EpollEchoServer.java

package com.github.nettybook.ch3;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.epoll.EpollEventLoopGroup;
import io.netty.channel.epoll.EpollServerSocketChannel;
import io.netty.channel.socket.SocketChannel;

/**
 * 리눅스 운영체제에서만 동작함.
 */
public class EpollEchoServer {
    public static void main(String[] args) throws Exception {
        EventLoopGroup bossGroup = new EpollEventLoopGroup(1);
        EventLoopGroup workerGroup = new EpollEventLoopGroup();
        try {
            ServerBootstrap b = new ServerBootstrap();
            b.group(bossGroup, workerGroup)
             .channel(EpollServerSocketChannel.class)
             .childHandler(new ChannelInitializer<SocketChannel>() {
                @Override
                public void initChannel(SocketChannel ch) {
                    ChannelPipeline p = ch.pipeline();
                    p.addLast(new EchoServerHandler());
                }
            });

            ChannelFuture f = b.bind(8888).sync();

            f.channel().closeFuture().sync();
        }
        finally {
            workerGroup.shutdownGracefully();
            bossGroup.shutdownGracefully();
        }
    }
}