Java tutorial
/* * Copyright 2012 The Netty Project * * The Netty Project licenses this file to you under the Apache License, * version 2.0 (the "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. */ package com.gxkj.demo.netty.proxy; import com.gxkj.demo.netty.NettyConfig; import io.netty.bootstrap.ServerBootstrap; import io.netty.channel.ChannelOption; import io.netty.channel.EventLoopGroup; import io.netty.channel.nio.NioEventLoopGroup; import io.netty.channel.socket.nio.NioServerSocketChannel; public class HexDumpProxy { private final int localPort; private final String remoteHost; private final int remotePort; public HexDumpProxy(int localPort, String remoteHost, int remotePort) { this.localPort = localPort; this.remoteHost = remoteHost; this.remotePort = remotePort; } public void run() throws Exception { System.err.println("Proxying *:" + localPort + " to " + remoteHost + ':' + remotePort + " ..."); // Configure the bootstrap. EventLoopGroup bossGroup = new NioEventLoopGroup(); EventLoopGroup workerGroup = new NioEventLoopGroup(); try { ServerBootstrap b = new ServerBootstrap(); b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class) .childHandler(new HexDumpProxyInitializer(remoteHost, remotePort)) .childOption(ChannelOption.AUTO_READ, false).bind(localPort).sync().channel().closeFuture() .sync(); } finally { bossGroup.shutdownGracefully(); workerGroup.shutdownGracefully(); } } public static void main(String[] args) throws Exception { // Validate command line options. String remoteHost = NettyConfig.host; int localPort = NettyConfig.proxyPort; int remotePort = NettyConfig.port; new HexDumpProxy(localPort, remoteHost, remotePort).run(); } }