io.netty.example.proxy.HexDumpProxy Maven / Gradle / Ivy
/*
* 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 io.netty.example.proxy;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelOption;
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.
ServerBootstrap b = new ServerBootstrap();
try {
b.group(new NioEventLoopGroup(), new NioEventLoopGroup())
.channel(NioServerSocketChannel.class)
.childHandler(new HexDumpProxyInitializer(remoteHost, remotePort))
.childOption(ChannelOption.AUTO_READ, false)
.bind(localPort).sync().channel().closeFuture().sync();
} finally {
b.shutdown();
}
}
public static void main(String[] args) throws Exception {
// Validate command line options.
if (args.length != 3) {
System.err.println(
"Usage: " + HexDumpProxy.class.getSimpleName() +
" ");
return;
}
// Parse command line options.
int localPort = Integer.parseInt(args[0]);
String remoteHost = args[1];
int remotePort = Integer.parseInt(args[2]);
new HexDumpProxy(localPort, remoteHost, remotePort).run();
}
}