURL:(NSURL *)url
+                  placeholderImage:(UIImage *)placeholderImage
+{
+    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
+    [request addValue:@"image/*" forHTTPHeaderField:@"Accept"];
+
+    [self setBackgroundImageForState:state withURLRequest:request placeholderImage:placeholderImage success:nil failure:nil];
+}
+
+- (void)setBackgroundImageForState:(UIControlState)state
+                    withURLRequest:(NSURLRequest *)urlRequest
+                  placeholderImage:(UIImage *)placeholderImage
+                           success:(void (^)(NSURLRequest *request, NSHTTPURLResponse * __nullable response, UIImage *image))success
+                           failure:(void (^)(NSError *error))failure
+{
+    [self cancelBackgroundImageRequestOperationForState:state];
+
+    UIImage *cachedImage = [[[self class] sharedImageCache] cachedImageForRequest:urlRequest];
+    if (cachedImage) {
+        if (success) {
+            success(urlRequest, nil, cachedImage);
+        } else {
+            [self setBackgroundImage:cachedImage forState:state];
+        }
+
+        [self af_setBackgroundImageRequestOperation:nil forState:state];
+    } else {
+        if (placeholderImage) {
+            [self setBackgroundImage:placeholderImage forState:state];
+        }
+
+        __weak __typeof(self)weakSelf = self;
+        AFHTTPRequestOperation *backgroundImageRequestOperation = [[AFHTTPRequestOperation alloc] initWithRequest:urlRequest];
+        backgroundImageRequestOperation.responseSerializer = self.imageResponseSerializer;
+        [backgroundImageRequestOperation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
+            __strong __typeof(weakSelf)strongSelf = weakSelf;
+            if ([[urlRequest URL] isEqual:[operation.request URL]]) {
+                if (success) {
+                    success(operation.request, operation.response, responseObject);
+                } else if (responseObject) {
+                    [strongSelf setBackgroundImage:responseObject forState:state];
+                }
+            }
+            [[[strongSelf class] sharedImageCache] cacheImage:responseObject forRequest:urlRequest];
+        } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
+            if ([[urlRequest URL] isEqual:[operation.request URL]]) {
+                if (failure) {
+                    failure(error);
+                }
+            }
+        }];
+
+        [self af_setBackgroundImageRequestOperation:backgroundImageRequestOperation forState:state];
+        [[[self class] af_sharedImageRequestOperationQueue] addOperation:backgroundImageRequestOperation];
+    }
+}
+
+#pragma mark -
+
+- (void)cancelImageRequestOperationForState:(UIControlState)state {
+    [[self af_imageRequestOperationForState:state] cancel];
+    [self af_setImageRequestOperation:nil forState:state];
+}
+
+- (void)cancelBackgroundImageRequestOperationForState:(UIControlState)state {
+    [[self af_backgroundImageRequestOperationForState:state] cancel];
+    [self af_setBackgroundImageRequestOperation:nil forState:state];
+}
+
+@end
+
+#endif

Example/Pods/AFNetworking/UIKit+AFNetworking/UIImage+AFNetworking.h

+//
+//  UIImage+AFNetworking.h
+//  
+//
+//  Created by Paulo Ferreira on 08/07/15.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+
+#import <UIKit/UIKit.h>
+
+@interface UIImage (AFNetworking)
+
++ (UIImage*) safeImageWithData:(NSData*)data;
+
+@end
+
+#endif

Example/Pods/AFNetworking/UIKit+AFNetworking/UIImageView+AFNetworking.h

+// UIImageView+AFNetworking.h
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+
+#import <Availability.h>
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@protocol AFURLResponseSerialization, AFImageCache;
+
+/**
+ This category adds methods to the UIKit framework's `UIImageView` class. The methods in this category provide support for loading remote images asynchronously from a URL.
+ */
+@interface UIImageView (AFNetworking)
+
+///----------------------------
+/// @name Accessing Image Cache
+///----------------------------
+
+/**
+ The image cache used to improve image loading performance on scroll views. By default, this is an `NSCache` subclass conforming to the `AFImageCache` protocol, which listens for notification warnings and evicts objects accordingly.
+*/
++ (id <AFImageCache>)sharedImageCache;
+
+/**
+ Set the cache used for image loading.
+
+ @param imageCache The image cache.
+ */
++ (void)setSharedImageCache:(__nullable id <AFImageCache>)imageCache;
+
+///------------------------------------
+/// @name Accessing Response Serializer
+///------------------------------------
+
+/**
+ The response serializer used to create an image representation from the server response and response data. By default, this is an instance of `AFImageResponseSerializer`.
+
+ @discussion Subclasses of `AFImageResponseSerializer` could be used to perform post-processing, such as color correction, face detection, or other effects. See https://github.com/AFNetworking/AFCoreImageSerializer
+ */
+@property (nonatomic, strong) id <AFURLResponseSerialization> imageResponseSerializer;
+
+///--------------------
+/// @name Setting Image
+///--------------------
+
+/**
+ Asynchronously downloads an image from the specified URL, and sets it once the request is finished. Any previous image request for the receiver will be cancelled.
+
+ If the image is cached locally, the image is set immediately, otherwise the specified placeholder image will be set immediately, and then the remote image will be set once the request is finished.
+
+ By default, URL requests have a `Accept` header field value of "image / *", a cache policy of `NSURLCacheStorageAllowed` and a timeout interval of 30 seconds, and are set not handle cookies. To configure URL requests differently, use `setImageWithURLRequest:placeholderImage:success:failure:`
+
+ @param url The URL used for the image request.
+ */
+- (void)setImageWithURL:(NSURL *)url;
+
+/**
+ Asynchronously downloads an image from the specified URL, and sets it once the request is finished. Any previous image request for the receiver will be cancelled.
+
+ If the image is cached locally, the image is set immediately, otherwise the specified placeholder image will be set immediately, and then the remote image will be set once the request is finished.
+
+ By default, URL requests have a `Accept` header field value of "image / *", a cache policy of `NSURLCacheStorageAllowed` and a timeout interval of 30 seconds, and are set not handle cookies. To configure URL requests differently, use `setImageWithURLRequest:placeholderImage:success:failure:`
+
+ @param url The URL used for the image request.
+ @param placeholderImage The image to be set initially, until the image request finishes. If `nil`, the image view will not change its image until the image request finishes.
+ */
+- (void)setImageWithURL:(NSURL *)url
+       placeholderImage:(nullable UIImage *)placeholderImage;
+
+/**
+ Asynchronously downloads an image from the specified URL request, and sets it once the request is finished. Any previous image request for the receiver will be cancelled.
+
+ If the image is cached locally, the image is set immediately, otherwise the specified placeholder image will be set immediately, and then the remote image will be set once the request is finished.
+
+ If a success block is specified, it is the responsibility of the block to set the image of the image view before returning. If no success block is specified, the default behavior of setting the image with `self.image = image` is applied.
+
+ @param urlRequest The URL request used for the image request.
+ @param placeholderImage The image to be set initially, until the image request finishes. If `nil`, the image view will not change its image until the image request finishes.
+ @param success A block to be executed when the image request operation finishes successfully. This block has no return value and takes three arguments: the request sent from the client, the response received from the server, and the image created from the response data of request. If the image was returned from cache, the response parameter will be `nil`.
+ @param failure A block object to be executed when the image request operation finishes unsuccessfully, or that finishes successfully. This block has no return value and takes three arguments: the request sent from the client, the response received from the server, and the error object describing the network or parsing error that occurred.
+ */
+- (void)setImageWithURLRequest:(NSURLRequest *)urlRequest
+              placeholderImage:(nullable UIImage *)placeholderImage
+                       success:(nullable void (^)(NSURLRequest *request, NSHTTPURLResponse * __nullable response, UIImage *image))success
+                       failure:(nullable void (^)(NSURLRequest *request, NSHTTPURLResponse * __nullable response, NSError *error))failure;
+
+/**
+ Cancels any executing image operation for the receiver, if one exists.
+ */
+- (void)cancelImageRequestOperation;
+
+@end
+
+#pragma mark -
+
+/**
+ The `AFImageCache` protocol is adopted by an object used to cache images loaded by the AFNetworking category on `UIImageView`.
+ */
+@protocol AFImageCache <NSObject>
+
+/**
+ Returns a cached image for the specified request, if available.
+
+ @param request The image request.
+
+ @return The cached image.
+ */
+- (nullable UIImage *)cachedImageForRequest:(NSURLRequest *)request;
+
+/**
+ Caches a particular image for the specified request.
+
+ @param image The image to cache.
+ @param request The request to be used as a cache key.
+ */
+- (void)cacheImage:(UIImage *)image
+        forRequest:(NSURLRequest *)request;
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif

Example/Pods/AFNetworking/UIKit+AFNetworking/UIImageView+AFNetworking.m

+// UIImageView+AFNetworking.m
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "UIImageView+AFNetworking.h"
+
+#import <objc/runtime.h>
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+
+#import "AFHTTPRequestOperation.h"
+
+@interface AFImageCache : NSCache <AFImageCache>
+@end
+
+#pragma mark -
+
+@interface UIImageView (_AFNetworking)
+@property (readwrite, nonatomic, strong, setter = af_setImageRequestOperation:) AFHTTPRequestOperation *af_imageRequestOperation;
+@end
+
+@implementation UIImageView (_AFNetworking)
+
++ (NSOperationQueue *)af_sharedImageRequestOperationQueue {
+    static NSOperationQueue *_af_sharedImageRequestOperationQueue = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        _af_sharedImageRequestOperationQueue = [[NSOperationQueue alloc] init];
+        _af_sharedImageRequestOperationQueue.maxConcurrentOperationCount = NSOperationQueueDefaultMaxConcurrentOperationCount;
+    });
+
+    return _af_sharedImageRequestOperationQueue;
+}
+
+- (AFHTTPRequestOperation *)af_imageRequestOperation {
+    return (AFHTTPRequestOperation *)objc_getAssociatedObject(self, @selector(af_imageRequestOperation));
+}
+
+- (void)af_setImageRequestOperation:(AFHTTPRequestOperation *)imageRequestOperation {
+    objc_setAssociatedObject(self, @selector(af_imageRequestOperation), imageRequestOperation, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+@end
+
+#pragma mark -
+
+@implementation UIImageView (AFNetworking)
+@dynamic imageResponseSerializer;
+
++ (id <AFImageCache>)sharedImageCache {
+    static AFImageCache *_af_defaultImageCache = nil;
+    static dispatch_once_t oncePredicate;
+    dispatch_once(&oncePredicate, ^{
+        _af_defaultImageCache = [[AFImageCache alloc] init];
+
+        [[NSNotificationCenter defaultCenter] addObserverForName:UIApplicationDidReceiveMemoryWarningNotification object:nil queue:[NSOperationQueue mainQueue] usingBlock:^(NSNotification * __unused notification) {
+            [_af_defaultImageCache removeAllObjects];
+        }];
+    });
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+    return objc_getAssociatedObject(self, @selector(sharedImageCache)) ?: _af_defaultImageCache;
+#pragma clang diagnostic pop
+}
+
++ (void)setSharedImageCache:(__nullable id <AFImageCache>)imageCache {
+    objc_setAssociatedObject(self, @selector(sharedImageCache), imageCache, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+#pragma mark -
+
+- (id <AFURLResponseSerialization>)imageResponseSerializer {
+    static id <AFURLResponseSerialization> _af_defaultImageResponseSerializer = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        _af_defaultImageResponseSerializer = [AFImageResponseSerializer serializer];
+    });
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+    return objc_getAssociatedObject(self, @selector(imageResponseSerializer)) ?: _af_defaultImageResponseSerializer;
+#pragma clang diagnostic pop
+}
+
+- (void)setImageResponseSerializer:(id <AFURLResponseSerialization>)serializer {
+    objc_setAssociatedObject(self, @selector(imageResponseSerializer), serializer, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+#pragma mark -
+
+- (void)setImageWithURL:(NSURL *)url {
+    [self setImageWithURL:url placeholderImage:nil];
+}
+
+- (void)setImageWithURL:(NSURL *)url
+       placeholderImage:(UIImage *)placeholderImage
+{
+    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
+    [request addValue:@"image/*" forHTTPHeaderField:@"Accept"];
+
+    [self setImageWithURLRequest:request placeholderImage:placeholderImage success:nil failure:nil];
+}
+
+- (void)setImageWithURLRequest:(NSURLRequest *)urlRequest
+              placeholderImage:(UIImage *)placeholderImage
+                       success:(void (^)(NSURLRequest *request, NSHTTPURLResponse * __nullable response, UIImage *image))success
+                       failure:(void (^)(NSURLRequest *request, NSHTTPURLResponse * __nullable response, NSError *error))failure
+{
+    [self cancelImageRequestOperation];
+
+    UIImage *cachedImage = [[[self class] sharedImageCache] cachedImageForRequest:urlRequest];
+    if (cachedImage) {
+        if (success) {
+            success(urlRequest, nil, cachedImage);
+        } else {
+            self.image = cachedImage;
+        }
+
+        self.af_imageRequestOperation = nil;
+    } else {
+        if (placeholderImage) {
+            self.image = placeholderImage;
+        }
+
+        __weak __typeof(self)weakSelf = self;
+        self.af_imageRequestOperation = [[AFHTTPRequestOperation alloc] initWithRequest:urlRequest];
+        self.af_imageRequestOperation.responseSerializer = self.imageResponseSerializer;
+        [self.af_imageRequestOperation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
+            __strong __typeof(weakSelf)strongSelf = weakSelf;
+            if ([[urlRequest URL] isEqual:[strongSelf.af_imageRequestOperation.request URL]]) {
+                if (success) {
+                    success(urlRequest, operation.response, responseObject);
+                } else if (responseObject) {
+                    strongSelf.image = responseObject;
+                }
+
+                if (operation == strongSelf.af_imageRequestOperation){
+                        strongSelf.af_imageRequestOperation = nil;
+                }
+            }
+
+            [[[strongSelf class] sharedImageCache] cacheImage:responseObject forRequest:urlRequest];
+        } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
+            __strong __typeof(weakSelf)strongSelf = weakSelf;
+            if ([[urlRequest URL] isEqual:[strongSelf.af_imageRequestOperation.request URL]]) {
+                if (failure) {
+                    failure(urlRequest, operation.response, error);
+                }
+
+                if (operation == strongSelf.af_imageRequestOperation){
+                        strongSelf.af_imageRequestOperation = nil;
+                }
+            }
+        }];
+
+        [[[self class] af_sharedImageRequestOperationQueue] addOperation:self.af_imageRequestOperation];
+    }
+}
+
+- (void)cancelImageRequestOperation {
+    [self.af_imageRequestOperation cancel];
+    self.af_imageRequestOperation = nil;
+}
+
+@end
+
+#pragma mark -
+
+static inline NSString * AFImageCacheKeyFromURLRequest(NSURLRequest *request) {
+    return [[request URL] absoluteString];
+}
+
+@implementation AFImageCache
+
+- (UIImage *)cachedImageForRequest:(NSURLRequest *)request {
+    switch ([request cachePolicy]) {
+        case NSURLRequestReloadIgnoringCacheData:
+        case NSURLRequestReloadIgnoringLocalAndRemoteCacheData:
+            return nil;
+        default:
+            break;
+    }
+
+	return [self objectForKey:AFImageCacheKeyFromURLRequest(request)];
+}
+
+- (void)cacheImage:(UIImage *)image
+        forRequest:(NSURLRequest *)request
+{
+    if (image && request) {
+        [self setObject:image forKey:AFImageCacheKeyFromURLRequest(request)];
+    }
+}
+
+@end
+
+#endif

Example/Pods/AFNetworking/UIKit+AFNetworking/UIKit+AFNetworking.h

+// UIKit+AFNetworking.h
+//
+// Copyright (c) 2013 AFNetworking (http://afnetworking.com/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#if TARGET_OS_IOS
+#import <UIKit/UIKit.h>
+
+#ifndef _UIKIT_AFNETWORKING_
+    #define _UIKIT_AFNETWORKING_
+
+    #import "AFNetworkActivityIndicatorManager.h"
+
+    #import "UIActivityIndicatorView+AFNetworking.h"
+    #import "UIAlertView+AFNetworking.h"
+    #import "UIButton+AFNetworking.h"
+    #import "UIImageView+AFNetworking.h"
+    #import "UIProgressView+AFNetworking.h"
+    #import "UIRefreshControl+AFNetworking.h"
+    #import "UIWebView+AFNetworking.h"
+#endif /* _UIKIT_AFNETWORKING_ */
+#endif

Example/Pods/AFNetworking/UIKit+AFNetworking/UIProgressView+AFNetworking.h

+// UIProgressView+AFNetworking.h
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+
+#import <Availability.h>
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@class AFURLConnectionOperation;
+
+/**
+ This category adds methods to the UIKit framework's `UIProgressView` class. The methods in this category provide support for binding the progress to the upload and download progress of a session task or request operation.
+ */
+@interface UIProgressView (AFNetworking)
+
+///------------------------------------
+/// @name Setting Session Task Progress
+///------------------------------------
+
+/**
+ Binds the progress to the upload progress of the specified session task.
+
+ @param task The session task.
+ @param animated `YES` if the change should be animated, `NO` if the change should happen immediately.
+ */
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000
+- (void)setProgressWithUploadProgressOfTask:(NSURLSessionUploadTask *)task
+                                   animated:(BOOL)animated;
+#endif
+
+/**
+ Binds the progress to the download progress of the specified session task.
+
+ @param task The session task.
+ @param animated `YES` if the change should be animated, `NO` if the change should happen immediately.
+ */
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000
+- (void)setProgressWithDownloadProgressOfTask:(NSURLSessionDownloadTask *)task
+                                     animated:(BOOL)animated;
+#endif
+
+///------------------------------------
+/// @name Setting Session Task Progress
+///------------------------------------
+
+/**
+ Binds the progress to the upload progress of the specified request operation.
+
+ @param operation The request operation.
+ @param animated `YES` if the change should be animated, `NO` if the change should happen immediately.
+ */
+- (void)setProgressWithUploadProgressOfOperation:(AFURLConnectionOperation *)operation
+                                        animated:(BOOL)animated;
+
+/**
+ Binds the progress to the download progress of the specified request operation.
+
+ @param operation The request operation.
+ @param animated `YES` if the change should be animated, `NO` if the change should happen immediately.
+ */
+- (void)setProgressWithDownloadProgressOfOperation:(AFURLConnectionOperation *)operation
+                                          animated:(BOOL)animated;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif

Example/Pods/AFNetworking/UIKit+AFNetworking/UIProgressView+AFNetworking.m

+// UIProgressView+AFNetworking.m
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "UIProgressView+AFNetworking.h"
+
+#import <objc/runtime.h>
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+
+#import "AFURLConnectionOperation.h"
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000
+#import "AFURLSessionManager.h"
+#endif
+
+static void * AFTaskCountOfBytesSentContext = &AFTaskCountOfBytesSentContext;
+static void * AFTaskCountOfBytesReceivedContext = &AFTaskCountOfBytesReceivedContext;
+
+@interface AFURLConnectionOperation (_UIProgressView)
+@property (readwrite, nonatomic, copy) void (^uploadProgress)(NSUInteger bytes, long long totalBytes, long long totalBytesExpected);
+@property (readwrite, nonatomic, assign, setter = af_setUploadProgressAnimated:) BOOL af_uploadProgressAnimated;
+
+@property (readwrite, nonatomic, copy) void (^downloadProgress)(NSUInteger bytes, long long totalBytes, long long totalBytesExpected);
+@property (readwrite, nonatomic, assign, setter = af_setDownloadProgressAnimated:) BOOL af_downloadProgressAnimated;
+@end
+
+@implementation AFURLConnectionOperation (_UIProgressView)
+@dynamic uploadProgress; // Implemented in AFURLConnectionOperation
+@dynamic af_uploadProgressAnimated;
+
+@dynamic downloadProgress; // Implemented in AFURLConnectionOperation
+@dynamic af_downloadProgressAnimated;
+@end
+
+#pragma mark -
+
+@implementation UIProgressView (AFNetworking)
+
+- (BOOL)af_uploadProgressAnimated {
+    return [(NSNumber *)objc_getAssociatedObject(self, @selector(af_uploadProgressAnimated)) boolValue];
+}
+
+- (void)af_setUploadProgressAnimated:(BOOL)animated {
+    objc_setAssociatedObject(self, @selector(af_uploadProgressAnimated), @(animated), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+- (BOOL)af_downloadProgressAnimated {
+    return [(NSNumber *)objc_getAssociatedObject(self, @selector(af_downloadProgressAnimated)) boolValue];
+}
+
+- (void)af_setDownloadProgressAnimated:(BOOL)animated {
+    objc_setAssociatedObject(self, @selector(af_downloadProgressAnimated), @(animated), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+#pragma mark -
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000
+- (void)setProgressWithUploadProgressOfTask:(NSURLSessionUploadTask *)task
+                                   animated:(BOOL)animated
+{
+    [task addObserver:self forKeyPath:@"state" options:(NSKeyValueObservingOptions)0 context:AFTaskCountOfBytesSentContext];
+    [task addObserver:self forKeyPath:@"countOfBytesSent" options:(NSKeyValueObservingOptions)0 context:AFTaskCountOfBytesSentContext];
+
+    [self af_setUploadProgressAnimated:animated];
+}
+
+- (void)setProgressWithDownloadProgressOfTask:(NSURLSessionDownloadTask *)task
+                                     animated:(BOOL)animated
+{
+    [task addObserver:self forKeyPath:@"state" options:(NSKeyValueObservingOptions)0 context:AFTaskCountOfBytesReceivedContext];
+    [task addObserver:self forKeyPath:@"countOfBytesReceived" options:(NSKeyValueObservingOptions)0 context:AFTaskCountOfBytesReceivedContext];
+
+    [self af_setDownloadProgressAnimated:animated];
+}
+#endif
+
+#pragma mark -
+
+- (void)setProgressWithUploadProgressOfOperation:(AFURLConnectionOperation *)operation
+                                        animated:(BOOL)animated
+{
+    __weak __typeof(self)weakSelf = self;
+    void (^original)(NSUInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite) = [operation.uploadProgress copy];
+    [operation setUploadProgressBlock:^(NSUInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite) {
+        if (original) {
+            original(bytesWritten, totalBytesWritten, totalBytesExpectedToWrite);
+        }
+
+        dispatch_async(dispatch_get_main_queue(), ^{
+            if (totalBytesExpectedToWrite > 0) {
+                __strong __typeof(weakSelf)strongSelf = weakSelf;
+                [strongSelf setProgress:(totalBytesWritten / (totalBytesExpectedToWrite * 1.0f)) animated:animated];
+            }
+        });
+    }];
+}
+
+- (void)setProgressWithDownloadProgressOfOperation:(AFURLConnectionOperation *)operation
+                                          animated:(BOOL)animated
+{
+    __weak __typeof(self)weakSelf = self;
+    void (^original)(NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead) = [operation.downloadProgress copy];
+    [operation setDownloadProgressBlock:^(NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead) {
+        if (original) {
+            original(bytesRead, totalBytesRead, totalBytesExpectedToRead);
+        }
+
+        dispatch_async(dispatch_get_main_queue(), ^{
+            if (totalBytesExpectedToRead > 0) {
+                __strong __typeof(weakSelf)strongSelf = weakSelf;
+                [strongSelf setProgress:(totalBytesRead / (totalBytesExpectedToRead  * 1.0f)) animated:animated];
+            }
+        });
+    }];
+}
+
+#pragma mark - NSKeyValueObserving
+
+- (void)observeValueForKeyPath:(NSString *)keyPath
+                      ofObject:(id)object
+                        change:(__unused NSDictionary *)change
+                       context:(void *)context
+{
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000
+    if (context == AFTaskCountOfBytesSentContext || context == AFTaskCountOfBytesReceivedContext) {
+        if ([keyPath isEqualToString:NSStringFromSelector(@selector(countOfBytesSent))]) {
+            if ([object countOfBytesExpectedToSend] > 0) {
+                dispatch_async(dispatch_get_main_queue(), ^{
+                    [self setProgress:[object countOfBytesSent] / ([object countOfBytesExpectedToSend] * 1.0f) animated:self.af_uploadProgressAnimated];
+                });
+            }
+        }
+
+        if ([keyPath isEqualToString:NSStringFromSelector(@selector(countOfBytesReceived))]) {
+            if ([object countOfBytesExpectedToReceive] > 0) {
+                dispatch_async(dispatch_get_main_queue(), ^{
+                    [self setProgress:[object countOfBytesReceived] / ([object countOfBytesExpectedToReceive] * 1.0f) animated:self.af_downloadProgressAnimated];
+                });
+            }
+        }
+
+        if ([keyPath isEqualToString:NSStringFromSelector(@selector(state))]) {
+            if ([(NSURLSessionTask *)object state] == NSURLSessionTaskStateCompleted) {
+                @try {
+                    [object removeObserver:self forKeyPath:NSStringFromSelector(@selector(state))];
+
+                    if (context == AFTaskCountOfBytesSentContext) {
+                        [object removeObserver:self forKeyPath:NSStringFromSelector(@selector(countOfBytesSent))];
+                    }
+
+                    if (context == AFTaskCountOfBytesReceivedContext) {
+                        [object removeObserver:self forKeyPath:NSStringFromSelector(@selector(countOfBytesReceived))];
+                    }
+                }
+                @catch (NSException * __unused exception) {}
+            }
+        }
+    }
+#endif
+}
+
+@end
+
+#endif

Example/Pods/AFNetworking/UIKit+AFNetworking/UIRefreshControl+AFNetworking.h

+// UIRefreshControl+AFNetworking.m
+//
+// Copyright (c) 2014 AFNetworking (http://afnetworking.com)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+
+#import <Availability.h>
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@class AFURLConnectionOperation;
+
+/**
+ This category adds methods to the UIKit framework's `UIRefreshControl` class. The methods in this category provide support for automatically beginning and ending refreshing depending on the loading state of a request operation or session task.
+ */
+@interface UIRefreshControl (AFNetworking)
+
+///-----------------------------------
+/// @name Refreshing for Session Tasks
+///-----------------------------------
+
+/**
+ Binds the refreshing state to the state of the specified task.
+ 
+ @param task The task. If `nil`, automatic updating from any previously specified operation will be disabled.
+ */
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000
+- (void)setRefreshingWithStateOfTask:(NSURLSessionTask *)task;
+#endif
+
+///----------------------------------------
+/// @name Refreshing for Request Operations
+///----------------------------------------
+
+/**
+ Binds the refreshing state to the execution state of the specified operation.
+
+ @param operation The operation. If `nil`, automatic updating from any previously specified operation will be disabled.
+ */
+- (void)setRefreshingWithStateOfOperation:(AFURLConnectionOperation *)operation;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif

