from socketify import App, AppOptions, OpCode, CompressOptions def ws_open(ws): print("A WebSocket got connected!") # Let this client listen to topic "broadcast" ws.subscribe("broadcast") def ws_message(ws, message, opcode): # Broadcast this message ws.publish("broadcast", message, opcode) app = App() app.ws( "/*", { "compression": CompressOptions.SHARED_COMPRESSOR, "max_payload_length": 16 * 1024 * 1024, "idle_timeout": 60, "open": ws_open, "message": ws_message, # The library guarantees proper unsubscription at close "close": lambda ws, code, message: print("WebSocket closed"), "subscription": lambda ws, topic, subscriptions, subscriptions_before: print(f'subscription/unsubscription on topic {topic} {subscriptions} {subscriptions_before}'), }, ) app.any("/", lambda res, req: res.end("Nothing to see here!")) app.listen( 3000, lambda config: print("Listening on port http://localhost:%d now\n" % (config.port)), ) app.run()