[Bugfix] 修复监控session和监控窗口变化引起的bug

coco/app.py

@@ -150,10 +150,10 @@ class Coco:
                 for s in self.sessions:
                     if not s.stop_evt.is_set():
                         continue
-                    if s.date_finished is None:
+                    if s.date_end is None:
                         self.remove_session(s)
                         continue
-                    delta = datetime.datetime.now() - s.date_finished
+                    delta = datetime.datetime.now() - s.date_end
                     if delta > datetime.timedelta(seconds=interval*5):
                         self.remove_session(s)
                 time.sleep(interval)

coco/proxy.py

@@ -7,8 +7,8 @@ import threading
 import logging
 import time
 import weakref
-
 import paramiko
+from paramiko.ssh_exception import SSHException
 
 from .session import Session
 from .models import Server
@@ -130,7 +130,10 @@ class ProxyServer:
             width = self.request.meta.get('width', 80)
             height = self.request.meta.get('height', 24)
             logger.debug("Change win size: %s - %s" % (width, height))
+            try:
                 self.server.chan.resize_pty(width=width, height=height)
+            except SSHException:
+                break
 
     def watch_win_size_change_async(self):
         thread = threading.Thread(target=self.watch_win_size_change)