user destinations are not working

[srikrishnacj]

Exact problem was already posted to stackoverflow by another user. But nobody answer to that thead and i am posting it here. I have also sample Github project that shows user destinations are not working.

http://stackoverflow.com/questions/28065489/diagnosing-issues-with-spring-websocket-user-destinations
https://github.com/srikrishnacj/Spring-Boot-Websocket-User-Destinations-Issue

My application.properties as follows

security.user.name=cj
security.user.password=cj

My JavaScript as follows

var socket = new SockJS('/ws');
sc = Stomp.over(socket);
sc.connect({}, function(frame) {
       console.log('Connected: ' + frame);
       sc.subscribe("/user/feed",onr);
       setTimeout(function(){sc.subscribe("/app/feed",onr);},1000);
});
function onr(json){
      console.log(json);
}

My WebSocket Configuration as follows

registry.enableSimpleBroker("/topic");
registry.setApplicationDestinationPrefixes("/app");

My Controller as follows

@SubscribeMapping("/feed")
    public String onAppSubscription(Principal principal) {
        System.out.println("Subscription request to: /app/feed >>> " + principal.getName());
        template.convertAndSendToUser(principal.getName(), "/feed", "Test Message"); // wont work
        return "Subscription Complete"; // this will work
}

What i am doing above is

1. user subscribes to user destination
2. user subscribes to application destination
   -> in controller i am sending a test message to user destintaion via websocket template. but it does not work

[wilkinsona]

You are trying to send a message to /feed but you haven't configured the simple broker to handle such messages. You need to make this change to WebSocketConfig:

-        registry.enableSimpleBroker("/topic");
+        registry.enableSimpleBroker("/topic", "/feed");

In the future, please use Stack Overflow for this sort of question as we prefer to keep GitHub issues for bug reports and enhancement requests.

[srikrishnacj]

Thank you for your response. No one answered that in stackoverflow. so i though it is a issue.
I have little confusion, why should i enable /feed in simple broker, when i am sending and subscribing messages to /user/* and receiving messages from /user/*. I am not directly interacting with /topic.

[wilkinsona]

Thank you for your response. No one answered that in stackoverflow.

I'm not surprised that no one answered on Stack Overflow. Unlike you, the author of the question didn't take the time to provide a minimal example that reproduced the problem.

I have little confusion, why should i enable /feed in simple broker, when i am sending and subscribing messages to /user/* and receiving messages from /user/*. I am not directly interacting with /topic.

This isn't really the right place for this sort of discussion. It's not a bug, and it's functionality in Spring Framework that you're asking about, not Spring Boot.

That said, you are sending a message to /feed:

 template.convertAndSendToUser(principal.getName(), "/feed", "Test Message");

It's more conventional to use a /queue/ prefix, with users subscribing to /user/queue/feed and messages being sent to /queue/feed. You can then configure the broker with /queue/. You can see this in action in @rstoyanchev's WebSocket sample.