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(); } ///...
问泛美卫生组织MQTT (Python) - loop_start()不起作用EN# -*- coding: utf-8 -*- import paho...
# 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:#...
21. 在上面的例子中,我们创建了一个mqtt.Client对象,并设置了on_connect回调函数,用于处理连接到MQTT代理的结果。然后,我们设置了MQTT代理的主机名、端口号和连接凭据,并调用connect方法连接到MQTT代理。最后,我们调用loop_start方法启动一个线程,用于处理MQTT消息的接收和处理。 订阅MQTT消息 一旦我们连接到了MQTT代理,...
mqtt_client.on_connect = on_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()
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 ...
client.connect("mqtt_server_address", mqtt_port, 60) client.username_pw_set("username", "password") # 如果服务器需要身份验证,则需要设置用户名和密码 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...
# 使用loop_start可以避免阻塞Django进程,使用loop_forever()可能会阻塞系统进程 # client.loop_start()# client.loop_forever()有掉线重连功能 client.loop_forever(retry_first_connection=True)client=mqtt.Client(client_id="test",clean_session=False)# 启动函数 ...
MyMqtt mqtt(clientId, mqtt_host, mqtt_port, username, password); mqtt.loop_start(); // 开始循环 string msg="{"params":{"CurrentTemperature":27.37,"CurrentHumidity":56.8,"version":"ver1.0.1","GeoLocation":{"Longitude":113.987817,"Latitude":34.987895,"Altitude":123.1,"CoordinateSystem":1}}...
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() ...