Example/Pods/AFNetworking/UIKit+AFNetworking/UIRefreshControl+AFNetworking.m

+// UIRefreshControl+AFNetworking.m
+//
+// Copyright (c) 2014 AFNetworking (http://afnetworking.com)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "UIRefreshControl+AFNetworking.h"
+#import <objc/runtime.h>
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+
+#import "AFHTTPRequestOperation.h"
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000
+#import "AFURLSessionManager.h"
+#endif
+
+@interface AFRefreshControlNotificationObserver : NSObject
+@property (readonly, nonatomic, weak) UIRefreshControl *refreshControl;
+- (instancetype)initWithActivityRefreshControl:(UIRefreshControl *)refreshControl;
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000
+- (void)setRefreshingWithStateOfTask:(NSURLSessionTask *)task;
+#endif
+- (void)setRefreshingWithStateOfOperation:(AFURLConnectionOperation *)operation;
+
+@end
+
+@implementation UIRefreshControl (AFNetworking)
+
+- (AFRefreshControlNotificationObserver *)af_notificationObserver {
+    AFRefreshControlNotificationObserver *notificationObserver = objc_getAssociatedObject(self, @selector(af_notificationObserver));
+    if (notificationObserver == nil) {
+        notificationObserver = [[AFRefreshControlNotificationObserver alloc] initWithActivityRefreshControl:self];
+        objc_setAssociatedObject(self, @selector(af_notificationObserver), notificationObserver, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+    }
+    return notificationObserver;
+}
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000
+- (void)setRefreshingWithStateOfTask:(NSURLSessionTask *)task {
+    [[self af_notificationObserver] setRefreshingWithStateOfTask:task];
+}
+#endif
+
+- (void)setRefreshingWithStateOfOperation:(AFURLConnectionOperation *)operation {
+    [[self af_notificationObserver] setRefreshingWithStateOfOperation:operation];
+}
+
+@end
+
+@implementation AFRefreshControlNotificationObserver
+
+- (instancetype)initWithActivityRefreshControl:(UIRefreshControl *)refreshControl
+{
+    self = [super init];
+    if (self) {
+        _refreshControl = refreshControl;
+    }
+    return self;
+}
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000
+- (void)setRefreshingWithStateOfTask:(NSURLSessionTask *)task {
+    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+
+    [notificationCenter removeObserver:self name:AFNetworkingTaskDidResumeNotification object:nil];
+    [notificationCenter removeObserver:self name:AFNetworkingTaskDidSuspendNotification object:nil];
+    [notificationCenter removeObserver:self name:AFNetworkingTaskDidCompleteNotification object:nil];
+
+    if (task) {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wreceiver-is-weak"
+#pragma clang diagnostic ignored "-Warc-repeated-use-of-weak"
+        if (task.state == NSURLSessionTaskStateRunning) {
+            [self.refreshControl beginRefreshing];
+
+            [notificationCenter addObserver:self selector:@selector(af_beginRefreshing) name:AFNetworkingTaskDidResumeNotification object:task];
+            [notificationCenter addObserver:self selector:@selector(af_endRefreshing) name:AFNetworkingTaskDidCompleteNotification object:task];
+            [notificationCenter addObserver:self selector:@selector(af_endRefreshing) name:AFNetworkingTaskDidSuspendNotification object:task];
+        } else {
+            [self.refreshControl endRefreshing];
+        }
+#pragma clang diagnostic pop
+    }
+}
+#endif
+
+- (void)setRefreshingWithStateOfOperation:(AFURLConnectionOperation *)operation {
+    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+
+    [notificationCenter removeObserver:self name:AFNetworkingOperationDidStartNotification object:nil];
+    [notificationCenter removeObserver:self name:AFNetworkingOperationDidFinishNotification object:nil];
+
+    if (operation) {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wreceiver-is-weak"
+#pragma clang diagnostic ignored "-Warc-repeated-use-of-weak"
+        if (![operation isFinished]) {
+            if ([operation isExecuting]) {
+                [self.refreshControl beginRefreshing];
+            } else {
+                [self.refreshControl endRefreshing];
+            }
+
+            [notificationCenter addObserver:self selector:@selector(af_beginRefreshing) name:AFNetworkingOperationDidStartNotification object:operation];
+            [notificationCenter addObserver:self selector:@selector(af_endRefreshing) name:AFNetworkingOperationDidFinishNotification object:operation];
+        }
+#pragma clang diagnostic pop
+    }
+}
+
+#pragma mark -
+
+- (void)af_beginRefreshing {
+    dispatch_async(dispatch_get_main_queue(), ^{
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wreceiver-is-weak"
+        [self.refreshControl beginRefreshing];
+#pragma clang diagnostic pop
+    });
+}
+
+- (void)af_endRefreshing {
+    dispatch_async(dispatch_get_main_queue(), ^{
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wreceiver-is-weak"
+        [self.refreshControl endRefreshing];
+#pragma clang diagnostic pop
+    });
+}
+
+#pragma mark -
+
+- (void)dealloc {
+    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000
+    [notificationCenter removeObserver:self name:AFNetworkingTaskDidCompleteNotification object:nil];
+    [notificationCenter removeObserver:self name:AFNetworkingTaskDidResumeNotification object:nil];
+    [notificationCenter removeObserver:self name:AFNetworkingTaskDidSuspendNotification object:nil];
+#endif
+    
+    [notificationCenter removeObserver:self name:AFNetworkingOperationDidStartNotification object:nil];
+    [notificationCenter removeObserver:self name:AFNetworkingOperationDidFinishNotification object:nil];
+}
+
+@end
+
+#endif

Example/Pods/AFNetworking/UIKit+AFNetworking/UIWebView+AFNetworking.h

+// UIWebView+AFNetworking.h
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+
+#import <Availability.h>
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@class AFHTTPRequestSerializer, AFHTTPResponseSerializer;
+@protocol AFURLRequestSerialization, AFURLResponseSerialization;
+
+/**
+ This category adds methods to the UIKit framework's `UIWebView` class. The methods in this category provide increased control over the request cycle, including progress monitoring and success / failure handling.
+
+ @discussion When using these category methods, make sure to assign `delegate` for the web view, which implements `–webView:shouldStartLoadWithRequest:navigationType:` appropriately. This allows for tapped links to be loaded through AFNetworking, and can ensure that `canGoBack` & `canGoForward` update their values correctly.
+ */
+@interface UIWebView (AFNetworking)
+
+/**
+ The request serializer used to serialize requests made with the `-loadRequest:...` category methods. By default, this is an instance of `AFHTTPRequestSerializer`.
+ */
+@property (nonatomic, strong) AFHTTPRequestSerializer <AFURLRequestSerialization> * requestSerializer;
+
+/**
+ The response serializer used to serialize responses made with the `-loadRequest:...` category methods. By default, this is an instance of `AFHTTPResponseSerializer`.
+ */
+@property (nonatomic, strong) AFHTTPResponseSerializer <AFURLResponseSerialization> * responseSerializer;
+
+/**
+ Asynchronously loads the specified request.
+
+ @param request A URL request identifying the location of the content to load. This must not be `nil`.
+ @param progress A block object to be called when an undetermined number of bytes have been downloaded from the server. This block has no return value and takes three arguments: the number of bytes read since the last time the download progress block was called, the total bytes read, and the total bytes expected to be read during the request, as initially determined by the expected content size of the `NSHTTPURLResponse` object. This block may be called multiple times, and will execute on the main thread.
+ @param success A block object to be executed when the request finishes loading successfully. This block returns the HTML string to be loaded by the web view, and takes two arguments: the response, and the response string.
+ @param failure A block object to be executed when the request operation finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a single argument: the error that occurred.
+ */
+- (void)loadRequest:(NSURLRequest *)request
+           progress:(nullable void (^)(NSUInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite))progress
+            success:(nullable NSString * (^)(NSHTTPURLResponse *response, NSString *HTML))success
+            failure:(nullable void (^)(NSError *error))failure;
+
+/**
+ Asynchronously loads the data associated with a particular request with a specified MIME type and text encoding.
+
+ @param request A URL request identifying the location of the content to load. This must not be `nil`.
+ @param MIMEType The MIME type of the content. Defaults to the content type of the response if not specified.
+ @param textEncodingName The IANA encoding name, as in `utf-8` or `utf-16`. Defaults to the response text encoding if not specified.
+ @param progress A block object to be called when an undetermined number of bytes have been downloaded from the server. This block has no return value and takes three arguments: the number of bytes read since the last time the download progress block was called, the total bytes read, and the total bytes expected to be read during the request, as initially determined by the expected content size of the `NSHTTPURLResponse` object. This block may be called multiple times, and will execute on the main thread.
+ @param success A block object to be executed when the request finishes loading successfully. This block returns the data to be loaded by the web view and takes two arguments: the response, and the downloaded data.
+ @param failure A block object to be executed when the request operation finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a single argument: the error that occurred.
+ */
+- (void)loadRequest:(NSURLRequest *)request
+           MIMEType:(nullable NSString *)MIMEType
+   textEncodingName:(nullable NSString *)textEncodingName
+           progress:(nullable void (^)(NSUInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite))progress
+            success:(nullable NSData * (^)(NSHTTPURLResponse *response, NSData *data))success
+            failure:(nullable void (^)(NSError *error))failure;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif

Example/Pods/AFNetworking/UIKit+AFNetworking/UIWebView+AFNetworking.m

+// UIWebView+AFNetworking.m
+// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "UIWebView+AFNetworking.h"
+
+#import <objc/runtime.h>
+
+#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+
+#import "AFHTTPRequestOperation.h"
+#import "AFURLResponseSerialization.h"
+#import "AFURLRequestSerialization.h"
+
+@interface UIWebView (_AFNetworking)
+@property (readwrite, nonatomic, strong, setter = af_setHTTPRequestOperation:) AFHTTPRequestOperation *af_HTTPRequestOperation;
+@end
+
+@implementation UIWebView (_AFNetworking)
+
+- (AFHTTPRequestOperation *)af_HTTPRequestOperation {
+    return (AFHTTPRequestOperation *)objc_getAssociatedObject(self, @selector(af_HTTPRequestOperation));
+}
+
+- (void)af_setHTTPRequestOperation:(AFHTTPRequestOperation *)operation {
+    objc_setAssociatedObject(self, @selector(af_HTTPRequestOperation), operation, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+@end
+
+#pragma mark -
+
+@implementation UIWebView (AFNetworking)
+
+- (AFHTTPRequestSerializer <AFURLRequestSerialization> *)requestSerializer {
+    static AFHTTPRequestSerializer <AFURLRequestSerialization> *_af_defaultRequestSerializer = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        _af_defaultRequestSerializer = [AFHTTPRequestSerializer serializer];
+    });
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+    return objc_getAssociatedObject(self, @selector(requestSerializer)) ?: _af_defaultRequestSerializer;
+#pragma clang diagnostic pop
+}
+
+- (void)setRequestSerializer:(AFHTTPRequestSerializer<AFURLRequestSerialization> *)requestSerializer {
+    objc_setAssociatedObject(self, @selector(requestSerializer), requestSerializer, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+- (AFHTTPResponseSerializer <AFURLResponseSerialization> *)responseSerializer {
+    static AFHTTPResponseSerializer <AFURLResponseSerialization> *_af_defaultResponseSerializer = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        _af_defaultResponseSerializer = [AFHTTPResponseSerializer serializer];
+    });
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+    return objc_getAssociatedObject(self, @selector(responseSerializer)) ?: _af_defaultResponseSerializer;
+#pragma clang diagnostic pop
+}
+
+- (void)setResponseSerializer:(AFHTTPResponseSerializer<AFURLResponseSerialization> *)responseSerializer {
+    objc_setAssociatedObject(self, @selector(responseSerializer), responseSerializer, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+#pragma mark -
+
+- (void)loadRequest:(NSURLRequest *)request
+           progress:(void (^)(NSUInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite))progress
+            success:(NSString * (^)(NSHTTPURLResponse *response, NSString *HTML))success
+            failure:(void (^)(NSError *error))failure
+{
+    [self loadRequest:request MIMEType:nil textEncodingName:nil progress:progress success:^NSData *(NSHTTPURLResponse *response, NSData *data) {
+        NSStringEncoding stringEncoding = NSUTF8StringEncoding;
+        if (response.textEncodingName) {
+            CFStringEncoding encoding = CFStringConvertIANACharSetNameToEncoding((CFStringRef)response.textEncodingName);
+            if (encoding != kCFStringEncodingInvalidId) {
+                stringEncoding = CFStringConvertEncodingToNSStringEncoding(encoding);
+            }
+        }
+
+        NSString *string = [[NSString alloc] initWithData:data encoding:stringEncoding];
+        if (success) {
+            string = success(response, string);
+        }
+
+        return [string dataUsingEncoding:stringEncoding];
+    } failure:failure];
+}
+
+- (void)loadRequest:(NSURLRequest *)request
+           MIMEType:(NSString *)MIMEType
+   textEncodingName:(NSString *)textEncodingName
+           progress:(void (^)(NSUInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite))progress
+            success:(NSData * (^)(NSHTTPURLResponse *response, NSData *data))success
+            failure:(void (^)(NSError *error))failure
+{
+    NSParameterAssert(request);
+
+    if (self.af_HTTPRequestOperation) {
+        [self.af_HTTPRequestOperation cancel];
+    }
+
+    request = [self.requestSerializer requestBySerializingRequest:request withParameters:nil error:nil];
+
+    self.af_HTTPRequestOperation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
+    self.af_HTTPRequestOperation.responseSerializer = self.responseSerializer;
+
+    __weak __typeof(self)weakSelf = self;
+    [self.af_HTTPRequestOperation setDownloadProgressBlock:progress];
+    [self.af_HTTPRequestOperation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id __unused responseObject) {
+        NSData *data = success ? success(operation.response, operation.responseData) : operation.responseData;
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+        __strong __typeof(weakSelf) strongSelf = weakSelf;
+        [strongSelf loadData:data MIMEType:(MIMEType ?: [operation.response MIMEType]) textEncodingName:(textEncodingName ?: [operation.response textEncodingName]) baseURL:[operation.response URL]];
+
+        if ([strongSelf.delegate respondsToSelector:@selector(webViewDidFinishLoad:)]) {
+            [strongSelf.delegate webViewDidFinishLoad:strongSelf];
+        }
+
+#pragma clang diagnostic pop
+    } failure:^(AFHTTPRequestOperation * __unused operation, NSError *error) {
+        if (failure) {
+            failure(error);
+        }
+    }];
+
+    [self.af_HTTPRequestOperation start];
+
+    if ([self.delegate respondsToSelector:@selector(webViewDidStartLoad:)]) {
+        [self.delegate webViewDidStartLoad:self];
+    }
+}
+
+@end
+
+#endif

Example/Pods/GMLibrary/LICENSE

+Copyright (c) 2015 Sean Lee <1240690490@qq.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

Example/Pods/GMLibrary/Pod/Classes/Cache/WMCacheService.h

+//
+//  CacheService.h
+//  Gengmei
+//
+//  Created by Thierry on 1/5/15.
+//  Copyright (c) 2015 Wanmeichuangyi. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+//#import <TMCache.h>
+#import "WMDocumentCache.h"
+
+typedef NS_ENUM(NSUInteger, WMCacheMethod) {
+    WMCacheDiskMethod = 1,
+    WMCacheMemoryMethod
+    
+};
+
+@interface WMCacheService : NSObject
+@property (nonatomic,strong) NSString * urlCommonString;
++ (instancetype )sharedInstance;
+
+/**
+ *  @brief  异步磁盘读写操作
+ */
+
+/***  @brief  由对应的键获取对应的缓存数据*/
+- (void)storeObjectAtDiskWithkey:(NSString *)key
+                          object:(id <NSCoding>)object
+                           block:(TMDiskCacheObjectBlock)block;
+/***  @brief  给特定的键，标记缓存数据并缓存*/
+- (void)fetchObjectAtDiskWithkey:(NSString *)key
+                           block:(TMDiskCacheObjectBlock)block;
+/***  @brief  删除特定的键,对应的缓存数据*/
+- (void)removeObjectAtDiskWithkey:(NSString *)key
+                            block:(TMDiskCacheObjectBlock)block;
+/***  @brief  清空所有的缓存数据*/
+- (void)removeAllObjectsAtDiskWithBlock:(TMDiskCacheBlock)block;
+
+
+/**
+ *  @brief  同步磁盘读写操作
+ */
+
+/***  @brief  由对应的键获取对应的缓存数据*/
+- (void)storeObjectAtDiskWithkey:(NSString *)key
+                          object:(id <NSCoding>)object;
+/***  @brief  给特定的键，标记缓存数据并缓存*/
+- (id)fetchObjectAtDiskWithkey:(NSString *)key;
+/***  @brief  删除特定的键,对应的缓存数据*/
+- (void)removeObjectAtDiskWithkey:(NSString *)key;
+/***  @brief  清空所有的缓存数据*/
+- (void)removeAllObjectsAtDisk;
+
+
+
+
+/**
+ *  @brief  异步内存读写操作
+ */
+/***  @brief  由对应的键获取对应的缓存数据*/
+- (void)storeObjectAtMemoryWithkey:(NSString *)key
+                          object:(id <NSCoding>)object
+                           block:(TMMemoryCacheObjectBlock)block;
+/***  @brief  给特定的键，标记缓存数据并缓存*/
+- (void)fetchObjectAtMemoryWithkey:(NSString *)key
+                           block:(TMMemoryCacheObjectBlock)block;
+/***  @brief  删除特定的键,对应的缓存数据*/
+- (void)removeObjectAtMemoryWithkey:(NSString *)key
+                            block:(TMMemoryCacheObjectBlock)block;
+/***  @brief  清空所有的缓存数据*/
+- (void)removeAllObjectsAtMemoryWithBlock:(TMMemoryCacheBlock)block;
+
+
+/**
+ *  @brief  同步内存读写操作
+ */
+/***  @brief  由对应的键获取对应的缓存数据*/
+- (void)storeObjectAtMemoryWithkey:(NSString *)key
+                            object:(id)object;
+/***  @brief  给特定的键，标记缓存数据并缓存*/
+- (id)fetchObjectAtMemoryWithkey:(NSString *)key;
+/***  @brief  删除特定的键,对应的缓存数据*/
+- (void)removeObjectAtMemoryWithkey:(NSString *)key;
+/***  @brief  清空所有的缓存数据*/
+- (void)removeAllObjectsAtMemory;
+
+
+#pragma mark - 这里将数据缓存到Ducument目录下
+
+
+/**
+ *  @brief  异步磁盘读写操作
+ */
+- (void)storeObjectAtDucmentPathWithkey:(NSString *)key
+                          object:(id <NSCoding>)object
+                           block:(TMDiskCacheObjectBlock)block;
+- (void)fetchObjectAtDucmentPathWithkey:(NSString *)key
+                           block:(TMDiskCacheObjectBlock)block;
+- (void)removeObjectAtDucmentPathWithkey:(NSString *)key
+                            block:(TMDiskCacheObjectBlock)block;
+- (void)removeAllObjectsAtDucmentPathWithBlock:(TMDiskCacheBlock)block;
+
+/**
+ *  @brief  同步内存读写操作
+ */
+- (void)storeObjectAtDucmentPathWithkey:(NSString *)key
+                          object:(id <NSCoding>)object;
+- (id)fetchObjectAtDucmentPathWithkey:(NSString *)key;
+- (void)removeObjectAtDucmentPathWithkey:(NSString *)key;
+- (void)removeAllObjectsAtDucmentPath;
+
+
+@end

Example/Pods/GMLibrary/Pod/Classes/Cache/WMCacheService.m

+//
+//  CacheService.m
+//  Gengmei
+//
+//  Created by Thierry on 1/5/15.
+//  Copyright (c) 2015 Wanmeichuangyi. All rights reserved.
+//
+
+#import "WMCacheService.h"
+static WMCacheService *sharedManager = nil;
+
+@implementation WMCacheService
+
++ (instancetype)sharedInstance{
+    static dispatch_once_t oncePredicate;
+    dispatch_once(&oncePredicate,^{
+        sharedManager = [[WMCacheService alloc]init];
+    });
+    return sharedManager;
+    
+}
+
+- (void)storeObjectAtDiskWithkey:(NSString *)key object:(id <NSCoding>)object block:(TMDiskCacheObjectBlock)block{
+    [[TMCache sharedCache].diskCache setObject:object forKey:key block:block];
+}
+
+- (void)fetchObjectAtDiskWithkey:(NSString *)key block:(TMDiskCacheObjectBlock)block{
+    [[TMCache sharedCache].diskCache objectForKey:key block:block];
+}
+
+- (void)removeObjectAtDiskWithkey:(NSString *)key block:(TMDiskCacheObjectBlock)block{
+    [[TMCache sharedCache].diskCache removeObjectForKey:key block:block];
+}
+
+- (void)removeAllObjectsAtDiskWithBlock:(TMDiskCacheBlock)block{
+    [[TMCache sharedCache].diskCache removeAllObjects:block];
+}
+
+
+- (void)storeObjectAtDiskWithkey:(NSString *)key object:(id <NSCoding>)object{
+    [[TMCache sharedCache].diskCache setObject:object forKey:key];
+
+}
+- (id)fetchObjectAtDiskWithkey:(NSString *)key{
+   return  [[TMCache sharedCache].diskCache objectForKey:key];
+}
+- (void)removeObjectAtDiskWithkey:(NSString *)key{
+    [[TMCache sharedCache].diskCache removeObjectForKey:key];
+    
+}
+- (void)removeAllObjectsAtDisk{
+    [[TMCache sharedCache].diskCache removeAllObjects];
+}
+
+
+- (void)storeObjectAtMemoryWithkey:(NSString *)key object:(id <NSCoding>)object block:(TMMemoryCacheObjectBlock)block{
+    [[TMCache sharedCache].memoryCache setObject:object forKey:key block:block];
+}
+- (void)fetchObjectAtMemoryWithkey:(NSString *)key block:(TMMemoryCacheObjectBlock)block{
+    [[TMCache sharedCache].memoryCache objectForKey:key block:block];
+}
+- (void)removeObjectAtMemoryWithkey:(NSString *)key block:(TMMemoryCacheObjectBlock)block{
+    [[TMCache sharedCache].memoryCache removeObjectForKey:key block:block];
+
+}
+- (void)removeAllObjectsAtMemoryWithBlock:(TMMemoryCacheBlock)block{
+    [[TMCache sharedCache].memoryCache removeAllObjects:block];
+}
+
+
+- (void)storeObjectAtMemoryWithkey:(NSString *)key object:(id)object{
+    [[TMCache sharedCache].memoryCache setObject:object forKey:key];
+}
+- (id)fetchObjectAtMemoryWithkey:(NSString *)key{
+    return  [[TMCache sharedCache].memoryCache objectForKey:key];
+}
+- (void)removeObjectAtMemoryWithkey:(NSString *)key{
+    [[TMCache sharedCache].memoryCache removeObjectForKey:key];
+}
+- (void)removeAllObjectsAtMemory{
+    [[TMCache sharedCache].memoryCache removeAllObjects];
+}
+
+
+
+- (void)storeObjectAtDucmentPathWithkey:(NSString *)key
+                                 object:(id <NSCoding>)object
+                                  block:(TMDiskCacheObjectBlock)block{
+    [[WMDocumentCache sharedCache].diskCache setObject:object forKey:key block:block];
+}
+- (void)fetchObjectAtDucmentPathWithkey:(NSString *)key
+                                  block:(TMDiskCacheObjectBlock)block{
+    [[WMDocumentCache sharedCache].diskCache objectForKey:key block:block];
+}
+- (void)removeObjectAtDucmentPathWithkey:(NSString *)key
+                                   block:(TMDiskCacheObjectBlock)block{
+    [[WMDocumentCache sharedCache].diskCache removeObjectForKey:key block:block];
+}
+- (void)removeAllObjectsAtDucmentPathWithBlock:(TMDiskCacheBlock)block{
+    [[WMDocumentCache sharedCache].diskCache removeAllObjects:block];
+}
+
+- (void)storeObjectAtDucmentPathWithkey:(NSString *)key
+                                 object:(id <NSCoding>)object{
+    [[WMDocumentCache sharedCache].diskCache setObject:object forKey:key];
+}
+- (id)fetchObjectAtDucmentPathWithkey:(NSString *)key{
+   return  [[WMDocumentCache sharedCache].diskCache objectForKey:key];
+}
+- (void)removeObjectAtDucmentPathWithkey:(NSString *)key{
+    [[WMDocumentCache sharedCache].diskCache removeObjectForKey:key];
+}
+- (void)removeAllObjectsAtDucmentPath{
+    [[WMDocumentCache sharedCache].diskCache removeAllObjects];
+}
+
+@end

Example/Pods/GMLibrary/Pod/Classes/Cache/WMDocumentCache.h

+//
+//  WMCache.h
+//  Gengmei
+//
+//  Created by Sean Lee on 7/23/15.
+//  Copyright (c) 2015 Wanmeichuangyi. All rights reserved.
+//
+
+#import "TMCache.h"
+
+@interface WMDocumentCache : TMCache
+
+@end

Example/Pods/GMLibrary/Pod/Classes/Cache/WMDocumentCache.m

+//
+//  WMCache.m
+//  Gengmei
+//
+//  Created by Sean Lee on 7/23/15.
+//  Copyright (c) 2015 Wanmeichuangyi. All rights reserved.
+//
+
+#import "WMDocumentCache.h"
+
+NSString * const WMCacheSharedName = @"WMCacheShared";
+
+
+@implementation WMDocumentCache
+
++ (instancetype)sharedCache{
+    
+    
+    static id cache;
+    static dispatch_once_t predicate;
+    
+    dispatch_once(&predicate, ^{
+        cache = [[self alloc] initWithName:WMCacheSharedName rootPath:[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0]];
+    });
+    
+    return cache;
+    
+}
+
+@end

Example/Pods/GMLibrary/Pod/Classes/Network/WMImageUploadOperation.h

+//
+//  WMImageUploadOperation.h
+//  Gengmei
+//
+//  Created by Sean Lee on 4/7/15.
+//  Copyright (c) 2015 Wanmeichuangyi. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+typedef void (^ImageUploadFinishBlock)(NSDictionary * JSON);
+
+@interface WMOperationQueue : NSOperationQueue
+@end
+
+@interface WMImageUploadOperation : NSOperation
+
+@property (nonatomic, copy)  ImageUploadFinishBlock imageUploadFinishBlock;
+
+- (instancetype)initWithImage:(UIImage *)image  url:(NSString *)url;
+
+- (void)startUpload;
+
+@end

Example/Pods/GMLibrary/Pod/Classes/Network/WMImageUploadOperation.m

+//
+//  WMImageUploadOperation.m
+//  Gengmei
+//
+//  Created by Sean Lee on 4/7/15.
+//  Copyright (c) 2015 Wanmeichuangyi. All rights reserved.
+//
+
+#import "WMImageUploadOperation.h"
+#import "WMNetService.h"
+
+@implementation WMOperationQueue
+
++ (NSOperationQueue *)shareQueue
+{
+    static NSOperationQueue *sharedQueue = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        sharedQueue = [[WMOperationQueue alloc] init];
+        [sharedQueue setMaxConcurrentOperationCount:1];
+    });
+    
+    return sharedQueue;
+}
+
+@end
+
+
+@interface WMImageUploadOperation ()
+@property (nonatomic, strong) UIImage *image;
+@property (nonatomic, strong) NSString *url;
+@end
+
+@implementation WMImageUploadOperation
+
+- (instancetype)initWithImage:(UIImage *)image url:(NSString *)url
+{
+    if (self = [super init])
+    {
+        _image = image;
+        _url = url;
+    }
+    return self;
+}
+
+- (void)main{
+    
+    NSData *imageData = UIImageJPEGRepresentation(_image, 1);
+    __weak __typeof(self)weakSelf = self;
+    
+    [[WMNetService sharedInstance] sendUploadTaskRequestWithData:imageData fileName:@"file" name:@"file" url:_url mineType:@"image/jpeg" parameters:@{@"type":@"image"} success:^(NSDictionary* jsonData) {
+        
+        if (self.imageUploadFinishBlock) {
+            weakSelf.imageUploadFinishBlock(jsonData);
+        }
+        
+    } failed:^(NSString *errorMsg) {
+        if (self.imageUploadFinishBlock) {
+            weakSelf.imageUploadFinishBlock(nil);
+        }
+    }];
+}
+
+- (void)startUpload{
+    
+    [[WMOperationQueue shareQueue] addOperation:self];
+}
+
+@end

Example/Pods/GMLibrary/Pod/Classes/Network/WMNetSecurityWorking.h

+//
+//  WMNetSecurityWorking.h
+//  Pods
+//
+//  Created by licong on 11/19/15.
+//
+//
+
+#import <Foundation/Foundation.h>
+#import "AFHTTPSessionManager.h"
+
+@interface WMNetSecurityWorking : AFHTTPSessionManager
+
++ (WMNetSecurityWorking *) sharedInstanceWithApiHost:(NSString *)apiHost;
+
+
+@end

Example/Pods/GMLibrary/Pod/Classes/Network/WMNetSecurityWorking.m

+//
+//  WMNetSecurityWorking.m
+//  Pods
+//
+//  Created by licong on 11/19/15.
+//
+//
+
+#import "WMNetSecurityWorking.h"
+
+@implementation WMNetSecurityWorking
+
+static WMNetSecurityWorking *_shareInstance=nil;
+
+
++ (WMNetSecurityWorking *) sharedInstanceWithApiHost:(NSString *)apiHost{
+    if(!_shareInstance)
+    {
+        NSURL *baseURL = [NSURL URLWithString:apiHost];
+        _shareInstance=[[WMNetSecurityWorking alloc] initWithBaseURL:baseURL];
+        _shareInstance.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"application/json",@"text/json",@"text/javascript",@"text/html",nil];
+    }
+    return _shareInstance;
+}
+
+@end

