基于Netty最简单的WebSocket通讯

淡淡的烟草味﹌ 2022-05-16 02:48 287阅读 0赞

# 基于Netty最简单的WebSocket通讯 #

*  基于Netty最简单的WebSocket通讯
    
     *  总览
     *  服务端
        
         *  EasyWsServer
         *  EasyWsServerHandler
     *  客户端
        
         *  EasyWsClient
         *  EasyWsClientHandler
     *  测试类
        
         *  EasyWsTest
     *  测试

## 总览 ##

1.  总共是五个文件：  
    
    
     *  client  
        
        
         *  EasyWsClient 客户端
         *  EasyWsClientHandler 客户端消息处理类
     *  server  
        
        
         *  EasyWsServer 服务端
         *  EasyWsServerHandler 服务端消息处理类
     *  EasyWsTest 测试类  
          
        
2.  EasyWsServer启动时需要声明一个ServerBootstrap，ServerBootstrap里面初始化需要添加一个handler。  
      
    
3.  WebSocket通讯和普通的tcp通讯不同的是，他有2个格式的消息需要处理  
    
    
     *  流程：  
        
        
         *  http请求握手
         *  握手完成后的长连接通讯
     *  消息  
        
        
         *  http消息，如：FullHttpRequest、FullHttpResponse等
         *  websocket消息，如TextWebSocketFrame(文本类消息)，BinaryWebSocketFrame(字节类数据)等  
              
            
4.  客户端第一次发送http握手请求的时候，需要使用WebSocketClientHandshaker
5.  里面处理了文本消息，二进制字节消息。

## 服务端 ##

### EasyWsServer ###

/* * Copyright (C), 2015-2018 * FileName: EasyWsServer * Author: zhao * Date: 2018/8/14 10:43 * Description: 简单的WebScoket服务器 * History: * <author> <time> <version> <desc> * 作者姓名 修改时间 版本号 描述 */
 package com.lizhaoblog.demopro.websocket.server;
 
 import io.netty.bootstrap.ServerBootstrap;
 import io.netty.channel.Channel;
 import io.netty.channel.ChannelFuture;
 import io.netty.channel.ChannelInitializer;
 import io.netty.channel.ChannelPipeline;
 import io.netty.channel.EventLoopGroup;
 import io.netty.channel.nio.NioEventLoopGroup;
 import io.netty.channel.socket.nio.NioServerSocketChannel;
 import io.netty.handler.codec.http.HttpObjectAggregator;
 import io.netty.handler.codec.http.HttpServerCodec;
 import io.netty.handler.stream.ChunkedWriteHandler;
 
 /** * 〈一句话功能简述〉 * 〈简单的WebScoket服务器〉 * * @author zhao * @date 2018/8/14 10:43 * @since 1.0.1 */
 public class EasyWsServer { 
 private int port;
 
 public EasyWsServer(int port) {
 this.port = port;
 }
 
 public void start() throws InterruptedException {
 ServerBootstrap serverBootstrap = new ServerBootstrap();
 EventLoopGroup bossGroup = new NioEventLoopGroup();
 EventLoopGroup workerGroup = new NioEventLoopGroup();
 serverBootstrap.group(bossGroup, workerGroup);
 serverBootstrap.channel(NioServerSocketChannel.class);
 serverBootstrap.childHandler(new ChannelInitializer() {
 @Override
 protected void initChannel(Channel channel) throws Exception {
 ChannelPipeline pipeline = channel.pipeline();
 pipeline.addLast("http-codec", new HttpServerCodec()); // Http消息编码解码
 pipeline.addLast("aggregator", new HttpObjectAggregator(65536)); // Http消息组装
 pipeline.addLast("http-chunked", new ChunkedWriteHandler()); // WebSocket通信支持
 pipeline.addLast(new EasyWsServerHandler());
 }
 });
 
 // 监听端口
 ChannelFuture channelFuture = serverBootstrap.bind(port).sync();
 channelFuture.awaitUninterruptibly();
 // 堵塞线程，保持长连接
 channelFuture.channel().closeFuture().sync();
 }
 
 }

### EasyWsServerHandler ###

/* * Copyright (C), 2015-2018 * FileName: EasyWsServerHandler * Author: zhao * Date: 2018/8/14 10:44 * Description: 简单的WebSocket服务器 * History: * <author> <time> <version> <desc> * 作者姓名 修改时间 版本号 描述 */
 package com.lizhaoblog.demopro.websocket.server;
 
