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I'm using jwt for authentication, I'm suspecting that it has something to do with the request header which has the token.

Receiving a server sent event without adding @PreAuthorize works just fine:

@GetMapping("/sse")
public SseEmitter serverSentEvent() throws IOException
   SseEmitter emitter = new SseEmitter(2592000000L);
   emitter.send("OK");
   return emitter;
How ever when i add @PreAuthorize to check use role, i get a 406 response (can’t establish a connection to the server at http://localhost:8080/sse)
@GetMapping("/sse")
@PreAuthorize("hasRole('ADMIN')")
public SseEmitter serverSentEvent() throws IOException
   SseEmitter emitter = new SseEmitter(2592000000L);
   emitter.send("OK");
   return emitter;
                HTTP 406 is "Not Acceptable", so the hint may be that you require an accept header.  It may also be the case that your endpoint needs to accept some MIME-type as well (like application/json or something more appropriate).
– Makoto
                Dec 20, 2018 at 17:29
                I'm using EventSource on the client, which sends a GET request to the URL with the accept header text/event-stream
– Muizz Mahdy
                Dec 20, 2018 at 17:38
        
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