def serve_data_websocket(self, request): policy_map = { "version": SingleOptionPolicy("8"), "protocol": SingleOptionPolicy("telemetry.calsol.berkeley.edu") } try: WebSocket.validate(request, policy_map) except ValueError as e: print e return HTTPResponse(400, content_type="text/plain", body=str(e)) websocket = WebSocket(request, self) websocket.negotiate(policy_map) while True: message = websocket.read_message() print "Received:", message.payload_string s = "Hello, client!" import StringIO reply = Message.make_text(StringIO.StringIO(s), len(s)) websocket.send_message(reply)