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
 import io.netty.channel.ChannelFuture;
 import io.netty.channel.ChannelFutureListener;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.SimpleChannelInboundHandler;
 import io.netty.handler.codec.http.DefaultFullHttpResponse;
 import io.netty.handler.codec.http.FullHttpRequest;
 import io.netty.handler.codec.http.FullHttpResponse;
 import io.netty.handler.codec.http.HttpHeaderNames;
 import io.netty.handler.codec.http.HttpResponseStatus;
 import io.netty.handler.codec.http.HttpUtil;
 import io.netty.handler.codec.http.HttpVersion;
 import io.netty.handler.codec.http.websocketx.BinaryWebSocketFrame;
 import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;
 import io.netty.handler.codec.http.websocketx.WebSocketFrame;
 import io.netty.handler.codec.http.websocketx.WebSocketServerHandshaker;
 import io.netty.handler.codec.http.websocketx.WebSocketServerHandshakerFactory;
 import io.netty.util.CharsetUtil;
 
 /** * 〈一句话功能简述〉 * 〈简单的WebSocket服务器〉 * * @author zhao * @date 2018/8/14 10:44 * @since 1.0.1 */
 public class EasyWsServerHandler extends SimpleChannelInboundHandler<Object> {
 @Override
 protected void channelRead0(ChannelHandlerContext channelHandlerContext, Object msg) throws Exception {
 if (msg instanceof FullHttpRequest) {
 // 传统的HTTP接入
 handleHttpMessage(channelHandlerContext, msg);
 } else if (msg instanceof WebSocketFrame) {
 // WebSocket接入
 handleWebSocketMessage(channelHandlerContext, msg);
 }
 
 }
 
 /** * 处理WebSocket中的Http消息 * * @param ctx 上下文 * @param msg 消息 */
 private void handleHttpMessage(ChannelHandlerContext ctx, Object msg) {
 // 传统的HTTP接入
 FullHttpRequest request = (FullHttpRequest) msg;
 
 // 如果HTTP解码失败，返回HHTP异常
 if (!request.decoderResult().isSuccess() || (!"websocket".equals(request.headers().get("Upgrade")))) {
 sendHttpResponse(ctx, request, new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.BAD_REQUEST));
 return;
 }
 
 // 正常WebSocket的Http连接请求，构造握手响应返回
 WebSocketServerHandshakerFactory wsFactory = new WebSocketServerHandshakerFactory(
 "ws://" + request.headers().get(HttpHeaderNames.HOST), null, false);
 WebSocketServerHandshaker handshaker = wsFactory.newHandshaker(request);
 if (handshaker == null) { // 无法处理的websocket版本
 WebSocketServerHandshakerFactory.sendUnsupportedVersionResponse(ctx.channel());
 } else { // 向客户端发送websocket握手,完成握手
 handshaker.handshake(ctx.channel(), request);
 }
 }
 
 /** * Http返回 * * @param ctx * @param request * @param response */
 public static void sendHttpResponse(ChannelHandlerContext ctx, FullHttpRequest request, FullHttpResponse response) {
 // 返回应答给客户端
 if (response.status().code() != 200) {
 ByteBuf buf = Unpooled.copiedBuffer(response.status().toString(), CharsetUtil.UTF_8);
 response.content().writeBytes(buf);
 buf.release();
 HttpUtil.setContentLength(response, response.content().readableBytes());
 }
 
 // 如果是非Keep-Alive，关闭连接
 ChannelFuture f = ctx.channel().writeAndFlush(response);
 if (!HttpUtil.isKeepAlive(request) || response.status().code() != 200) {
 f.addListener(ChannelFutureListener.CLOSE);
 }
 }
 
 /** * 处理WebSocket中的WebSocket消息 * * @param ctx 上下文 * @param msg 消息 */
 private void handleWebSocketMessage(ChannelHandlerContext ctx, Object msg) {
 // ByteBuf content = ((WebSocketFrame) msg).content();
 WebSocketFrame frame = (WebSocketFrame) msg;
 if (frame instanceof TextWebSocketFrame) {
 TextWebSocketFrame textFrame = (TextWebSocketFrame) frame;
 System.out.println("服务器：接收到你的TextWebSocketFrame消息，内容是 " + textFrame.text());
 
 // 返回消息给客户端
 ctx.writeAndFlush(new TextWebSocketFrame("我是服务器，我是服务器"));
 
 } else if (frame instanceof BinaryWebSocketFrame) {
 System.out.println("服务器：接收到你的BinaryWebSocketFrame消息，内容是 ");
 ByteBuf content = frame.content();
 byte[] result = new byte[content.readableBytes()];
 content.readBytes(result);
 for (byte b : result) {
 System.out.print(b);
 System.out.print(",");
 }
 System.out.println();
 ctx.writeAndFlush(new BinaryWebSocketFrame(Unpooled.copiedBuffer(result)));
 }
 
 }
 
 @Override
 public void channelActive(ChannelHandlerContext ctx) {
 System.out.println("服务器：连接建立");
 }
 
 @Override
 public void channelInactive(ChannelHandlerContext ctx) {
 System.out.println("服务器：断开连接");
 }
 
 @Override
 public void exceptionCaught(ChannelHandlerContext ctx, Throwable throwable) {
 System.out.println("服务器：异常发送");
 throwable.printStackTrace();
 }
 