Example/Pods/GMLibrary/Pod/Classes/Network/WMNetService.h

+//
+//  NetService.h
+//  Gengmei
+//
+//  Created by Thierry on 1/5/15.
+//  Copyright (c) 2015 Wanmeichuangyi. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+/** @brief API状态枚举 */
+/** @brief API状态枚举 */
+typedef NS_ENUM(NSInteger, APIStatusCode)  {
+    APIStatusCodeSuccess = 0,
+    APIStatusCodeEmpty = 1,
+    APIStatusCodeFailed = 2
+};
+
+/** @brief Http状态枚举 */
+typedef NS_ENUM(NSInteger, HttpStatusCode)  {
+    HttpStatusCodeSuccess = 200,
+    HttpStatusCodeError = 500,
+    HttpStatusCodeUnauthorized = 403,
+};
+
+/** @brief Http方法枚举 */
+typedef NS_ENUM(NSInteger, HttpMethod)  {
+    HttpMethodGet = 0,
+    HttpMethodPost,
+    HttpMethodPut,
+    HttpMethodDelete,
+    HttpMethodPatch
+};
+
+/** @brief Http返回结果Block */
+typedef void(^HttpSuccessBlock)(id responseObject);
+typedef void(^HttpFailedBlock)(NSString * errorMsg);
+
+/**
+ *  @brief  针对业务的封装
+ */
+@class WMNetworking,WMNetSecurityWorking;
+
+@interface WMNetService : NSObject
+
+/**
+ *  @author licong, 15-11-19 19:11:02
+ *
+ *  初始化时候,下载器时候必须设置好,分别用来HTTP和HTTPS请求,但不负责有关上传的HTTP/HTTPS请求,上传图片用了单独的AFHTTPSessionManager
+ *
+ *  @since 0.2.3
+ */
+/***  @brief  普通HTTP下载器*/
+@property (nonatomic, strong) WMNetworking *networking;
+/***  @brief  稍安全HTTPS下载器*/
+@property (nonatomic, strong) WMNetSecurityWorking *netSecurityworking;
+/***  @brief  普通HTTP HOST*/
+@property (nonatomic, strong) NSString *apiHost;
+/***  @brief  稍安全HTTPS HOST*/
+@property (nonatomic, strong) NSString *apiSecurityHost;
+
+@property (nonatomic, strong) NSString *webHost;
+@property (nonatomic, strong) NSString *loginExpiredName;
+@property (nonatomic, strong) NSString *urlCommonParameters;
+
+/**
+ * 单例
+ */
++ (WMNetService *)sharedInstance;
+
+
+/**
+ *  @author licong, 15-11-19 12:11:09
+ *
+ *  普通HTTP请求
+ *
+ *  @param URLString  请求URL的path部分，HOST会在内部拼接固定参数
+ *  @param parameters 请求参数
+ *  @param method     请求方法
+ *  @param success    成功后的回调
+ *  @param failed     失败后的回调
+ *
+ *  @since 0.2.2
+ */
+
+- (void)sendRequestWithURLString:(NSString *)URLString
+                      parameters:(id)parameters
+                          method:(HttpMethod)method
+                         success:(HttpSuccessBlock)success
+                          failed:(HttpFailedBlock)failed;
+/**
+ *  @brief  HTTPS安全请求，将API_HOST中的http://换成https://
+ */
+
+- (void)sendSecurityRequestWithURLString:(NSString *)URLString
+                              parameters:(id)parameters
+                                  method:(HttpMethod)method
+                                 success:(HttpSuccessBlock)success
+                                  failed:(HttpFailedBlock)failed;
+
+
+/**
+ *  @author licong, 15-11-19 12:11:55
+ *
+ *  @brief  普通HTTP上传图片,API_HOST是http://开头
+ *
+ *  @param data      文件大小
+ *  @param fileName  文件名,不能为空,服务器没指定,直接填充@"file"
+ *  @param name      关联上传数据的名字，不能为空,服务器没指定,直接填充@"file"
+ *  @param url       上传地址
+ *  @param mineType  文件类型。image/jpg、audio/aac
+ *
+ *  @since 0.2.2
+ */
+- (void)sendUploadTaskRequestWithData:(NSData *)data
+                             fileName:(NSString *)fileName
+                                 name:(NSString*)name
+                                  url:(NSString*)url
+                             mineType:(NSString *)mineType
+                           parameters:(NSDictionary *)parameters
+                              success:(HttpSuccessBlock)success
+                               failed:(HttpFailedBlock)failed;
+
+/**
+ *  @brief  HTTPS安全上传请求，API_HOST是https://开头
+ */
+- (void)sendSecurityUploadTaskRequestWithData:(NSData *)data
+                                     fileName:(NSString *)fileName
+                                         name:(NSString*)name
+                                          url:(NSString*)url
+                                     mineType:(NSString *)mineType
+                                   parameters:(NSDictionary *)parameters
+                                      success:(HttpSuccessBlock)success
+                                       failed:(HttpFailedBlock)failed;
+@end

Example/Pods/GMLibrary/Pod/Classes/Network/WMNetService.m

+//
+//  NetService.m
+//  Gengmei
+//
+//  Created by Thierry on 1/5/15.
+//  Copyright (c) 2015 Wanmeichuangyi. All rights reserved.
+//
+
+#import "WMNetService.h"
+#import "WMCacheService.h"
+#import "WMNetworking.h"
+#import "WMNetSecurityWorking.h"
+
+@implementation WMNetService
+static WMNetService *_shareInstance=nil;
+
++ (WMNetService *) sharedInstance
+{
+    if(!_shareInstance)
+    {
+        _shareInstance=[[WMNetService alloc] init];
+    }
+    return _shareInstance;
+}
+
+
+- (void)sendRequestWithURLString:(NSString *)URLString
+                      parameters:(id)parameters
+                          method:(HttpMethod)method
+                         success:(HttpSuccessBlock)success
+                          failed:(HttpFailedBlock)failed{
+    [self sendRequestWithURLString:URLString parameters:parameters method:method success:success failed:failed isSecurity:NO];
+    
+}
+
+- (void)sendSecurityRequestWithURLString:(NSString *)URLString
+                              parameters:(id)parameters
+                                  method:(HttpMethod)method
+                                 success:(HttpSuccessBlock)success
+                                  failed:(HttpFailedBlock)failed{
+    [self sendRequestWithURLString:URLString parameters:parameters method:method success:success failed:failed isSecurity:YES];
+
+}
+
+
+- (void)sendUploadTaskRequestWithData:(NSData *)data
+                             fileName:(NSString *)fileName
+                                 name:(NSString*)name
+                                  url:(NSString*)url
+                             mineType:(NSString *)mineType
+                           parameters:(NSDictionary *)parameters
+                              success:(HttpSuccessBlock)success
+                               failed:(HttpFailedBlock)failed{
+    [self sendUploadTaskRequestWithData:data fileName:fileName name:name url:url mineType:mineType parameters:parameters success:success failed:failed isSecurity:NO];
+}
+
+
+- (void)sendSecurityUploadTaskRequestWithData:(NSData *)data
+                                     fileName:(NSString *)fileName
+                                         name:(NSString*)name
+                                          url:(NSString*)url
+                                     mineType:(NSString *)mineType
+                                   parameters:(NSDictionary *)parameters
+                                      success:(HttpSuccessBlock)success
+                                       failed:(HttpFailedBlock)failed{
+    [self sendUploadTaskRequestWithData:data fileName:fileName name:name url:url mineType:mineType parameters:parameters success:success failed:failed isSecurity:YES];
+
+}
+
+
+
+#pragma mark - pravite method
+
+- (void)sendRequestWithURLString:(NSString *)URLString
+                      parameters:(id)parameters
+                          method:(HttpMethod)method
+                         success:(HttpSuccessBlock)success
+                          failed:(HttpFailedBlock)failed
+                      isSecurity:(BOOL)isSecurity{
+
+    NSString * resultURLString = [URLString stringByAppendingString:_urlCommonParameters];
+    //isSecurity为YES表示HTTTPS
+    if (isSecurity) {
+        [self startRequestWithNetworking: _netSecurityworking URLString:resultURLString parameters:parameters method:method success:success failed:failed];
+    }else{
+        [self startRequestWithNetworking: _networking URLString:resultURLString parameters:parameters method:method success:success failed:failed];
+    }
+}
+
+- (void)startRequestWithNetworking:(AFHTTPSessionManager*)networking
+                         URLString:(NSString *)URLString
+                       parameters:(id)parameters
+                           method:(HttpMethod)method
+                          success:(HttpSuccessBlock)success
+                           failed:(HttpFailedBlock)failed{
+    [UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
+    if (method == HttpMethodGet) {
+        [networking GET:URLString parameters:parameters success:^(NSURLSessionDataTask *task, id responseObject) {
+            [self successWithTask:task responseObject:responseObject success:success];
+        } failure:^(NSURLSessionDataTask *task, NSError *error) {
+            [self failureWithTask:task error:error failed:failed];
+        }];
+        
+    }else if (method == HttpMethodPost){
+        [networking POST:URLString parameters:parameters success:^(NSURLSessionDataTask *task, id responseObject) {
+            [self successWithTask:task responseObject:responseObject success:success];
+        } failure:^(NSURLSessionDataTask *task, NSError *error) {
+            [self failureWithTask:task error:error failed:failed];
+        }];
+        
+    }else if (method == HttpMethodDelete){
+        [networking DELETE:URLString parameters:parameters success:^(NSURLSessionDataTask *task, id responseObject) {
+            [self successWithTask:task responseObject:responseObject success:success];
+        } failure:^(NSURLSessionDataTask *task, NSError *error) {
+            [self failureWithTask:task error:error failed:failed];
+        }];
+        
+    }else if (method == HttpMethodPatch){
+        [networking PATCH:URLString parameters:parameters success:^(NSURLSessionDataTask *task, id responseObject) {
+            [self successWithTask:task responseObject:responseObject success:success];
+        } failure:^(NSURLSessionDataTask *task, NSError *error) {
+            [self failureWithTask:task error:error failed:failed];
+        }];
+        
+    }else if (method == HttpMethodPut){
+        [networking PUT:URLString parameters:parameters success:^(NSURLSessionDataTask *task, id responseObject) {
+            [self successWithTask:task responseObject:responseObject success:success];
+        } failure:^(NSURLSessionDataTask *task, NSError *error) {
+            [self failureWithTask:task error:error failed:failed];
+        }];
+    }
+}
+
+- (void)sendUploadTaskRequestWithData:(NSData *)data
+                             fileName:(NSString *)fileName
+                                 name:(NSString*)name
+                                  url:(NSString*)url
+                             mineType:(NSString *)mineType
+                           parameters:(NSDictionary *)parameters
+                              success:(HttpSuccessBlock)success
+                               failed:(HttpFailedBlock)failed
+                           isSecurity:(BOOL)isSecurity{
+    
+    NSString *resultUrl = nil;
+    resultUrl = [url stringByAppendingString:_urlCommonParameters];
+    //isSecurity为YES表示HTTTPS
+    if (isSecurity) {
+        NSString * URLString = [[NSURL URLWithString:resultUrl relativeToURL:[NSURL URLWithString:_apiSecurityHost]] absoluteString];
+        [self startUploadTaskRequestWithData:data fileName:fileName name:name URLString:URLString mineType:mineType parameters:parameters success:success failed:failed];
+    }else{
+        NSString * URLString = [[NSURL URLWithString:resultUrl relativeToURL:[NSURL URLWithString:_apiHost]] absoluteString];
+        [self startUploadTaskRequestWithData:data fileName:fileName name:name URLString:URLString mineType:mineType parameters:parameters success:success failed:failed];
+    }
+}
+
+- (void)startUploadTaskRequestWithData:(NSData *)data
+                              fileName:(NSString *)fileName
+                                  name:(NSString*)name
+                             URLString:(NSString*)URLString
+                              mineType:(NSString *)mineType
+                            parameters:(NSDictionary *)parameters
+                               success:(HttpSuccessBlock)success
+                                failed:(HttpFailedBlock)failed{
+
+    NSMutableURLRequest *request = [[AFHTTPRequestSerializer serializer] multipartFormRequestWithMethod:@"POST" URLString:URLString parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
+        //没有指定name的时候,name不能为空，默认填充 @"file" 即可
+        [formData appendPartWithFileData:data name:name fileName:fileName mimeType:mineType];
+        
+    } error:nil];
+    request.timeoutInterval = 30;
+    
+    AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];
+    NSProgress *progress = nil;
+    
+    [UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
+    NSURLSessionUploadTask *uploadTask = [manager uploadTaskWithStreamedRequest:request progress:&progress completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {
+        [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
+        
+        if (error) {
+            [self failureWithTask:nil error:error failed:failed];
+        } else {
+            [self successWithTask:nil responseObject:responseObject success:success];
+        }
+    }];
+    
+    [uploadTask resume];
+    
+}
+
+
+#pragma mark - deal with successTask and FailedTask
+
+- (void)successWithTask:(NSURLSessionDataTask *)task
+         responseObject:(id)responseObject
+                success:(HttpSuccessBlock)success{
+    
+    dispatch_async(dispatch_get_main_queue(), ^{
+        if (success) {
+            [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
+            success(responseObject);
+        }
+    });
+}
+
+- (void)failureWithTask:(NSURLSessionDataTask *)task
+                  error:(NSError *)error
+                 failed:(HttpFailedBlock)failed{
+    
+    dispatch_async(dispatch_get_main_queue(), ^{
+        if (failed) {
+            [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
+            NSHTTPURLResponse *response = (NSHTTPURLResponse *)task.response;
+            NSURLRequest *request = task.originalRequest;
+            
+            NSInteger statusCode = response.statusCode;
+            NSString *errorStr = [NSString stringWithFormat:@"%@ %ld: %@ %@",request.URL.path, (long)statusCode, [error localizedFailureReason],[error localizedDescription]];
+            // TODO: 可以根据不同的statusCode返回不同的提示
+            if(statusCode == HttpStatusCodeUnauthorized){
+                [[NSNotificationCenter defaultCenter] postNotificationName:_loginExpiredName object:nil];
+            }else {
+                errorStr = @"网络错误";
+            }
+            failed(errorStr);
+        }
+    });
+}
+
+#pragma mark - set ApiHost
+
+- (void)setApiHost:(NSString *)apiHost{
+    
+    _apiHost = apiHost;
+    _networking = [WMNetworking sharedInstanceWithApiHost:_apiHost];
+}
+
+- (void)setApiSecurityHost:(NSString *)apiSecurityHost{
+    _apiSecurityHost = apiSecurityHost;
+    _netSecurityworking = [WMNetSecurityWorking sharedInstanceWithApiHost:_apiSecurityHost];
+}
+
+@end

Example/Pods/GMLibrary/Pod/Classes/Network/WMNetworking.h

+//
+//  WMNetworking.h
+//  Gengmei
+//
+//  Created by wangyang on 1/15/15.
+//  Copyright (c) 2015 Wanmeichuangyi. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "AFHTTPSessionManager.h"
+
+/**
+ *  @brief  针对AFNetworking的封装
+ */
+@interface WMNetworking : AFHTTPSessionManager
+
+/**
+ * 单例
+ */
++ (WMNetworking *) sharedInstanceWithApiHost:(NSString *)apiHost;
+
+@end

Example/Pods/GMLibrary/Pod/Classes/Network/WMNetworking.m

+//
+//  WMNetworking.m
+//  Gengmei
+//
+//  Created by wangyang on 1/15/15.
+//  Copyright (c) 2015 Wanmeichuangyi. All rights reserved.
+//
+
+#import "WMNetworking.h"
+
+@implementation WMNetworking
+
+static WMNetworking *_shareInstance=nil;
+
++ (WMNetworking *) sharedInstanceWithApiHost:(NSString *)apiHost{
+    if(!_shareInstance)
+    {    
+        NSURL *baseURL = [NSURL URLWithString:apiHost];
+        _shareInstance=[[WMNetworking alloc] initWithBaseURL:baseURL];
+        _shareInstance.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"application/json",@"text/json",@"text/javascript",@"text/html",nil];
+    }
+    return _shareInstance;
+}
+
+@end

Example/Pods/GMLibrary/README.md

+# GMLibrary
+
+[![CI Status](http://img.shields.io/travis/Sean Lee/GMLibrary.svg?style=flat)](https://travis-ci.org/Sean Lee/GMLibrary)
+[![Version](https://img.shields.io/cocoapods/v/GMLibrary.svg?style=flat)](http://cocoapods.org/pods/GMLibrary)
+[![License](https://img.shields.io/cocoapods/l/GMLibrary.svg?style=flat)](http://cocoapods.org/pods/GMLibrary)
+[![Platform](https://img.shields.io/cocoapods/p/GMLibrary.svg?style=flat)](http://cocoapods.org/pods/GMLibrary)
+
+## Usage
+
+To run the example project, clone the repo, and run `pod install` from the Example directory first.
+
+## Requirements
+
+## Installation
+
+GMLibrary is available through [CocoaPods](http://cocoapods.org). To install
+it, simply add the following line to your Podfile:
+
+```ruby
+pod "GMLibrary"
+```
+
+## Author
+
+Sean Lee, 1240690490@qq.com
+
+## License
+
+GMLibrary is available under the MIT license. See the LICENSE file for more info.

Example/Pods/Headers/Private/AFNetworking/AFHTTPRequestOperation.h

+../../../AFNetworking/AFNetworking/AFHTTPRequestOperation.h
\ No newline at end of file

Example/Pods/Headers/Private/AFNetworking/AFHTTPRequestOperationManager.h

+../../../AFNetworking/AFNetworking/AFHTTPRequestOperationManager.h
\ No newline at end of file

Example/Pods/Headers/Private/AFNetworking/AFHTTPSessionManager.h

+../../../AFNetworking/AFNetworking/AFHTTPSessionManager.h
\ No newline at end of file

Example/Pods/Headers/Private/AFNetworking/AFNetworkActivityIndicatorManager.h

+../../../AFNetworking/UIKit+AFNetworking/AFNetworkActivityIndicatorManager.h
\ No newline at end of file

Example/Pods/Headers/Private/AFNetworking/AFNetworkReachabilityManager.h

+../../../AFNetworking/AFNetworking/AFNetworkReachabilityManager.h
\ No newline at end of file

Example/Pods/Headers/Private/AFNetworking/AFNetworking.h

+../../../AFNetworking/AFNetworking/AFNetworking.h
\ No newline at end of file

Example/Pods/Headers/Private/AFNetworking/AFSecurityPolicy.h

+../../../AFNetworking/AFNetworking/AFSecurityPolicy.h
\ No newline at end of file

Example/Pods/Headers/Private/AFNetworking/AFURLConnectionOperation.h

+../../../AFNetworking/AFNetworking/AFURLConnectionOperation.h
\ No newline at end of file

Example/Pods/Headers/Private/AFNetworking/AFURLRequestSerialization.h

+../../../AFNetworking/AFNetworking/AFURLRequestSerialization.h
\ No newline at end of file

Example/Pods/Headers/Private/AFNetworking/AFURLResponseSerialization.h

+../../../AFNetworking/AFNetworking/AFURLResponseSerialization.h
\ No newline at end of file

Example/Pods/Headers/Private/AFNetworking/AFURLSessionManager.h

+../../../AFNetworking/AFNetworking/AFURLSessionManager.h
\ No newline at end of file

Example/Pods/Headers/Private/AFNetworking/UIActivityIndicatorView+AFNetworking.h

+../../../AFNetworking/UIKit+AFNetworking/UIActivityIndicatorView+AFNetworking.h
\ No newline at end of file

Example/Pods/Headers/Private/AFNetworking/UIAlertView+AFNetworking.h

+../../../AFNetworking/UIKit+AFNetworking/UIAlertView+AFNetworking.h
\ No newline at end of file

Example/Pods/Headers/Private/AFNetworking/UIButton+AFNetworking.h

+../../../AFNetworking/UIKit+AFNetworking/UIButton+AFNetworking.h
\ No newline at end of file

Example/Pods/Headers/Private/AFNetworking/UIImage+AFNetworking.h

+../../../AFNetworking/UIKit+AFNetworking/UIImage+AFNetworking.h
\ No newline at end of file

Example/Pods/Headers/Private/AFNetworking/UIImageView+AFNetworking.h

+../../../AFNetworking/UIKit+AFNetworking/UIImageView+AFNetworking.h
\ No newline at end of file

Example/Pods/Headers/Private/AFNetworking/UIKit+AFNetworking.h

+../../../AFNetworking/UIKit+AFNetworking/UIKit+AFNetworking.h
\ No newline at end of file

Example/Pods/Headers/Private/AFNetworking/UIProgressView+AFNetworking.h

+../../../AFNetworking/UIKit+AFNetworking/UIProgressView+AFNetworking.h
\ No newline at end of file

Example/Pods/Headers/Private/AFNetworking/UIRefreshControl+AFNetworking.h

+../../../AFNetworking/UIKit+AFNetworking/UIRefreshControl+AFNetworking.h
\ No newline at end of file

Example/Pods/Headers/Private/AFNetworking/UIWebView+AFNetworking.h

+../../../AFNetworking/UIKit+AFNetworking/UIWebView+AFNetworking.h
\ No newline at end of file

Example/Pods/Headers/Private/GMLibrary/WMCacheService.h

+../../../GMLibrary/Pod/Classes/Cache/WMCacheService.h
\ No newline at end of file

Example/Pods/Headers/Private/GMLibrary/WMDocumentCache.h

+../../../GMLibrary/Pod/Classes/Cache/WMDocumentCache.h
\ No newline at end of file

Example/Pods/Headers/Private/GMLibrary/WMImageUploadOperation.h

+../../../GMLibrary/Pod/Classes/Network/WMImageUploadOperation.h
\ No newline at end of file

Example/Pods/Headers/Private/GMLibrary/WMNetSecurityWorking.h

+../../../GMLibrary/Pod/Classes/Network/WMNetSecurityWorking.h
\ No newline at end of file

Example/Pods/Headers/Private/GMLibrary/WMNetService.h

+../../../GMLibrary/Pod/Classes/Network/WMNetService.h
\ No newline at end of file

Example/Pods/Headers/Private/GMLibrary/WMNetworking.h

+../../../GMLibrary/Pod/Classes/Network/WMNetworking.h
\ No newline at end of file

Example/Pods/Headers/Private/TMCache/TMCache.h

+../../../TMCache/TMCache/TMCache.h
\ No newline at end of file

Example/Pods/Headers/Private/TMCache/TMCacheBackgroundTaskManager.h

+../../../TMCache/TMCache/TMCacheBackgroundTaskManager.h
\ No newline at end of file

Example/Pods/Headers/Private/TMCache/TMDiskCache.h

+../../../TMCache/TMCache/TMDiskCache.h
\ No newline at end of file

Example/Pods/Headers/Private/TMCache/TMMemoryCache.h

+../../../TMCache/TMCache/TMMemoryCache.h
\ No newline at end of file

Example/Pods/Local Podspecs/GMPhobos.podspec.json

 {
   "name": "GMPhobos",
-  "version": "0.0.1",
+  "version": "0.0.2",
   "summary": "A short description of GMPhobos.",
   "homepage": "http://git.gengmei.cc/gengmeiios/GMPhobos",
   "license": "MIT",
@@ -9,12 +9,17 @@
   },
   "source": {
     "git": "http://git.gengmei.cc/gengmeiios/GMPhobos.git",
-    "tag": "0.0.1"
+    "tag": "0.0.2"
   },
   "platforms": {
     "ios": "7.0"
   },
   "requires_arc": true,
   "source_files": "Pod/Classes/**/*",
+  "dependencies": {
+    "GMLibrary": [
+      "~> 0.0.1"
+    ]
+  },
   "libraries": "z"
 }

Example/Pods/Manifest.lock

 PODS:
-  - GMPhobos (0.0.1)
+  - AFNetworking (2.6.3):
+    - AFNetworking/NSURLConnection (= 2.6.3)
+    - AFNetworking/NSURLSession (= 2.6.3)
+    - AFNetworking/Reachability (= 2.6.3)
+    - AFNetworking/Security (= 2.6.3)
+    - AFNetworking/Serialization (= 2.6.3)
+    - AFNetworking/UIKit (= 2.6.3)
+  - AFNetworking/NSURLConnection (2.6.3):
+    - AFNetworking/Reachability
+    - AFNetworking/Security
+    - AFNetworking/Serialization
+  - AFNetworking/NSURLSession (2.6.3):
+    - AFNetworking/Reachability
+    - AFNetworking/Security
+    - AFNetworking/Serialization
+  - AFNetworking/Reachability (2.6.3)
+  - AFNetworking/Security (2.6.3)
+  - AFNetworking/Serialization (2.6.3)
+  - AFNetworking/UIKit (2.6.3):
+    - AFNetworking/NSURLConnection
+    - AFNetworking/NSURLSession
+  - GMLibrary (0.0.1):
+    - GMLibrary/Cache (= 0.0.1)
+    - GMLibrary/Network (= 0.0.1)
+  - GMLibrary/Cache (0.0.1):
+    - TMCache (~> 2.1.0)
+  - GMLibrary/Network (0.0.1):
+    - AFNetworking (~> 2.6.1)
+    - GMLibrary/Cache (~> 0.0.1)
+  - GMPhobos (0.0.2):
+    - GMLibrary (~> 0.0.1)
+  - TMCache (2.1.0)
 
 DEPENDENCIES:
   - GMPhobos (from `../`)
@@ -9,6 +40,9 @@ EXTERNAL SOURCES:
     :path: "../"
 
 SPEC CHECKSUMS:
-  GMPhobos: 7c46530669b3ab2866f37d6c97bd54b493996564
+  AFNetworking: cb8d14a848e831097108418f5d49217339d4eb60
+  GMLibrary: c31039ad32bc93f866d6c3052c20acb8cf9c1568
+  GMPhobos: fa1d3cf45aea2dfb7677bc8ce1fac91d2fb34bd3
+  TMCache: 95ebcc9b3c7e90fb5fd8fc3036cba3aa781c9bed
 
 COCOAPODS: 0.39.0

Example/Pods/Pods.xcodeproj/xcshareddata/xcschemes/GMPhobos.xcscheme

@@ -14,7 +14,7 @@
             buildForArchiving = "YES">
             <BuildableReference
                BuildableIdentifier = 'primary'
-               BlueprintIdentifier = '65BEEDBF7D3174523D526C4B'
+               BlueprintIdentifier = '3800332E5A7E07DE0DC419F7'
                BlueprintName = 'GMPhobos'
                ReferencedContainer = 'container:Pods.xcodeproj'
                BuildableName = 'GMPhobos.framework'>

Example/Pods/TMCache/LICENSE.txt

+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
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+
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+
+5. Submission of Contributions. Unless You explicitly state otherwise,
+   any Contribution intentionally submitted for inclusion in the Work
+   by You to the Licensor shall be under the terms and conditions of
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+   Notwithstanding the above, nothing herein shall supersede or modify
+   the terms of any separate license agreement you may have executed
+   with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade
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+
+7. Disclaimer of Warranty. Unless required by applicable law or
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+   has been advised of the possibility of such damages.
+
+9. Accepting Warranty or Additional Liability. While redistributing
+   the Work or Derivative Works thereof, You may choose to offer,
+   and charge a fee for, acceptance of support, warranty, indemnity,
+   or other liability obligations and/or rights consistent with this
+   License. However, in accepting such obligations, You may act only
+   on Your own behalf and on Your sole responsibility, not on behalf
+   of any other Contributor, and only if You agree to indemnify,
+   defend, and hold each Contributor harmless for any liability
+   incurred by, or claims asserted against, such Contributor by reason
+   of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
+
+APPENDIX: How to apply the Apache License to your work.
+
+   To apply the Apache License to your work, attach the following
+   boilerplate notice, with the fields enclosed by brackets "[]"
+   replaced with your own identifying information. (Don't include
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+
+Copyright [2013] [Tumblr, Inc.]
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.

Example/Pods/TMCache/README.md

+# TMCache
+
+## Fast parallel object cache for iOS and OS X.
+
+[![Build Status](https://img.shields.io/travis/tumblr/TMCache.svg?style=flat)](https://travis-ci.org/tumblr/XExtensionItem)
+[![Version](http://img.shields.io/cocoapods/v/TMCache.svg?style=flat)](http://cocoapods.org/?q=XExtensionItem)
+[![Platform](http://img.shields.io/cocoapods/p/TMCache.svg?style=flat)]()
+[![License](http://img.shields.io/cocoapods/l/TMCache.svg?style=flat)](https://github.com/tumblr/XExtensionItem/blob/master/LICENSE)
+
+[TMCache](TMCache/TMCache.h) is a key/value store designed for persisting temporary objects that are expensive to reproduce, such as downloaded data or the results of slow processing. It is comprised of two self-similar stores, one in memory ([TMMemoryCache](TMCache/TMMemoryCache.h)) and one on disk ([TMDiskCache](TMCache/TMDiskCache.h)), all backed by GCD and safe to access from multiple threads simultaneously. On iOS, `TMMemoryCache` will clear itself when the app receives a memory warning or goes into the background. Objects stored in `TMDiskCache` remain until you trim the cache yourself, either manually or by setting a byte or age limit.
+
+`TMCache` and `TMDiskCache` accept any object conforming to [NSCoding](https://developer.apple.com/library/ios/#documentation/Cocoa/Reference/Foundation/Protocols/NSCoding_Protocol/Reference/Reference.html). Put things in like this:
+
+```objective-c
+UIImage *img = [[UIImage alloc] initWithData:data scale:[[UIScreen mainScreen] scale]];
+[[TMCache sharedCache] setObject:img forKey:@"image" block:nil]; // returns immediately
+```
+    
+Get them back out like this:
+
+```objective-c
+[[TMCache sharedCache] objectForKey:@"image"
+                              block:^(TMCache *cache, NSString *key, id object) {
+                                  UIImage *image = (UIImage *)object;
+                                  NSLog(@"image scale: %f", image.scale);
+                              }];
+```
+                                  
+`TMMemoryCache` allows for concurrent reads and serialized writes, while `TMDiskCache` serializes disk access across all instances in the app to increase performance and prevent file contention. `TMCache` coordinates them so that objects added to memory are available immediately to other threads while being written to disk safely in the background. Both caches are public properties of `TMCache`, so it's easy to manipulate one or the other separately if necessary.
+
+Collections work too. Thanks to the magic of `NSKeyedArchiver`, objects repeated in a collection only occupy the space of one on disk:
+
+```objective-c
+NSArray *images = @[ image, image, image ];
+[[TMCache sharedCache] setObject:images forKey:@"images"];
+NSLog(@"3 for the price of 1: %d", [[[TMCache sharedCache] diskCache] byteCount]);
+```
+
+## Installation
+
+### Manually
+
+[Download the latest tag](https://github.com/tumblr/TMCache/tags) and drag the `TMCache` folder into your Xcode project.
+
+Install the docs by double clicking the `.docset` file under `docs/`, or view them online at [cocoadocs.org](http://cocoadocs.org/docsets/TMCache/)
+
+### Git Submodule
+
+    git submodule add https://github.com/tumblr/TMCache.git
+    git submodule update --init
+
+### CocoaPods
+
+Add [TMCache](http://cocoapods.org/?q=name%3ATMCache) to your `Podfile` and run `pod install`.
+
+## Requirements
+
+__TMCache__ requires iOS 5.0 or OS X 10.7 and greater.
+
+## Contributing
+
+Please see [CONTRIBUTING.md](https://github.com/tumblr/XExtensionItem/blob/master/CONTRIBUTING.md) for information on how to help out.
+
+## Contact
+
+[Bryan Irace](mailto:bryan@tumblr.com)
+
+## License
+
+Copyright 2013 Tumblr, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. [See the License](LICENSE.txt) for the specific language governing permissions and limitations under the License.

