reconnect_delay_set函数允许你设置重连的时间范围。 4. 发布和订阅消息 连接成功后,可以发布和订阅 MQTT 消息。 client.connect("mqtt.eclipse.org",1883,60)# 连接到 MQTT Brokerclient.subscribe("test/topic")# 订阅主题client.publish("test/topic","Hello, MQTT!")# 发布消息 1. 2. 3. 这些代码连接到...
= 0: print("Disconnected from MQTT Broker with result code " + str(rc)) client.reconnect_delay_set(min_delay=1, max_delay=120) client.connect(broker_address, broker_port, keep_alive_interval) client.on_disconnect = on_disconnect 示例代码: 以下是一个完整的示例代码,展示了如何设置和维持...
level变量给出了消息的严重性,并且将是MQTT_LOG_INFO,MQTT_LOG_NOTICE,MQTT_LOG_WARNING,MQTT_LOG_ERR和MQTT_LOG_DEBUG中的一个。 buf变量用于存储信息。 (三)方法 1.构造函数Client() Client(client_id="", clean_session=True, userdata=None, protocol=MQTTv311, transport="tcp") 示例: importpaho.mqt...
client.on_message=on_message# 连接MQTT服务器try:client.connect(BROKER,PORT,60)client.loop_start()# 启动循环以处理网络流量# 发送一条消息client.publish(TOPIC,"Hello MQTT!")# 关闭重连机制client.reconnect_delay_set(min_delay=0,max_delay=0)# 设置重连延迟为 0exceptExceptionase:print(f"发生异常:{...
MQTTv311 = 4 MQTTv5 = 5 '''transport='底层传输协议,默认是使用原始tcp,值可以设置为websockets通过ws发送mqtt'reconnect_on_failure='bool类型, 连接失败后是否自动重新connect,默认为True''' 官方文档没有reconnect_on_failure相关示例和解释,不确定老版本有没有该字段 '...
Paho MQTT 客户端的自动重连代码如下: FIRST_RECONNECT_DELAY =1RECONNECT_RATE =2MAX_RECONNECT_COUNT =12MAX_RECONNECT_DELAY =60defon_disconnect(client, userdata, rc): logging.info("Disconnected with result code: %s", rc) reconnect_count, reconnect_delay =0, FIRST_RECONNECT_DELAYwhilereconnect_count...
thank you very much ! do you mean that i reduce the max_delay seconds,like: client.connect(self.mqtt['server'], port=self.mqtt['port']) client.loop_start() client.reconnect_delay_set(min_delay=1, max_delay=30) while True:
host='mqtt-sample-sh-public.mqtt.tencenttdmq.com' port=1883 topic="home/room/1" client_id='QuickStart' username='your-username' password='your-password' FIRST_RECONNECT_DELAY=1 RECONNECT_RATE=2 MAX_RECONNECT_COUNT=12 MAX_RECONNECT_DELAY=60 ...
The auto reconnect code for the Paho MQTT client is as follows: FIRST_RECONNECT_DELAY =1RECONNECT_RATE =2MAX_RECONNECT_COUNT =12MAX_RECONNECT_DELAY =60defon_disconnect(client, userdata, rc): logging.info("Disconnected with result code: %s", rc) ...
client.on_disconnect=on_disconnect# 设置自动重连机制client.reconnect_delay_set(min_delay=1,max_delay=120) 1. 2. 3. 4. 5. 6. 5. 连接到 MQTT 代理并循环处理消息 最后,我们需要连接到 MQTT 代理,并启动一个循环来监听消息。 # 连接到 MQTT 代理client.connect("broker.hivemq.com",1883,60)# ...