 }

## 客户端 ##

### EasyWsClient ###

/* * Copyright (C), 2015-2018 * FileName: EasyWsClient * Author: zhao * Date: 2018/8/14 10:23 * Description: 最简单的websocket客户端 * History: * <author> <time> <version> <desc> * 作者姓名 修改时间 版本号 描述 */
 package com.lizhaoblog.demopro.websocket.client;
 
 import java.net.URI;
 import java.net.URISyntaxException;
 
 import io.netty.bootstrap.Bootstrap;
 import io.netty.buffer.Unpooled;
 import io.netty.channel.Channel;
 import io.netty.channel.ChannelFuture;
 import io.netty.channel.ChannelInitializer;
 import io.netty.channel.ChannelPipeline;
 import io.netty.channel.EventLoopGroup;
 import io.netty.channel.nio.NioEventLoopGroup;
 import io.netty.channel.socket.nio.NioSocketChannel;
 import io.netty.handler.codec.http.DefaultHttpHeaders;
 import io.netty.handler.codec.http.HttpClientCodec;
 import io.netty.handler.codec.http.HttpObjectAggregator;
 import io.netty.handler.codec.http.websocketx.BinaryWebSocketFrame;
 import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;
 import io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker;
 import io.netty.handler.codec.http.websocketx.WebSocketClientHandshakerFactory;
 import io.netty.handler.codec.http.websocketx.WebSocketVersion;
 
 /** * 〈一句话功能简述〉 * 〈最简单的websocket客户端〉 * * @author zhao * @date 2018/8/14 10:23 * @since 1.0.1 */
 public class EasyWsClient {
 private static EventLoopGroup group = new NioEventLoopGroup();
 // private static final String ip = "127.0.0.1";
 // private static final int port = 8088;
 
 private String ip;
 private int port;
 private String uriStr;
 private static EasyWsClientHandler handler;
 
 public EasyWsClient(String ip, int port) {
 this.ip = ip;
 this.port = port;
 uriStr = "ws//" + ip + ":" + port;
 }
 
 public void run() throws InterruptedException, URISyntaxException {
 // 主要是为handler(自己写的类)服务，用于初始化EasyWsHandle
 URI wsUri = new URI(uriStr);
 WebSocketClientHandshaker webSocketClientHandshaker = WebSocketClientHandshakerFactory
 .newHandshaker(wsUri, WebSocketVersion.V13, null, true, new DefaultHttpHeaders(), 100 * 1024 * 1024);
 handler = new EasyWsClientHandler(webSocketClientHandshaker);
 
 // 设置Bootstrap
 Bootstrap bootstrap = new Bootstrap();
 bootstrap.group(group);
 bootstrap.channel(NioSocketChannel.class);
 
 bootstrap.handler(new ChannelInitializer() {
 @Override
 protected void initChannel(Channel ch) {
 ChannelPipeline pipeline = ch.pipeline();
 pipeline.addLast(new HttpClientCodec());
 pipeline.addLast(new HttpObjectAggregator(65536));
 pipeline.addLast(handler);
 }
 });
 
 // 连接服务端
 ChannelFuture channelFuture = bootstrap.connect(ip, port).sync();
 handler.handshakeFuture().sync();
 
 // 传输文本
 TextWebSocketFrame frame = new TextWebSocketFrame("hello");
 channelFuture.channel().writeAndFlush(frame);
 // 传输二进制字节数据
 byte[] bytes = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
 BinaryWebSocketFrame byteFrame = new BinaryWebSocketFrame(Unpooled.copiedBuffer(bytes));
 channelFuture.channel().writeAndFlush(byteFrame);
 
 // 堵塞线程，保持长连接
 channelFuture.channel().closeFuture().sync();
 }
 
 }

### EasyWsClientHandler ###

/* * Copyright (C), 2015-2018 * FileName: EasyWsClientHandler * Author: zhao * Date: 2018/8/14 10:23 * Description: 最简单的WebSocket的handle * History: * <author> <time> <version> <desc> * 作者姓名 修改时间 版本号 描述 */
 package com.lizhaoblog.demopro.websocket.client;
 
 import io.netty.buffer.ByteBuf;
 import io.netty.channel.Channel;
 import io.netty.channel.ChannelFuture;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.ChannelPromise;
 import io.netty.channel.SimpleChannelInboundHandler;
 import io.netty.handler.codec.http.FullHttpResponse;
 import io.netty.handler.codec.http.websocketx.BinaryWebSocketFrame;
 import io.netty.handler.codec.http.websocketx.CloseWebSocketFrame;
 import io.netty.handler.codec.http.websocketx.PongWebSocketFrame;
 import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;
 import io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker;
 import io.netty.handler.codec.http.websocketx.WebSocketFrame;
 import io.netty.util.CharsetUtil;
 