Example/Pods/TMCache/TMCache/TMCache.h

+/**
+ `TMCache` is a thread safe key/value store designed for persisting temporary objects that are expensive to
+ reproduce, such as downloaded data or the results of slow processing. It is comprised of two self-similar
+ stores, one in memory (<TMMemoryCache>) and one on disk (<TMDiskCache>).
+ 
+ `TMCache` itself actually does very little; its main function is providing a front end for a common use case:
+ a small, fast memory cache that asynchronously persists itself to a large, slow disk cache. When objects are
+ removed from the memory cache in response to an "apocalyptic" event they remain in the disk cache and are
+ repopulated in memory the next time they are accessed. `TMCache` also does the tedious work of creating a
+ dispatch group to wait for both caches to finish their operations without blocking each other.
+ 
+ The parallel caches are accessible as public properties (<memoryCache> and <diskCache>) and can be manipulated
+ separately if necessary. See the docs for <TMMemoryCache> and <TMDiskCache> for more details.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "TMDiskCache.h"
+#import "TMMemoryCache.h"
+
+@class TMCache;
+
+typedef void (^TMCacheBlock)(TMCache *cache);
+typedef void (^TMCacheObjectBlock)(TMCache *cache, NSString *key, id object);
+
+@interface TMCache : NSObject
+
+#pragma mark -
+/// @name Core
+
+/**
+ The name of this cache, used to create the <diskCache> and also appearing in stack traces.
+ */
+@property (readonly) NSString *name;
+
+/**
+ A concurrent queue on which blocks passed to the asynchronous access methods are run.
+ */
+@property (readonly) dispatch_queue_t queue;
+
+/**
+ Synchronously retrieves the total byte count of the <diskCache> on the shared disk queue.
+ */
+@property (readonly) NSUInteger diskByteCount;
+
+/**
+ The underlying disk cache, see <TMDiskCache> for additional configuration and trimming options.
+ */
+@property (readonly) TMDiskCache *diskCache;
+
+/**
+ The underlying memory cache, see <TMMemoryCache> for additional configuration and trimming options.
+ */
+@property (readonly) TMMemoryCache *memoryCache;
+
+#pragma mark -
+/// @name Initialization
+
+/**
+ A shared cache.
+ 
+ @result The shared singleton cache instance.
+ */
++ (instancetype)sharedCache;
+
+/**
+ Multiple instances with the same name are allowed and can safely access
+ the same data on disk thanks to the magic of seriality. Also used to create the <diskCache>.
+ 
+ @see name
+ @param name The name of the cache.
+ @result A new cache with the specified name.
+ */
+- (instancetype)initWithName:(NSString *)name;
+
+/**
+ The designated initializer. Multiple instances with the same name are allowed and can safely access
+ the same data on disk thanks to the magic of seriality. Also used to create the <diskCache>.
+ 
+ @see name
+ @param name The name of the cache.
+ @param rootPath The path of the cache on disk.
+ @result A new cache with the specified name.
+ */
+- (instancetype)initWithName:(NSString *)name rootPath:(NSString *)rootPath;
+
+#pragma mark -
+/// @name Asynchronous Methods
+
+/**
+ Retrieves the object for the specified key. This method returns immediately and executes the passed
+ block after the object is available, potentially in parallel with other blocks on the <queue>.
+ 
+ @param key The key associated with the requested object.
+ @param block A block to be executed concurrently when the object is available.
+ */
+- (void)objectForKey:(NSString *)key block:(TMCacheObjectBlock)block;
+
+/**
+ Stores an object in the cache for the specified key. This method returns immediately and executes the
+ passed block after the object has been stored, potentially in parallel with other blocks on the <queue>.
+ 
+ @param object An object to store in the cache.
+ @param key A key to associate with the object. This string will be copied.
+ @param block A block to be executed concurrently after the object has been stored, or nil.
+ */
+- (void)setObject:(id <NSCoding>)object forKey:(NSString *)key block:(TMCacheObjectBlock)block;
+
+/**
+ Removes the object for the specified key. This method returns immediately and executes the passed
+ block after the object has been removed, potentially in parallel with other blocks on the <queue>.
+ 
+ @param key The key associated with the object to be removed.
+ @param block A block to be executed concurrently after the object has been removed, or nil.
+ */
+- (void)removeObjectForKey:(NSString *)key block:(TMCacheObjectBlock)block;
+
+/**
+ Removes all objects from the cache that have not been used since the specified date. This method returns immediately and
+ executes the passed block after the cache has been trimmed, potentially in parallel with other blocks on the <queue>.
+ 
+ @param date Objects that haven't been accessed since this date are removed from the cache.
+ @param block A block to be executed concurrently after the cache has been trimmed, or nil.
+ */
+- (void)trimToDate:(NSDate *)date block:(TMCacheBlock)block;
+
+/**
+ Removes all objects from the cache.This method returns immediately and executes the passed block after the
+ cache has been cleared, potentially in parallel with other blocks on the <queue>.
+ 
+ @param block A block to be executed concurrently after the cache has been cleared, or nil.
+ */
+- (void)removeAllObjects:(TMCacheBlock)block;
+
+#pragma mark -
+/// @name Synchronous Methods
+
+/**
+ Retrieves the object for the specified key. This method blocks the calling thread until the object is available.
+ 
+ @see objectForKey:block:
+ @param key The key associated with the object.
+ @result The object for the specified key.
+ */
+- (id)objectForKey:(NSString *)key;
+
+/**
+ Stores an object in the cache for the specified key. This method blocks the calling thread until the object has been set.
+ 
+ @see setObject:forKey:block:
+ @param object An object to store in the cache.
+ @param key A key to associate with the object. This string will be copied.
+ */
+- (void)setObject:(id <NSCoding>)object forKey:(NSString *)key;
+
+/**
+ Removes the object for the specified key. This method blocks the calling thread until the object
+ has been removed.
+ 
+ @param key The key associated with the object to be removed.
+ */
+- (void)removeObjectForKey:(NSString *)key;
+
+/**
+ Removes all objects from the cache that have not been used since the specified date.
+ This method blocks the calling thread until the cache has been trimmed.
+ 
+ @param date Objects that haven't been accessed since this date are removed from the cache.
+ */
+- (void)trimToDate:(NSDate *)date;
+
+/**
+ Removes all objects from the cache. This method blocks the calling thread until the cache has been cleared.
+ */
+- (void)removeAllObjects;
+
+@end

Example/Pods/TMCache/TMCache/TMCache.m

+#import "TMCache.h"
+
+NSString * const TMCachePrefix = @"com.tumblr.TMCache";
+NSString * const TMCacheSharedName = @"TMCacheShared";
+
+@interface TMCache ()
+#if OS_OBJECT_USE_OBJC
+@property (strong, nonatomic) dispatch_queue_t queue;
+#else
+@property (assign, nonatomic) dispatch_queue_t queue;
+#endif
+@end
+
+@implementation TMCache
+
+#pragma mark - Initialization -
+
+#if !OS_OBJECT_USE_OBJC
+- (void)dealloc
+{
+    dispatch_release(_queue);
+    _queue = nil;
+}
+#endif
+
+- (instancetype)initWithName:(NSString *)name
+{
+    return [self initWithName:name rootPath:[NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) objectAtIndex:0]];
+}
+
+- (instancetype)initWithName:(NSString *)name rootPath:(NSString *)rootPath
+{
+    if (!name)
+        return nil;
+
+    if (self = [super init]) {
+        _name = [name copy];
+        
+        NSString *queueName = [[NSString alloc] initWithFormat:@"%@.%p", TMCachePrefix, self];
+        _queue = dispatch_queue_create([queueName UTF8String], DISPATCH_QUEUE_CONCURRENT);
+
+        _diskCache = [[TMDiskCache alloc] initWithName:_name rootPath:rootPath];
+        _memoryCache = [[TMMemoryCache alloc] init];
+    }
+    return self;
+}
+
+- (NSString *)description
+{
+    return [[NSString alloc] initWithFormat:@"%@.%@.%p", TMCachePrefix, _name, self];
+}
+
++ (instancetype)sharedCache
+{
+    static id cache;
+    static dispatch_once_t predicate;
+
+    dispatch_once(&predicate, ^{
+        cache = [[self alloc] initWithName:TMCacheSharedName];
+    });
+
+    return cache;
+}
+
+#pragma mark - Public Asynchronous Methods -
+
+- (void)objectForKey:(NSString *)key block:(TMCacheObjectBlock)block
+{
+    if (!key || !block)
+        return;
+
+    __weak TMCache *weakSelf = self;
+
+    dispatch_async(_queue, ^{
+        TMCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        __weak TMCache *weakSelf = strongSelf;
+        
+        [strongSelf->_memoryCache objectForKey:key block:^(TMMemoryCache *cache, NSString *key, id object) {
+            TMCache *strongSelf = weakSelf;
+            if (!strongSelf)
+                return;
+            
+            if (object) {
+                [strongSelf->_diskCache fileURLForKey:key block:^(TMDiskCache *cache, NSString *key, id <NSCoding> object, NSURL *fileURL) {
+                    // update the access time on disk
+                }];
+
+                __weak TMCache *weakSelf = strongSelf;
+                
+                dispatch_async(strongSelf->_queue, ^{
+                    TMCache *strongSelf = weakSelf;
+                    if (strongSelf)
+                        block(strongSelf, key, object);
+                });
+            } else {
+                __weak TMCache *weakSelf = strongSelf;
+
+                [strongSelf->_diskCache objectForKey:key block:^(TMDiskCache *cache, NSString *key, id <NSCoding> object, NSURL *fileURL) {
+                    TMCache *strongSelf = weakSelf;
+                    if (!strongSelf)
+                        return;
+                    
+                    [strongSelf->_memoryCache setObject:object forKey:key block:nil];
+                    
+                    __weak TMCache *weakSelf = strongSelf;
+                    
+                    dispatch_async(strongSelf->_queue, ^{
+                        TMCache *strongSelf = weakSelf;
+                        if (strongSelf)
+                            block(strongSelf, key, object);
+                    });
+                }];
+            }
+        }];
+    });
+}
+
+- (void)setObject:(id <NSCoding>)object forKey:(NSString *)key block:(TMCacheObjectBlock)block
+{
+    if (!key || !object)
+        return;
+
+    dispatch_group_t group = nil;
+    TMMemoryCacheObjectBlock memBlock = nil;
+    TMDiskCacheObjectBlock diskBlock = nil;
+    
+    if (block) {
+        group = dispatch_group_create();
+        dispatch_group_enter(group);
+        dispatch_group_enter(group);
+        
+        memBlock = ^(TMMemoryCache *cache, NSString *key, id object) {
+            dispatch_group_leave(group);
+        };
+        
+        diskBlock = ^(TMDiskCache *cache, NSString *key, id <NSCoding> object, NSURL *fileURL) {
+            dispatch_group_leave(group);
+        };
+    }
+    
+    [_memoryCache setObject:object forKey:key block:memBlock];
+    [_diskCache setObject:object forKey:key block:diskBlock];
+    
+    if (group) {
+        __weak TMCache *weakSelf = self;
+        dispatch_group_notify(group, _queue, ^{
+            TMCache *strongSelf = weakSelf;
+            if (strongSelf)
+                block(strongSelf, key, object);
+        });
+        
+        #if !OS_OBJECT_USE_OBJC
+        dispatch_release(group);
+        #endif
+    }
+}
+
+- (void)removeObjectForKey:(NSString *)key block:(TMCacheObjectBlock)block
+{
+    if (!key)
+        return;
+    
+    dispatch_group_t group = nil;
+    TMMemoryCacheObjectBlock memBlock = nil;
+    TMDiskCacheObjectBlock diskBlock = nil;
+    
+    if (block) {
+        group = dispatch_group_create();
+        dispatch_group_enter(group);
+        dispatch_group_enter(group);
+        
+        memBlock = ^(TMMemoryCache *cache, NSString *key, id object) {
+            dispatch_group_leave(group);
+        };
+        
+        diskBlock = ^(TMDiskCache *cache, NSString *key, id <NSCoding> object, NSURL *fileURL) {
+            dispatch_group_leave(group);
+        };
+    }
+
+    [_memoryCache removeObjectForKey:key block:memBlock];
+    [_diskCache removeObjectForKey:key block:diskBlock];
+    
+    if (group) {
+        __weak TMCache *weakSelf = self;
+        dispatch_group_notify(group, _queue, ^{
+            TMCache *strongSelf = weakSelf;
+            if (strongSelf)
+                block(strongSelf, key, nil);
+        });
+        
+        #if !OS_OBJECT_USE_OBJC
+        dispatch_release(group);
+        #endif
+    }
+}
+
+- (void)removeAllObjects:(TMCacheBlock)block
+{
+    dispatch_group_t group = nil;
+    TMMemoryCacheBlock memBlock = nil;
+    TMDiskCacheBlock diskBlock = nil;
+    
+    if (block) {
+        group = dispatch_group_create();
+        dispatch_group_enter(group);
+        dispatch_group_enter(group);
+        
+        memBlock = ^(TMMemoryCache *cache) {
+            dispatch_group_leave(group);
+        };
+        
+        diskBlock = ^(TMDiskCache *cache) {
+            dispatch_group_leave(group);
+        };
+    }
+    
+    [_memoryCache removeAllObjects:memBlock];
+    [_diskCache removeAllObjects:diskBlock];
+    
+    if (group) {
+        __weak TMCache *weakSelf = self;
+        dispatch_group_notify(group, _queue, ^{
+            TMCache *strongSelf = weakSelf;
+            if (strongSelf)
+                block(strongSelf);
+        });
+        
+        #if !OS_OBJECT_USE_OBJC
+        dispatch_release(group);
+        #endif
+    }
+}
+
+- (void)trimToDate:(NSDate *)date block:(TMCacheBlock)block
+{
+    if (!date)
+        return;
+
+    dispatch_group_t group = nil;
+    TMMemoryCacheBlock memBlock = nil;
+    TMDiskCacheBlock diskBlock = nil;
+    
+    if (block) {
+        group = dispatch_group_create();
+        dispatch_group_enter(group);
+        dispatch_group_enter(group);
+        
+        memBlock = ^(TMMemoryCache *cache) {
+            dispatch_group_leave(group);
+        };
+        
+        diskBlock = ^(TMDiskCache *cache) {
+            dispatch_group_leave(group);
+        };
+    }
+    
+    [_memoryCache trimToDate:date block:memBlock];
+    [_diskCache trimToDate:date block:diskBlock];
+    
+    if (group) {
+        __weak TMCache *weakSelf = self;
+        dispatch_group_notify(group, _queue, ^{
+            TMCache *strongSelf = weakSelf;
+            if (strongSelf)
+                block(strongSelf);
+        });
+        
+        #if !OS_OBJECT_USE_OBJC
+        dispatch_release(group);
+        #endif
+    }
+}
+
+#pragma mark - Public Synchronous Accessors -
+
+- (NSUInteger)diskByteCount
+{
+    __block NSUInteger byteCount = 0;
+    
+    dispatch_sync([TMDiskCache sharedQueue], ^{
+        byteCount = self.diskCache.byteCount;
+    });
+    
+    return byteCount;
+}
+
+#pragma mark - Public Synchronous Methods -
+
+- (id)objectForKey:(NSString *)key
+{
+    if (!key)
+        return nil;
+    
+    __block id objectForKey = nil;
+
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+
+    [self objectForKey:key block:^(TMCache *cache, NSString *key, id object) {
+        objectForKey = object;
+        dispatch_semaphore_signal(semaphore);
+    }];
+
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+    #if !OS_OBJECT_USE_OBJC
+    dispatch_release(semaphore);
+    #endif
+
+    return objectForKey;
+}
+
+- (void)setObject:(id <NSCoding>)object forKey:(NSString *)key
+{
+    if (!object || !key)
+        return;
+    
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+
+    [self setObject:object forKey:key block:^(TMCache *cache, NSString *key, id object) {
+        dispatch_semaphore_signal(semaphore);
+    }];
+
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+    #if !OS_OBJECT_USE_OBJC
+    dispatch_release(semaphore);
+    #endif
+}
+
+- (void)removeObjectForKey:(NSString *)key
+{
+    if (!key)
+        return;
+    
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+
+    [self removeObjectForKey:key block:^(TMCache *cache, NSString *key, id object) {
+        dispatch_semaphore_signal(semaphore);
+    }];
+
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+    #if !OS_OBJECT_USE_OBJC
+    dispatch_release(semaphore);
+    #endif
+}
+
+- (void)trimToDate:(NSDate *)date
+{
+    if (!date)
+        return;
+    
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+
+    [self trimToDate:date block:^(TMCache *cache) {
+        dispatch_semaphore_signal(semaphore);
+    }];
+
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+    #if !OS_OBJECT_USE_OBJC
+    dispatch_release(semaphore);
+    #endif
+}
+
+- (void)removeAllObjects
+{
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+
+    [self removeAllObjects:^(TMCache *cache) {
+        dispatch_semaphore_signal(semaphore);
+    }];
+
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+    #if !OS_OBJECT_USE_OBJC
+    dispatch_release(semaphore);
+    #endif
+}
+
+@end
+
+// HC SVNT DRACONES

Example/Pods/TMCache/TMCache/TMCacheBackgroundTaskManager.h

+//
+//  TMCacheBackgroundTaskManager.h
+//  TMCache
+//
+//  Created by Bryan Irace on 4/24/15.
+//  Copyright (c) 2015 Tumblr. All rights reserved.
+//
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_4_0
+#import <UIKit/UIKit.h>
+#else
+typedef NSUInteger UIBackgroundTaskIdentifier;
+#endif
+
+/**
+ A protocol that classes who can begin and end background tasks can conform to. This protocol provides an abstraction in
+ order to avoid referencing `+ [UIApplication sharedApplication]` from within an iOS application extension.
+ */
+@protocol TMCacheBackgroundTaskManager <NSObject>
+
+/**
+ Marks the beginning of a new long-running background task.
+ 
+ @return A unique identifier for the new background task. You must pass this value to the `endBackgroundTask:` method to
+ mark the end of this task. This method returns `UIBackgroundTaskInvalid` if running in the background is not possible.
+ */
+- (UIBackgroundTaskIdentifier)beginBackgroundTask;
+
+/**
+ Marks the end of a specific long-running background task.
+ 
+ @param identifier An identifier returned by the `beginBackgroundTaskWithExpirationHandler:` method.
+ */
+- (void)endBackgroundTask:(UIBackgroundTaskIdentifier)identifier;
+
+@end

Example/Pods/TMCache/TMCache/TMDiskCache.h

+/**
+ `TMDiskCache` is a thread safe key/value store backed by the file system. It accepts any object conforming
+ to the `NSCoding` protocol, which includes the basic Foundation data types and collection classes and also
+ many UIKit classes, notably `UIImage`. All work is performed on a serial queue shared by all instances in
+ the app, and archiving is handled by `NSKeyedArchiver`. This is a particular advantage for `UIImage` because
+ it skips `UIImagePNGRepresentation()` and retains information like scale and orientation.
+ 
+ The designated initializer for `TMDiskCache` is <initWithName:>. The <name> string is used to create a directory
+ under Library/Caches that scopes disk access for any instance sharing this name. Multiple instances with the
+ same name are allowed because all disk access is serialized on the <sharedQueue>. The <name> also appears in
+ stack traces and return value for `description:`.
+ 
+ Unless otherwise noted, all properties and methods are safe to access from any thread at any time. All blocks
+ will cause the queue to wait, making it safe to access and manipulate the actual cache files on disk for the
+ duration of the block. In addition, the <sharedQueue> can be set to target an existing serial I/O queue, should
+ your app already have one.
+ 
+ Because this cache is bound by disk I/O it can be much slower than <TMMemoryCache>, although values stored in
+ `TMDiskCache` persist after application relaunch. Using <TMCache> is recommended over using `TMDiskCache`
+ by itself, as it adds a fast layer of additional memory caching while still writing to disk.
+
+ All access to the cache is dated so the that the least-used objects can be trimmed first. Setting an optional
+ <ageLimit> will trigger a GCD timer to periodically to trim the cache with <trimToDate:>.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class TMDiskCache;
+@protocol TMCacheBackgroundTaskManager;
+
+typedef void (^TMDiskCacheBlock)(TMDiskCache *cache);
+typedef void (^TMDiskCacheObjectBlock)(TMDiskCache *cache, NSString *key, id <NSCoding> object, NSURL *fileURL);
+
+@interface TMDiskCache : NSObject
+
+#pragma mark -
+/// @name Core
+
+/**
+ The name of this cache, used to create a directory under Library/Caches and also appearing in stack traces.
+ */
+@property (readonly) NSString *name;
+
+/**
+ The URL of the directory used by this cache, usually `Library/Caches/com.tumblr.TMDiskCache.(name)`
+ 
+ @warning Do not interact with files under this URL except on the <sharedQueue>.
+ */
+@property (readonly) NSURL *cacheURL;
+
+/**
+ The total number of bytes used on disk, as reported by `NSURLTotalFileAllocatedSizeKey`.
+ 
+ @warning This property is technically safe to access from any thread, but it reflects the value *right now*,
+ not taking into account any pending operations. In most cases this value should only be read from a block on the
+ <sharedQueue>, which will ensure its accuracy and prevent it from changing during the lifetime of the block.
+ 
+ For example:
+ 
+    // some background thread, not a block already running on the shared queue
+
+    dispatch_sync([TMDiskCache sharedQueue], ^{
+        NSLog(@"accurate, unchanging byte count: %d", [[TMDiskCache sharedCache] byteCount]);
+    });
+ */
+@property (readonly) NSUInteger byteCount;
+
+/**
+ The maximum number of bytes allowed on disk. This value is checked every time an object is set, if the written
+ size exceeds the limit a trim call is queued. Defaults to `0.0`, meaning no practical limit.
+ 
+ @warning Do not read this property on the <sharedQueue> (including asynchronous method blocks).
+ */
+@property (assign) NSUInteger byteLimit;
+
+/**
+ The maximum number of seconds an object is allowed to exist in the cache. Setting this to a value
+ greater than `0.0` will start a recurring GCD timer with the same period that calls <trimToDate:>.
+ Setting it back to `0.0` will stop the timer. Defaults to `0.0`, meaning no limit.
+ 
+ @warning Do not read this property on the <sharedQueue> (including asynchronous method blocks).
+ */
+@property (assign) NSTimeInterval ageLimit;
+
+#pragma mark -
+/// @name Event Blocks
+
+/**
+ A block to be executed just before an object is added to the cache. The queue waits during execution.
+ */
+@property (copy) TMDiskCacheObjectBlock willAddObjectBlock;
+
+/**
+ A block to be executed just before an object is removed from the cache. The queue waits during execution.
+ */
+@property (copy) TMDiskCacheObjectBlock willRemoveObjectBlock;
+
+/**
+ A block to be executed just before all objects are removed from the cache as a result of <removeAllObjects:>.
+ The queue waits during execution.
+ */
+@property (copy) TMDiskCacheBlock willRemoveAllObjectsBlock;
+
+/**
+ A block to be executed just after an object is added to the cache. The queue waits during execution.
+ */
+@property (copy) TMDiskCacheObjectBlock didAddObjectBlock;
+
+/**
+ A block to be executed just after an object is removed from the cache. The queue waits during execution.
+ */
+@property (copy) TMDiskCacheObjectBlock didRemoveObjectBlock;
+
+/**
+ A block to be executed just after all objects are removed from the cache as a result of <removeAllObjects:>.
+ The queue waits during execution.
+ */
+@property (copy) TMDiskCacheBlock didRemoveAllObjectsBlock;
+
+#pragma mark -
+/// @name Initialization
+
+/**
+ A shared cache.
+ 
+ @result The shared singleton cache instance.
+ */
++ (instancetype)sharedCache;
+
+/**
+ A shared serial queue, used by all instances of this class. Use `dispatch_set_target_queue` to integrate
+ this queue with an exisiting serial I/O queue.
+ 
+ @result The shared singleton queue instance.
+ */
++ (dispatch_queue_t)sharedQueue;
+
+/**
+ Empties the trash with `DISPATCH_QUEUE_PRIORITY_BACKGROUND`. Does not block the <sharedQueue>.
+ */
++ (void)emptyTrash;
+
+
+/**
+ Multiple instances with the same name are allowed and can safely access
+ the same data on disk thanks to the magic of seriality.
+ 
+ @see name
+ @param name The name of the cache.
+ @result A new cache with the specified name.
+ */
+- (instancetype)initWithName:(NSString *)name;
+
+/**
+ The designated initializer. Multiple instances with the same name are allowed and can safely access
+ the same data on disk thanks to the magic of seriality.
+ 
+ @see name
+ @param name The name of the cache.
+ @param rootPath The path of the cache.
+ @result A new cache with the specified name.
+ */
+- (instancetype)initWithName:(NSString *)name rootPath:(NSString *)rootPath;
+
+#pragma mark -
+/// @name Asynchronous Methods
+
+/**
+ Retrieves the object for the specified key. This method returns immediately and executes the passed
+ block as soon as the object is available on the serial <sharedQueue>.
+ 
+ @warning The fileURL is only valid for the duration of this block, do not use it after the block ends.
+ 
+ @param key The key associated with the requested object.
+ @param block A block to be executed serially when the object is available.
+ */
+- (void)objectForKey:(NSString *)key block:(TMDiskCacheObjectBlock)block;
+
+/**
+ Retrieves the fileURL for the specified key without actually reading the data from disk. This method
+ returns immediately and executes the passed block as soon as the object is available on the serial
+ <sharedQueue>.
+ 
+ @warning Access is protected for the duration of the block, but to maintain safe disk access do not
+ access this fileURL after the block has ended. Do all work on the <sharedQueue>.
+ 
+ @param key The key associated with the requested object.
+ @param block A block to be executed serially when the file URL is available.
+ */
+- (void)fileURLForKey:(NSString *)key block:(TMDiskCacheObjectBlock)block;
+
+/**
+ Stores an object in the cache for the specified key. This method returns immediately and executes the
+ passed block as soon as the object has been stored.
+ 
+ @param object An object to store in the cache.
+ @param key A key to associate with the object. This string will be copied.
+ @param block A block to be executed serially after the object has been stored, or nil.
+ */
+- (void)setObject:(id <NSCoding>)object forKey:(NSString *)key block:(TMDiskCacheObjectBlock)block;
+
+/**
+ Removes the object for the specified key. This method returns immediately and executes the passed block
+ as soon as the object has been removed.
+ 
+ @param key The key associated with the object to be removed.
+ @param block A block to be executed serially after the object has been removed, or nil.
+ */
+- (void)removeObjectForKey:(NSString *)key block:(TMDiskCacheObjectBlock)block;
+
+/**
+ Removes all objects from the cache that have not been used since the specified date.
+ This method returns immediately and executes the passed block as soon as the cache has been trimmed.
+
+ @param date Objects that haven't been accessed since this date are removed from the cache.
+ @param block A block to be executed serially after the cache has been trimmed, or nil.
+ */
+- (void)trimToDate:(NSDate *)date block:(TMDiskCacheBlock)block;
+
+/**
+ Removes objects from the cache, largest first, until the cache is equal to or smaller than the specified byteCount.
+ This method returns immediately and executes the passed block as soon as the cache has been trimmed.
+ 
+ @param byteCount The cache will be trimmed equal to or smaller than this size.
+ @param block A block to be executed serially after the cache has been trimmed, or nil.
+ */
+- (void)trimToSize:(NSUInteger)byteCount block:(TMDiskCacheBlock)block;
+
+/**
+ Removes objects from the cache, ordered by date (least recently used first), until the cache is equal to or smaller
+ than the specified byteCount. This method returns immediately and executes the passed block as soon as the cache has
+ been trimmed.
+
+ @param byteCount The cache will be trimmed equal to or smaller than this size.
+ @param block A block to be executed serially after the cache has been trimmed, or nil.
+ */
+- (void)trimToSizeByDate:(NSUInteger)byteCount block:(TMDiskCacheBlock)block;
+
+/**
+ Removes all objects from the cache. This method returns immediately and executes the passed block as soon as the
+ cache has been cleared.
+ 
+ @param block A block to be executed serially after the cache has been cleared, or nil.
+ */
+- (void)removeAllObjects:(TMDiskCacheBlock)block;
+
+/**
+ Loops through all objects in the cache (reads and writes are suspended during the enumeration). Data is not actually
+ read from disk, the `object` parameter of the block will be `nil` but the `fileURL` will be available.
+ This method returns immediately.
+
+ @param block A block to be executed for every object in the cache.
+ @param completionBlock An optional block to be executed after the enumeration is complete.
+ */
+- (void)enumerateObjectsWithBlock:(TMDiskCacheObjectBlock)block completionBlock:(TMDiskCacheBlock)completionBlock;
+
+#pragma mark -
+/// @name Synchronous Methods
+
+/**
+ Retrieves the object for the specified key. This method blocks the calling thread until the
+ object is available.
+ 
+ @see objectForKey:block:
+ @param key The key associated with the object.
+ @result The object for the specified key.
+ */
+- (id <NSCoding>)objectForKey:(NSString *)key;
+
+/**
+ Retrieves the file URL for the specified key. This method blocks the calling thread until the
+ url is available. Do not use this URL anywhere but on the <sharedQueue>. This method probably
+ shouldn't even exist, just use the asynchronous one.
+ 
+ @see fileURLForKey:block:
+ @param key The key associated with the object.
+ @result The file URL for the specified key.
+ */
+- (NSURL *)fileURLForKey:(NSString *)key;
+
+/**
+ Stores an object in the cache for the specified key. This method blocks the calling thread until
+ the object has been stored.
+ 
+ @see setObject:forKey:block:
+ @param object An object to store in the cache.
+ @param key A key to associate with the object. This string will be copied.
+ */
+- (void)setObject:(id <NSCoding>)object forKey:(NSString *)key;
+
+/**
+ Removes the object for the specified key. This method blocks the calling thread until the object
+ has been removed.
+ 
+ @param key The key associated with the object to be removed.
+ */
+- (void)removeObjectForKey:(NSString *)key;
+
+/**
+ Removes all objects from the cache that have not been used since the specified date.
+ This method blocks the calling thread until the cache has been trimmed.
+
+ @param date Objects that haven't been accessed since this date are removed from the cache.
+ */
+- (void)trimToDate:(NSDate *)date;
+
+/**
+ Removes objects from the cache, largest first, until the cache is equal to or smaller than the
+ specified byteCount. This method blocks the calling thread until the cache has been trimmed.
+ 
+ @param byteCount The cache will be trimmed equal to or smaller than this size.
+ */
+- (void)trimToSize:(NSUInteger)byteCount;
+
+/**
+ Removes objects from the cache, ordered by date (least recently used first), until the cache is equal to or
+ smaller than the specified byteCount. This method blocks the calling thread until the cache has been trimmed.
+
+ @param byteCount The cache will be trimmed equal to or smaller than this size.
+ */
+- (void)trimToSizeByDate:(NSUInteger)byteCount;
+
+/**
+ Removes all objects from the cache. This method blocks the calling thread until the cache has been cleared.
+ */
+- (void)removeAllObjects;
+
+/**
+ Loops through all objects in the cache (reads and writes are suspended during the enumeration). Data is not actually
+ read from disk, the `object` parameter of the block will be `nil` but the `fileURL` will be available.
+ This method blocks the calling thread until all objects have been enumerated.
+
+ @param block A block to be executed for every object in the cache.
+
+ @warning Do not call this method within the event blocks (<didRemoveObjectBlock>, etc.)
+ Instead use the asynchronous version, <enumerateObjectsWithBlock:completionBlock:>.
+ */
+- (void)enumerateObjectsWithBlock:(TMDiskCacheObjectBlock)block;
+
+#pragma mark -
+/// @name Background Tasks
+
+/**
+ Set a global manager to be used for setting up/tearing down any background tasks needed by TMCache.
+ 
+ @param backgroundTaskManager Background task manager.
+ */
++ (void)setBackgroundTaskManager:(id <TMCacheBackgroundTaskManager>)backgroundTaskManager;
+
+@end

