content: /*
   * Copyright (c) 2001-2004 Caucho Technology, Inc.  All rights reserved.
   *
   * The Apache Software License, Version 1.1
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution, if
   *    any, must include the following acknowlegement:
   *       "This product includes software developed by the
   *        Caucho Technology (http://www.caucho.com/)."
   *    Alternately, this acknowlegement may appear in the software itself,
   *    if and wherever such third-party acknowlegements normally appear.
   *
   * 4. The names "Burlap", "Resin", and "Caucho" must not be used to
   *    endorse or promote products derived from this software without prior
   *    written permission. For written permission, please contact
   *    info@caucho.com.
   *
   * 5. Products derived from this software may not be called "Resin"
   *    nor may "Resin" appear in their names without prior written
   *    permission of Caucho Technology.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL CAUCHO TECHNOLOGY OR ITS CONTRIBUTORS
   * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
   * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
   * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
   * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
   * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
   * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
   * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   * @author Scott Ferguson
   */
  
  package com.caucho.hessian.client;
  
  import java.io.FileNotFoundException;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  import java.net.HttpURLConnection;
  import java.net.URL;
  import java.net.URLConnection;
  
  /**
   * Internal connection to a server.  The default connection is based on
   * java.net
   */
  public class HessianURLConnection extends AbstractHessianConnection {
    private URL _url;
    private URLConnection _conn;
  
    private int _statusCode;
    private String _statusMessage;
  
    private InputStream _inputStream;
    private InputStream _errorStream;
  
    HessianURLConnection(URL url, URLConnection conn)
    {
      _url = url;
      _conn = conn;
    }
  
    /**
     * Adds a HTTP header.
     */
    @Override
    public void addHeader(String key, String value)
    {
      _conn.setRequestProperty(key, value);
    }
    
    /**
     * Returns the output stream for the request.
     */
    public OutputStream getOutputStream()
      throws IOException
    {
      return _conn.getOutputStream();
    }
  
    /**
     * Sends the request
     */
    public void sendRequest()
      throws IOException
    {
      if (_conn instanceof HttpURLConnection) {
        HttpURLConnection httpConn = (HttpURLConnection) _conn;
        
        _statusCode = 500;
  
        try {
          _statusCode = httpConn.getResponseCode();
        } catch (Exception e) {
        }
  
        parseResponseHeaders(httpConn);
  
        InputStream is = null;
  
        if (_statusCode != 200) {
          StringBuffer sb = new StringBuffer();
          int ch;
  
          try {
            is = httpConn.getInputStream();
  
            if (is != null) {
              while ((ch = is.read()) >= 0)
                sb.append((char) ch);
  
              is.close();
            }
  
            is = httpConn.getErrorStream();
            if (is != null) {
              while ((ch = is.read()) >= 0)
                sb.append((char) ch);
            }
  
            _statusMessage = sb.toString();
          } catch (FileNotFoundException e) {
            throw new HessianConnectionException("HessianProxy cannot connect to '" + _url, e);
          } catch (IOException e) {
            if (is == null)
              throw new HessianConnectionException(_statusCode + ": " + e, e);
            else
              throw new HessianConnectionException(_statusCode + ": " + sb, e);
          }
  
          if (is != null)
            is.close();
  
          throw new HessianConnectionException(_statusCode + ": " + sb.toString());
        }
      }
    }
  
    protected void parseResponseHeaders(HttpURLConnection conn)
      throws IOException
    {
    }
  
    /**
     * Returns the status code.
     */
    public int getStatusCode()
    {
      return _statusCode;
    }
  
    /**
     * Returns the status string.
     */
    public String getStatusMessage()
    {
      return _statusMessage;
    }
  
    /**
     * Returns the InputStream to the result
     */
    @Override
    public InputStream getInputStream()
      throws IOException
    {
      return _conn.getInputStream(); 
    }
    
    @Override
    public String getContentEncoding()
    {
      return _conn.getContentEncoding();
    }
  
    /**
     * Close/free the connection
     */
    @Override
    public void close()
    {
      _inputStream = null;
    }
  
    /**
     * Disconnect the connection
     */
    @Override
    public void destroy()
    {
      close();
      
      URLConnection conn = _conn;
      _conn = null;
      
      if (conn instanceof HttpURLConnection)
        ((HttpURLConnection) conn).disconnect();
    }
  }
  
  