其中一方断线后，通知另一方断开连接

target.py

@@ -14,12 +14,14 @@ import prot_codec as pc
 # device:
 # server
 # client
+# proxy
 # 定义操作类型
 # option:
 # connect
 # disconnect
 # data
 # login
+# close
 
 
 _tcp_server=None
@@ -53,5 +55,21 @@ class tcp_target(object):
       else:
         if(_tcp_client is not None):
           _tcp_client.send(recv_data)
+  # 只要有一个断了所有的都断开
+  def close(self):
+    cmd={'device':'proxy','option':'close'}
+    data=pc.encode(json.dumps(cmd).encode('utf-8'),b'default')
+    # 这里有可能连接已经断开，无法发送
+    if(_tcp_client is not None):
+      try:
+        _tcp_client.send(data)
+      except Exception as e:
+        print("target_close:",str(e))
+    if(_tcp_server is not None):
+      try:
+        _tcp_server.send(data)
+      except Exception as e:
+        print("target_close:",str(e))
+