 /** * 〈一句话功能简述〉 * 〈最简单的WebSocket的handle〉 * * @author zhao * @date 2018/8/14 10:23 * @since 1.0.1 */
 public class EasyWsClientHandler extends SimpleChannelInboundHandler<Object> {
 private final WebSocketClientHandshaker handshaker;
 private ChannelPromise handshakeFuture;
 
 public EasyWsClientHandler(WebSocketClientHandshaker handshaker) {
 this.handshaker = handshaker;
 }
 
 public ChannelFuture handshakeFuture() {
 return handshakeFuture;
 }
 
 @Override
 public void handlerAdded(ChannelHandlerContext ctx) {
 handshakeFuture = ctx.newPromise();
 }
 
 @Override
 public void channelActive(ChannelHandlerContext ctx) throws Exception {
 System.out.println("客户端连接建立");
 // 在通道连接成功后发送握手连接
 handshaker.handshake(ctx.channel());
 super.channelActive(ctx);
 }
 
 @Override
 protected void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
 Channel ch = ctx.channel();
 
 // 这里是第一次使用http连接成功的时候
 if (!handshaker.isHandshakeComplete()) {
 handshaker.finishHandshake(ch, (FullHttpResponse) msg);
 System.out.println("WebSocket Client connected!");
 handshakeFuture.setSuccess();
 return;
 }
 
 // 这里是第一次使用http连接失败的时候
 if (msg instanceof FullHttpResponse) {
 FullHttpResponse response = (FullHttpResponse) msg;
 throw new IllegalStateException(
 "Unexpected FullHttpResponse (getStatus=" + response.getStatus() + ", content=" + response.content()
 .toString(CharsetUtil.UTF_8) + ')');
 }
 
 // 这里是服务器与客户端进行通讯的
 WebSocketFrame frame = (WebSocketFrame) msg;
 if (frame instanceof TextWebSocketFrame) {
 TextWebSocketFrame textFrame = (TextWebSocketFrame) frame;
 System.out.println("客户端：接收到TextWebSocketFrame消息，消息内容是-- " + textFrame.text());
 } else if (frame instanceof BinaryWebSocketFrame) {
 System.out.println("客户端：接收到BinaryWebSocketFrame消息，消息内容是-- ");
 ByteBuf content = frame.content();
 byte[] result = new byte[content.readableBytes()];
 content.readBytes(result);
 for (byte b : result) {
 System.out.print(b);
 System.out.print(",");
 }
 System.out.println();
 } else if (frame instanceof PongWebSocketFrame) {
 System.out.println("WebSocket Client received pong");
 } else if (frame instanceof CloseWebSocketFrame) {
 System.out.println("WebSocket Client received closing");
 ch.close();
 }
 
 }
 
 @Override
 public void exceptionCaught(ChannelHandlerContext ctx, Throwable arg1) {
 System.out.println("异常发生");
 arg1.printStackTrace();
 }
 
 @Override
 public void channelInactive(ChannelHandlerContext ctx) throws Exception {
 System.out.println("客户端连接断开");
 super.channelInactive(ctx);
 }
 }

## 测试类 ##

### EasyWsTest ###

/* * Copyright (C), 2015-2018 * FileName: EasyWsTest * Author: zhao * Date: 2018/8/14 11:08 * Description: EasyWs的测试类 * History: * <author> <time> <version> <desc> * 作者姓名 修改时间 版本号 描述 */
 package com.lizhaoblog.demopro.websocket;
 
 import com.lizhaoblog.demopro.websocket.client.EasyWsClient;
 import com.lizhaoblog.demopro.websocket.server.EasyWsServer;
 
 import org.junit.Test;
 
 /** * 〈一句话功能简述〉 * 〈EasyWs的测试类〉 * * @author zhao * @date 2018/8/14 11:08 * @since 1.0.1 */
 public class EasyWsTest { 
 
 private static final String IP = "127.0.0.1";
 private static final int PORT = 8088;
 
 @Test
 public void startServer() throws Exception {
 EasyWsServer easyWsServer = new EasyWsServer(PORT);
 easyWsServer.start();
 }
 
 @Test
 public void startClient() throws Exception {
 EasyWsClient easyWsClient = new EasyWsClient(IP, PORT);
 easyWsClient.run();
 }
 }