Example/Pods/TMCache/TMCache/TMDiskCache.m

+#import "TMDiskCache.h"
+#import "TMCacheBackgroundTaskManager.h"
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_4_0
+#import <UIKit/UIKit.h>
+#endif
+
+#define TMDiskCacheError(error) if (error) { NSLog(@"%@ (%d) ERROR: %@", \
+                                    [[NSString stringWithUTF8String:__FILE__] lastPathComponent], \
+                                    __LINE__, [error localizedDescription]); }
+
+static id <TMCacheBackgroundTaskManager> TMCacheBackgroundTaskManager;
+
+NSString * const TMDiskCachePrefix = @"com.tumblr.TMDiskCache";
+NSString * const TMDiskCacheSharedName = @"TMDiskCacheShared";
+
+@interface TMDiskCache ()
+@property (assign) NSUInteger byteCount;
+@property (strong, nonatomic) NSURL *cacheURL;
+@property (assign, nonatomic) dispatch_queue_t queue;
+@property (strong, nonatomic) NSMutableDictionary *dates;
+@property (strong, nonatomic) NSMutableDictionary *sizes;
+@end
+
+@implementation TMDiskCache
+
+@synthesize willAddObjectBlock = _willAddObjectBlock;
+@synthesize willRemoveObjectBlock = _willRemoveObjectBlock;
+@synthesize willRemoveAllObjectsBlock = _willRemoveAllObjectsBlock;
+@synthesize didAddObjectBlock = _didAddObjectBlock;
+@synthesize didRemoveObjectBlock = _didRemoveObjectBlock;
+@synthesize didRemoveAllObjectsBlock = _didRemoveAllObjectsBlock;
+@synthesize byteLimit = _byteLimit;
+@synthesize ageLimit = _ageLimit;
+
+#pragma mark - Initialization -
+
+- (instancetype)initWithName:(NSString *)name
+{
+    return [self initWithName:name rootPath:[NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) objectAtIndex:0]];
+}
+
+- (instancetype)initWithName:(NSString *)name rootPath:(NSString *)rootPath
+{
+    if (!name)
+        return nil;
+
+    if (self = [super init]) {
+        _name = [name copy];
+        _queue = [TMDiskCache sharedQueue];
+
+        _willAddObjectBlock = nil;
+        _willRemoveObjectBlock = nil;
+        _willRemoveAllObjectsBlock = nil;
+        _didAddObjectBlock = nil;
+        _didRemoveObjectBlock = nil;
+        _didRemoveAllObjectsBlock = nil;
+        
+        _byteCount = 0;
+        _byteLimit = 0;
+        _ageLimit = 0.0;
+
+        _dates = [[NSMutableDictionary alloc] init];
+        _sizes = [[NSMutableDictionary alloc] init];
+
+        NSString *pathComponent = [[NSString alloc] initWithFormat:@"%@.%@", TMDiskCachePrefix, _name];
+        _cacheURL = [NSURL fileURLWithPathComponents:@[ rootPath, pathComponent ]];
+
+        __weak TMDiskCache *weakSelf = self;
+
+        dispatch_async(_queue, ^{
+            TMDiskCache *strongSelf = weakSelf;
+            [strongSelf createCacheDirectory];
+            [strongSelf initializeDiskProperties];
+        });
+    }
+    return self;
+}
+
+- (NSString *)description
+{
+    return [[NSString alloc] initWithFormat:@"%@.%@.%p", TMDiskCachePrefix, _name, self];
+}
+
++ (instancetype)sharedCache
+{
+    static id cache;
+    static dispatch_once_t predicate;
+
+    dispatch_once(&predicate, ^{
+        cache = [[self alloc] initWithName:TMDiskCacheSharedName];
+    });
+
+    return cache;
+}
+
++ (dispatch_queue_t)sharedQueue
+{
+    static dispatch_queue_t queue;
+    static dispatch_once_t predicate;
+
+    dispatch_once(&predicate, ^{
+        queue = dispatch_queue_create([TMDiskCachePrefix UTF8String], DISPATCH_QUEUE_SERIAL);
+    });
+
+    return queue;
+}
+
+#pragma mark - Private Methods -
+
+- (NSURL *)encodedFileURLForKey:(NSString *)key
+{
+    if (![key length])
+        return nil;
+
+    return [_cacheURL URLByAppendingPathComponent:[self encodedString:key]];
+}
+
+- (NSString *)keyForEncodedFileURL:(NSURL *)url
+{
+    NSString *fileName = [url lastPathComponent];
+    if (!fileName)
+        return nil;
+
+    return [self decodedString:fileName];
+}
+
+- (NSString *)encodedString:(NSString *)string
+{
+    if (![string length])
+        return @"";
+
+    CFStringRef static const charsToEscape = CFSTR(".:/");
+    CFStringRef escapedString = CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,
+                                                                        (__bridge CFStringRef)string,
+                                                                        NULL,
+                                                                        charsToEscape,
+                                                                        kCFStringEncodingUTF8);
+    return (__bridge_transfer NSString *)escapedString;
+}
+
+- (NSString *)decodedString:(NSString *)string
+{
+    if (![string length])
+        return @"";
+
+    CFStringRef unescapedString = CFURLCreateStringByReplacingPercentEscapesUsingEncoding(kCFAllocatorDefault,
+                                                                                          (__bridge CFStringRef)string,
+                                                                                          CFSTR(""),
+                                                                                          kCFStringEncodingUTF8);
+    return (__bridge_transfer NSString *)unescapedString;
+}
+
+#pragma mark - Private Trash Methods -
+
++ (dispatch_queue_t)sharedTrashQueue
+{
+    static dispatch_queue_t trashQueue;
+    static dispatch_once_t predicate;
+    
+    dispatch_once(&predicate, ^{
+        NSString *queueName = [[NSString alloc] initWithFormat:@"%@.trash", TMDiskCachePrefix];
+        trashQueue = dispatch_queue_create([queueName UTF8String], DISPATCH_QUEUE_SERIAL);
+        dispatch_set_target_queue(trashQueue, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0));
+    });
+    
+    return trashQueue;
+}
+
++ (NSURL *)sharedTrashURL
+{
+    static NSURL *sharedTrashURL;
+    static dispatch_once_t predicate;
+    
+    dispatch_once(&predicate, ^{
+        sharedTrashURL = [[[NSURL alloc] initFileURLWithPath:NSTemporaryDirectory()] URLByAppendingPathComponent:TMDiskCachePrefix isDirectory:YES];
+        
+        if (![[NSFileManager defaultManager] fileExistsAtPath:[sharedTrashURL path]]) {
+            NSError *error = nil;
+            [[NSFileManager defaultManager] createDirectoryAtURL:sharedTrashURL
+                                     withIntermediateDirectories:YES
+                                                      attributes:nil
+                                                           error:&error];
+            TMDiskCacheError(error);
+        }
+    });
+    
+    return sharedTrashURL;
+}
+
++(BOOL)moveItemAtURLToTrash:(NSURL *)itemURL
+{
+    if (![[NSFileManager defaultManager] fileExistsAtPath:[itemURL path]])
+        return NO;
+
+    NSError *error = nil;
+    NSString *uniqueString = [[NSProcessInfo processInfo] globallyUniqueString];
+    NSURL *uniqueTrashURL = [[TMDiskCache sharedTrashURL] URLByAppendingPathComponent:uniqueString];
+    BOOL moved = [[NSFileManager defaultManager] moveItemAtURL:itemURL toURL:uniqueTrashURL error:&error];
+    TMDiskCacheError(error);
+    return moved;
+}
+
++ (void)emptyTrash
+{
+    UIBackgroundTaskIdentifier taskID = [TMCacheBackgroundTaskManager beginBackgroundTask];
+    
+    dispatch_async([self sharedTrashQueue], ^{        
+        NSError *error = nil;
+        NSArray *trashedItems = [[NSFileManager defaultManager] contentsOfDirectoryAtURL:[self sharedTrashURL]
+                                                              includingPropertiesForKeys:nil
+                                                                                 options:0
+                                                                                   error:&error];
+        TMDiskCacheError(error);
+
+        for (NSURL *trashedItemURL in trashedItems) {
+            NSError *error = nil;
+            [[NSFileManager defaultManager] removeItemAtURL:trashedItemURL error:&error];
+            TMDiskCacheError(error);
+        }
+        
+        [TMCacheBackgroundTaskManager endBackgroundTask:taskID];
+    });
+}
+
+#pragma mark - Private Queue Methods -
+
+- (BOOL)createCacheDirectory
+{
+    if ([[NSFileManager defaultManager] fileExistsAtPath:[_cacheURL path]])
+        return NO;
+
+    NSError *error = nil;
+    BOOL success = [[NSFileManager defaultManager] createDirectoryAtURL:_cacheURL
+                                            withIntermediateDirectories:YES
+                                                             attributes:nil
+                                                                  error:&error];
+    TMDiskCacheError(error);
+
+    return success;
+}
+
+- (void)initializeDiskProperties
+{
+    NSUInteger byteCount = 0;
+    NSArray *keys = @[ NSURLContentModificationDateKey, NSURLTotalFileAllocatedSizeKey ];
+
+    NSError *error = nil;
+    NSArray *files = [[NSFileManager defaultManager] contentsOfDirectoryAtURL:_cacheURL
+                                                   includingPropertiesForKeys:keys
+                                                                      options:NSDirectoryEnumerationSkipsHiddenFiles
+                                                                        error:&error];
+    TMDiskCacheError(error);
+
+    for (NSURL *fileURL in files) {
+        NSString *key = [self keyForEncodedFileURL:fileURL];
+
+        error = nil;
+        NSDictionary *dictionary = [fileURL resourceValuesForKeys:keys error:&error];
+        TMDiskCacheError(error);
+
+        NSDate *date = [dictionary objectForKey:NSURLContentModificationDateKey];
+        if (date && key)
+            [_dates setObject:date forKey:key];
+
+        NSNumber *fileSize = [dictionary objectForKey:NSURLTotalFileAllocatedSizeKey];
+        if (fileSize) {
+            [_sizes setObject:fileSize forKey:key];
+            byteCount += [fileSize unsignedIntegerValue];
+        }
+    }
+
+    if (byteCount > 0)
+        self.byteCount = byteCount; // atomic
+}
+
+- (BOOL)setFileModificationDate:(NSDate *)date forURL:(NSURL *)fileURL
+{
+    if (!date || !fileURL) {
+        return NO;
+    }
+    
+    NSError *error = nil;
+    BOOL success = [[NSFileManager defaultManager] setAttributes:@{ NSFileModificationDate: date }
+                                                    ofItemAtPath:[fileURL path]
+                                                           error:&error];
+    TMDiskCacheError(error);
+
+    if (success) {
+        NSString *key = [self keyForEncodedFileURL:fileURL];
+        if (key) {
+            [_dates setObject:date forKey:key];
+        }
+    }
+
+    return success;
+}
+
+- (BOOL)removeFileAndExecuteBlocksForKey:(NSString *)key
+{
+    NSURL *fileURL = [self encodedFileURLForKey:key];
+    if (!fileURL || ![[NSFileManager defaultManager] fileExistsAtPath:[fileURL path]])
+        return NO;
+
+    if (_willRemoveObjectBlock)
+        _willRemoveObjectBlock(self, key, nil, fileURL);
+
+    BOOL trashed = [TMDiskCache moveItemAtURLToTrash:fileURL];
+    if (!trashed)
+        return NO;
+    
+    [TMDiskCache emptyTrash];
+
+    NSNumber *byteSize = [_sizes objectForKey:key];
+    if (byteSize)
+        self.byteCount = _byteCount - [byteSize unsignedIntegerValue]; // atomic
+
+    [_sizes removeObjectForKey:key];
+    [_dates removeObjectForKey:key];
+
+    if (_didRemoveObjectBlock)
+        _didRemoveObjectBlock(self, key, nil, fileURL);
+
+    return YES;
+}
+
+- (void)trimDiskToSize:(NSUInteger)trimByteCount
+{
+    if (_byteCount <= trimByteCount)
+        return;
+
+    NSArray *keysSortedBySize = [_sizes keysSortedByValueUsingSelector:@selector(compare:)];
+
+    for (NSString *key in [keysSortedBySize reverseObjectEnumerator]) { // largest objects first
+        [self removeFileAndExecuteBlocksForKey:key];
+
+        if (_byteCount <= trimByteCount)
+            break;
+    }
+}
+
+- (void)trimDiskToSizeByDate:(NSUInteger)trimByteCount
+{
+    if (_byteCount <= trimByteCount)
+        return;
+
+    NSArray *keysSortedByDate = [_dates keysSortedByValueUsingSelector:@selector(compare:)];
+
+    for (NSString *key in keysSortedByDate) { // oldest objects first
+        [self removeFileAndExecuteBlocksForKey:key];
+
+        if (_byteCount <= trimByteCount)
+            break;
+    }
+}
+
+- (void)trimDiskToDate:(NSDate *)trimDate
+{
+    NSArray *keysSortedByDate = [_dates keysSortedByValueUsingSelector:@selector(compare:)];
+    
+    for (NSString *key in keysSortedByDate) { // oldest files first
+        NSDate *accessDate = [_dates objectForKey:key];
+        if (!accessDate)
+            continue;
+        
+        if ([accessDate compare:trimDate] == NSOrderedAscending) { // older than trim date
+            [self removeFileAndExecuteBlocksForKey:key];
+        } else {
+            break;
+        }
+    }
+}
+
+- (void)trimToAgeLimitRecursively
+{
+    if (_ageLimit == 0.0)
+        return;
+    
+    NSDate *date = [[NSDate alloc] initWithTimeIntervalSinceNow:-_ageLimit];
+    [self trimDiskToDate:date];
+    
+    __weak TMDiskCache *weakSelf = self;
+    
+    dispatch_time_t time = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(_ageLimit * NSEC_PER_SEC));
+    dispatch_after(time, _queue, ^(void) {
+        TMDiskCache *strongSelf = weakSelf;
+        [strongSelf trimToAgeLimitRecursively];
+    });
+}
+
+#pragma mark - Public Asynchronous Methods -
+
+- (void)objectForKey:(NSString *)key block:(TMDiskCacheObjectBlock)block
+{
+    NSDate *now = [[NSDate alloc] init];
+
+    if (!key || !block)
+        return;
+
+    __weak TMDiskCache *weakSelf = self;
+
+    dispatch_async(_queue, ^{
+        TMDiskCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        NSURL *fileURL = [strongSelf encodedFileURLForKey:key];
+        id <NSCoding> object = nil;
+
+        if ([[NSFileManager defaultManager] fileExistsAtPath:[fileURL path]]) {
+            @try {
+                object = [NSKeyedUnarchiver unarchiveObjectWithFile:[fileURL path]];
+            }
+            @catch (NSException *exception) {
+                NSError *error = nil;
+                [[NSFileManager defaultManager] removeItemAtPath:[fileURL path] error:&error];
+                TMDiskCacheError(error);
+            }
+
+            [strongSelf setFileModificationDate:now forURL:fileURL];
+        }
+
+        block(strongSelf, key, object, fileURL);
+    });
+}
+
+- (void)fileURLForKey:(NSString *)key block:(TMDiskCacheObjectBlock)block
+{
+    NSDate *now = [[NSDate alloc] init];
+
+    if (!key || !block)
+        return;
+
+    __weak TMDiskCache *weakSelf = self;
+
+    dispatch_async(_queue, ^{
+        TMDiskCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        NSURL *fileURL = [strongSelf encodedFileURLForKey:key];
+
+        if ([[NSFileManager defaultManager] fileExistsAtPath:[fileURL path]]) {
+            [strongSelf setFileModificationDate:now forURL:fileURL];
+        } else {
+            fileURL = nil;
+        }
+
+        block(strongSelf, key, nil, fileURL);
+    });
+}
+
+- (void)setObject:(id <NSCoding>)object forKey:(NSString *)key block:(TMDiskCacheObjectBlock)block
+{
+    NSDate *now = [[NSDate alloc] init];
+
+    if (!key || !object)
+        return;
+
+    UIBackgroundTaskIdentifier taskID = [TMCacheBackgroundTaskManager beginBackgroundTask];
+
+    __weak TMDiskCache *weakSelf = self;
+
+    dispatch_async(_queue, ^{
+        TMDiskCache *strongSelf = weakSelf;
+        if (!strongSelf) {
+            [TMCacheBackgroundTaskManager endBackgroundTask:taskID];
+            return;
+        }
+
+        NSURL *fileURL = [strongSelf encodedFileURLForKey:key];
+
+        if (strongSelf->_willAddObjectBlock)
+            strongSelf->_willAddObjectBlock(strongSelf, key, object, fileURL);
+
+        BOOL written = [NSKeyedArchiver archiveRootObject:object toFile:[fileURL path]];
+
+        if (written) {
+            [strongSelf setFileModificationDate:now forURL:fileURL];
+
+            NSError *error = nil;
+            NSDictionary *values = [fileURL resourceValuesForKeys:@[ NSURLTotalFileAllocatedSizeKey ] error:&error];
+            TMDiskCacheError(error);
+
+            NSNumber *diskFileSize = [values objectForKey:NSURLTotalFileAllocatedSizeKey];
+            if (diskFileSize) {
+                NSNumber *oldEntry = [strongSelf->_sizes objectForKey:key];
+                
+                if ([oldEntry isKindOfClass:[NSNumber class]]){
+                    strongSelf.byteCount = strongSelf->_byteCount - [oldEntry unsignedIntegerValue];
+                }
+                
+                [strongSelf->_sizes setObject:diskFileSize forKey:key];
+                strongSelf.byteCount = strongSelf->_byteCount + [diskFileSize unsignedIntegerValue]; // atomic
+            }
+            
+            if (strongSelf->_byteLimit > 0 && strongSelf->_byteCount > strongSelf->_byteLimit)
+                [strongSelf trimToSizeByDate:strongSelf->_byteLimit block:nil];
+        } else {
+            fileURL = nil;
+        }
+
+        if (strongSelf->_didAddObjectBlock)
+            strongSelf->_didAddObjectBlock(strongSelf, key, object, written ? fileURL : nil);
+
+        if (block)
+            block(strongSelf, key, object, fileURL);
+
+        [TMCacheBackgroundTaskManager endBackgroundTask:taskID];
+    });
+}
+
+- (void)removeObjectForKey:(NSString *)key block:(TMDiskCacheObjectBlock)block
+{
+    if (!key)
+        return;
+
+    UIBackgroundTaskIdentifier taskID = [TMCacheBackgroundTaskManager beginBackgroundTask];
+
+    __weak TMDiskCache *weakSelf = self;
+
+    dispatch_async(_queue, ^{
+        TMDiskCache *strongSelf = weakSelf;
+        if (!strongSelf) {
+            [TMCacheBackgroundTaskManager endBackgroundTask:taskID];
+            return;
+        }
+
+        NSURL *fileURL = [strongSelf encodedFileURLForKey:key];
+        [strongSelf removeFileAndExecuteBlocksForKey:key];
+
+        if (block)
+            block(strongSelf, key, nil, fileURL);
+
+        [TMCacheBackgroundTaskManager endBackgroundTask:taskID];
+    });
+}
+
+- (void)trimToSize:(NSUInteger)trimByteCount block:(TMDiskCacheBlock)block
+{
+    if (trimByteCount == 0) {
+        [self removeAllObjects:block];
+        return;
+    }
+
+    UIBackgroundTaskIdentifier taskID = [TMCacheBackgroundTaskManager beginBackgroundTask];
+    
+    __weak TMDiskCache *weakSelf = self;
+    
+    dispatch_async(_queue, ^{
+        TMDiskCache *strongSelf = weakSelf;
+        if (!strongSelf) {
+            [TMCacheBackgroundTaskManager endBackgroundTask:taskID];
+            return;
+        }
+
+        [strongSelf trimDiskToSize:trimByteCount];
+
+        if (block)
+            block(strongSelf);
+        
+        [TMCacheBackgroundTaskManager endBackgroundTask:taskID];
+    });
+}
+
+- (void)trimToDate:(NSDate *)trimDate block:(TMDiskCacheBlock)block
+{
+    if (!trimDate)
+        return;
+
+    if ([trimDate isEqualToDate:[NSDate distantPast]]) {
+        [self removeAllObjects:block];
+        return;
+    }
+    
+    UIBackgroundTaskIdentifier taskID = [TMCacheBackgroundTaskManager beginBackgroundTask];
+
+    __weak TMDiskCache *weakSelf = self;
+
+    dispatch_async(_queue, ^{
+        TMDiskCache *strongSelf = weakSelf;
+        if (!strongSelf) {
+            [TMCacheBackgroundTaskManager endBackgroundTask:taskID];
+            return;
+        }
+
+        [strongSelf trimDiskToDate:trimDate];
+
+        if (block)
+            block(strongSelf);
+        
+        [TMCacheBackgroundTaskManager endBackgroundTask:taskID];
+    });
+}
+
+- (void)trimToSizeByDate:(NSUInteger)trimByteCount block:(TMDiskCacheBlock)block
+{
+    if (trimByteCount == 0) {
+        [self removeAllObjects:block];
+        return;
+    }
+
+    UIBackgroundTaskIdentifier taskID = [TMCacheBackgroundTaskManager beginBackgroundTask];
+
+    __weak TMDiskCache *weakSelf = self;
+
+    dispatch_async(_queue, ^{
+        TMDiskCache *strongSelf = weakSelf;
+        if (!strongSelf) {
+            [TMCacheBackgroundTaskManager endBackgroundTask:taskID];
+            return;
+        }
+
+        [strongSelf trimDiskToSizeByDate:trimByteCount];
+
+        if (block)
+            block(strongSelf);
+
+        [TMCacheBackgroundTaskManager endBackgroundTask:taskID];
+    });
+}
+
+- (void)removeAllObjects:(TMDiskCacheBlock)block
+{
+    UIBackgroundTaskIdentifier taskID = [TMCacheBackgroundTaskManager beginBackgroundTask];
+    
+    __weak TMDiskCache *weakSelf = self;
+
+    dispatch_async(_queue, ^{
+        TMDiskCache *strongSelf = weakSelf;
+        if (!strongSelf) {
+            [TMCacheBackgroundTaskManager endBackgroundTask:taskID];
+            return;
+        }
+
+        if (strongSelf->_willRemoveAllObjectsBlock)
+            strongSelf->_willRemoveAllObjectsBlock(strongSelf);
+        
+        [TMDiskCache moveItemAtURLToTrash:strongSelf->_cacheURL];
+        [TMDiskCache emptyTrash];
+
+        [strongSelf createCacheDirectory];
+
+        [strongSelf->_dates removeAllObjects];
+        [strongSelf->_sizes removeAllObjects];
+        strongSelf.byteCount = 0; // atomic
+
+        if (strongSelf->_didRemoveAllObjectsBlock)
+            strongSelf->_didRemoveAllObjectsBlock(strongSelf);
+
+        if (block)
+            block(strongSelf);
+        
+        [TMCacheBackgroundTaskManager endBackgroundTask:taskID];
+    });
+}
+
+- (void)enumerateObjectsWithBlock:(TMDiskCacheObjectBlock)block completionBlock:(TMDiskCacheBlock)completionBlock
+{
+    if (!block)
+        return;
+
+    UIBackgroundTaskIdentifier taskID = [TMCacheBackgroundTaskManager beginBackgroundTask];
+
+    __weak TMDiskCache *weakSelf = self;
+
+    dispatch_async(_queue, ^{
+        TMDiskCache *strongSelf = weakSelf;
+        if (!strongSelf) {
+            [TMCacheBackgroundTaskManager endBackgroundTask:taskID];
+            return;
+        }
+
+        NSArray *keysSortedByDate = [strongSelf->_dates keysSortedByValueUsingSelector:@selector(compare:)];
+
+        for (NSString *key in keysSortedByDate) {
+            NSURL *fileURL = [strongSelf encodedFileURLForKey:key];
+            block(strongSelf, key, nil, fileURL);
+        }
+
+        if (completionBlock)
+            completionBlock(strongSelf);
+
+        [TMCacheBackgroundTaskManager endBackgroundTask:taskID];
+    });
+}
+
+#pragma mark - Public Synchronous Methods -
+
+- (id <NSCoding>)objectForKey:(NSString *)key
+{
+    if (!key)
+        return nil;
+
+    __block id <NSCoding> objectForKey = nil;
+
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+
+    [self objectForKey:key block:^(TMDiskCache *cache, NSString *key, id <NSCoding> object, NSURL *fileURL) {
+        objectForKey = object;
+        dispatch_semaphore_signal(semaphore);
+    }];
+    
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+    #if !OS_OBJECT_USE_OBJC
+    dispatch_release(semaphore);
+    #endif
+
+    return objectForKey;
+}
+
+- (NSURL *)fileURLForKey:(NSString *)key
+{
+    if (!key)
+        return nil;
+
+    __block NSURL *fileURLForKey = nil;
+
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+
+    [self fileURLForKey:key block:^(TMDiskCache *cache, NSString *key, id <NSCoding> object, NSURL *fileURL) {
+        fileURLForKey = fileURL;
+        dispatch_semaphore_signal(semaphore);
+    }];
+
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+    #if !OS_OBJECT_USE_OBJC
+    dispatch_release(semaphore);
+    #endif
+
+    return fileURLForKey;
+}
+
+- (void)setObject:(id <NSCoding>)object forKey:(NSString *)key
+{
+    if (!object || !key)
+        return;
+    
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+
+    [self setObject:object forKey:key block:^(TMDiskCache *cache, NSString *key, id <NSCoding> object, NSURL *fileURL) {
+        dispatch_semaphore_signal(semaphore);
+    }];
+
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+    #if !OS_OBJECT_USE_OBJC
+    dispatch_release(semaphore);
+    #endif
+}
+
+- (void)removeObjectForKey:(NSString *)key
+{
+    if (!key)
+        return;
+    
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+
+    [self removeObjectForKey:key block:^(TMDiskCache *cache, NSString *key, id <NSCoding> object, NSURL *fileURL) {
+        dispatch_semaphore_signal(semaphore);
+    }];
+
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+    #if !OS_OBJECT_USE_OBJC
+    dispatch_release(semaphore);
+    #endif
+}
+
+- (void)trimToSize:(NSUInteger)byteCount
+{
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+
+    [self trimToSize:byteCount block:^(TMDiskCache *cache) {
+        dispatch_semaphore_signal(semaphore);
+    }];
+
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+    #if !OS_OBJECT_USE_OBJC
+    dispatch_release(semaphore);
+    #endif
+}
+
+- (void)trimToDate:(NSDate *)date
+{
+    if (!date)
+        return;
+
+    if ([date isEqualToDate:[NSDate distantPast]]) {
+        [self removeAllObjects];
+        return;
+    }
+
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+
+    [self trimToDate:date block:^(TMDiskCache *cache) {
+        dispatch_semaphore_signal(semaphore);
+    }];
+
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+    #if !OS_OBJECT_USE_OBJC
+    dispatch_release(semaphore);
+    #endif
+}
+
+- (void)trimToSizeByDate:(NSUInteger)byteCount
+{
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+
+    [self trimToSizeByDate:byteCount block:^(TMDiskCache *cache) {
+        dispatch_semaphore_signal(semaphore);
+    }];
+
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+    #if !OS_OBJECT_USE_OBJC
+    dispatch_release(semaphore);
+    #endif
+}
+
+- (void)removeAllObjects
+{
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+
+    [self removeAllObjects:^(TMDiskCache *cache) {
+        dispatch_semaphore_signal(semaphore);
+    }];
+
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+    #if !OS_OBJECT_USE_OBJC
+    dispatch_release(semaphore);
+    #endif
+}
+
+- (void)enumerateObjectsWithBlock:(TMDiskCacheObjectBlock)block
+{
+    if (!block)
+        return;
+
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+
+    [self enumerateObjectsWithBlock:block completionBlock:^(TMDiskCache *cache) {
+        dispatch_semaphore_signal(semaphore);
+    }];
+
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+    #if !OS_OBJECT_USE_OBJC
+    dispatch_release(semaphore);
+    #endif
+}
+
+#pragma mark - Public Thread Safe Accessors -
+
+- (TMDiskCacheObjectBlock)willAddObjectBlock
+{
+    __block TMDiskCacheObjectBlock block = nil;
+
+    dispatch_sync(_queue, ^{
+        block = _willAddObjectBlock;
+    });
+
+    return block;
+}
+
+- (void)setWillAddObjectBlock:(TMDiskCacheObjectBlock)block
+{
+    __weak TMDiskCache *weakSelf = self;
+
+    dispatch_async(_queue, ^{
+        TMDiskCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        strongSelf->_willAddObjectBlock = [block copy];
+    });
+}
+
+- (TMDiskCacheObjectBlock)willRemoveObjectBlock
+{
+    __block TMDiskCacheObjectBlock block = nil;
+
+    dispatch_sync(_queue, ^{
+        block = _willRemoveObjectBlock;
+    });
+
+    return block;
+}
+
+- (void)setWillRemoveObjectBlock:(TMDiskCacheObjectBlock)block
+{
+    __weak TMDiskCache *weakSelf = self;
+
+    dispatch_async(_queue, ^{
+        TMDiskCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        strongSelf->_willRemoveObjectBlock = [block copy];
+    });
+}
+
+- (TMDiskCacheBlock)willRemoveAllObjectsBlock
+{
+    __block TMDiskCacheBlock block = nil;
+
+    dispatch_sync(_queue, ^{
+        block = _willRemoveAllObjectsBlock;
+    });
+
+    return block;
+}
+
+- (void)setWillRemoveAllObjectsBlock:(TMDiskCacheBlock)block
+{
+    __weak TMDiskCache *weakSelf = self;
+
+    dispatch_async(_queue, ^{
+        TMDiskCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        strongSelf->_willRemoveAllObjectsBlock = [block copy];
+    });
+}
+
+- (TMDiskCacheObjectBlock)didAddObjectBlock
+{
+    __block TMDiskCacheObjectBlock block = nil;
+
+    dispatch_sync(_queue, ^{
+        block = _didAddObjectBlock;
+    });
+
+    return block;
+}
+
+- (void)setDidAddObjectBlock:(TMDiskCacheObjectBlock)block
+{
+    __weak TMDiskCache *weakSelf = self;
+
+    dispatch_async(_queue, ^{
+        TMDiskCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        strongSelf->_didAddObjectBlock = [block copy];
+    });
+}
+
+- (TMDiskCacheObjectBlock)didRemoveObjectBlock
+{
+    __block TMDiskCacheObjectBlock block = nil;
+
+    dispatch_sync(_queue, ^{
+        block = _didRemoveObjectBlock;
+    });
+
+    return block;
+}
+
+- (void)setDidRemoveObjectBlock:(TMDiskCacheObjectBlock)block
+{
+    __weak TMDiskCache *weakSelf = self;
+
+    dispatch_async(_queue, ^{
+        TMDiskCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        strongSelf->_didRemoveObjectBlock = [block copy];
+    });
+}
+
+- (TMDiskCacheBlock)didRemoveAllObjectsBlock
+{
+    __block TMDiskCacheBlock block = nil;
+
+    dispatch_sync(_queue, ^{
+        block = _didRemoveAllObjectsBlock;
+    });
+
+    return block;
+}
+
+- (void)setDidRemoveAllObjectsBlock:(TMDiskCacheBlock)block
+{
+    __weak TMDiskCache *weakSelf = self;
+
+    dispatch_async(_queue, ^{
+        TMDiskCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        strongSelf->_didRemoveAllObjectsBlock = [block copy];
+    });
+}
+
+- (NSUInteger)byteLimit
+{
+    __block NSUInteger byteLimit = 0;
+    
+    dispatch_sync(_queue, ^{
+        byteLimit = _byteLimit;
+    });
+    
+    return byteLimit;
+}
+
+- (void)setByteLimit:(NSUInteger)byteLimit
+{
+    __weak TMDiskCache *weakSelf = self;
+    
+    dispatch_barrier_async(_queue, ^{
+        TMDiskCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+        
+        strongSelf->_byteLimit = byteLimit;
+
+        if (byteLimit > 0)
+            [strongSelf trimDiskToSizeByDate:byteLimit];
+    });
+}
+
+- (NSTimeInterval)ageLimit
+{
+    __block NSTimeInterval ageLimit = 0.0;
+    
+    dispatch_sync(_queue, ^{
+        ageLimit = _ageLimit;
+    });
+    
+    return ageLimit;
+}
+
+- (void)setAgeLimit:(NSTimeInterval)ageLimit
+{
+    __weak TMDiskCache *weakSelf = self;
+    
+    dispatch_barrier_async(_queue, ^{
+        TMDiskCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+        
+        strongSelf->_ageLimit = ageLimit;
+        
+        [strongSelf trimToAgeLimitRecursively];
+    });
+}
+
+#pragma mark - Background Tasks -
+
++ (void)setBackgroundTaskManager:(id <TMCacheBackgroundTaskManager>)backgroundTaskManager {
+    TMCacheBackgroundTaskManager = backgroundTaskManager;
+}
+
+@end

