Mosquitto: Testing with mosquitto_pub and mosquitto_sub

This documentation is part of the Getting Started guide. You can view the complete guide here: How to Begin with Mosquitto.

👋 Welcome to the Stackhero documentation!

Stackhero offers a ready-to-use Mosquitto MQTT cloud solution that provides a host of benefits, including:

• Unlimited message exchanges and transfers.
• Unlimited devices authentication via an external API.
• Advanced ACLs on topics, users and actions.
• Customisable domain name secured with HTTPS (for example, https://mqtt.your-company.com).
• Effortless updates with just a click.
• Optimal performance and robust security powered by a private and dedicated VM.

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The mosquitto_pub and mosquitto_sub CLI tools are excellent for testing MQTT setups. Before using them, ensure that the "Allow clear connections" option is disabled in your Mosquitto configuration on the Stackhero dashboard.

Here is how you can test:

1. Subscribe to all topics using the # wildcard:

   mosquitto_sub -L -d "mqtts://admin:<PASSWORD>@<XXXXXX>.stackhero-network.com:<PORT_TLS>/#"
   

2. Open another terminal to publish a message to a topic:

   mosquitto_pub -L -d "mqtts://admin:<PASSWORD>@<XXXXXX>.stackhero-network.com:<PORT_TLS>/sensor/a" -m "It works"
   

In the first console, you should see the published message along with debug logs enabled by the -d flag.