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 * $Header: /home/cvs/jakarta-commons/httpclient/src/test/org/apache/commons/httpclient/server/TransparentProxyRequestHandler.java,v 2004/02/22 18:21:18 olegk Exp $
 * $Revision: $
 * $Date: 2004/02/22 18:21:18 $
 * ====================================================================
 *  Copyright 1999-2004 The Apache Software Foundation
 *  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.
 * ====================================================================
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * .
 * [Additional notices, if required by prior licensing conditions]

package org.apache.commons.httpclient.server;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.io.Writer;
import java.net.Socket;

import org.apache.commons.httpclient.Header;
import org.apache.commons.httpclient.HttpConstants;
import org.apache.commons.httpclient.HttpURL;
import org.apache.commons.httpclient.URI;

 * This request handler can handle the CONNECT method. It does
 * nothing for any other HTTP methods.
 * @author Ortwin Glueck
public class TransparentProxyRequestHandler implements HttpRequestHandler {

    /* (non-Javadoc)
     * @see org.apache.commons.httpclient.server.HttpRequestHandler#processRequest(org.apache.commons.httpclient.server.SimpleHttpServerConnection)
    public boolean processRequest(SimpleHttpServerConnection conn) throws IOException {
        RequestLine line = conn.getRequestLine();
        String method = line.getMethod();
        if (!"CONNECT".equalsIgnoreCase(method)) return false;
        URI url = new HttpURL(line.getUri());
        handshake(conn, url);
        return true;

    private void handshake(SimpleHttpServerConnection conn, URI url) throws IOException  {
        Socket targetSocket = new Socket(url.getHost(), url.getPort());
        InputStream sourceIn = conn.getInputStream();
        OutputStream sourceOut = conn.getOutputStream();
        InputStream targetIn = targetSocket.getInputStream();
        OutputStream targetOut = targetSocket.getOutputStream();

        ResponseWriter out = conn.getWriter();
        out.println("HTTP/1.1 200 Connection established");

        BidiStreamProxy bdsp = new BidiStreamProxy(sourceIn, sourceOut, targetIn, targetOut);
        try {
        } catch (InterruptedException e) {
            throw new IOException(e.toString());
    private void sendHeaders(Header[] headers, OutputStream os) throws IOException {
        Writer out;
        try {
            out = new OutputStreamWriter(os, HttpConstants.HTTP_ELEMENT_CHARSET);
        } catch (UnsupportedEncodingException e) {
            throw new RuntimeException(e.toString());
        for (int i=0; i

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