- add subscription via MessageDispatcher

ws/server/ws_server.py

@@ -5,10 +5,13 @@ import abc
 
 class WsServer:
 	def __init__(self, loop=None):
-		if loop is None:
-			self.loop = asyncio.get_event_loop()
+		self.loop = loop
+
+	def run_forever(self):
+		if self.loop is None:
+			asyncio.get_event_loop().run_forever()
 		else:
-			self.loop = loop
+			self.loop.run_forever()
 
 	async def listen(self, host, port):
 		return await websockets.serve(self.handler, host, port, loop=self.loop)