client = mqtt.Client(protocol=3) #创建客户端实例 client.username_pw_set("admin", "password") #登录的账号密码 client.on_connect = on_connect #将自定义的回调函数赋值给实例对象 client.on_subscribe = on_subscribe client.on_message = on_message client.connect(host="127.0.0.1", port = 61613,...
mqttc.on_connect = on_connect mqttc.on_publish = on_publish mqttc.on_subscribe = on_subscribe mqttc.on_log = on_log # 设置账号密码 # mqttc.username_pw_set(username, password=password) mqttc.connect(strBroker, port, 60) mqttc.subscribe(topic, 0) mqttc.loop_forever() MqttServer.py...
mqttc.on_connect = on_connect mqttc.on_publish = on_publish mqttc.on_subscribe = on_subscribe mqttc.on_log = on_log # 设置账号密码 # mqttc.username_pw_set(username, password=password) mqttc.connect(strBroker, port, 60) mqttc.subscribe(topic, 0) mqttc.loop_forever() MqttServer.py...
mqttc.on_connect = on_connect mqttc.on_publish = on_publish mqttc.on_subscribe = on_subscribe mqttc.on_log = on_log # 设置账号密码 # mqttc.username_pw_set(username, password=password) mqttc.connect(strBroker, port, 60) mqttc.subscribe(topic, 0) mqttc.loop_forever() MqttServer.py...
client.on_connect = on_connect client.on_message = on_message client.connect("127.0.0.1",1883,60) client.loop_forever() 发送消息 importtime import paho.mqtt.clientas mqtt def on_connect(client, userdata, flags, rc): print("Connected with result code "+str(rc)) ...
(1)Connect。等待与服务器建立连接。 (2)Disconnect。等待MQTT客户端完成所做的工作,并与服务器断开TCP/IP会话。 (3)Subscribe。等待完成订阅。 (4)UnSubscribe。等待服务器取消客户端的一个或多个topics订阅。 (5)Publish。MQTT客户端发送消息请求,发送完成后返回应用程序线程。
mqttClient.connect(MQTT_HOST, MQTT_PORT, 60) mqttClient.loop_start() # 启用线程连接 return mqttClient 5、发布消息 定义一个 while 循环语句,在循环中设置每秒调用 MQTT 客户端publish函数向/python/mqtt主题发送消息。 登录后复制ddef on_publish(): ...
import paho.mqtt.client as mqtt cafile = "/etc/mosquitto/ca/ca.crt" certfile = "/home/ubuntu/CA/client.crt" keyfile = "/home/ubuntu/CA/client.key" user = "guest" passwd = "12345678" server = "localhost" port = 8883 def on_connect(client, userdata, flags, rc): ...
首先是进行获取MQTT的数据,函数API使用实例如下: ##MQTT操作defMQTTWeight():# config._init()client_weight= mqtt.Client()client_weight.on_connect = on_connect_weightclient_weight.on_message = on_message_weightclient_weight.connect('**.**.***....
设置MQTT Broker 连接地址,端口以及 topic,同时调用 Pythonrandom.randint函数随机生成 MQTT 客户端 id。 MQTT_SERVER_IP ="192.168.230.1" MQTT_PORT =1883 4、编写 MQTT 连接函数 编写连接回调函数on_connect,该函数将在客户端连接后会被调用。在该函数中可以依据rc来判断客户端是否连接成功。同时可创建一个 MQTT...