Example/Pods/TMCache/TMCache/TMMemoryCache.h

+/**
+ `TMMemoryCache` is a fast, thread safe key/value store similar to `NSCache`. On iOS it will clear itself
+ automatically to reduce memory usage when the app receives a memory warning or goes into the background.
+
+ Access is natively asynchronous. Every method accepts a callback block that runs on a concurrent
+ <queue>, with cache writes protected by GCD barriers. Synchronous variations are provided.
+ 
+ All access to the cache is dated so the that the least-used objects can be trimmed first. Setting an
+ optional <ageLimit> will trigger a GCD timer to periodically to trim the cache to that age.
+ 
+ Objects can optionally be set with a "cost", which could be a byte count or any other meaningful integer.
+ Setting a <costLimit> will automatically keep the cache below that value with <trimToCostByDate:>.
+
+ Values will not persist after application relaunch or returning from the background. See <TMCache> for
+ a memory cache backed by a disk cache.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class TMMemoryCache;
+
+typedef void (^TMMemoryCacheBlock)(TMMemoryCache *cache);
+typedef void (^TMMemoryCacheObjectBlock)(TMMemoryCache *cache, NSString *key, id object);
+
+@interface TMMemoryCache : NSObject
+
+#pragma mark -
+/// @name Core
+
+/**
+ A concurrent queue on which all work is done. It is exposed here so that it can be set to target some
+ other queue, such as a global concurrent queue with a priority other than the default.
+ */
+@property (readonly) dispatch_queue_t queue;
+
+/**
+ The total accumulated cost.
+ */
+@property (readonly) NSUInteger totalCost;
+
+/**
+ The maximum cost allowed to accumulate before objects begin to be removed with <trimToCostByDate:>.
+ */
+@property (assign) NSUInteger costLimit;
+
+/**
+ The maximum number of seconds an object is allowed to exist in the cache. Setting this to a value
+ greater than `0.0` will start a recurring GCD timer with the same period that calls <trimToDate:>.
+ Setting it back to `0.0` will stop the timer. Defaults to `0.0`.
+ */
+@property (assign) NSTimeInterval ageLimit;
+
+/**
+ When `YES` on iOS the cache will remove all objects when the app receives a memory warning.
+ Defaults to `YES`.
+ */
+@property (assign) BOOL removeAllObjectsOnMemoryWarning;
+
+/**
+ When `YES` on iOS the cache will remove all objects when the app enters the background.
+ Defaults to `YES`.
+ */
+@property (assign) BOOL removeAllObjectsOnEnteringBackground;
+
+#pragma mark -
+/// @name Event Blocks
+
+/**
+ A block to be executed just before an object is added to the cache. This block will be excuted within
+ a barrier, i.e. all reads and writes are suspended for the duration of the block.
+ */
+@property (copy) TMMemoryCacheObjectBlock willAddObjectBlock;
+
+/**
+ A block to be executed just before an object is removed from the cache. This block will be excuted
+ within a barrier, i.e. all reads and writes are suspended for the duration of the block.
+ */
+@property (copy) TMMemoryCacheObjectBlock willRemoveObjectBlock;
+
+/**
+ A block to be executed just before all objects are removed from the cache as a result of <removeAllObjects:>.
+ This block will be excuted within a barrier, i.e. all reads and writes are suspended for the duration of the block.
+ */
+@property (copy) TMMemoryCacheBlock willRemoveAllObjectsBlock;
+
+/**
+ A block to be executed just after an object is added to the cache. This block will be excuted within
+ a barrier, i.e. all reads and writes are suspended for the duration of the block.
+ */
+@property (copy) TMMemoryCacheObjectBlock didAddObjectBlock;
+
+/**
+ A block to be executed just after an object is removed from the cache. This block will be excuted
+ within a barrier, i.e. all reads and writes are suspended for the duration of the block.
+ */
+@property (copy) TMMemoryCacheObjectBlock didRemoveObjectBlock;
+
+/**
+ A block to be executed just after all objects are removed from the cache as a result of <removeAllObjects:>.
+ This block will be excuted within a barrier, i.e. all reads and writes are suspended for the duration of the block.
+ */
+@property (copy) TMMemoryCacheBlock didRemoveAllObjectsBlock;
+
+/**
+ A block to be executed upon receiving a memory warning (iOS only) potentially in parallel with other blocks on the <queue>.
+ This block will be executed regardless of the value of <removeAllObjectsOnMemoryWarning>. Defaults to `nil`.
+ */
+@property (copy) TMMemoryCacheBlock didReceiveMemoryWarningBlock;
+
+/**
+ A block to be executed when the app enters the background (iOS only) potentially in parallel with other blocks on the <queue>.
+ This block will be executed regardless of the value of <removeAllObjectsOnEnteringBackground>. Defaults to `nil`.
+ */
+@property (copy) TMMemoryCacheBlock didEnterBackgroundBlock;
+
+#pragma mark -
+/// @name Shared Cache
+
+/**
+ A shared cache.
+ 
+ @result The shared singleton cache instance.
+ */
++ (instancetype)sharedCache;
+
+#pragma mark -
+/// @name Asynchronous Methods
+
+/**
+ Retrieves the object for the specified key. This method returns immediately and executes the passed
+ block after the object is available, potentially in parallel with other blocks on the <queue>.
+ 
+ @param key The key associated with the requested object.
+ @param block A block to be executed concurrently when the object is available.
+ */
+- (void)objectForKey:(NSString *)key block:(TMMemoryCacheObjectBlock)block;
+
+/**
+ Stores an object in the cache for the specified key. This method returns immediately and executes the
+ passed block after the object has been stored, potentially in parallel with other blocks on the <queue>.
+ 
+ @param object An object to store in the cache.
+ @param key A key to associate with the object. This string will be copied.
+ @param block A block to be executed concurrently after the object has been stored, or nil.
+ */
+- (void)setObject:(id)object forKey:(NSString *)key block:(TMMemoryCacheObjectBlock)block;
+
+/**
+ Stores an object in the cache for the specified key and the specified cost. If the cost causes the total
+ to go over the <costLimit> the cache is trimmed (oldest objects first). This method returns immediately
+ and executes the passed block after the object has been stored, potentially in parallel with other blocks
+ on the <queue>.
+ 
+ @param object An object to store in the cache.
+ @param key A key to associate with the object. This string will be copied.
+ @param cost An amount to add to the <totalCost>.
+ @param block A block to be executed concurrently after the object has been stored, or nil.
+ */
+- (void)setObject:(id)object forKey:(NSString *)key withCost:(NSUInteger)cost block:(TMMemoryCacheObjectBlock)block;
+
+/**
+ Removes the object for the specified key. This method returns immediately and executes the passed
+ block after the object has been removed, potentially in parallel with other blocks on the <queue>.
+ 
+ @param key The key associated with the object to be removed.
+ @param block A block to be executed concurrently after the object has been removed, or nil.
+ */
+- (void)removeObjectForKey:(NSString *)key block:(TMMemoryCacheObjectBlock)block;
+
+/**
+ Removes all objects from the cache that have not been used since the specified date.
+ This method returns immediately and executes the passed block after the cache has been trimmed,
+ potentially in parallel with other blocks on the <queue>.
+ 
+ @param date Objects that haven't been accessed since this date are removed from the cache.
+ @param block A block to be executed concurrently after the cache has been trimmed, or nil.
+ */
+- (void)trimToDate:(NSDate *)date block:(TMMemoryCacheBlock)block;
+
+/**
+ Removes objects from the cache, costliest objects first, until the <totalCost> is below the specified
+ value. This method returns immediately and executes the passed block after the cache has been trimmed,
+ potentially in parallel with other blocks on the <queue>.
+ 
+ @param cost The total accumulation allowed to remain after the cache has been trimmed.
+ @param block A block to be executed concurrently after the cache has been trimmed, or nil.
+ */
+- (void)trimToCost:(NSUInteger)cost block:(TMMemoryCacheBlock)block;
+
+/**
+ Removes objects from the cache, ordered by date (least recently used first), until the <totalCost> is below
+ the specified value. This method returns immediately and executes the passed block after the cache has been
+ trimmed, potentially in parallel with other blocks on the <queue>.
+
+ @param cost The total accumulation allowed to remain after the cache has been trimmed.
+ @param block A block to be executed concurrently after the cache has been trimmed, or nil.
+ */
+- (void)trimToCostByDate:(NSUInteger)cost block:(TMMemoryCacheBlock)block;
+
+/**
+ Removes all objects from the cache. This method returns immediately and executes the passed block after
+ the cache has been cleared, potentially in parallel with other blocks on the <queue>.
+ 
+ @param block A block to be executed concurrently after the cache has been cleared, or nil.
+ */
+- (void)removeAllObjects:(TMMemoryCacheBlock)block;
+
+/**
+ Loops through all objects in the cache within a memory barrier (reads and writes are suspended during the enumeration).
+ This method returns immediately.
+
+ @param block A block to be executed for every object in the cache.
+ @param completionBlock An optional block to be executed concurrently when the enumeration is complete.
+ */
+- (void)enumerateObjectsWithBlock:(TMMemoryCacheObjectBlock)block completionBlock:(TMMemoryCacheBlock)completionBlock;
+
+#pragma mark -
+/// @name Synchronous Methods
+
+/**
+ Retrieves the object for the specified key. This method blocks the calling thread until the
+ object is available.
+ 
+ @see objectForKey:block:
+ @param key The key associated with the object.
+ @result The object for the specified key.
+ */
+- (id)objectForKey:(NSString *)key;
+
+/**
+ Stores an object in the cache for the specified key. This method blocks the calling thread until the object
+ has been set.
+
+ @see setObject:forKey:block:
+ @param object An object to store in the cache.
+ @param key A key to associate with the object. This string will be copied.
+ */
+- (void)setObject:(id)object forKey:(NSString *)key;
+
+/**
+ Stores an object in the cache for the specified key and the specified cost. If the cost causes the total
+ to go over the <costLimit> the cache is trimmed (oldest objects first). This method blocks the calling thread
+ until the object has been stored.
+
+ @param object An object to store in the cache.
+ @param key A key to associate with the object. This string will be copied.
+ @param cost An amount to add to the <totalCost>.
+ */
+- (void)setObject:(id)object forKey:(NSString *)key withCost:(NSUInteger)cost;
+
+/**
+ Removes the object for the specified key. This method blocks the calling thread until the object
+ has been removed.
+ 
+ @param key The key associated with the object to be removed.
+ */
+- (void)removeObjectForKey:(NSString *)key;
+
+/**
+ Removes all objects from the cache that have not been used since the specified date.
+ This method blocks the calling thread until the cache has been trimmed.
+ 
+ @param date Objects that haven't been accessed since this date are removed from the cache.
+ */
+- (void)trimToDate:(NSDate *)date;
+
+/**
+ Removes objects from the cache, costliest objects first, until the <totalCost> is below the specified
+ value. This method blocks the calling thread until the cache has been trimmed.
+ 
+ @param cost The total accumulation allowed to remain after the cache has been trimmed.
+ */
+- (void)trimToCost:(NSUInteger)cost;
+
+/**
+ Removes objects from the cache, ordered by date (least recently used first), until the <totalCost> is below
+ the specified value. This method blocks the calling thread until the cache has been trimmed.
+
+ @param cost The total accumulation allowed to remain after the cache has been trimmed.
+ */
+- (void)trimToCostByDate:(NSUInteger)cost;
+
+/**
+ Removes all objects from the cache. This method blocks the calling thread until the cache has been cleared.
+ */
+- (void)removeAllObjects;
+
+/**
+ Loops through all objects in the cache within a memory barrier (reads and writes are suspended during the enumeration).
+ This method blocks the calling thread until all objects have been enumerated.
+
+ @param block A block to be executed for every object in the cache.
+ 
+ @warning Do not call this method within the event blocks (<didReceiveMemoryWarningBlock>, etc.)
+ Instead use the asynchronous version, <enumerateObjectsWithBlock:completionBlock:>.
+ 
+ */
+- (void)enumerateObjectsWithBlock:(TMMemoryCacheObjectBlock)block;
+
+/**
+ Handle a memory warning.
+ */
+- (void)handleMemoryWarning __deprecated_msg("This happens automatically in TMCache 2.1. There’s no longer a need to call it directly.");
+
+/**
+ Handle the application having been backgrounded.
+ */
+- (void)handleApplicationBackgrounding __deprecated_msg("This happens automatically in TMCache 2.1. There’s no longer a need to call it directly.");
+
+@end

