MQTTX

This tutorial shows how to use MQTTX for connecting to a broker and make subscriptions and publishing of messages via MQTT.

1) Go to https://mqttx.app/web-client# and click on "+ New Connection" button.

2) Write your name and keep the default settings (e.g. host is wss://broker.emqx.io). Then click on "Connect".

3) Click on "+ New Subscription" to subscribe to a topic. Then enter the name of the topic, customize the settings (if needed), and finally click on "Confirm".

4) A message can be published by setting the topic, the message content, and finally clicking on the green button.