You do still need to fix your on_connect callback as @Kiran says. There is no need to disconnect each time - and in fact there is no guarantee your message will have been sent when you do disconnect. You should use the on_publish callback to know when the message ...
When i use koa+mqtt to build a push service, i found a problem , client publish callback function not working,this is my example code const mqtt = require('mqtt'); const client = mqtt.connect('mqtt://test.mosquitto.org:1883'); const Koa = require('koa'); const app = new Koa()...
Android Version Bug Seen on:7 Please also check that if you have found the bug in the Release version (1.1.1) that you check that it also exists in the Snapshot (1.1.2-SNAPSHOT) before raising a bug. Description of Bug: Mqtt SSL connection is not working in Android Nougat and this...
ENOTFOUNDEvent 'end'function () {}Emitted when mqtt.Client#end() is called. If a callback was passed to mqtt.Client#end(), this event is emitted once the callback returns.Event 'message'function (topic, message, packet) {}Emitted when the client receives a publish packettopic topic of...
When you need to add a custom websocket subprotocol or header to open a connection through a proxy with custom authentication this callback allows you to create your own instance of a websocket which will be used in the mqtt client.
publish() is working fine while sending the message. Broker is mosquitto. I have even used callback() but no response. Here is the code. It actually reads the card tag, sends it to broker and based on the card tag sent, another client on linux sends back a message which I am ...
userContext- optional object for used to pass context to the callback. Use null if not required. callback- optional listener that will be notified when the connect completes. Use null if not required. Returns: token used to track and wait for the connect to complete. The token ...
Steve, thanks for this tutorial. One question, I was developing some mqtt projects with Arduino and the mqtt library, however I could not make the callback function to work with a gars interface. Now, the actual question is about the use of the ping messages to make sure the connection ...
In my callback function I want to do different actions according to the message received. Can I use a wildcard to test the callback received ‘topic’ such as (not real code) If (strcmp(#/#/light/status) ==’on’)) …… Or do I need to manually test each topic branch condition ...
setCallback(callback); //Connect to Azure IOT if (!Esp32MQTTClient_Init((const uint8_t*)connectionString)) { hasIoTHub = false; Serial.println("Azure IoT Hub : Initializing IoT hub failed."); return; } hasIoTHub = true; } void MQTTConnect() { // ...