@Bean
    public DiscoveryUpstreamDataHandler webSocketUpstreamDataHandler() {
        return new WebSocketUpstreamDataHandler();
    }
websocket discovery upstream data handler.

@return the websocket upstream data handler
shenyu-spring-boot-starter/shenyu-spring-boot-starter-plugin/shenyu-spring-boot-starter-plugin-websocket/src/main/java/org/apache/shenyu/springboot/plugin/websocket/WebSocketPluginConfiguration.java