First Message

Last Updated: 5th February 2026

This example uses mosquitto_pub/mosquitto_sub against the default MQTT TCP listener.

1. Subscribe

mosquitto_sub -p 1883 -t "test/#" -v

2. Publish

mosquitto_pub -p 1883 -t "test/hello" -m "Hello FluxMQ"

You should see the message appear in the subscriber terminal.

Next Steps

• Publishing messages
• Consuming messages