examples.ssh.RemotePF.java Source code

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Here is the source code for examples.ssh.RemotePF.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF 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 examples.ssh;

import java.net.InetSocketAddress;

import org.apache.commons.net.ssh.SSHClient;
import org.apache.commons.net.ssh.connection.SocketForwardingConnectListener;
import org.apache.commons.net.ssh.connection.RemotePortForwarder.Forward;

/**
 * This example demonstrates remote port forwarding i.e. when the remote host is made to listen on a specific address
 * and port; and forwards us incoming connections.
 */
public class RemotePF {

    // static
    // {
    // BasicConfigurator.configure(new ConsoleAppender(new PatternLayout("%d [%-15.15t] %-5p %-30.30c{1} - %m%n")));
    // }

    public static void main(String... args) throws Exception {
        SSHClient client = new SSHClient();
        client.loadKnownHosts();

        client.connect("localhost");
        try {

            client.authPublickey(System.getProperty("user.name"));

            /*
             * We make _server_ listen on port 8080, which forwards all connections to us as a channel, and we further
             * forward all such channels to google.com:80
             */
            client.getRemotePortForwarder().bind(new Forward(8080), //
                    new SocketForwardingConnectListener(new InetSocketAddress("google.com", 80)));

            // Something to hang on to so forwarding stays
            client.getTransport().join();

        } finally {
            client.disconnect();
        }
    }

}