I have a game server that uses websocket for real time multiplayers. It is a Spring 4 application and I use RabbitMQ as my broker. This is my configuration:
<websocket:message-broker application-destination-prefix="/app">
<websocket:stomp-endpoint path="/portfolio">
<websocket:sockjs/>
</websocket:stomp-endpoint>
<websocket:simple-broker prefix="/queue, /topic"/>
</websocket:message-broker>
From a very small test with 4 clients I saw 4 connections open on Rabbit.
Does each client that connects to my server using websocket eventually open a new connection to the broker (RabbitMQ)? Can this be configured?
Yes, each websocket client gets its own TCP connection to the broker. The documentation has a section for connections to the broker (emphasis mine):
A STOMP broker relay maintains a single "system" TCP connection to the broker. This connection is used for messages originating from the server-side application only, not for receiving messages. [...]
The STOMP broker relay also creates a separate TCP connection for every connected WebSocket client. [ ... ]
If this can be configured or not I don't know, I'm not all that familiar with this part of Spring, but I assume it should be; Spring is open to extension. My suggestion is to post an issue on the spring-websocket-portfolio project and ask for specifics.
EDIT : OP opened the following issue on the spring-websocket-portfolio project.