Example/Pods/TMCache/TMCache/TMMemoryCache.m

+#import "TMMemoryCache.h"
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_4_0
+#import <UIKit/UIKit.h>
+#endif
+
+NSString * const TMMemoryCachePrefix = @"com.tumblr.TMMemoryCache";
+
+@interface TMMemoryCache ()
+#if OS_OBJECT_USE_OBJC
+@property (strong, nonatomic) dispatch_queue_t queue;
+#else
+@property (assign, nonatomic) dispatch_queue_t queue;
+#endif
+@property (strong, nonatomic) NSMutableDictionary *dictionary;
+@property (strong, nonatomic) NSMutableDictionary *dates;
+@property (strong, nonatomic) NSMutableDictionary *costs;
+@end
+
+@implementation TMMemoryCache
+
+@synthesize ageLimit = _ageLimit;
+@synthesize costLimit = _costLimit;
+@synthesize totalCost = _totalCost;
+@synthesize willAddObjectBlock = _willAddObjectBlock;
+@synthesize willRemoveObjectBlock = _willRemoveObjectBlock;
+@synthesize willRemoveAllObjectsBlock = _willRemoveAllObjectsBlock;
+@synthesize didAddObjectBlock = _didAddObjectBlock;
+@synthesize didRemoveObjectBlock = _didRemoveObjectBlock;
+@synthesize didRemoveAllObjectsBlock = _didRemoveAllObjectsBlock;
+@synthesize didReceiveMemoryWarningBlock = _didReceiveMemoryWarningBlock;
+@synthesize didEnterBackgroundBlock = _didEnterBackgroundBlock;
+
+#pragma mark - Initialization -
+
+- (void)dealloc
+{
+    [[NSNotificationCenter defaultCenter] removeObserver:self];
+
+    #if !OS_OBJECT_USE_OBJC
+    dispatch_release(_queue);
+    _queue = nil;
+    #endif
+}
+
+- (id)init
+{
+    if (self = [super init]) {
+        NSString *queueName = [[NSString alloc] initWithFormat:@"%@.%p", TMMemoryCachePrefix, self];
+        _queue = dispatch_queue_create([queueName UTF8String], DISPATCH_QUEUE_CONCURRENT);
+
+        _dictionary = [[NSMutableDictionary alloc] init];
+        _dates = [[NSMutableDictionary alloc] init];
+        _costs = [[NSMutableDictionary alloc] init];
+
+        _willAddObjectBlock = nil;
+        _willRemoveObjectBlock = nil;
+        _willRemoveAllObjectsBlock = nil;
+
+        _didAddObjectBlock = nil;
+        _didRemoveObjectBlock = nil;
+        _didRemoveAllObjectsBlock = nil;
+
+        _didReceiveMemoryWarningBlock = nil;
+        _didEnterBackgroundBlock = nil;
+
+        _ageLimit = 0.0;
+        _costLimit = 0;
+        _totalCost = 0;
+
+        _removeAllObjectsOnMemoryWarning = YES;
+        _removeAllObjectsOnEnteringBackground = YES;
+        
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_4_0
+        [[NSNotificationCenter defaultCenter] addObserver:self
+                                                 selector:@selector(handleMemoryWarning)
+                                                     name:UIApplicationDidReceiveMemoryWarningNotification
+                                                   object:nil];
+        
+        [[NSNotificationCenter defaultCenter] addObserver:self
+                                                 selector:@selector(handleApplicationBackgrounding)
+                                                     name:UIApplicationDidEnterBackgroundNotification
+                                                   object:nil];
+#endif
+    }
+    return self;
+}
+
++ (instancetype)sharedCache
+{
+    static id cache;
+    static dispatch_once_t predicate;
+
+    dispatch_once(&predicate, ^{
+        cache = [[self alloc] init];
+    });
+
+    return cache;
+}
+
+#pragma mark - Private Methods -
+
+- (void)handleMemoryWarning
+{
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_4_0
+    
+    if (self.removeAllObjectsOnMemoryWarning)
+        [self removeAllObjects:nil];
+    
+    __weak TMMemoryCache *weakSelf = self;
+    
+    dispatch_async(_queue, ^{
+        TMMemoryCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+        
+        if (strongSelf->_didReceiveMemoryWarningBlock)
+            strongSelf->_didReceiveMemoryWarningBlock(strongSelf);
+    });
+    
+#endif
+}
+
+- (void)handleApplicationBackgrounding
+{
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_4_0
+    
+    if (self.removeAllObjectsOnEnteringBackground)
+        [self removeAllObjects:nil];
+    
+    __weak TMMemoryCache *weakSelf = self;
+    
+    dispatch_async(_queue, ^{
+        TMMemoryCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+        
+        if (strongSelf->_didEnterBackgroundBlock)
+            strongSelf->_didEnterBackgroundBlock(strongSelf);
+    });
+    
+#endif
+}
+
+- (void)removeObjectAndExecuteBlocksForKey:(NSString *)key
+{
+    id object = [_dictionary objectForKey:key];
+    NSNumber *cost = [_costs objectForKey:key];
+
+    if (_willRemoveObjectBlock)
+        _willRemoveObjectBlock(self, key, object);
+
+    if (cost)
+        _totalCost -= [cost unsignedIntegerValue];
+
+    [_dictionary removeObjectForKey:key];
+    [_dates removeObjectForKey:key];
+    [_costs removeObjectForKey:key];
+
+    if (_didRemoveObjectBlock)
+        _didRemoveObjectBlock(self, key, nil);
+}
+
+- (void)trimMemoryToDate:(NSDate *)trimDate
+{
+    NSArray *keysSortedByDate = [_dates keysSortedByValueUsingSelector:@selector(compare:)];
+    
+    for (NSString *key in keysSortedByDate) { // oldest objects first
+        NSDate *accessDate = [_dates objectForKey:key];
+        if (!accessDate)
+            continue;
+        
+        if ([accessDate compare:trimDate] == NSOrderedAscending) { // older than trim date
+            [self removeObjectAndExecuteBlocksForKey:key];
+        } else {
+            break;
+        }
+    }
+}
+
+- (void)trimToCostLimit:(NSUInteger)limit
+{
+    if (_totalCost <= limit)
+        return;
+
+    NSArray *keysSortedByCost = [_costs keysSortedByValueUsingSelector:@selector(compare:)];
+
+    for (NSString *key in [keysSortedByCost reverseObjectEnumerator]) { // costliest objects first
+        [self removeObjectAndExecuteBlocksForKey:key];
+
+        if (_totalCost <= limit)
+            break;
+    }
+}
+
+- (void)trimToCostLimitByDate:(NSUInteger)limit
+{
+    if (_totalCost <= limit)
+        return;
+
+    NSArray *keysSortedByDate = [_dates keysSortedByValueUsingSelector:@selector(compare:)];
+
+    for (NSString *key in keysSortedByDate) { // oldest objects first
+        [self removeObjectAndExecuteBlocksForKey:key];
+
+        if (_totalCost <= limit)
+            break;
+    }
+}
+
+- (void)trimToAgeLimitRecursively
+{
+    if (_ageLimit == 0.0)
+        return;
+
+    NSDate *date = [[NSDate alloc] initWithTimeIntervalSinceNow:-_ageLimit];
+    [self trimMemoryToDate:date];
+    
+    __weak TMMemoryCache *weakSelf = self;
+    
+    dispatch_time_t time = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(_ageLimit * NSEC_PER_SEC));
+    dispatch_after(time, _queue, ^(void){
+        TMMemoryCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+        
+        __weak TMMemoryCache *weakSelf = strongSelf;
+        
+        dispatch_barrier_async(strongSelf->_queue, ^{
+            TMMemoryCache *strongSelf = weakSelf;
+            [strongSelf trimToAgeLimitRecursively];
+        });
+    });
+}
+
+#pragma mark - Public Asynchronous Methods -
+
+- (void)objectForKey:(NSString *)key block:(TMMemoryCacheObjectBlock)block
+{
+    NSDate *now = [[NSDate alloc] init];
+    
+    if (!key || !block)
+        return;
+
+    __weak TMMemoryCache *weakSelf = self;
+
+    dispatch_async(_queue, ^{
+        TMMemoryCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        id object = [strongSelf->_dictionary objectForKey:key];
+
+        if (object) {
+            __weak TMMemoryCache *weakSelf = strongSelf;
+            dispatch_barrier_async(strongSelf->_queue, ^{
+                TMMemoryCache *strongSelf = weakSelf;
+                if (strongSelf)
+                    [strongSelf->_dates setObject:now forKey:key];
+            });
+        }
+
+        block(strongSelf, key, object);
+    });
+}
+
+- (void)setObject:(id)object forKey:(NSString *)key block:(TMMemoryCacheObjectBlock)block
+{
+    [self setObject:object forKey:key withCost:0 block:block];
+}
+
+- (void)setObject:(id)object forKey:(NSString *)key withCost:(NSUInteger)cost block:(TMMemoryCacheObjectBlock)block
+{
+    NSDate *now = [[NSDate alloc] init];
+
+    if (!key || !object)
+        return;
+
+    __weak TMMemoryCache *weakSelf = self;
+
+    dispatch_barrier_async(_queue, ^{
+        TMMemoryCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        if (strongSelf->_willAddObjectBlock)
+            strongSelf->_willAddObjectBlock(strongSelf, key, object);
+
+        [strongSelf->_dictionary setObject:object forKey:key];
+        [strongSelf->_dates setObject:now forKey:key];
+        [strongSelf->_costs setObject:@(cost) forKey:key];
+
+        _totalCost += cost;
+
+        if (strongSelf->_didAddObjectBlock)
+            strongSelf->_didAddObjectBlock(strongSelf, key, object);
+
+        if (strongSelf->_costLimit > 0)
+            [strongSelf trimToCostByDate:strongSelf->_costLimit block:nil];
+
+        if (block) {
+            __weak TMMemoryCache *weakSelf = strongSelf;
+            dispatch_async(strongSelf->_queue, ^{
+                TMMemoryCache *strongSelf = weakSelf;
+                if (strongSelf)
+                    block(strongSelf, key, object);
+            });
+        }
+    });
+}
+
+- (void)removeObjectForKey:(NSString *)key block:(TMMemoryCacheObjectBlock)block
+{
+    if (!key)
+        return;
+
+    __weak TMMemoryCache *weakSelf = self;
+
+    dispatch_barrier_async(_queue, ^{
+        TMMemoryCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        [strongSelf removeObjectAndExecuteBlocksForKey:key];
+
+        if (block) {
+            __weak TMMemoryCache *weakSelf = strongSelf;
+            dispatch_async(strongSelf->_queue, ^{
+                TMMemoryCache *strongSelf = weakSelf;
+                if (strongSelf)
+                    block(strongSelf, key, nil);
+            });
+        }
+    });
+}
+
+- (void)trimToDate:(NSDate *)trimDate block:(TMMemoryCacheBlock)block
+{
+    if (!trimDate)
+        return;
+
+    if ([trimDate isEqualToDate:[NSDate distantPast]]) {
+        [self removeAllObjects:block];
+        return;
+    }
+
+    __weak TMMemoryCache *weakSelf = self;
+
+    dispatch_barrier_async(_queue, ^{
+        TMMemoryCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        [strongSelf trimMemoryToDate:trimDate];
+
+        if (block) {
+            __weak TMMemoryCache *weakSelf = strongSelf;
+            dispatch_async(strongSelf->_queue, ^{
+                TMMemoryCache *strongSelf = weakSelf;
+                if (strongSelf)
+                    block(strongSelf);
+            });
+        }
+    });
+}
+
+- (void)trimToCost:(NSUInteger)cost block:(TMMemoryCacheBlock)block
+{
+    __weak TMMemoryCache *weakSelf = self;
+
+    dispatch_barrier_async(_queue, ^{
+        TMMemoryCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        [strongSelf trimToCostLimit:cost];
+
+        if (block) {
+            __weak TMMemoryCache *weakSelf = strongSelf;
+            dispatch_async(strongSelf->_queue, ^{
+                TMMemoryCache *strongSelf = weakSelf;
+                if (strongSelf)
+                    block(strongSelf);
+            });
+        }
+    });
+}
+
+- (void)trimToCostByDate:(NSUInteger)cost block:(TMMemoryCacheBlock)block
+{
+    __weak TMMemoryCache *weakSelf = self;
+
+    dispatch_barrier_async(_queue, ^{
+        TMMemoryCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        [strongSelf trimToCostLimitByDate:cost];
+
+        if (block) {
+            __weak TMMemoryCache *weakSelf = strongSelf;
+            dispatch_async(strongSelf->_queue, ^{
+                TMMemoryCache *strongSelf = weakSelf;
+                if (strongSelf)
+                    block(strongSelf);
+            });
+        }
+    });
+}
+
+- (void)removeAllObjects:(TMMemoryCacheBlock)block
+{
+    __weak TMMemoryCache *weakSelf = self;
+
+    dispatch_barrier_async(_queue, ^{
+        TMMemoryCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        if (strongSelf->_willRemoveAllObjectsBlock)
+            strongSelf->_willRemoveAllObjectsBlock(strongSelf);
+
+        [strongSelf->_dictionary removeAllObjects];
+        [strongSelf->_dates removeAllObjects];
+        [strongSelf->_costs removeAllObjects];
+        
+        strongSelf->_totalCost = 0;
+
+        if (strongSelf->_didRemoveAllObjectsBlock)
+            strongSelf->_didRemoveAllObjectsBlock(strongSelf);
+
+        if (block) {
+            __weak TMMemoryCache *weakSelf = strongSelf;
+            dispatch_async(strongSelf->_queue, ^{
+                TMMemoryCache *strongSelf = weakSelf;
+                if (strongSelf)
+                    block(strongSelf);
+            });
+        }
+    });
+}
+
+- (void)enumerateObjectsWithBlock:(TMMemoryCacheObjectBlock)block completionBlock:(TMMemoryCacheBlock)completionBlock
+{
+    if (!block)
+        return;
+
+    __weak TMMemoryCache *weakSelf = self;
+
+    dispatch_barrier_async(_queue, ^{
+        TMMemoryCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        NSArray *keysSortedByDate = [strongSelf->_dates keysSortedByValueUsingSelector:@selector(compare:)];
+        
+        for (NSString *key in keysSortedByDate) {
+            block(strongSelf, key, [strongSelf->_dictionary objectForKey:key]);
+        }
+
+        if (completionBlock) {
+            __weak TMMemoryCache *weakSelf = strongSelf;
+            dispatch_async(strongSelf->_queue, ^{
+                TMMemoryCache *strongSelf = weakSelf;
+                if (strongSelf)
+                    completionBlock(strongSelf);
+            });
+        }
+    });
+}
+
+#pragma mark - Public Synchronous Methods -
+
+- (id)objectForKey:(NSString *)key
+{
+    if (!key)
+        return nil;
+
+    __block id objectForKey = nil;
+
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+
+    [self objectForKey:key block:^(TMMemoryCache *cache, NSString *key, id object) {
+        objectForKey = object;
+        dispatch_semaphore_signal(semaphore);
+    }];
+
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+    #if !OS_OBJECT_USE_OBJC
+    dispatch_release(semaphore);
+    #endif
+
+    return objectForKey;
+}
+
+- (void)setObject:(id)object forKey:(NSString *)key
+{
+    [self setObject:object forKey:key withCost:0];
+}
+
+- (void)setObject:(id)object forKey:(NSString *)key withCost:(NSUInteger)cost
+{
+    if (!object || !key)
+        return;
+
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+
+    [self setObject:object forKey:key withCost:cost block:^(TMMemoryCache *cache, NSString *key, id object) {
+        dispatch_semaphore_signal(semaphore);
+    }];
+
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+    #if !OS_OBJECT_USE_OBJC
+    dispatch_release(semaphore);
+    #endif
+}
+
+- (void)removeObjectForKey:(NSString *)key
+{
+    if (!key)
+        return;
+    
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+
+    [self removeObjectForKey:key block:^(TMMemoryCache *cache, NSString *key, id object) {
+        dispatch_semaphore_signal(semaphore);
+    }];
+
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+    #if !OS_OBJECT_USE_OBJC
+    dispatch_release(semaphore);
+    #endif
+}
+
+- (void)trimToDate:(NSDate *)date
+{
+    if (!date)
+        return;
+
+    if ([date isEqualToDate:[NSDate distantPast]]) {
+        [self removeAllObjects];
+        return;
+    }
+    
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+
+    [self trimToDate:date block:^(TMMemoryCache *cache) {
+        dispatch_semaphore_signal(semaphore);
+    }];
+
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+    #if !OS_OBJECT_USE_OBJC
+    dispatch_release(semaphore);
+    #endif
+}
+
+- (void)trimToCost:(NSUInteger)cost
+{
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+
+    [self trimToCost:cost block:^(TMMemoryCache *cache) {
+        dispatch_semaphore_signal(semaphore);
+    }];
+
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+    #if !OS_OBJECT_USE_OBJC
+    dispatch_release(semaphore);
+    #endif
+}
+
+- (void)trimToCostByDate:(NSUInteger)cost
+{
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+
+    [self trimToCostByDate:cost block:^(TMMemoryCache *cache) {
+        dispatch_semaphore_signal(semaphore);
+    }];
+
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+    #if !OS_OBJECT_USE_OBJC
+    dispatch_release(semaphore);
+    #endif
+}
+
+- (void)removeAllObjects
+{
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+
+    [self removeAllObjects:^(TMMemoryCache *cache) {
+        dispatch_semaphore_signal(semaphore);
+    }];
+
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+    #if !OS_OBJECT_USE_OBJC
+    dispatch_release(semaphore);
+    #endif
+}
+
+- (void)enumerateObjectsWithBlock:(TMMemoryCacheObjectBlock)block
+{
+    if (!block)
+        return;
+
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+
+    [self enumerateObjectsWithBlock:block completionBlock:^(TMMemoryCache *cache) {
+        dispatch_semaphore_signal(semaphore);
+    }];
+
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+    #if !OS_OBJECT_USE_OBJC
+    dispatch_release(semaphore);
+    #endif
+}
+
+#pragma mark - Public Thread Safe Accessors -
+
+- (TMMemoryCacheObjectBlock)willAddObjectBlock
+{
+    __block TMMemoryCacheObjectBlock block = nil;
+
+    dispatch_sync(_queue, ^{
+        block = self->_willAddObjectBlock;
+    });
+
+    return block;
+}
+
+- (void)setWillAddObjectBlock:(TMMemoryCacheObjectBlock)block
+{
+    __weak TMMemoryCache *weakSelf = self;
+    
+    dispatch_barrier_async(_queue, ^{
+        TMMemoryCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        strongSelf->_willAddObjectBlock = [block copy];
+    });
+}
+
+- (TMMemoryCacheObjectBlock)willRemoveObjectBlock
+{
+    __block TMMemoryCacheObjectBlock block = nil;
+
+    dispatch_sync(_queue, ^{
+        block = _willRemoveObjectBlock;
+    });
+
+    return block;
+}
+
+- (void)setWillRemoveObjectBlock:(TMMemoryCacheObjectBlock)block
+{
+    __weak TMMemoryCache *weakSelf = self;
+
+    dispatch_barrier_async(_queue, ^{
+        TMMemoryCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        strongSelf->_willRemoveObjectBlock = [block copy];
+    });
+}
+
+- (TMMemoryCacheBlock)willRemoveAllObjectsBlock
+{
+    __block TMMemoryCacheBlock block = nil;
+
+    dispatch_sync(_queue, ^{
+        block = _willRemoveAllObjectsBlock;
+    });
+
+    return block;
+}
+
+- (void)setWillRemoveAllObjectsBlock:(TMMemoryCacheBlock)block
+{
+    __weak TMMemoryCache *weakSelf = self;
+
+    dispatch_barrier_async(_queue, ^{
+        TMMemoryCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        strongSelf->_willRemoveAllObjectsBlock = [block copy];
+    });
+}
+
+- (TMMemoryCacheObjectBlock)didAddObjectBlock
+{
+    __block TMMemoryCacheObjectBlock block = nil;
+
+    dispatch_sync(_queue, ^{
+        block = _didAddObjectBlock;
+    });
+
+    return block;
+}
+
+- (void)setDidAddObjectBlock:(TMMemoryCacheObjectBlock)block
+{
+    __weak TMMemoryCache *weakSelf = self;
+
+    dispatch_barrier_async(_queue, ^{
+        TMMemoryCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        strongSelf->_didAddObjectBlock = [block copy];
+    });
+}
+
+- (TMMemoryCacheObjectBlock)didRemoveObjectBlock
+{
+    __block TMMemoryCacheObjectBlock block = nil;
+
+    dispatch_sync(_queue, ^{
+        block = _didRemoveObjectBlock;
+    });
+
+    return block;
+}
+
+- (void)setDidRemoveObjectBlock:(TMMemoryCacheObjectBlock)block
+{
+    __weak TMMemoryCache *weakSelf = self;
+
+    dispatch_barrier_async(_queue, ^{
+        TMMemoryCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        strongSelf->_didRemoveObjectBlock = [block copy];
+    });
+}
+
+- (TMMemoryCacheBlock)didRemoveAllObjectsBlock
+{
+    __block TMMemoryCacheBlock block = nil;
+
+    dispatch_sync(_queue, ^{
+        block = _didRemoveAllObjectsBlock;
+    });
+
+    return block;
+}
+
+- (void)setDidRemoveAllObjectsBlock:(TMMemoryCacheBlock)block
+{
+    __weak TMMemoryCache *weakSelf = self;
+
+    dispatch_barrier_async(_queue, ^{
+        TMMemoryCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        strongSelf->_didRemoveAllObjectsBlock = [block copy];
+    });
+}
+
+- (TMMemoryCacheBlock)didReceiveMemoryWarningBlock
+{
+    __block TMMemoryCacheBlock block = nil;
+
+    dispatch_sync(_queue, ^{
+        block = _didReceiveMemoryWarningBlock;
+    });
+
+    return block;
+}
+
+- (void)setDidReceiveMemoryWarningBlock:(TMMemoryCacheBlock)block
+{
+    __weak TMMemoryCache *weakSelf = self;
+
+    dispatch_barrier_async(_queue, ^{
+        TMMemoryCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        strongSelf->_didReceiveMemoryWarningBlock = [block copy];
+    });
+}
+
+- (TMMemoryCacheBlock)didEnterBackgroundBlock
+{
+    __block TMMemoryCacheBlock block = nil;
+
+    dispatch_sync(_queue, ^{
+        block = _didEnterBackgroundBlock;
+    });
+
+    return block;
+}
+
+- (void)setDidEnterBackgroundBlock:(TMMemoryCacheBlock)block
+{
+    __weak TMMemoryCache *weakSelf = self;
+
+    dispatch_barrier_async(_queue, ^{
+        TMMemoryCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        strongSelf->_didEnterBackgroundBlock = [block copy];
+    });
+}
+
+- (NSTimeInterval)ageLimit
+{
+    __block NSTimeInterval ageLimit = 0.0;
+    
+    dispatch_sync(_queue, ^{
+        ageLimit = _ageLimit;
+    });
+    
+    return ageLimit;
+}
+
+- (void)setAgeLimit:(NSTimeInterval)ageLimit
+{
+    __weak TMMemoryCache *weakSelf = self;
+
+    dispatch_barrier_async(_queue, ^{
+        TMMemoryCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+        
+        strongSelf->_ageLimit = ageLimit;
+        
+        [strongSelf trimToAgeLimitRecursively];
+    });
+}
+
+- (NSUInteger)costLimit
+{
+    __block NSUInteger costLimit = 0;
+
+    dispatch_sync(_queue, ^{
+        costLimit = _costLimit;
+    });
+
+    return costLimit;
+}
+
+- (void)setCostLimit:(NSUInteger)costLimit
+{
+    __weak TMMemoryCache *weakSelf = self;
+
+    dispatch_barrier_async(_queue, ^{
+        TMMemoryCache *strongSelf = weakSelf;
+        if (!strongSelf)
+            return;
+
+        strongSelf->_costLimit = costLimit;
+
+        if (costLimit > 0)
+            [strongSelf trimToCostLimitByDate:costLimit];
+    });
+}
+
+- (NSUInteger)totalCost
+{
+    __block NSUInteger cost = 0;
+    
+    dispatch_sync(_queue, ^{
+        cost = _totalCost;
+    });
+    
+    return cost;
+}
+
+@end

Example/Pods/Target Support Files/AFNetworking/AFNetworking-dummy.m

+#import <Foundation/Foundation.h>
+@interface PodsDummy_AFNetworking : NSObject
+@end
+@implementation PodsDummy_AFNetworking
+@end

Example/Pods/Target Support Files/AFNetworking/AFNetworking-prefix.pch

+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#endif
+
+#ifndef TARGET_OS_IOS
+  #define TARGET_OS_IOS TARGET_OS_IPHONE
+#endif
+
+#ifndef TARGET_OS_WATCH
+  #define TARGET_OS_WATCH 0
+#endif

Example/Pods/Target Support Files/AFNetworking/AFNetworking-umbrella.h

+#import <UIKit/UIKit.h>
+
+#import "AFNetworking.h"
+#import "AFURLConnectionOperation.h"
+#import "AFHTTPRequestOperation.h"
+#import "AFHTTPRequestOperationManager.h"
+#import "AFHTTPSessionManager.h"
+#import "AFURLSessionManager.h"
+#import "AFNetworkReachabilityManager.h"
+#import "AFSecurityPolicy.h"
+#import "AFURLRequestSerialization.h"
+#import "AFURLResponseSerialization.h"
+#import "AFNetworkActivityIndicatorManager.h"
+#import "UIActivityIndicatorView+AFNetworking.h"
+#import "UIAlertView+AFNetworking.h"
+#import "UIButton+AFNetworking.h"
+#import "UIImage+AFNetworking.h"
+#import "UIImageView+AFNetworking.h"
+#import "UIKit+AFNetworking.h"
+#import "UIProgressView+AFNetworking.h"
+#import "UIRefreshControl+AFNetworking.h"
+#import "UIWebView+AFNetworking.h"
+
+FOUNDATION_EXPORT double AFNetworkingVersionNumber;
+FOUNDATION_EXPORT const unsigned char AFNetworkingVersionString[];
+

Example/Pods/Target Support Files/AFNetworking/AFNetworking.modulemap

+framework module AFNetworking {
+  umbrella header "AFNetworking-umbrella.h"
+
+  export *
+  module * { export * }
+}

Example/Pods/Target Support Files/AFNetworking/AFNetworking.xcconfig

+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+HEADER_SEARCH_PATHS = "${PODS_ROOT}/Headers/Private" "${PODS_ROOT}/Headers/Private/AFNetworking" "${PODS_ROOT}/Headers/Public"
+OTHER_LDFLAGS = -framework "CoreGraphics" -framework "MobileCoreServices" -framework "Security" -framework "SystemConfiguration"
+PODS_ROOT = ${SRCROOT}
+SKIP_INSTALL = YES
\ No newline at end of file

Example/Pods/Target Support Files/AFNetworking/Info.plist

+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>org.cocoapods.${PRODUCT_NAME:rfc1034identifier}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>2.6.3</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>${CURRENT_PROJECT_VERSION}</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>

Example/Pods/Target Support Files/GMLibrary/GMLibrary-dummy.m

+#import <Foundation/Foundation.h>
+@interface PodsDummy_GMLibrary : NSObject
+@end
+@implementation PodsDummy_GMLibrary
+@end

Example/Pods/Target Support Files/GMLibrary/GMLibrary-prefix.pch

+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#endif
+

Example/Pods/Target Support Files/GMLibrary/GMLibrary-umbrella.h

+#import <UIKit/UIKit.h>
+
+#import "WMCacheService.h"
+#import "WMDocumentCache.h"
+#import "WMImageUploadOperation.h"
+#import "WMNetSecurityWorking.h"
+#import "WMNetService.h"
+#import "WMNetworking.h"
+
+FOUNDATION_EXPORT double GMLibraryVersionNumber;
+FOUNDATION_EXPORT const unsigned char GMLibraryVersionString[];
+

Example/Pods/Target Support Files/GMLibrary/GMLibrary.modulemap

+framework module GMLibrary {
+  umbrella header "GMLibrary-umbrella.h"
+
+  export *
+  module * { export * }
+}

Example/Pods/Target Support Files/GMLibrary/GMLibrary.xcconfig

+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+HEADER_SEARCH_PATHS = "${PODS_ROOT}/Headers/Private" "${PODS_ROOT}/Headers/Private/GMLibrary" "${PODS_ROOT}/Headers/Public"
+PODS_ROOT = ${SRCROOT}
+SKIP_INSTALL = YES
\ No newline at end of file

Example/Pods/Target Support Files/GMLibrary/Info.plist

+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>org.cocoapods.${PRODUCT_NAME:rfc1034identifier}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>0.0.1</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>${CURRENT_PROJECT_VERSION}</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>

Example/Pods/Target Support Files/GMPhobos/Info.plist

@@ -15,7 +15,7 @@
   <key>CFBundlePackageType</key>
   <string>FMWK</string>
   <key>CFBundleShortVersionString</key>
-  <string>0.0.1</string>
+  <string>0.0.2</string>
   <key>CFBundleSignature</key>
   <string>????</string>
   <key>CFBundleVersion</key>

Example/Pods/Target Support Files/Pods-GMPhobos_Example/Pods-GMPhobos_Example-acknowledgements.markdown

 # Acknowledgements
 This application makes use of the following third party libraries:
 
+## AFNetworking
+
+Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+
+## GMLibrary
+
+Copyright (c) 2015 Sean Lee <1240690490@qq.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+
 ## GMPhobos
 
 Copyright (c) 2016 licong <1240690490@qq.com>
@@ -23,4 +69,209 @@ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 
+
+## TMCache
+
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+   "License" shall mean the terms and conditions for use, reproduction,
+   and distribution as defined by Sections 1 through 9 of this document.
+
+   "Licensor" shall mean the copyright owner or entity authorized by
+   the copyright owner that is granting the License.
+
+   "Legal Entity" shall mean the union of the acting entity and all
+   other entities that control, are controlled by, or are under common
+   control with that entity. For the purposes of this definition,
+   "control" means (i) the power, direct or indirect, to cause the
+   direction or management of such entity, whether by contract or
+   otherwise, or (ii) ownership of fifty percent (50%) or more of the
+   outstanding shares, or (iii) beneficial ownership of such entity.
+
+   "You" (or "Your") shall mean an individual or Legal Entity
+   exercising permissions granted by this License.
+
+   "Source" form shall mean the preferred form for making modifications,
+   including but not limited to software source code, documentation
+   source, and configuration files.
+
+   "Object" form shall mean any form resulting from mechanical
+   transformation or translation of a Source form, including but
+   not limited to compiled object code, generated documentation,
+   and conversions to other media types.
+
+   "Work" shall mean the work of authorship, whether in Source or
+   Object form, made available under the License, as indicated by a
+   copyright notice that is included in or attached to the work
+   (an example is provided in the Appendix below).
+
+   "Derivative Works" shall mean any work, whether in Source or Object
+   form, that is based on (or derived from) the Work and for which the
+   editorial revisions, annotations, elaborations, or other modifications
+   represent, as a whole, an original work of authorship. For the purposes
+   of this License, Derivative Works shall not include works that remain
+   separable from, or merely link (or bind by name) to the interfaces of,
+   the Work and Derivative Works thereof.
+
+   "Contribution" shall mean any work of authorship, including
+   the original version of the Work and any modifications or additions
+   to that Work or Derivative Works thereof, that is intentionally
+   submitted to Licensor for inclusion in the Work by the copyright owner
+   or by an individual or Legal Entity authorized to submit on behalf of
+   the copyright owner. For the purposes of this definition, "submitted"
+   means any form of electronic, verbal, or written communication sent
+   to the Licensor or its representatives, including but not limited to
+   communication on electronic mailing lists, source code control systems,
+   and issue tracking systems that are managed by, or on behalf of, the
+   Licensor for the purpose of discussing and improving the Work, but
+   excluding communication that is conspicuously marked or otherwise
+   designated in writing by the copyright owner as "Not a Contribution."
+
+   "Contributor" shall mean Licensor and any individual or Legal Entity
+   on behalf of whom a Contribution has been received by Licensor and
+   subsequently incorporated within the Work.
+
+2. Grant of Copyright License. Subject to the terms and conditions of
+   this License, each Contributor hereby grants to You a perpetual,
+   worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+   copyright license to reproduce, prepare Derivative Works of,
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+   Work and such Derivative Works in Source or Object form.
+
+3. Grant of Patent License. Subject to the terms and conditions of
+   this License, each Contributor hereby grants to You a perpetual,
+   worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+   (except as stated in this section) patent license to make, have made,
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+   where such license applies only to those patent claims licensable
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+   Contribution(s) alone or by combination of their Contribution(s)
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+   institute patent litigation against any entity (including a
+   cross-claim or counterclaim in a lawsuit) alleging that the Work
+   or a Contribution incorporated within the Work constitutes direct
+   or contributory patent infringement, then any patent licenses
+   granted to You under this License for that Work shall terminate
+   as of the date such litigation is filed.
+
+4. Redistribution. You may reproduce and distribute copies of the
+   Work or Derivative Works thereof in any medium, with or without
+   modifications, and in Source or Object form, provided that You
+   meet the following conditions:
+
+   (a) You must give any other recipients of the Work or
+       Derivative Works a copy of this License; and
+
+   (b) You must cause any modified files to carry prominent notices
+       stating that You changed the files; and
+
+   (c) You must retain, in the Source form of any Derivative Works
+       that You distribute, all copyright, patent, trademark, and
+       attribution notices from the Source form of the Work,
+       excluding those notices that do not pertain to any part of
+       the Derivative Works; and
+
+   (d) If the Work includes a "NOTICE" text file as part of its
+       distribution, then any Derivative Works that You distribute must
+       include a readable copy of the attribution notices contained
+       within such NOTICE file, excluding those notices that do not
+       pertain to any part of the Derivative Works, in at least one
+       of the following places: within a NOTICE text file distributed
+       as part of the Derivative Works; within the Source form or
+       documentation, if provided along with the Derivative Works; or,
+       within a display generated by the Derivative Works, if and
+       wherever such third-party notices normally appear. The contents
+       of the NOTICE file are for informational purposes only and
+       do not modify the License. You may add Your own attribution
+       notices within Derivative Works that You distribute, alongside
+       or as an addendum to the NOTICE text from the Work, provided
+       that such additional attribution notices cannot be construed
+       as modifying the License.
+
+   You may add Your own copyright statement to Your modifications and
+   may provide additional or different license terms and conditions
+   for use, reproduction, or distribution of Your modifications, or
+   for any such Derivative Works as a whole, provided Your use,
+   reproduction, and distribution of the Work otherwise complies with
+   the conditions stated in this License.
+
+5. Submission of Contributions. Unless You explicitly state otherwise,
+   any Contribution intentionally submitted for inclusion in the Work
+   by You to the Licensor shall be under the terms and conditions of
+   this License, without any additional terms or conditions.
+   Notwithstanding the above, nothing herein shall supersede or modify
+   the terms of any separate license agreement you may have executed
+   with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade
+   names, trademarks, service marks, or product names of the Licensor,
+   except as required for reasonable and customary use in describing the
+   origin of the Work and reproducing the content of the NOTICE file.
+
+7. Disclaimer of Warranty. Unless required by applicable law or
+   agreed to in writing, Licensor provides the Work (and each
+   Contributor provides its Contributions) on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+   implied, including, without limitation, any warranties or conditions
+   of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+   PARTICULAR PURPOSE. You are solely responsible for determining the
+   appropriateness of using or redistributing the Work and assume any
+   risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory,
+   whether in tort (including negligence), contract, or otherwise,
+   unless required by applicable law (such as deliberate and grossly
+   negligent acts) or agreed to in writing, shall any Contributor be
+   liable to You for damages, including any direct, indirect, special,
+   incidental, or consequential damages of any character arising as a
+   result of this License or out of the use or inability to use the
+   Work (including but not limited to damages for loss of goodwill,
+   work stoppage, computer failure or malfunction, or any and all
+   other commercial damages or losses), even if such Contributor
+   has been advised of the possibility of such damages.
+
+9. Accepting Warranty or Additional Liability. While redistributing
+   the Work or Derivative Works thereof, You may choose to offer,
+   and charge a fee for, acceptance of support, warranty, indemnity,
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+   License. However, in accepting such obligations, You may act only
+   on Your own behalf and on Your sole responsibility, not on behalf
+   of any other Contributor, and only if You agree to indemnify,
+   defend, and hold each Contributor harmless for any liability
+   incurred by, or claims asserted against, such Contributor by reason
+   of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
+
+APPENDIX: How to apply the Apache License to your work.
+
+   To apply the Apache License to your work, attach the following
+   boilerplate notice, with the fields enclosed by brackets "[]"
+   replaced with your own identifying information. (Don't include
+   the brackets!)  The text should be enclosed in the appropriate
+   comment syntax for the file format. We also recommend that a
+   file or class name and description of purpose be included on the
+   same "printed page" as the copyright notice for easier
+   identification within third-party archives.
+
+Copyright [2013] [Tumblr, Inc.]
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
 Generated by CocoaPods - http://cocoapods.org

Example/Pods/Target Support Files/Pods-GMPhobos_Example/Pods-GMPhobos_Example-acknowledgements.plist

