Remove the custom on_close event to keep the session alive

tfw/components/terminal/terminado_mini_server.py

@@ -17,7 +17,7 @@ class TerminadoMiniServer:
             url,
             TerminadoMiniServer.ResetterTermSocket,
             {'term_manager': self._term_manager}
-        )])
+        )], websocket_ping_interval=30)
 
     @property
     def term_manager(self):
@@ -33,10 +33,6 @@ class TerminadoMiniServer:
         def check_origin(self, origin):
             return True
 
-        def on_close(self):
-            self.term_manager.terminal = None
-            self.term_manager.get_terminal()
-
     def listen(self):
         self.application.listen(self.port)
 

tfw/main/tfw_server.py

@@ -28,7 +28,7 @@ class TFWServer:
             r'/ws', ZMQWebSocketRouter, {
                 'listener': self._listener,
             }
-        )])
+        )], websocket_ping_interval=30)
 
     def listen(self):
         self.application.listen(TFWENV.WEB_PORT)