This RabbitMQ plugin contains few basic examples of RabbitMQ Web MQTT plugin usage.
It starts a server that binds to port 15670 and serves a few static HTML files on port 15670 (e.g. http://127.0.0.1:15670).
This plugin ships with RabbitMQ. Enabled it using CLI tools:
rabbitmq-plugins enable rabbitmq_web_mqtt_examples