Add this annotation to an @Configuration class to enable broker-backed messaging over WebSocket using a higher-level messaging sub-protocol.

@Configuration
@EnableWebSocketMessageBroker
public class MyWebSocketConfig {

}

Customize the imported configuration by implementing the WebSocketMessageBrokerConfigurer interface:

@Configuration
@EnableWebSocketMessageBroker
public class MyConfiguration implements WebSocketMessageBrokerConfigurer {

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

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