## 测试 ##

1.  打开EasyWsTest，运行startServer
2.  打开EasyWsTest，运行startClient
3.  查看结果  
    
    
     *  服务端：连接建立–服务器收到http握手消息–服务器收到消息(文本)–服务器收到字节消息
     *  服务端

Connected to the target VM, address: '127.0.0.1:3215', transport: 'socket'
 2018-08-14 11:55:39.087 DEBUG io.netty.util.internal.logging.InternalLoggerFactory - Using SLF4J as the default logging framework
 2018-08-14 11:55:39.099 DEBUG io.netty.channel.MultithreadEventLoopGroup - -Dio.netty.eventLoopThreads: 16
 2018-08-14 11:55:39.122 DEBUG io.netty.util.internal.PlatformDependent0 - java.nio.Buffer.address: available
 2018-08-14 11:55:39.123 DEBUG io.netty.util.internal.PlatformDependent0 - sun.misc.Unsafe.theUnsafe: available
 2018-08-14 11:55:39.123 DEBUG io.netty.util.internal.PlatformDependent0 - sun.misc.Unsafe.copyMemory: available
 2018-08-14 11:55:39.124 DEBUG io.netty.util.internal.PlatformDependent0 - direct buffer constructor: available
 2018-08-14 11:55:39.125 DEBUG io.netty.util.internal.PlatformDependent0 - java.nio.Bits.unaligned: available, true
 2018-08-14 11:55:39.125 DEBUG io.netty.util.internal.PlatformDependent0 - java.nio.DirectByteBuffer.<init>(long, int): available
 2018-08-14 11:55:39.126 DEBUG io.netty.util.internal.Cleaner0 - java.nio.ByteBuffer.cleaner(): available
 2018-08-14 11:55:39.126 DEBUG io.netty.util.internal.PlatformDependent - Platform: Windows
 2018-08-14 11:55:39.127 DEBUG io.netty.util.internal.PlatformDependent - Java version: 8
 2018-08-14 11:55:39.127 DEBUG io.netty.util.internal.PlatformDependent - -Dio.netty.noUnsafe: false
 2018-08-14 11:55:39.127 DEBUG io.netty.util.internal.PlatformDependent - sun.misc.Unsafe: available
 2018-08-14 11:55:39.127 DEBUG io.netty.util.internal.PlatformDependent - -Dio.netty.noJavassist: false
 2018-08-14 11:55:39.128 DEBUG io.netty.util.internal.PlatformDependent - Javassist: unavailable
 2018-08-14 11:55:39.128 DEBUG io.netty.util.internal.PlatformDependent - You don't have Javassist in your class path or you don't have enough permission to load dynamically generated classes. Please check the configuration for better performance.
 2018-08-14 11:55:39.129 DEBUG io.netty.util.internal.PlatformDependent - -Dio.netty.tmpdir: C:\Users\ADMINI~1\AppData\Local\Temp (java.io.tmpdir)
 2018-08-14 11:55:39.129 DEBUG io.netty.util.internal.PlatformDependent - -Dio.netty.bitMode: 64 (sun.arch.data.model)
 2018-08-14 11:55:39.129 DEBUG io.netty.util.internal.PlatformDependent - -Dio.netty.noPreferDirect: false
 2018-08-14 11:55:39.129 DEBUG io.netty.util.internal.PlatformDependent - io.netty.maxDirectMemory: 3806855168 bytes
 2018-08-14 11:55:39.183 DEBUG io.netty.channel.nio.NioEventLoop - -Dio.netty.noKeySetOptimization: false
 2018-08-14 11:55:39.184 DEBUG io.netty.channel.nio.NioEventLoop - -Dio.netty.selectorAutoRebuildThreshold: 512
 2018-08-14 11:55:39.186 DEBUG io.netty.util.internal.PlatformDependent - org.jctools-core.MpscChunkedArrayQueue: available
 2018-08-14 11:55:39.380 DEBUG io.netty.channel.DefaultChannelId - -Dio.netty.processId: 6492 (auto-detected)
 2018-08-14 11:55:39.382 DEBUG io.netty.util.NetUtil - -Djava.net.preferIPv4Stack: false
 2018-08-14 11:55:39.383 DEBUG io.netty.util.NetUtil - -Djava.net.preferIPv6Addresses: false
 2018-08-14 11:55:39.411 DEBUG io.netty.util.NetUtil - Loopback interface: lo (Software Loopback Interface 1, 127.0.0.1)
 2018-08-14 11:55:39.412 DEBUG io.netty.util.NetUtil - \proc\sys\net\core\somaxconn: 200 (non-existent)
 2018-08-14 11:55:39.444 DEBUG io.netty.channel.DefaultChannelId - -Dio.netty.machineId: 94:de:80:ff:fe:78:f9:54 (auto-detected)
 2018-08-14 11:55:39.447 DEBUG io.netty.util.internal.ThreadLocalRandom - -Dio.netty.initialSeedUniquifier: 0x912cf1a5dfc99b85
