Spring, how to broadcast message to connected clients using websockets?

Question

I am trying to use websockets in my app. I have followed this tutorial: http://spring.io/guides/gs/messaging-stomp-websocket/

It works perfectly.

When one of

Answer 1

@SendTo works only in the SimpAnnotationMethodMessageHandler, which is initiated only through the SubProtocolWebSocketHandler, hance when the WebSocketMessage is received from clients.

To achieve your requirements you should inject to the your @Scheduled service SimpMessagingTemplate brokerMessagingTemplate and use it directly:

@Autowired
private SimpMessagingTemplate brokerMessagingTemplate;
.......
this.brokerMessagingTemplate.convertAndSend("/topic/greetings", "foo");