在上述示例代码中,我们首先创建了一个MQTT客户端对象,并指定了连接和发布的回调函数。然后,我们使用connect()方法连接到MQTT服务器,使用username_pw_set()方法设置用户名和密码。接下来,我们通过循环调用publish()方法来发布主题,可以设置消息质量等级(QoS)以及发布的频率。最后,我们使用loop_start()和loop_stop()方法...
MyMqtt(const char *id, const char *host, int port, const char *username, const char *password) : mosquittopp(id) { mosqpp::lib_init(); // 初始化mosquitto库 username_pw_set(username, password); // 设置用户名和密码 connect(host, port, 60); // 连接到MQTT服务器} ~MyMqtt() { dis...
importpaho.mqtt.clientasmqtt# 设置Client IDclient=mqtt.Client(client_id="my_unique_client_id")# 设置用户名和密码client.username_pw_set(username="my_username",password="my_password")# 连接到MQTT代理服务器client.connect("mqtt.eclipse.org",1883)# 开启MQTT客户端循环client.loop_forever() 1. 2....
mosquitto_username_pw_set(mosq, USERNAME, SAS_TOKEN); 此示例使用 MQTT 主题将遥测消息发送到 IoT 中心: C intmsgId =42;charmsg[] ="Bonjour MQTT from Mosquitto";// once connected, we can publish a Telemetry messageprintf("Publishing...\r\n"); rc = mosquitto_publish(mosq, &msgId, TOPIC...
client.username_pw_set(username, password) client.on_connect=on_connect client.connect(broker, port)returnclientdefpublish(client): msg_count=0whileTrue: time.sleep(1) msg= f"messages: {msg_count}"result=client.publish(topic, msg)#result: [0, 1]status =result[0]ifstatus ==0:print(f"Se...
mosquitto_username_pw_set(mosq, USERNAME, SAS_TOKEN); 此範例會使用 MQTT 主題將遙測訊息傳送至 IoT 中樞: C intmsgId =42;charmsg[] ="Bonjour MQTT from Mosquitto";// once connected, we can publish a Telemetry messageprintf("Publishing...\r\n"); rc = mosquitto_publish(mosq, &msgId, TOPIC...
# mqttc.username_pw_set(username, password=password) mqttc.connect(strBroker, port, 60) mqttc.subscribe(topic, 0) mqttc.loop_forever() MqttServer.py import sys import datetime import socket, sys import paho.mqtt.publish as publish
58}59voidMQTTClient::on_unsubscribe(intrc)60{61}62boolMQTTClient::connectToServer()63{64username_pw_set("loadpoint","gl@loadpoint.cn");65auto result = connect(host_.c_str(), port_,60);66if(result ==MOSQ_ERR_SUCCESS)67returntrue;68returnfalse;69}70voidMQTTClient::connectToServer(std:...
mosquitto_username_pw_set(mosq, USERNAME, SAS_TOKEN); 此範例會使用 MQTT 主題將遙測訊息傳送至 IoT 中樞: C intmsgId =42;charmsg[] ="Bonjour MQTT from Mosquitto";// once connected, we can publish a Telemetry messageprintf("Publishing...\r\n"); rc = mosquitto_publish(mosq, &msgId, TOPIC...
client.username_pw_set("yang","11223344")# 必须设置,否则会返回「Connectedwithresult code4」 client.on_connect=on_connect client.on_message=on_message client.connect("mnifdv.cn",1883,60)client.loop_forever() 代码语言:javascript 代码运行次数:0 ...