[Update] 修改config

coco/config.py

@@ -92,8 +92,9 @@ class Config(dict):
     """
 
     def __init__(self, root_path, defaults=None):
-        dict.__init__(self, defaults or {})
+        self.defaults = defaults or {}
         self.root_path = root_path
+        super().__init__({})
 
     def from_envvar(self, variable_name, silent=False):
         """Loads a configuration from an environment variable pointing to
@@ -269,6 +270,21 @@ class Config(dict):
             rv[key] = v
         return rv
 
+    def __getitem__(self, item):
+        try:
+            value = super().__getitem__(item)
+        except KeyError:
+            value = None
+        if value is not None:
+            return value
+        value = os.environ.get(item, None)
+        if value is not None:
+            return value
+        return self.defaults.get(item)
+
+    def __getattr__(self, item):
+        return self.__getitem__(item)
+
     def __repr__(self):
         return '<%s %s>' % (self.__class__.__name__, dict.__repr__(self))
 

coco/sshd.py

@@ -63,6 +63,7 @@ class SSHServer:
         return connection
 
     def handle_connection(self, sock, addr):
+        logger.debug("Handle new connection from: {}".format(addr))
         transport = paramiko.Transport(sock, gss_kex=False)
         try:
             transport.load_server_moduli()
@@ -77,7 +78,7 @@ class SSHServer:
         server = SSHInterface(connection)
         try:
             transport.start_server(server=server)
-        except paramiko.SSHException:
+        except (paramiko.SSHException, socket.timeout):
             logger.warning("SSH negotiation failed")
             return
         except EOFError as e: