MQTT CLI Testing

• Introduction
• Connect to mosquitto container
• Publishing messages
• Listening messages

Introduction

The mosquitto broker offers us commandline tools to send and receive MQTT messages.

Usage

You should not use these command lines often. Only for debugging/testing purposes.

To get more information about command lines, please refer to the mosquitto documentation. (opens new window). For example, go to mosquitto_pub command line documentation (opens new window).

Connect to mosquitto container

You don't need to install mosquitto to your computer because Bobby has a docker container for it.

Run a sh shell inside it:

docker-compose run mqtt_broker sh

Then you will have access to the following command lines.

Publishing messages

For example, this will turn off an alarm:

mosquitto_pub -h mqtt_broker -p 1883 -t update/alarm/some_device_id -m '{"status": "on"}' -u mx -P coucou

Listening messages

This will listen and print messages.

mosquitto_sub -h 127.0.0.1 -u mx -P coucou -v -t "home-assistant/#"