@Configuration
class WebSocketConfig : WebSocketMessageBrokerConfigurer {
    override fun configureMessageBroker(config: MessageBrokerRegistry) {
        config.enableSimpleBroker("/topic")
        config.setApplicationDestinationPrefixes("/app")
    }

    override fun registerStompEndpoints(registry: StompEndpointRegistry) {
        registry.addEndpoint("/gs-guide-websocket").setAllowedOrigins("*").withSockJS()
    }
}