/*
* Created on 16-Dec-2005
* Created by Paul Gardner
* Copyright (C) 2005, 2006 Aelitis, All Rights Reserved.
*
* 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 2
* of the License, or (at your option) any later 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* AELITIS, SAS au capital de 46,603.30 euros
* 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
*
*/
package com.aelitis.azureus.plugins.extseed.impl.webseed;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;
import java.util.Map;
import org.gudy.azureus2.core3.util.Debug;
import org.gudy.azureus2.plugins.torrent.Torrent;
import com.aelitis.azureus.plugins.extseed.ExternalSeedException;
import com.aelitis.azureus.plugins.extseed.ExternalSeedPlugin;
import com.aelitis.azureus.plugins.extseed.ExternalSeedReader;
import com.aelitis.azureus.plugins.extseed.impl.ExternalSeedReaderImpl;
import com.aelitis.azureus.plugins.extseed.util.ExternalSeedHTTPDownloader;
import com.aelitis.azureus.plugins.extseed.util.ExternalSeedHTTPDownloaderListener;
import com.aelitis.azureus.plugins.extseed.util.ExternalSeedHTTPDownloaderRange;
public class
ExternalSeedReaderWebSeed
extends ExternalSeedReaderImpl
{
private URL url;
private int port;
private String url_prefix;
private boolean supports_503;
protected
ExternalSeedReaderWebSeed(
ExternalSeedPlugin _plugin,
Torrent _torrent,
URL _url,
Map _params )
{
super( _plugin, _torrent, _url.getHost(), _params );
supports_503 = getBooleanParam( _params, "supports_503", true );
url = _url;
port = url.getPort();
if ( port == -1 ){
port = url.getDefaultPort();
}
try{
String hash_str = URLEncoder.encode(new String(_torrent.getHash(), "ISO-8859-1"), "ISO-8859-1").replaceAll("\\+", "%20");
url_prefix = url.toString()+"?info_hash=" + hash_str;
}catch( Throwable e ){
Debug.printStackTrace(e);
}
}
public boolean
sameAs(
ExternalSeedReader other )
{
if ( other instanceof ExternalSeedReaderWebSeed ){
return( url.toString().equals(((ExternalSeedReaderWebSeed)other).url.toString()));
}
return( false );
}
public String
getName()
{
return( "WS: " + url );
}
public URL
getURL()
{
return( url );
}
public int
getPort()
{
return( port );
}
protected int
getPieceGroupSize()
{
return( 1 );
}
protected boolean
getRequestCanSpanPieces()
{
return( false );
}
protected void
readData(
int piece_number,
int piece_offset,
int length,
ExternalSeedHTTPDownloaderListener listener )
throws ExternalSeedException
{
long piece_end = piece_offset + length - 1;
String str = url_prefix + "&piece=" + piece_number + "&ranges=" + piece_offset + "-" + piece_end;
setReconnectDelay( RECONNECT_DEFAULT, false );
ExternalSeedHTTPDownloader http_downloader = null;
try{
http_downloader = new ExternalSeedHTTPDownloaderRange( new URL( str ), getUserAgent());
// unfortunately using HttpURLConnection it isn't possible to read the 503 response as per
// protocol - however, for az http web seeds we don't uses 503 anyway so we cna use URLCon. The
// main benefit here is we also get http proxying which we don't get with our direct socket
// support...
if ( supports_503 ){
http_downloader.downloadSocket( length, listener, isTransient() );
}else{
http_downloader.download( length, listener, isTransient() );
}
}catch( ExternalSeedException ese ){
if ( http_downloader.getLastResponse() == 503 && http_downloader.getLast503RetrySecs() >= 0 ){
int retry_secs = http_downloader.getLast503RetrySecs();
setReconnectDelay( retry_secs * 1000, true );
throw( new ExternalSeedException( "Server temporarily unavailable, retrying in " + retry_secs + " seconds" ));
}else{
throw( ese );
}
}catch( MalformedURLException e ){
throw( new ExternalSeedException( "URL encode fails", e ));
}
}
}