package com.sinata.zuul.util.echo;
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import io.netty.bootstrap.ServerBootstrap;
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import io.netty.channel.ChannelFuture;
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import io.netty.channel.ChannelOption;
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import io.netty.channel.ChannelPipeline;
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import io.netty.channel.EventLoopGroup;
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import io.netty.channel.nio.NioEventLoopGroup;
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import io.netty.channel.socket.SocketChannel;
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import io.netty.channel.socket.nio.NioServerSocketChannel;
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import io.netty.handler.codec.LengthFieldBasedFrameDecoder;
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import io.netty.handler.codec.LengthFieldPrepender;
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import io.netty.handler.timeout.IdleStateHandler;
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import java.util.Timer;
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import java.util.TimerTask;
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import java.util.concurrent.TimeUnit;
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/**
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* 即时通讯服务启动类
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*
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* @date 2016年6月25日
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* @version 1.0
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*/
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public class NettyServer {
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/**
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* NettyServer启动方法.
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*/
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public void bind() {
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final Thread thread = new Thread(new NettyRunnable());
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Timer timer = new Timer();
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timer.schedule(new TimerTask() {
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@Override
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public void run() {
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thread.start();
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}
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}, 10000);
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}
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/**
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* 即时通讯服务启动
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*
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* @date 2016年6月24日
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* @version 1.0
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*/
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public class NettyRunnable implements Runnable {
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/**
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* 获取即时通讯启动端口
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*/
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private Integer nettyPort = 9999;
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@Override
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public void run() {
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EventLoopGroup bossGroup = new NioEventLoopGroup();
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EventLoopGroup workerGroup = new NioEventLoopGroup();
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try {
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ServerBootstrap bootstrap = new ServerBootstrap();
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bootstrap.group(bossGroup, workerGroup);
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bootstrap.channel(NioServerSocketChannel.class);
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bootstrap.option(ChannelOption.SO_BACKLOG, 1024);
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// 通过TCP_NODELAY禁用NAGLE,使消息立即发出去，不用等待到一定的数据量才发出去
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bootstrap.option(ChannelOption.TCP_NODELAY, true);
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// 保持长连接状态
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bootstrap.childOption(ChannelOption.SO_KEEPALIVE, true);
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bootstrap.childHandler(new ServerInit() {
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@Override
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protected void initChannel(SocketChannel socketChannel) throws Exception {
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ChannelPipeline pipeline = socketChannel.pipeline();
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pipeline.addLast("ping", new IdleStateHandler(120, 60, 5, TimeUnit.SECONDS));
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pipeline.addLast("decoder", new LengthFieldBasedFrameDecoder(Integer.MAX_VALUE, 0, 4, 0, 4));
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pipeline.addLast("encoder", new LengthFieldPrepender(4));
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//pipeline.addLast(new LineBasedFrameDecoder(1048576 * 10));
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//pipeline.addLast(new StringDecoder(Charset.forName("UTF-8")));
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//pipeline.addLast(new StringEncoder(Charset.forName("UTF-8")));
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pipeline.addLast(new DiscardServerHandler());
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}
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});
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// 服务器绑定端口监听
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ChannelFuture f = bootstrap.bind(nettyPort).sync();
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if(f.isSuccess()) {
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System.out.println("******************************Netty启动成功******************************");
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}
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// 监听服务器关闭监听
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f.channel().closeFuture().sync();
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} catch (Exception e) {
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e.printStackTrace();
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} finally {
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bossGroup.shutdownGracefully();
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workerGroup.shutdownGracefully();
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}
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}
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}
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}
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