PortForwardProxy.java

/*
 * Copyright (c) 2014 The APN-PROXY Project
 *
 * The APN-PROXY 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.xx_dev.apn.socks.local;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import org.apache.log4j.xml.DOMConfigurator;

import javax.xml.parsers.FactoryConfigurationError;
import java.io.File;
import java.net.MalformedURLException;

public final class PortForwardProxy {

    static {
        File log4jConfigFile = new File("conf/log4j.xml");
        if (log4jConfigFile.exists()) {
            try {
                DOMConfigurator.configure(log4jConfigFile.toURI().toURL());
            } catch (MalformedURLException e) {
                System.err.println(e);
            } catch (FactoryConfigurationError e) {
                System.err.println(e);
            }
        }
    }

    public static void main(String[] args) throws Exception {

        EventLoopGroup bossGroup = new NioEventLoopGroup(1);
        EventLoopGroup workerGroup = new NioEventLoopGroup();

        try {
            ServerBootstrap b = new ServerBootstrap();
            ChannelFuture bindFuture = b.group(bossGroup, workerGroup)
                                        .channel(NioServerSocketChannel.class)
                                        .childHandler(
                                                new PortForwardProxyFrontendInitializer(
                                                        LocalConfig.ins().getRemoteHost(),
                                                        LocalConfig.ins().getRemotePort()))
                                        .childOption(ChannelOption.AUTO_READ, false)
                                        .bind(LocalConfig.ins().getLocalPort());

            bindFuture.sync().channel().closeFuture().sync();
        } finally {
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        }

    }
}