1 When i run my code it's working fine but after some hours it stop working and show this errorNot able to publish: MQTT client is not connected publicMqtt5AsyncClientconnect(String host,intport){Mqtt5AsyncClientclient=MqttClient.builder().useMqttVersion5() .identifier(UUID.randomUUID().toS...
I'm new to mqtt protocol. I'm having difficult time connecting my mqtt client (which is connected to another network) with my mqtt broker running on my pc with ip address. my mqtt broker is connected to my home wifi where as my client is connected to a different home wifi. I'...
"MQTT 多个实例时候 clientId 一定要加随机数么?我两个实例后,mqtt 就断开链接了,某个实例的链接 就发不了消息了,报错:Client is not connected, 客户端语言:java " 参考答案: 保证clientID唯一,不然会冲突导致互踢哈,随机数也可能重复,目前就是加了随机数,就算不加保证唯一,但是你重连的时候,他好像反应有延...
(client, &connOpts); // int rt = MQTTAsync_reconnect(client); if (rt != MQTTASYNC_SUCCESS) fprintf(stderr, "ERROR MQTT start connect: %d\n", rt); } void onConnect(void * context, MQTTAsync_successData * response) { (*Connected)(); fprintf(stdout, "MQTT connected to host %s\n...
When a client is not connected the queue manager can continue to receive publications on its behalf. They are forwarded to the client when it reconnects. A client can create a "Last will and testament", which the queue manager publishes on behalf of the
connectTimeout: config.mqtt.connectTimeout,//超时时间// port: 8083,clientId: util.random(32),//随机生成IDusername: config.mqtt.userName,//用户名password: config.mqtt.password,//密码}varschoolId = app.userinfo.baseinfo.SchoolId;vartopicName ="realdata/alarmdata/#";varclient = mqtt.connect...
publicvoidreconnect(){try{client.connect();}catch(MqttExceptionme){me.printStackTrace();}} 1. 2. 3. 4. 5. 6. 7. 2.5 检查连接状态 最后,我们需要检查连接状态,以确保客户端已成功连接到 MQTT 服务器。以下是检查连接状态的代码示例: publicvoidcheckConnection(){try{if(client.isConnected()){System...
Successfully connected to Wi-Fi network 'Internet'.IPv4 Address Assigned: 192.168.61.155MQTT library initialization successful.MQTT client 'pasco2-mqtt-client8087' connecting to MQTT broker 'a2h2lsva91rwxv-ats.iot.eu-north-1.amazonaws.com'......
console.log("Connected"); message= new Paho.MQTT.Message("I am Connected"); message.destinationName="ping"; mqtt.send(message); } function MQTTconnect(){ console.log("Connecting to host"); mqtt=new Paho.MQTT.Client(host,port,"ping"); ...