 2018-08-14 11:55:39.466 DEBUG io.netty.util.ResourceLeakDetector - -Dio.netty.leakDetection.level: simple
 2018-08-14 11:55:39.467 DEBUG io.netty.util.ResourceLeakDetector - -Dio.netty.leakDetection.maxRecords: 4
 2018-08-14 11:55:39.497 DEBUG io.netty.buffer.PooledByteBufAllocator - -Dio.netty.allocator.numHeapArenas: 16
 2018-08-14 11:55:39.497 DEBUG io.netty.buffer.PooledByteBufAllocator - -Dio.netty.allocator.numDirectArenas: 16
 2018-08-14 11:55:39.498 DEBUG io.netty.buffer.PooledByteBufAllocator - -Dio.netty.allocator.pageSize: 8192
 2018-08-14 11:55:39.498 DEBUG io.netty.buffer.PooledByteBufAllocator - -Dio.netty.allocator.maxOrder: 11
 2018-08-14 11:55:39.498 DEBUG io.netty.buffer.PooledByteBufAllocator - -Dio.netty.allocator.chunkSize: 16777216
 2018-08-14 11:55:39.498 DEBUG io.netty.buffer.PooledByteBufAllocator - -Dio.netty.allocator.tinyCacheSize: 512
 2018-08-14 11:55:39.498 DEBUG io.netty.buffer.PooledByteBufAllocator - -Dio.netty.allocator.smallCacheSize: 256
 2018-08-14 11:55:39.498 DEBUG io.netty.buffer.PooledByteBufAllocator - -Dio.netty.allocator.normalCacheSize: 64
 2018-08-14 11:55:39.498 DEBUG io.netty.buffer.PooledByteBufAllocator - -Dio.netty.allocator.maxCachedBufferCapacity: 32768
 2018-08-14 11:55:39.498 DEBUG io.netty.buffer.PooledByteBufAllocator - -Dio.netty.allocator.cacheTrimInterval: 8192
 2018-08-14 11:55:39.512 DEBUG io.netty.buffer.ByteBufUtil - -Dio.netty.allocator.type: pooled
 2018-08-14 11:55:39.513 DEBUG io.netty.buffer.ByteBufUtil - -Dio.netty.threadLocalDirectBufferSize: 65536
 2018-08-14 11:55:39.513 DEBUG io.netty.buffer.ByteBufUtil - -Dio.netty.maxThreadLocalCharBufferSize: 16384
 2018-08-14 11:55:42.719 DEBUG io.netty.buffer.AbstractByteBuf - -Dio.netty.buffer.bytebuf.checkAccessible: true
 2018-08-14 11:55:42.724 DEBUG io.netty.util.ResourceLeakDetectorFactory - Loaded default ResourceLeakDetector: io.netty.util.ResourceLeakDetector@42e2b085
 服务器：连接建立
 2018-08-14 11:55:42.788 DEBUG io.netty.util.Recycler - -Dio.netty.recycler.maxCapacityPerThread: 32768
 2018-08-14 11:55:42.788 DEBUG io.netty.util.Recycler - -Dio.netty.recycler.maxSharedCapacityFactor: 2
 2018-08-14 11:55:42.788 DEBUG io.netty.util.Recycler - -Dio.netty.recycler.linkCapacity: 16
 2018-08-14 11:55:42.788 DEBUG io.netty.util.Recycler - -Dio.netty.recycler.ratio: 8
 2018-08-14 11:55:42.836 DEBUG io.netty.handler.codec.http.websocketx.WebSocketServerHandshaker - [id: 0x08778b2d, L:/127.0.0.1:8088 - R:/127.0.0.1:3327] WebSocket version V13 server handshake
 2018-08-14 11:55:42.842 DEBUG io.netty.handler.codec.http.websocketx.WebSocketServerHandshaker - WebSocket version 13 server handshake key: YR/wvrnrJz9kEkn6LSuFug==, response: 6XulC19MJ2P54cdvYMhyy/OHqNU=
 2018-08-14 11:55:42.871 DEBUG io.netty.handler.codec.http.websocketx.WebSocket08FrameDecoder - Decoding WebSocket Frame opCode=1
 2018-08-14 11:55:42.871 DEBUG io.netty.handler.codec.http.websocketx.WebSocket08FrameDecoder - Decoding WebSocket Frame length=5
 服务器：接收到你的TextWebSocketFrame消息，内容是 hello
 2018-08-14 11:55:42.873 DEBUG io.netty.handler.codec.http.websocketx.WebSocket08FrameEncoder - Encoding WebSocket Frame opCode=1 length=33
 2018-08-14 11:55:42.874 DEBUG io.netty.handler.codec.http.websocketx.WebSocket08FrameDecoder - Decoding WebSocket Frame opCode=2
 2018-08-14 11:55:42.874 DEBUG io.netty.handler.codec.http.websocketx.WebSocket08FrameDecoder - Decoding WebSocket Frame length=9
 服务器：接收到你的BinaryWebSocketFrame消息，内容是 
 1,2,3,4,5,6,7,8,9,
 2018-08-14 11:55:42.879 DEBUG io.netty.handler.codec.http.websocketx.WebSocket08FrameEncoder - Encoding WebSocket Frame opCode=2 length=9
 Disconnected from the target VM, address: '127.0.0.1:3215', transport: 'socket'
 
