spring.rabbitmq.host=127.0.0.1
spring.rabbitmq.port=5672
spring.rabbitmq.username=guest
spring.rabbitmq.password=guest

@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfig extends AbstractWebSocketMessageBrokerConfigurer {

    @Override
    public void configureMessageBroker(MessageBrokerRegistry registry) {

        registry.enableStompBrokerRelay("/topic","/queue/");
        registry.setApplicationDestinationPrefixes("/app");


    }
}

Protocol    Bound to    Port
amqp        127.0.0.1   5672
clustering  ::          25672
http        0.0.0.0     15672
http        ::          15672

Failed to connect to reactor.io.net.impl.netty.tcp.NettyTcpClient