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59 lines
2.0 KiB
Java
59 lines
2.0 KiB
Java
package cn.aofeng.demo.netty40x.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.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.apache.commons.lang.math.NumberUtils;
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import org.apache.log4j.Logger;
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/**
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* Echo服务端：将客户端发送的请求原样返回。
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*
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* @author <a href="mailto:aofengblog@163.com">聂勇</a>
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*/
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public class EchoServer {
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private static Logger _logger = Logger.getLogger(EchoServer.class);
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public void start(int port) {
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EventLoopGroup boss = new NioEventLoopGroup(1);
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EventLoopGroup worker = new NioEventLoopGroup(10);
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ServerBootstrap bootstrap = new ServerBootstrap();
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try {
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bootstrap.group(boss, worker)
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.channel(NioServerSocketChannel.class)
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.option(ChannelOption.SO_BACKLOG, 128)
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.childHandler(new EchoServerHandler())
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.localAddress(port);
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ChannelFuture bindFuture = bootstrap.bind().sync();
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ChannelFuture closeFuture = bindFuture.channel().closeFuture().sync();
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_logger.info( String.format("%s started and listen on %s", this.getClass().getSimpleName(), closeFuture ) );
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} catch(Exception ex) {
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_logger.info( String.format("%s start failed", this.getClass().getSimpleName()), ex);
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} finally {
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boss.shutdownGracefully();
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worker.shutdownGracefully();
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}
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}
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/**
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* @param args
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*/
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public static void main(String[] args) {
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if (args.length != 1) {
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_logger.error("Invalid arguments。Usage：java cn.aofeng.demo.netty40x.echo.EchoServer 8080");
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System.exit(-1);
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}
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int port = NumberUtils.toInt(args[0], 8080);
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EchoServer server = new EchoServer();
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server.start(port);
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}
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}
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