1、serverhandler
package server; import io.netty.channel.ChannelHandlerContext; import io.netty.channel.SimpleChannelInboundHandler; import lombok.extern.slf4j.Slf4j; /** * @author liupengr * @date 2020/2/16 11:25 */ @Slf4j public class PRCServerHandler extends SimpleChannelInboundHandler<String> { @Override protected void channelRead0(ChannelHandlerContext ctx, String s) throws Exception { log.info("server channle read"); log.info(ctx.channel().remoteAddress() + "to server: " + s); ctx.write("server wrrite " + s); ctx.flush(); } }
2、server
package server; import client.DemoClient; import io.netty.bootstrap.ServerBootstrap; import io.netty.channel.ChannelFuture; import io.netty.channel.ChannelInitializer; import io.netty.channel.ChannelOption; import io.netty.channel.EventLoopGroup; import io.netty.channel.nio.NioEventLoopGroup; import io.netty.channel.socket.SocketChannel; import io.netty.channel.socket.nio.NioServerSocketChannel; import io.netty.handler.codec.string.StringDecoder; import io.netty.handler.codec.string.StringEncoder; import lombok.extern.slf4j.Slf4j; import java.net.InetSocketAddress; /** * @author liupengr * @date 2020/2/16 11:30 */ @Slf4j public class RPCServer { private String ip; private int port; private int ioThreads; // 用来处理网络流的读写线程 private int workerThreads; // 用于业务处理的计算线程 public RPCServer(String ip, int port, int ioThreads, int workerThreads) { this.ip = ip; this.port = port; this.ioThreads = ioThreads; this.workerThreads = workerThreads; } public void start() { //bossGroup, 用于处理客户端的连接请求 EventLoopGroup bossGroup = new NioEventLoopGroup(ioThreads); // workerGroup, 用于处理与各个客户端连接的 IO 操作 EventLoopGroup workerGroup = new NioEventLoopGroup(workerThreads); try { ServerBootstrap bootstrap = new ServerBootstrap(); bootstrap.group(bossGroup, workerGroup) .channel(NioServerSocketChannel.class) .localAddress(new InetSocketAddress(port)) .childHandler(new ChannelInitializer<SocketChannel>() { @Override protected void initChannel(SocketChannel ch) throws Exception { ch.pipeline().addLast(new StringDecoder()); ch.pipeline().addLast(new StringEncoder()); ch.pipeline().addLast(new PRCServerHandler()); } }); bootstrap.option(ChannelOption.SO_BACKLOG, 100) // 客户端套件字接受队列大小 .option(ChannelOption.SO_REUSEADDR, true) // reuse addr,避免端口冲突 .option(ChannelOption.TCP_NODELAY, true) // 关闭小流合并,保证消息的及时性 .childOption(ChannelOption.SO_KEEPALIVE, true); // 长时间没动静的链接自动关闭 ChannelFuture future = bootstrap.bind(port).sync(); log.info("Server start listen at " + port); future.channel().closeFuture().sync(); } catch (InterruptedException e) { bossGroup.shutdownGracefully(); workerGroup.shutdownGracefully(); } /* bootstrap.bind(this.ip, this.port).addListener(future -> { if (future.isSuccess()) { log.info(" RPCserver startup success"); } else { log.error(" PRCserver startup failed", future.cause()); } });*/ } public static void main(String[] args) { RPCServer rpcServer = new RPCServer("127.0.0.1", 8090, 1, 1); rpcServer.start(); } }
3、clienthandler
package client; import io.netty.channel.ChannelHandlerContext; import io.netty.channel.SimpleChannelInboundHandler; import lombok.extern.slf4j.Slf4j; /** * @author liupengr * @date 2020/2/16 16:11 */ @Slf4j public class DemoClientHandler extends SimpleChannelInboundHandler<String>{ @Override protected void channelRead0(ChannelHandlerContext ctx, String s) throws Exception { log.info("demoClientHandler read msg:"+s); } }
4、client
package client; import io.netty.bootstrap.Bootstrap; import io.netty.bootstrap.ServerBootstrap; import io.netty.channel.*; import io.netty.channel.nio.NioEventLoopGroup; import io.netty.channel.socket.SocketChannel; import io.netty.channel.socket.nio.NioServerSocketChannel; import io.netty.channel.socket.nio.NioSocketChannel; import io.netty.handler.codec.string.StringDecoder; import io.netty.handler.codec.string.StringEncoder; import server.RPCServer; import static io.netty.handler.codec.http.HttpHeaders.Names.HOST; /** * @author liupengr * @date 2020/2/16 16:10 */ public class DemoClient { private String ip; private int port; private int workerThreads; // 用于业务处理的计算线程 public DemoClient(String ip, int port, int workerThreads) { this.ip = ip; this.port = port; this.workerThreads = workerThreads; } public void start() { EventLoopGroup workerGroup = new NioEventLoopGroup(workerThreads); try { Bootstrap bootstrap = new Bootstrap(); bootstrap.group(workerGroup).channel(NioSocketChannel.class).handler(new ChannelInitializer<SocketChannel>() { @Override public void initChannel(SocketChannel ch) throws Exception { ChannelPipeline p = ch.pipeline(); p.addLast(new StringDecoder()); p.addLast(new StringEncoder()); p.addLast(new DemoClientHandler()); } }); bootstrap.option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 5000) .option(ChannelOption.SO_KEEPALIVE, true); ChannelFuture future = bootstrap.connect(ip, port).sync(); future.channel().writeAndFlush("Hello Netty Server ,I am a common client"); future.channel().closeFuture().sync(); } catch (InterruptedException e) { workerGroup.shutdownGracefully(); } } public static void main(String[] args) { DemoClient client=new DemoClient("127.0.0.1",8090,1); client.start(); } }
加一张调用原型图: