mqttClient.connectionMessage = connMessage; mqttClient.setProtocolV311(); mqttClient.logging(on: false); if(isSsl){ mqttClient.secure = true; mqttClient.onBadCertificate = _onBadCertificate; } return mqttClient.connect(userName,password); } void disConnect(){ mqttClient?.disconnect(); } ///...
# 定义消息处理回调函数defon_message(client,userdata,msg):print(f"Received message '{msg.payload}' on topic '{msg.topic}'")client=mqtt.Client()client.on_message=on_message# 连接到Brokerclient.connect("localhost",1883,60)# 订阅主题client.subscribe("test/topic")# 阻塞循环,等待消息client.loop_...
# 初始化MQTT客户端mqtt_client = mqtt.Client()mqtt_client.on_connect = on_connectmqtt_client.on_message = on_message # 连接MQTT服务器mqtt_client.connect(MQTT_BROKER_ADDRESS, MQTT_BROKER_PORT,60) # 开始MQTT客户端循环mqtt_client.loop_start() try:#...
client.loop_start() while True: topic = "your_topic" message = "your_message" client.publish(topic, message, qos=0) # 指定主题和消息内容,qos参数为消息质量等级 time.sleep(1) # 每隔1秒发布一次主题 client.loop_stop() client.disconnect() 在上述示例代码中,我们首先创建了一个MQTT客户端对象,并...
HEARTBEAT = 60 client = mqtt.Client(CLIENTID) topic = '/ESP32@PAD' def on_connect(client,...
client.on_unsubscribe = on_unsubscribe 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. client.username_pw_set(user, password) client.connect(host=broker, port=port, keepalive=60) client.loop_forever() client.loop_start() # 订阅 client.subscribe() ...
mqttClient.loop_start() # publish 消息 defon_publish(topic, payload, qos): mqttClient.publish(topic, payload, qos) # 消息处理函数 defon_message_come(lient, userdata, msg): print(msg.topic+" "+":"+str(msg.payload)) # subscribe 消息 ...
rc = client.connect(settings.MQTT_HOST, port=1883, keepalive=60)if(rc==0andiotsubdev.status=="SUBSCRIBED"):print("初始化开始sub") client.subscribe(topic=str(devices_pk),qos=0) client.loop_start()print("初始化sub结束")else:# print("连接失败")passexcept:passinit_subscribe() ...
connect mqtt_client.on_message = on_message # 连接MQTT服务器 mqtt_client.connect(MQTT_BROKER_ADDRESS, MQTT_BROKER_PORT, 60) # 开始MQTT客户端循环 mqtt_client.loop_start() try: # ROS主循环 rospy.spin() except KeyboardInterrupt: print("Shutting down") # 停止MQTT客户端循环 mqtt_client.loop_...
The documentation says that loop_start() can be called either before or after connect(), however this appears not to be true. Calling loop_start() after connect() seems to work fine import paho.mqtt.client print(paho.mqtt.__version__) cl...