Confused

[Marc Schipperheyn]

Trying to learn stomp. The example uses /hello both as an endpoint and as a MessageMapping. I understand them to be different things.

[Rossen Stoyanchev]

Indeed the endpoint is the HTTP URL for the SockJS endpoint while the MessageMapping maps the destination from individual STOMP messages that subsequently flow on that SockJS session.

[Marc Schipperheyn]

Less confused now ;-) But still struggling with: http://stackoverflow.com/questions/37657783/spring-session-websocket-security-integration-flow It's not a cut and dried topic

[Kyle Anderson]

Coming at this for the first time, I can relate that the different mappings aren't clear to me.

The client-side application flow seems to be this:

1. localhost:8080
2. Connect Button triggers AJAX call to /hello/info
3. Followed by a 101 Switching Protocols to WS
4. Then the client subscribes to /topic/greetings
5. Send Name Button sends a message to /app/hello containing the name from the text field
6. Client receives greeting message over WS subscription /topic/greetings

That's fairly understandable. But on the server side you've got @MessageMapping("/hello") on the Controller and in your Websocket config: registry.addEndpoint("/hello").withSockJS();

Also the Controller has @sendto("/topic/greetings") and in the Config there is config.enableSimpleBroker("/topic");

Finally there is config.setApplicationDestinationPrefixes("/app"); in the Config.

It's confusing to see the duplicate & overlapping endpoints without a full explanation of what they are all doing.