The best way to install revoke/websockets-rabbitmq is using Composer:
$ composer require revoke/websockets-rabbitmq
After that you have to register extension in config.neon.
extensions:
webSocketsRabbitMQ: Revoke\WebSocketsRabbitMQ\DI\WebSocketsRabbitMQExtension
Learn how to create WebSockets pusher & consumer in documentation.
Homepage http://www.ipublikuj.eu and repository http://github.com/iPublikuj/websockets-zmq.