Can we use WebSocket sink, in Spring cloud stream app starters, as WebSocket source?

Question

Can I use the WebSocket sink available in Spring Cloud Stream App Starters as WebSocket Source. So that when I start the source the clients can send messages to the source as there is a websocket server listening on a specific port.

Answer 1

The existing sink for websocket won't work as a source out of the box. The sink receives the data from a middleware and send that to the sink. In the case of a source, its the other way around, ie it receives messages from a websocket endpoint and sends that to the middleware. The option at this point is to provide a custom websocket source from your side until a formal websocket-source is available. If you go with this route, please consider contributing that back to spring-cloud-stream-app-starters . Spring Integration has excellent coverage for web sockets . You can use that as a starter.