client.username_pw_set(username=settings.MQTT_USERNAME, password=settings.MQTT_PASSWORD)#设置mqtt服务器用户名和密码client.on_connect = on_connect client.on_message = on_message rc = client.connect(settings.MQTT_HOST, port=1883, keepalive=60)if(rc==0andiotsubdev.status=="SUBSCRIBED"):print("...
'''userdata='client用户数据,传递给回调函数,可以是任意类型,可以使用Clinet的 user_data_set()函数进行更新数据'protocol='客户端协议的版本,默认是MQTTv311就是3.1.1版本,也可以是MQTTv31、MQTTv5版本''' protocol的参数在源码中是以下对应关系,理论上直接传入对应int值或者导入MQTTv** 字段传入都可 MQTTv31...
# For paho-mqtt 2.0.0, you need to set callback_api_version. # client = mqtt_client.Client(client_id=client_id, callback_api_version=mqtt_client.CallbackAPIVersion.VERSION2) # client.username_pw_set(username, password) client.on_connect = on_connect client.connect(broker, port) return ...
client = mqtt.Client(client_id=DEV_ID, protocol=mqtt.MQTTv311) client.on_connect = on_connect client.on_publish = on_publish client.on_message = on_message client.username_pw_set(username=PRO_ID, password=AUTH_INFO) client.connect('183.230.40.39', port=6002, keepalive=120) client.loop_...
步骤1: 连接到 MQTT 服务器 使用以下代码连接到 MQTT 服务器: importpaho.mqtt.clientasmqtt# 创建一个 MQTT 客户端client=mqtt.Client()# 设置用户名和密码client.username_pw_set("username","password")# 连接到 MQTT 服务器client.connect("mqtt.server.com",1883) ...
importpaho.mqtt.clientasmqttimporttimeHOST="127.0.0.1"PORT=61613defclient_loop():client_id=time.strftime('%Y%m%d%H%M%S',time.localtime(time.time()))client=mqtt.Client(client_id)# ClientId不能重复,所以使用当前时间 client.username_pw_set("admin","123456")# 必须设置,否则会返回「Connectedwith...
mqttc.loop_forever() 说明: Client.username_pw_set(username: str | None, password: str | None = None*) → None 为代理身份验证设置用户名和密码(可选)。 必须在connect()之前调用才能生效。需要支持MQTT v3.1或更高版本的代理。 参数: username– 要进行身份验证的用户名。需要与客户端id没有关系。
mqtt.username_pw_set(username,password)mqtt.tls_set(ca_certs,cert_reqs=ssl.CERT_NONE)mqtt.connect(host,port,60)mqtt.loop_forever() 2.设备上报数据 数据上报就是往平台指定的topic上发布数据 Python defpublish():pubTopic="/huawei/v1/devices/"+deviceId+"/data/json"payload={"msgType":"deviceRe...
发布MQTT 消息 我们可以使用上面介绍的方法建立另一个 MQTT 客户端连接作为消息发布者,向 topic/test 主题发布消息。 String topic = "topic/test"; int qos = 1; String msg = "Hello MQTT"; MqttMessage message = new MqttMessage(msg.getBytes()); message.setQos(qos); client.publish(topic, message...
MQTT的paho.mqtt.python如何设置会话过去间隔,代码如下: mqttc = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2, client_id=hostname, clean_session=False) mqttc.username_pw_set(mqtt_username, mqtt_password) mqttc.on_connect = on_connect mqttc.on_message = on_message mqttc.on_subscribe = on_...