/*
* Copyright 2010-2012 sshj contributors
*
* Licensed 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 examples;
import net.schmizz.sshj.SSHClient;
import net.schmizz.sshj.connection.channel.direct.LocalPortForwarder;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
/**
* This example demonstrates local port forwarding, i.e. when we listen on a particular address and port; and forward
* all incoming connections to SSH server which further forwards them to a specified address and port.
*/
public class LocalPF {
public static void main(String... args)
throws IOException {
SSHClient ssh = new SSHClient();
ssh.loadKnownHosts();
ssh.connect("localhost");
try {
ssh.authPublickey(System.getProperty("user.name"));
/*
* _We_ listen on localhost:8080 and forward all connections on to server, which then forwards it to
* google.com:80
*/
final LocalPortForwarder.Parameters params
= new LocalPortForwarder.Parameters("0.0.0.0", 8080, "google.com", 80);
final ServerSocket ss = new ServerSocket();
ss.setReuseAddress(true);
ss.bind(new InetSocketAddress(params.getLocalHost(), params.getLocalPort()));
try {
ssh.newLocalPortForwarder(params, ss).listen();
} finally {
ss.close();
}
} finally {
ssh.disconnect();
}
}
}