top.zhacker.ms.reactor.webflux.controllers.EchoWebSocketHandler.java Source code

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Here is the source code for top.zhacker.ms.reactor.webflux.controllers.EchoWebSocketHandler.java

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/*
 * Copyright 2002-2016 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package top.zhacker.ms.reactor.webflux.controllers;

import java.time.Duration;

import reactor.core.publisher.Mono;

import org.springframework.web.reactive.socket.WebSocketHandler;
import org.springframework.web.reactive.socket.WebSocketMessage;
import org.springframework.web.reactive.socket.WebSocketSession;

/**
 * WebSocketHandler that echoes the input with a delay of 2 seconds.
 */
public class EchoWebSocketHandler implements WebSocketHandler {

    @Override
    public Mono<Void> handle(WebSocketSession session) {
        // Use retain() for Reactor Netty
        return session
                .send(session.receive().doOnNext(WebSocketMessage::retain).delayElements(Duration.ofSeconds(2)));
    }
}