 Process finished with exit code -1

- 客户端

2018-08-14 11:55:42.240 DEBUG io.netty.util.internal.logging.InternalLoggerFactory - Using SLF4J as the default logging framework
 2018-08-14 11:55:42.246 DEBUG io.netty.channel.MultithreadEventLoopGroup - -Dio.netty.eventLoopThreads: 16
 2018-08-14 11:55:42.271 DEBUG io.netty.util.internal.PlatformDependent0 - java.nio.Buffer.address: available
 2018-08-14 11:55:42.272 DEBUG io.netty.util.internal.PlatformDependent0 - sun.misc.Unsafe.theUnsafe: available
 2018-08-14 11:55:42.272 DEBUG io.netty.util.internal.PlatformDependent0 - sun.misc.Unsafe.copyMemory: available
 2018-08-14 11:55:42.273 DEBUG io.netty.util.internal.PlatformDependent0 - direct buffer constructor: available
 2018-08-14 11:55:42.274 DEBUG io.netty.util.internal.PlatformDependent0 - java.nio.Bits.unaligned: available, true
 2018-08-14 11:55:42.274 DEBUG io.netty.util.internal.PlatformDependent0 - java.nio.DirectByteBuffer.<init>(long, int): available
 2018-08-14 11:55:42.275 DEBUG io.netty.util.internal.Cleaner0 - java.nio.ByteBuffer.cleaner(): available
 2018-08-14 11:55:42.276 DEBUG io.netty.util.internal.PlatformDependent - Platform: Windows
 2018-08-14 11:55:42.277 DEBUG io.netty.util.internal.PlatformDependent - Java version: 8
 2018-08-14 11:55:42.277 DEBUG io.netty.util.internal.PlatformDependent - -Dio.netty.noUnsafe: false
 2018-08-14 11:55:42.277 DEBUG io.netty.util.internal.PlatformDependent - sun.misc.Unsafe: available
 2018-08-14 11:55:42.277 DEBUG io.netty.util.internal.PlatformDependent - -Dio.netty.noJavassist: false
 2018-08-14 11:55:42.278 DEBUG io.netty.util.internal.PlatformDependent - Javassist: unavailable
 2018-08-14 11:55:42.279 DEBUG io.netty.util.internal.PlatformDependent - You don't have Javassist in your class path or you don't have enough permission to load dynamically generated classes. Please check the configuration for better performance.
 2018-08-14 11:55:42.279 DEBUG io.netty.util.internal.PlatformDependent - -Dio.netty.tmpdir: C:\Users\ADMINI~1\AppData\Local\Temp (java.io.tmpdir)
 2018-08-14 11:55:42.279 DEBUG io.netty.util.internal.PlatformDependent - -Dio.netty.bitMode: 64 (sun.arch.data.model)
 2018-08-14 11:55:42.282 DEBUG io.netty.util.internal.PlatformDependent - -Dio.netty.noPreferDirect: false
 2018-08-14 11:55:42.282 DEBUG io.netty.util.internal.PlatformDependent - io.netty.maxDirectMemory: 3806855168 bytes
 2018-08-14 11:55:42.301 DEBUG io.netty.channel.nio.NioEventLoop - -Dio.netty.noKeySetOptimization: false
 2018-08-14 11:55:42.301 DEBUG io.netty.channel.nio.NioEventLoop - -Dio.netty.selectorAutoRebuildThreshold: 512
 2018-08-14 11:55:42.303 DEBUG io.netty.util.internal.PlatformDependent - org.jctools-core.MpscChunkedArrayQueue: available
 2018-08-14 11:55:42.488 DEBUG io.netty.channel.DefaultChannelId - -Dio.netty.processId: 18412 (auto-detected)
 2018-08-14 11:55:42.490 DEBUG io.netty.util.NetUtil - -Djava.net.preferIPv4Stack: false
 2018-08-14 11:55:42.491 DEBUG io.netty.util.NetUtil - -Djava.net.preferIPv6Addresses: false
 2018-08-14 11:55:42.516 DEBUG io.netty.util.NetUtil - Loopback interface: lo (Software Loopback Interface 1, 127.0.0.1)
 2018-08-14 11:55:42.518 DEBUG io.netty.util.NetUtil - \proc\sys\net\core\somaxconn: 200 (non-existent)
 2018-08-14 11:55:42.545 DEBUG io.netty.channel.DefaultChannelId - -Dio.netty.machineId: 94:de:80:ff:fe:78:f9:54 (auto-detected)
 2018-08-14 11:55:42.546 DEBUG io.netty.util.internal.ThreadLocalRandom - -Dio.netty.initialSeedUniquifier: 0x30542ca8d536a1bd
 2018-08-14 11:55:42.561 DEBUG io.netty.util.ResourceLeakDetector - -Dio.netty.leakDetection.level: simple
