org.columbia.parikshan.proxy.NettyProxy.java Source code

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Here is the source code for org.columbia.parikshan.proxy.NettyProxy.java

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/*
 * 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 org.columbia.parikshan.proxy;

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;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;
import org.columbia.parikshan.Main;

public final class NettyProxy {

    public static void execute(int LOCAL_PORT, String REMOTE_HOST, int REMOTE_PORT) throws Exception {
        System.err.println("Proxying *:" + LOCAL_PORT + " to " + REMOTE_HOST + ':' + REMOTE_PORT + " ...");

        LoggingHandler l;
        if (Main.debug)
            l = new LoggingHandler(LogLevel.INFO);
        else
            l = new LoggingHandler(LogLevel.DEBUG);

        // Configure the bootstrap.
        EventLoopGroup bossGroup = new NioEventLoopGroup(1);
        EventLoopGroup workerGroup = new NioEventLoopGroup();
        try {
            ServerBootstrap b = new ServerBootstrap();
            b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class).handler(l)
                    .childHandler(new NettyProxyInitializer(REMOTE_HOST, REMOTE_PORT))
                    .childOption(ChannelOption.AUTO_READ, false).bind(LOCAL_PORT).sync().channel().closeFuture()
                    .sync();
        } finally {
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        }
    }
}