package com.thhy.staff.modules.biz.netty;
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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.EventLoopGroup;
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import io.netty.channel.nio.NioEventLoopGroup;
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import io.netty.channel.socket.nio.NioServerSocketChannel;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.stereotype.Component;
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import javax.annotation.PostConstruct;
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import javax.annotation.PreDestroy;
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import java.net.InetSocketAddress;
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@Component
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public class NettyServer {
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private Logger logger = LoggerFactory.getLogger(NettyServer.class);
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/**
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* boss 线程组用于处理连接工作
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*/
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private EventLoopGroup boss = new NioEventLoopGroup();
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/**
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* work 线程组用于数据处理
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*/
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private EventLoopGroup work = new NioEventLoopGroup();
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@Value("netty.port")
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private Integer port;
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/**
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* 启动Netty Server
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*
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* @throws InterruptedException
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*/
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@PostConstruct
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public void start() throws InterruptedException {
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ServerBootstrap bootstrap = new ServerBootstrap();
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bootstrap.group(boss, work)
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// 指定Channel
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.channel(NioServerSocketChannel.class)
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//使用指定的端口设置套接字地址
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.localAddress(new InetSocketAddress(port))
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//服务端可连接队列数,对应TCP/IP协议listen函数中backlog参数
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.option(ChannelOption.SO_BACKLOG, 1024)
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//设置TCP长连接,一般如果两个小时内没有数据的通信时,TCP会自动发送一个活动探测数据报文
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.childOption(ChannelOption.SO_KEEPALIVE, true)
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//将小的数据包包装成更大的帧进行传送，提高网络的负载
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.childOption(ChannelOption.TCP_NODELAY, true)
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.childHandler(new ServerChannelInitializer());
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ChannelFuture future = bootstrap.bind().sync();
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if (future.isSuccess()) {
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logger.info("启动 Netty Server");
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}
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}
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@PreDestroy
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public void destory() throws InterruptedException {
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boss.shutdownGracefully().sync();
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work.shutdownGracefully().sync();
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logger.info("关闭Netty");
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}
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}
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