 2018-08-14 11:55:42.561 DEBUG io.netty.util.ResourceLeakDetector - -Dio.netty.leakDetection.maxRecords: 4
 2018-08-14 11:55:42.590 DEBUG io.netty.buffer.PooledByteBufAllocator - -Dio.netty.allocator.numHeapArenas: 16
 2018-08-14 11:55:42.591 DEBUG io.netty.buffer.PooledByteBufAllocator - -Dio.netty.allocator.numDirectArenas: 16
 2018-08-14 11:55:42.591 DEBUG io.netty.buffer.PooledByteBufAllocator - -Dio.netty.allocator.pageSize: 8192
 2018-08-14 11:55:42.591 DEBUG io.netty.buffer.PooledByteBufAllocator - -Dio.netty.allocator.maxOrder: 11
 2018-08-14 11:55:42.591 DEBUG io.netty.buffer.PooledByteBufAllocator - -Dio.netty.allocator.chunkSize: 16777216
 2018-08-14 11:55:42.591 DEBUG io.netty.buffer.PooledByteBufAllocator - -Dio.netty.allocator.tinyCacheSize: 512
 2018-08-14 11:55:42.591 DEBUG io.netty.buffer.PooledByteBufAllocator - -Dio.netty.allocator.smallCacheSize: 256
 2018-08-14 11:55:42.592 DEBUG io.netty.buffer.PooledByteBufAllocator - -Dio.netty.allocator.normalCacheSize: 64
 2018-08-14 11:55:42.592 DEBUG io.netty.buffer.PooledByteBufAllocator - -Dio.netty.allocator.maxCachedBufferCapacity: 32768
 2018-08-14 11:55:42.592 DEBUG io.netty.buffer.PooledByteBufAllocator - -Dio.netty.allocator.cacheTrimInterval: 8192
 2018-08-14 11:55:42.606 DEBUG io.netty.buffer.ByteBufUtil - -Dio.netty.allocator.type: pooled
 2018-08-14 11:55:42.606 DEBUG io.netty.buffer.ByteBufUtil - -Dio.netty.threadLocalDirectBufferSize: 65536
 2018-08-14 11:55:42.606 DEBUG io.netty.buffer.ByteBufUtil - -Dio.netty.maxThreadLocalCharBufferSize: 16384
 2018-08-14 11:55:42.645 DEBUG io.netty.buffer.AbstractByteBuf - -Dio.netty.buffer.bytebuf.checkAccessible: true
 2018-08-14 11:55:42.648 DEBUG io.netty.util.ResourceLeakDetectorFactory - Loaded default ResourceLeakDetector: io.netty.util.ResourceLeakDetector@3724974
 客户端连接建立
 2018-08-14 11:55:42.681 DEBUG io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker13 - WebSocket version 13 client handshake key: YR/wvrnrJz9kEkn6LSuFug==, expected response: 6XulC19MJ2P54cdvYMhyy/OHqNU=
 2018-08-14 11:55:42.690 DEBUG io.netty.util.Recycler - -Dio.netty.recycler.maxCapacityPerThread: 32768
 2018-08-14 11:55:42.690 DEBUG io.netty.util.Recycler - -Dio.netty.recycler.maxSharedCapacityFactor: 2
 2018-08-14 11:55:42.690 DEBUG io.netty.util.Recycler - -Dio.netty.recycler.linkCapacity: 16
 2018-08-14 11:55:42.690 DEBUG io.netty.util.Recycler - -Dio.netty.recycler.ratio: 8
 WebSocket Client connected!
 2018-08-14 11:55:42.869 DEBUG io.netty.handler.codec.http.websocketx.WebSocket08FrameEncoder - Encoding WebSocket Frame opCode=1 length=5
 2018-08-14 11:55:42.872 DEBUG io.netty.handler.codec.http.websocketx.WebSocket08FrameEncoder - Encoding WebSocket Frame opCode=2 length=9
 2018-08-14 11:55:42.875 DEBUG io.netty.handler.codec.http.websocketx.WebSocket08FrameDecoder - Decoding WebSocket Frame opCode=1
 2018-08-14 11:55:42.875 DEBUG io.netty.handler.codec.http.websocketx.WebSocket08FrameDecoder - Decoding WebSocket Frame length=33
 客户端：接收到TextWebSocketFrame消息，消息内容是-- 我是服务器，我是服务器
 2018-08-14 11:55:42.879 DEBUG io.netty.handler.codec.http.websocketx.WebSocket08FrameDecoder - Decoding WebSocket Frame opCode=2
 2018-08-14 11:55:42.880 DEBUG io.netty.handler.codec.http.websocketx.WebSocket08FrameDecoder - Decoding WebSocket Frame length=9
 客户端：接收到BinaryWebSocketFrame消息，消息内容是-- 
 1,2,3,4,5,6,7,8,9,

上面的代码在码云上 [https://gitee.com/lizhaoandroid/JgServer][https_gitee.com_lizhaoandroid_JgServer]  
的test下的com.lizhaoblog.demopro.websocket包目录下，可以下载查看

[https_gitee.com_lizhaoandroid_JgServer]: https://gitee.com/lizhaoandroid/JgServer