@@ -12,6 +12,60 @@
 			<key>Type</key>
 			<string>PSGroupSpecifier</string>
 		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>Copyright (c) 2011&#8211;2015 Alamofire Software Foundation (http://alamofire.org/)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+</string>
+			<key>Title</key>
+			<string>AFNetworking</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>Copyright (c) 2015 Sean Lee &lt;1240690490@qq.com&gt;
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+</string>
+			<key>Title</key>
+			<string>GMLibrary</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
 		<dict>
 			<key>FooterText</key>
 			<string>Copyright (c) 2016 licong &lt;1240690490@qq.com&gt;
@@ -39,6 +93,215 @@ THE SOFTWARE.
 			<key>Type</key>
 			<string>PSGroupSpecifier</string>
 		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+   "License" shall mean the terms and conditions for use, reproduction,
+   and distribution as defined by Sections 1 through 9 of this document.
+
+   "Licensor" shall mean the copyright owner or entity authorized by
+   the copyright owner that is granting the License.
+
+   "Legal Entity" shall mean the union of the acting entity and all
+   other entities that control, are controlled by, or are under common
+   control with that entity. For the purposes of this definition,
+   "control" means (i) the power, direct or indirect, to cause the
+   direction or management of such entity, whether by contract or
+   otherwise, or (ii) ownership of fifty percent (50%) or more of the
+   outstanding shares, or (iii) beneficial ownership of such entity.
+
+   "You" (or "Your") shall mean an individual or Legal Entity
+   exercising permissions granted by this License.
+
+   "Source" form shall mean the preferred form for making modifications,
+   including but not limited to software source code, documentation
+   source, and configuration files.
+
+   "Object" form shall mean any form resulting from mechanical
+   transformation or translation of a Source form, including but
+   not limited to compiled object code, generated documentation,
+   and conversions to other media types.
+
+   "Work" shall mean the work of authorship, whether in Source or
+   Object form, made available under the License, as indicated by a
+   copyright notice that is included in or attached to the work
+   (an example is provided in the Appendix below).
+
+   "Derivative Works" shall mean any work, whether in Source or Object
+   form, that is based on (or derived from) the Work and for which the
+   editorial revisions, annotations, elaborations, or other modifications
+   represent, as a whole, an original work of authorship. For the purposes
+   of this License, Derivative Works shall not include works that remain
+   separable from, or merely link (or bind by name) to the interfaces of,
+   the Work and Derivative Works thereof.
+
+   "Contribution" shall mean any work of authorship, including
+   the original version of the Work and any modifications or additions
+   to that Work or Derivative Works thereof, that is intentionally
+   submitted to Licensor for inclusion in the Work by the copyright owner
+   or by an individual or Legal Entity authorized to submit on behalf of
+   the copyright owner. For the purposes of this definition, "submitted"
+   means any form of electronic, verbal, or written communication sent
+   to the Licensor or its representatives, including but not limited to
+   communication on electronic mailing lists, source code control systems,
+   and issue tracking systems that are managed by, or on behalf of, the
+   Licensor for the purpose of discussing and improving the Work, but
+   excluding communication that is conspicuously marked or otherwise
+   designated in writing by the copyright owner as "Not a Contribution."
+
+   "Contributor" shall mean Licensor and any individual or Legal Entity
+   on behalf of whom a Contribution has been received by Licensor and
+   subsequently incorporated within the Work.
+
+2. Grant of Copyright License. Subject to the terms and conditions of
+   this License, each Contributor hereby grants to You a perpetual,
+   worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+   copyright license to reproduce, prepare Derivative Works of,
+   publicly display, publicly perform, sublicense, and distribute the
+   Work and such Derivative Works in Source or Object form.
+
+3. Grant of Patent License. Subject to the terms and conditions of
+   this License, each Contributor hereby grants to You a perpetual,
+   worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+   (except as stated in this section) patent license to make, have made,
+   use, offer to sell, sell, import, and otherwise transfer the Work,
+   where such license applies only to those patent claims licensable
+   by such Contributor that are necessarily infringed by their
+   Contribution(s) alone or by combination of their Contribution(s)
+   with the Work to which such Contribution(s) was submitted. If You
+   institute patent litigation against any entity (including a
+   cross-claim or counterclaim in a lawsuit) alleging that the Work
+   or a Contribution incorporated within the Work constitutes direct
+   or contributory patent infringement, then any patent licenses
+   granted to You under this License for that Work shall terminate
+   as of the date such litigation is filed.
+
+4. Redistribution. You may reproduce and distribute copies of the
+   Work or Derivative Works thereof in any medium, with or without
+   modifications, and in Source or Object form, provided that You
+   meet the following conditions:
+
+   (a) You must give any other recipients of the Work or
+       Derivative Works a copy of this License; and
+
+   (b) You must cause any modified files to carry prominent notices
+       stating that You changed the files; and
+
+   (c) You must retain, in the Source form of any Derivative Works
+       that You distribute, all copyright, patent, trademark, and
+       attribution notices from the Source form of the Work,
+       excluding those notices that do not pertain to any part of
+       the Derivative Works; and
+
+   (d) If the Work includes a "NOTICE" text file as part of its
+       distribution, then any Derivative Works that You distribute must
+       include a readable copy of the attribution notices contained
+       within such NOTICE file, excluding those notices that do not
+       pertain to any part of the Derivative Works, in at least one
+       of the following places: within a NOTICE text file distributed
+       as part of the Derivative Works; within the Source form or
+       documentation, if provided along with the Derivative Works; or,
+       within a display generated by the Derivative Works, if and
+       wherever such third-party notices normally appear. The contents
+       of the NOTICE file are for informational purposes only and
+       do not modify the License. You may add Your own attribution
+       notices within Derivative Works that You distribute, alongside
+       or as an addendum to the NOTICE text from the Work, provided
+       that such additional attribution notices cannot be construed
+       as modifying the License.
+
+   You may add Your own copyright statement to Your modifications and
+   may provide additional or different license terms and conditions
+   for use, reproduction, or distribution of Your modifications, or
+   for any such Derivative Works as a whole, provided Your use,
+   reproduction, and distribution of the Work otherwise complies with
+   the conditions stated in this License.
+
+5. Submission of Contributions. Unless You explicitly state otherwise,
+   any Contribution intentionally submitted for inclusion in the Work
+   by You to the Licensor shall be under the terms and conditions of
+   this License, without any additional terms or conditions.
+   Notwithstanding the above, nothing herein shall supersede or modify
+   the terms of any separate license agreement you may have executed
+   with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade
+   names, trademarks, service marks, or product names of the Licensor,
+   except as required for reasonable and customary use in describing the
+   origin of the Work and reproducing the content of the NOTICE file.
+
+7. Disclaimer of Warranty. Unless required by applicable law or
+   agreed to in writing, Licensor provides the Work (and each
+   Contributor provides its Contributions) on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+   implied, including, without limitation, any warranties or conditions
+   of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+   PARTICULAR PURPOSE. You are solely responsible for determining the
+   appropriateness of using or redistributing the Work and assume any
+   risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory,
+   whether in tort (including negligence), contract, or otherwise,
+   unless required by applicable law (such as deliberate and grossly
+   negligent acts) or agreed to in writing, shall any Contributor be
+   liable to You for damages, including any direct, indirect, special,
+   incidental, or consequential damages of any character arising as a
+   result of this License or out of the use or inability to use the
+   Work (including but not limited to damages for loss of goodwill,
+   work stoppage, computer failure or malfunction, or any and all
+   other commercial damages or losses), even if such Contributor
+   has been advised of the possibility of such damages.
+
+9. Accepting Warranty or Additional Liability. While redistributing
+   the Work or Derivative Works thereof, You may choose to offer,
+   and charge a fee for, acceptance of support, warranty, indemnity,
+   or other liability obligations and/or rights consistent with this
+   License. However, in accepting such obligations, You may act only
+   on Your own behalf and on Your sole responsibility, not on behalf
+   of any other Contributor, and only if You agree to indemnify,
+   defend, and hold each Contributor harmless for any liability
+   incurred by, or claims asserted against, such Contributor by reason
+   of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
+
+APPENDIX: How to apply the Apache License to your work.
+
+   To apply the Apache License to your work, attach the following
+   boilerplate notice, with the fields enclosed by brackets "[]"
+   replaced with your own identifying information. (Don't include
+   the brackets!)  The text should be enclosed in the appropriate
+   comment syntax for the file format. We also recommend that a
+   file or class name and description of purpose be included on the
+   same "printed page" as the copyright notice for easier
+   identification within third-party archives.
+
+Copyright [2013] [Tumblr, Inc.]
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+</string>
+			<key>Title</key>
+			<string>TMCache</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
 		<dict>
 			<key>FooterText</key>
 			<string>Generated by CocoaPods - http://cocoapods.org</string>

Example/Pods/Target Support Files/Pods-GMPhobos_Example/Pods-GMPhobos_Example-frameworks.sh

@@ -84,8 +84,14 @@ strip_invalid_archs() {
 
 
 if [[ "$CONFIGURATION" == "Debug" ]]; then
+  install_framework "Pods-GMPhobos_Example/AFNetworking.framework"
+  install_framework "Pods-GMPhobos_Example/GMLibrary.framework"
   install_framework "Pods-GMPhobos_Example/GMPhobos.framework"
+  install_framework "Pods-GMPhobos_Example/TMCache.framework"
 fi
 if [[ "$CONFIGURATION" == "Release" ]]; then
+  install_framework "Pods-GMPhobos_Example/AFNetworking.framework"
+  install_framework "Pods-GMPhobos_Example/GMLibrary.framework"
   install_framework "Pods-GMPhobos_Example/GMPhobos.framework"
+  install_framework "Pods-GMPhobos_Example/TMCache.framework"
 fi

Example/Pods/Target Support Files/Pods-GMPhobos_Example/Pods-GMPhobos_Example.debug.xcconfig

 GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
 LD_RUNPATH_SEARCH_PATHS = $(inherited) '@executable_path/Frameworks' '@loader_path/Frameworks'
-OTHER_CFLAGS = $(inherited) -iquote "$CONFIGURATION_BUILD_DIR/GMPhobos.framework/Headers"
-OTHER_LDFLAGS = $(inherited) -framework "GMPhobos"
+OTHER_CFLAGS = $(inherited) -iquote "$CONFIGURATION_BUILD_DIR/AFNetworking.framework/Headers" -iquote "$CONFIGURATION_BUILD_DIR/GMLibrary.framework/Headers" -iquote "$CONFIGURATION_BUILD_DIR/GMPhobos.framework/Headers" -iquote "$CONFIGURATION_BUILD_DIR/TMCache.framework/Headers"
+OTHER_LDFLAGS = $(inherited) -framework "AFNetworking" -framework "GMLibrary" -framework "GMPhobos" -framework "TMCache"
 PODS_FRAMEWORK_BUILD_PATH = $(BUILD_DIR)/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)/Pods-GMPhobos_Example
 PODS_ROOT = ${SRCROOT}/Pods
\ No newline at end of file

Example/Pods/Target Support Files/Pods-GMPhobos_Example/Pods-GMPhobos_Example.release.xcconfig

 GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
 LD_RUNPATH_SEARCH_PATHS = $(inherited) '@executable_path/Frameworks' '@loader_path/Frameworks'
-OTHER_CFLAGS = $(inherited) -iquote "$CONFIGURATION_BUILD_DIR/GMPhobos.framework/Headers"
-OTHER_LDFLAGS = $(inherited) -framework "GMPhobos"
+OTHER_CFLAGS = $(inherited) -iquote "$CONFIGURATION_BUILD_DIR/AFNetworking.framework/Headers" -iquote "$CONFIGURATION_BUILD_DIR/GMLibrary.framework/Headers" -iquote "$CONFIGURATION_BUILD_DIR/GMPhobos.framework/Headers" -iquote "$CONFIGURATION_BUILD_DIR/TMCache.framework/Headers"
+OTHER_LDFLAGS = $(inherited) -framework "AFNetworking" -framework "GMLibrary" -framework "GMPhobos" -framework "TMCache"
 PODS_FRAMEWORK_BUILD_PATH = $(BUILD_DIR)/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)/Pods-GMPhobos_Example
 PODS_ROOT = ${SRCROOT}/Pods
\ No newline at end of file

Example/Pods/Target Support Files/Pods-GMPhobos_Tests/Pods-GMPhobos_Tests-acknowledgements.markdown

 # Acknowledgements
 This application makes use of the following third party libraries:
 
+## AFNetworking
+
+Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+
+## GMLibrary
+
+Copyright (c) 2015 Sean Lee <1240690490@qq.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+
 ## GMPhobos
 
 Copyright (c) 2016 licong <1240690490@qq.com>
@@ -23,4 +69,209 @@ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 
+
+## TMCache
+
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+   "License" shall mean the terms and conditions for use, reproduction,
+   and distribution as defined by Sections 1 through 9 of this document.
+
+   "Licensor" shall mean the copyright owner or entity authorized by
+   the copyright owner that is granting the License.
+
+   "Legal Entity" shall mean the union of the acting entity and all
+   other entities that control, are controlled by, or are under common
+   control with that entity. For the purposes of this definition,
+   "control" means (i) the power, direct or indirect, to cause the
+   direction or management of such entity, whether by contract or
+   otherwise, or (ii) ownership of fifty percent (50%) or more of the
+   outstanding shares, or (iii) beneficial ownership of such entity.
+
+   "You" (or "Your") shall mean an individual or Legal Entity
+   exercising permissions granted by this License.
+
+   "Source" form shall mean the preferred form for making modifications,
+   including but not limited to software source code, documentation
+   source, and configuration files.
+
+   "Object" form shall mean any form resulting from mechanical
+   transformation or translation of a Source form, including but
+   not limited to compiled object code, generated documentation,
+   and conversions to other media types.
+
+   "Work" shall mean the work of authorship, whether in Source or
+   Object form, made available under the License, as indicated by a
+   copyright notice that is included in or attached to the work
+   (an example is provided in the Appendix below).
+
+   "Derivative Works" shall mean any work, whether in Source or Object
+   form, that is based on (or derived from) the Work and for which the
+   editorial revisions, annotations, elaborations, or other modifications
+   represent, as a whole, an original work of authorship. For the purposes
+   of this License, Derivative Works shall not include works that remain
+   separable from, or merely link (or bind by name) to the interfaces of,
+   the Work and Derivative Works thereof.
+
+   "Contribution" shall mean any work of authorship, including
+   the original version of the Work and any modifications or additions
+   to that Work or Derivative Works thereof, that is intentionally
+   submitted to Licensor for inclusion in the Work by the copyright owner
+   or by an individual or Legal Entity authorized to submit on behalf of
+   the copyright owner. For the purposes of this definition, "submitted"
+   means any form of electronic, verbal, or written communication sent
+   to the Licensor or its representatives, including but not limited to
+   communication on electronic mailing lists, source code control systems,
+   and issue tracking systems that are managed by, or on behalf of, the
+   Licensor for the purpose of discussing and improving the Work, but
+   excluding communication that is conspicuously marked or otherwise
+   designated in writing by the copyright owner as "Not a Contribution."
+
+   "Contributor" shall mean Licensor and any individual or Legal Entity
+   on behalf of whom a Contribution has been received by Licensor and
+   subsequently incorporated within the Work.
+
+2. Grant of Copyright License. Subject to the terms and conditions of
+   this License, each Contributor hereby grants to You a perpetual,
+   worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+   copyright license to reproduce, prepare Derivative Works of,
+   publicly display, publicly perform, sublicense, and distribute the
+   Work and such Derivative Works in Source or Object form.
+
+3. Grant of Patent License. Subject to the terms and conditions of
+   this License, each Contributor hereby grants to You a perpetual,
+   worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+   (except as stated in this section) patent license to make, have made,
+   use, offer to sell, sell, import, and otherwise transfer the Work,
+   where such license applies only to those patent claims licensable
+   by such Contributor that are necessarily infringed by their
+   Contribution(s) alone or by combination of their Contribution(s)
+   with the Work to which such Contribution(s) was submitted. If You
+   institute patent litigation against any entity (including a
+   cross-claim or counterclaim in a lawsuit) alleging that the Work
+   or a Contribution incorporated within the Work constitutes direct
+   or contributory patent infringement, then any patent licenses
+   granted to You under this License for that Work shall terminate
+   as of the date such litigation is filed.
+
+4. Redistribution. You may reproduce and distribute copies of the
+   Work or Derivative Works thereof in any medium, with or without
+   modifications, and in Source or Object form, provided that You
+   meet the following conditions:
+
+   (a) You must give any other recipients of the Work or
+       Derivative Works a copy of this License; and
+
+   (b) You must cause any modified files to carry prominent notices
+       stating that You changed the files; and
+
+   (c) You must retain, in the Source form of any Derivative Works
+       that You distribute, all copyright, patent, trademark, and
+       attribution notices from the Source form of the Work,
+       excluding those notices that do not pertain to any part of
+       the Derivative Works; and
+
+   (d) If the Work includes a "NOTICE" text file as part of its
+       distribution, then any Derivative Works that You distribute must
+       include a readable copy of the attribution notices contained
+       within such NOTICE file, excluding those notices that do not
+       pertain to any part of the Derivative Works, in at least one
+       of the following places: within a NOTICE text file distributed
+       as part of the Derivative Works; within the Source form or
+       documentation, if provided along with the Derivative Works; or,
+       within a display generated by the Derivative Works, if and
+       wherever such third-party notices normally appear. The contents
+       of the NOTICE file are for informational purposes only and
+       do not modify the License. You may add Your own attribution
+       notices within Derivative Works that You distribute, alongside
+       or as an addendum to the NOTICE text from the Work, provided
+       that such additional attribution notices cannot be construed
+       as modifying the License.
+
+   You may add Your own copyright statement to Your modifications and
+   may provide additional or different license terms and conditions
+   for use, reproduction, or distribution of Your modifications, or
+   for any such Derivative Works as a whole, provided Your use,
+   reproduction, and distribution of the Work otherwise complies with
+   the conditions stated in this License.
+
+5. Submission of Contributions. Unless You explicitly state otherwise,
+   any Contribution intentionally submitted for inclusion in the Work
+   by You to the Licensor shall be under the terms and conditions of
+   this License, without any additional terms or conditions.
+   Notwithstanding the above, nothing herein shall supersede or modify
+   the terms of any separate license agreement you may have executed
+   with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade
+   names, trademarks, service marks, or product names of the Licensor,
+   except as required for reasonable and customary use in describing the
+   origin of the Work and reproducing the content of the NOTICE file.
+
+7. Disclaimer of Warranty. Unless required by applicable law or
+   agreed to in writing, Licensor provides the Work (and each
+   Contributor provides its Contributions) on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+   implied, including, without limitation, any warranties or conditions
+   of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+   PARTICULAR PURPOSE. You are solely responsible for determining the
+   appropriateness of using or redistributing the Work and assume any
+   risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory,
+   whether in tort (including negligence), contract, or otherwise,
+   unless required by applicable law (such as deliberate and grossly
+   negligent acts) or agreed to in writing, shall any Contributor be
+   liable to You for damages, including any direct, indirect, special,
+   incidental, or consequential damages of any character arising as a
+   result of this License or out of the use or inability to use the
+   Work (including but not limited to damages for loss of goodwill,
+   work stoppage, computer failure or malfunction, or any and all
+   other commercial damages or losses), even if such Contributor
+   has been advised of the possibility of such damages.
+
+9. Accepting Warranty or Additional Liability. While redistributing
+   the Work or Derivative Works thereof, You may choose to offer,
+   and charge a fee for, acceptance of support, warranty, indemnity,
+   or other liability obligations and/or rights consistent with this
+   License. However, in accepting such obligations, You may act only
+   on Your own behalf and on Your sole responsibility, not on behalf
+   of any other Contributor, and only if You agree to indemnify,
+   defend, and hold each Contributor harmless for any liability
+   incurred by, or claims asserted against, such Contributor by reason
+   of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
+
+APPENDIX: How to apply the Apache License to your work.
+
+   To apply the Apache License to your work, attach the following
+   boilerplate notice, with the fields enclosed by brackets "[]"
+   replaced with your own identifying information. (Don't include
+   the brackets!)  The text should be enclosed in the appropriate
+   comment syntax for the file format. We also recommend that a
+   file or class name and description of purpose be included on the
+   same "printed page" as the copyright notice for easier
+   identification within third-party archives.
+
+Copyright [2013] [Tumblr, Inc.]
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
 Generated by CocoaPods - http://cocoapods.org

Example/Pods/Target Support Files/Pods-GMPhobos_Tests/Pods-GMPhobos_Tests-acknowledgements.plist

@@ -12,6 +12,60 @@
 			<key>Type</key>
 			<string>PSGroupSpecifier</string>
 		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>Copyright (c) 2011&#8211;2015 Alamofire Software Foundation (http://alamofire.org/)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+</string>
+			<key>Title</key>
+			<string>AFNetworking</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>Copyright (c) 2015 Sean Lee &lt;1240690490@qq.com&gt;
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+</string>
+			<key>Title</key>
+			<string>GMLibrary</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
 		<dict>
 			<key>FooterText</key>
 			<string>Copyright (c) 2016 licong &lt;1240690490@qq.com&gt;
@@ -39,6 +93,215 @@ THE SOFTWARE.
 			<key>Type</key>
 			<string>PSGroupSpecifier</string>
 		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+   "License" shall mean the terms and conditions for use, reproduction,
+   and distribution as defined by Sections 1 through 9 of this document.
+
+   "Licensor" shall mean the copyright owner or entity authorized by
+   the copyright owner that is granting the License.
+
+   "Legal Entity" shall mean the union of the acting entity and all
+   other entities that control, are controlled by, or are under common
+   control with that entity. For the purposes of this definition,
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+6. Trademarks. This License does not grant permission to use the trade
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+8. Limitation of Liability. In no event and under no legal theory,
+   whether in tort (including negligence), contract, or otherwise,
+   unless required by applicable law (such as deliberate and grossly
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+
+APPENDIX: How to apply the Apache License to your work.
+
+   To apply the Apache License to your work, attach the following
+   boilerplate notice, with the fields enclosed by brackets "[]"
+   replaced with your own identifying information. (Don't include
+   the brackets!)  The text should be enclosed in the appropriate
+   comment syntax for the file format. We also recommend that a
+   file or class name and description of purpose be included on the
+   same "printed page" as the copyright notice for easier
+   identification within third-party archives.
+
+Copyright [2013] [Tumblr, Inc.]
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
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+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+</string>
+			<key>Title</key>
+			<string>TMCache</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
 		<dict>
 			<key>FooterText</key>
 			<string>Generated by CocoaPods - http://cocoapods.org</string>

Example/Pods/Target Support Files/Pods-GMPhobos_Tests/Pods-GMPhobos_Tests-frameworks.sh

@@ -84,8 +84,14 @@ strip_invalid_archs() {
 
 
 if [[ "$CONFIGURATION" == "Debug" ]]; then
+  install_framework "Pods-GMPhobos_Tests/AFNetworking.framework"
+  install_framework "Pods-GMPhobos_Tests/GMLibrary.framework"
   install_framework "Pods-GMPhobos_Tests/GMPhobos.framework"
+  install_framework "Pods-GMPhobos_Tests/TMCache.framework"
 fi
 if [[ "$CONFIGURATION" == "Release" ]]; then
+  install_framework "Pods-GMPhobos_Tests/AFNetworking.framework"
+  install_framework "Pods-GMPhobos_Tests/GMLibrary.framework"
   install_framework "Pods-GMPhobos_Tests/GMPhobos.framework"
+  install_framework "Pods-GMPhobos_Tests/TMCache.framework"
 fi

Example/Pods/Target Support Files/Pods-GMPhobos_Tests/Pods-GMPhobos_Tests.debug.xcconfig

 GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
 LD_RUNPATH_SEARCH_PATHS = $(inherited) '@executable_path/Frameworks' '@loader_path/Frameworks'
-OTHER_CFLAGS = $(inherited) -iquote "$CONFIGURATION_BUILD_DIR/GMPhobos.framework/Headers"
-OTHER_LDFLAGS = $(inherited) -framework "GMPhobos"
+OTHER_CFLAGS = $(inherited) -iquote "$CONFIGURATION_BUILD_DIR/AFNetworking.framework/Headers" -iquote "$CONFIGURATION_BUILD_DIR/GMLibrary.framework/Headers" -iquote "$CONFIGURATION_BUILD_DIR/GMPhobos.framework/Headers" -iquote "$CONFIGURATION_BUILD_DIR/TMCache.framework/Headers"
+OTHER_LDFLAGS = $(inherited) -framework "AFNetworking" -framework "GMLibrary" -framework "GMPhobos" -framework "TMCache"
 PODS_FRAMEWORK_BUILD_PATH = $(BUILD_DIR)/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)/Pods-GMPhobos_Tests
 PODS_ROOT = ${SRCROOT}/Pods
\ No newline at end of file

Example/Pods/Target Support Files/Pods-GMPhobos_Tests/Pods-GMPhobos_Tests.release.xcconfig

 GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
 LD_RUNPATH_SEARCH_PATHS = $(inherited) '@executable_path/Frameworks' '@loader_path/Frameworks'
-OTHER_CFLAGS = $(inherited) -iquote "$CONFIGURATION_BUILD_DIR/GMPhobos.framework/Headers"
-OTHER_LDFLAGS = $(inherited) -framework "GMPhobos"
+OTHER_CFLAGS = $(inherited) -iquote "$CONFIGURATION_BUILD_DIR/AFNetworking.framework/Headers" -iquote "$CONFIGURATION_BUILD_DIR/GMLibrary.framework/Headers" -iquote "$CONFIGURATION_BUILD_DIR/GMPhobos.framework/Headers" -iquote "$CONFIGURATION_BUILD_DIR/TMCache.framework/Headers"
+OTHER_LDFLAGS = $(inherited) -framework "AFNetworking" -framework "GMLibrary" -framework "GMPhobos" -framework "TMCache"
 PODS_FRAMEWORK_BUILD_PATH = $(BUILD_DIR)/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)/Pods-GMPhobos_Tests
 PODS_ROOT = ${SRCROOT}/Pods
\ No newline at end of file

Example/Pods/Target Support Files/TMCache/Info.plist

+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>org.cocoapods.${PRODUCT_NAME:rfc1034identifier}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>2.1.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>${CURRENT_PROJECT_VERSION}</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>

Example/Pods/Target Support Files/TMCache/TMCache-dummy.m

+#import <Foundation/Foundation.h>
+@interface PodsDummy_TMCache : NSObject
+@end
+@implementation PodsDummy_TMCache
+@end

Example/Pods/Target Support Files/TMCache/TMCache-prefix.pch

+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#endif
+

Example/Pods/Target Support Files/TMCache/TMCache-umbrella.h

+#import <UIKit/UIKit.h>
+
+#import "TMCache.h"
+#import "TMCacheBackgroundTaskManager.h"
+#import "TMDiskCache.h"
+#import "TMMemoryCache.h"
+
+FOUNDATION_EXPORT double TMCacheVersionNumber;
+FOUNDATION_EXPORT const unsigned char TMCacheVersionString[];
+

Example/Pods/Target Support Files/TMCache/TMCache.modulemap

+framework module TMCache {
+  umbrella header "TMCache-umbrella.h"
+
+  export *
+  module * { export * }
+}

Example/Pods/Target Support Files/TMCache/TMCache.xcconfig

+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+HEADER_SEARCH_PATHS = "${PODS_ROOT}/Headers/Private" "${PODS_ROOT}/Headers/Private/TMCache" "${PODS_ROOT}/Headers/Public"
+OTHER_LDFLAGS = -framework "Foundation" -weak_framework "UIKit"
+PODS_ROOT = ${SRCROOT}
+SKIP_INSTALL = YES
\ No newline at end of file

GMPhobos.podspec

@@ -8,7 +8,7 @@
 
 Pod::Spec.new do |s|
   s.name             = "GMPhobos"
-  s.version          = "0.0.1"
+  s.version          = "0.0.2"
   s.summary          = "A short description of GMPhobos."
 
 # This description is used to generate tags and improve search results.
@@ -24,14 +24,14 @@ Pod::Spec.new do |s|
   # s.screenshots     = "www.example.com/screenshots_1", "www.example.com/screenshots_2"
   s.license          = 'MIT'
   s.author           = { "licong" => "licong@gmei.com" }
-  s.source           = { :git => "http://git.gengmei.cc/gengmeiios/GMPhobos.git", :tag => "0.0.1" }
+  s.source           = { :git => "http://git.gengmei.cc/gengmeiios/GMPhobos.git", :tag => "0.0.2" }
   # s.social_media_url = 'https://twitter.com/<TWITTER_USERNAME>'
 
   s.platform     = :ios, '7.0'
   s.requires_arc = true
 
   s.source_files = 'Pod/Classes/**/*'
-  # s.dependency 'GMLibrary','~> 0.0.1' 
+  s.dependency 'GMLibrary','~> 0.0.1' 
   s.library   = 'z'
   # s.resource_bundles = {
   #   'GMPhobos' => ['Pod/Assets/*.png']