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/*
	ConnectBot: simple, powerful, open-source SSH client for Android
	Copyright (C) 2007-2008 Kenny Root, Jeffrey Sharkey
	
	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any dater version.
	
	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.
	
	You should have received a copy of the GNU General Public License
	along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
package com.trilead.ssh2;

import java.io.IOException;
import java.net.InetSocketAddress;

import com.trilead.ssh2.channel.ChannelManager;
import com.trilead.ssh2.channel.DynamicAcceptThread;

/**
 * A <code>DynamicPortForwarder</code> forwards TCP/IP connections to a local
 * port via the secure tunnel to another host which is selected via the
 * SOCKS protocol. Checkout {@link Connection#createDynamicPortForwarder(int)}
 * on how to create one.
 * 
 * @author Kenny Root
 * @version $Id: $
 */
public class DynamicPortForwarder {
	ChannelManager cm;

	DynamicAcceptThread dat;

	DynamicPortForwarder(ChannelManager cm, int local_port)
			throws IOException
	{
		this.cm = cm;

		dat = new DynamicAcceptThread(cm, local_port);
		dat.setDaemon(true);
		dat.start();
	}
	
	DynamicPortForwarder(ChannelManager cm, InetSocketAddress addr) throws IOException {
		this.cm = cm;

		dat = new DynamicAcceptThread(cm, addr);
		dat.setDaemon(true);
		dat.start();
	}

	/**
	 * Stop TCP/IP forwarding of newly arriving connections.
	 * 
	 * @throws IOException
	 */
	public void close() throws IOException
	{
		dat.stopWorking();
	}
}