Spring boot, WebSocket doesn't send notification to the specified user

Question

I have such problem in sending notification to the specified user. This is my config file.

@Override
public void registerStompEndpoints(StompEndpointRegistry registry) {
    registry.addEndpoint("/ws")
            .withSockJS();
}

@Override
public void configureMessageBroker(MessageBrokerRegistry registry) {
    registry.setApplicationDestinationPrefixes("/app");
    //registry.enableSimpleBroker("/topic");
}

This one is my client code

$(document).ready(function () {
connect();

}

function connect() {
var socket = new SockJS('/ws');
stompClient = Stomp.over(socket);
stompClient.connect({}, function () {
    stompClient.subscribe("/user/queue/reply", function (notification) {
        console.log("------------------------ subscribed !!!!!!");
        notify(JSON.parse(notification.body).content);
    });
});

}

This controller handles all chat related handler methods

@MessageMapping("/message")
@SendToUser("/queue/reply")
public ChatMessage processMessageFromClient(@Payload ChatMessage chatMessage) throws Exception {
    return chatMessage;
}

Guys seems I am new in Spring boot websocket sphere, and please tell me whether or not it is enough for sending notification to the specified user. Instead, when I execute the aforementioned client code, it's me, the user principal, who gets notified, not the needed user. What have I done wrong here? It says, that spring boot keeps the session id under the hood, and uses it to resole who to send the notification. But seems it is not the case here...

Here is the browser log, when notification send button is clicked.

Opening Web Socket...
stomp.min.js:8 Web Socket Opened...
stomp.min.js:8 >>> CONNECT
accept-version:1.1,1.0
heart-beat:10000,10000
stomp.min.js:8 <<< CONNECTED
version:1.1
heart-beat:0,0
user-name:hmkhitaryan
stomp.min.js:8 connected to server undefined
stomp.min.js:8 >>> SUBSCRIBE
id:sub-0
destination:/user/queue/reply
stomp.min.js:8 >>> SEND
destination:/app/message
content-length:71
{"sender":"hmkhitaryan","content":"friend request","type":"FR_REQUEST"}
stomp.min.js:8 <<< MESSAGE
destination:/user/queue/reply
content-type:application/json;charset=UTF-8
subscription:sub-0
message-id:xgec4kaf-15
content-length:71
{"type":"FR_REQUEST","content":"friend request","sender":"hmkhitaryan"}

The thing is, that instead of sending "hmkhitaryan1", the next user, it sends to me, "hmkhitaryan".

Dear manikant gautam, there are not error logs in the server side. — Hayk Mkhitaryan, Jul 24 '18 at 07:40
I think since you are sending to a `/user/queue/reply`, that means all users connected to this channel will get a message, in that case, both users. You need to send to specific channel like `/user/{user_id}/queue/reply` — Luiz E., Jul 24 '18 at 08:17
maybe "/{user_id}/queue/reply" ? because @SendToUser annotation already does the job, inserts "user" word. — Hayk Mkhitaryan, Jul 24 '18 at 08:33

voucher_wolves · Answer 1 · 2018-07-24T09:13:54.230

0

You can use convertandSend to reply to specific user. Like this -

@Controller
public class GreetingController {

@Autowired
private SimpMessageSendingOperations  template ;


@MessageMapping("/message")
public void greeting(@Payload String message, 
          Principal principal){

    template.convertAndSendToUser(<userName_youwant_tosend>,"/queue/queue1",message);
 }
}

and in your config class -

@Override
public void configureMessageBroker(MessageBrokerRegistry config) {
    config.enableSimpleBroker("/topic","/queue","/user");
    config.setApplicationDestinationPrefixes("/app");
    config.setUserDestinationPrefix("/user");
}

I was facing the same problem with sendToUser. But this worked for me.Hope it helps.

edited Jul 24 '18 at 09:13

answered Jul 24 '18 at 09:05

voucher_wolves

565
10
20

Dear @yashpandey, what do you mean "queue1" , by writing "/queue/queue1" ? do you mean "queue/reply" ? – Hayk Mkhitaryan Jul 25 '18 at 10:25
@HaykMkhitaryan yes, /queue/reply, just replace queue1 with reply – voucher_wolves Jul 25 '18 at 11:26
Sorry, but did not work `@MessageMapping("/message") public void greeting(@Payload ChatMessage chatMessage, Principal principal) { messagingTemplate.convertAndSendToUser(chatMessage.getReceiver(), "/queue/reply", chatMessage.getContent()); }` – Hayk Mkhitaryan Jul 25 '18 at 11:30
@HaykMkhitaryan did you put "/user" in setUserDestinationPrefix and enableSimpleBroker ? – voucher_wolves Jul 25 '18 at 11:49
`@Override public void configureMessageBroker(MessageBrokerRegistry registry) { registry.setApplicationDestinationPrefixes("/app"); registry.enableSimpleBroker("/topic", "/queue", "/user"); registry.setUserDestinationPrefix("/user"); } ` – Hayk Mkhitaryan Jul 25 '18 at 11:53
I have some implementation here, you can check https://github.com/yashpandey8055/SimpleWebsocketExample – voucher_wolves Jul 25 '18 at 12:21

Spring boot, WebSocket doesn't send notification to the specified user

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