/*
 * Copyright (c) 2010-2017 Nathan Rajlich
 *
 *  Permission is hereby granted, free of charge, to any person
 *  obtaining a copy of this software and associated documentation
 *  files (the "Software"), to deal in the Software without
 *  restriction, including without limitation the rights to use,
 *  copy, modify, merge, publish, distribute, sublicense, and/or sell
 *  copies of the Software, and to permit persons to whom the
 *  Software is furnished to do so, subject to the following
 *  conditions:
 *
 *  The above copyright notice and this permission notice shall be
 *  included in all copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 *  OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 *  HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 *  WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 *  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 *  OTHER DEALINGS IN THE SOFTWARE.
 */

package org.java_websocket.client;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.nio.ByteBuffer;
import java.nio.channels.ByteChannel;

import org.java_websocket.AbstractWrappedByteChannel;

public abstract class AbstractClientProxyChannel extends AbstractWrappedByteChannel {
	protected final ByteBuffer proxyHandshake;


	/**
	 * @param towrap
	 *            The channel to the proxy server
	 **/
	public AbstractClientProxyChannel( ByteChannel towrap ) {
		super( towrap );
		try {
			proxyHandshake = ByteBuffer.wrap( buildHandShake().getBytes( "ASCII" ) );
		} catch ( UnsupportedEncodingException e ) {
			throw new RuntimeException( e );
		}
	}

	@Override
	public int write( ByteBuffer src ) throws IOException {
		if( !proxyHandshake.hasRemaining() ) {
			return super.write( src );
		} else {
			return super.write( proxyHandshake );
		}
	}

	public abstract String buildHandShake();

}