EchoServerWithFuture.java

package com.github.nettybook.ch5;

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.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;

public class EchoServerWithFuture {
    public static void main(String[] args) throws Exception {
        EventLoopGroup bossGroup = new NioEventLoopGroup(1);
        EventLoopGroup workerGroup = new NioEventLoopGroup();
        try {
            ServerBootstrap b = new ServerBootstrap();
            b.group(bossGroup, workerGroup)
             .channel(NioServerSocketChannel.class)
             .childHandler(new ChannelInitializer<SocketChannel>() {
                @Override
                public void initChannel(SocketChannel ch) {
                    ChannelPipeline p = ch.pipeline();
                    p.addLast(new EchoServerHandlerWithFuture());
                }
            });

            ChannelFuture bindFuture = b.bind(8888);
            System.out.println("Bind 시작.");
            bindFuture.sync();
            System.out.println("Bind 완료.");

            Channel serverChannel = bindFuture.channel();
            ChannelFuture closeFuture = serverChannel.closeFuture();
            closeFuture.sync();
        }
        finally {
            workerGroup.shutdownGracefully();
            bossGroup.shutdownGracefully();
        }
    }
}