/* * 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.impl.ExternalSeedReaderRequest; import com.aelitis.azureus.plugins.extseed.util.ExternalSeedHTTPDownloader; import com.aelitis.azureus.plugins.extseed.util.ExternalSeedHTTPDownloaderListener; public class ExternalSeedReaderWebSeed extends ExternalSeedReaderImpl { private URL url; private String ip; private int port; private String url_prefix; private boolean supports_503; protected ExternalSeedReaderWebSeed( ExternalSeedPlugin _plugin, Torrent _torrent, URL _url, Map _params ) { super( _plugin, _torrent, _params ); supports_503 = getBooleanParam( _params, "supports_503", true ); url = _url; ip = url.getHost(); 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 String getIP() { return( ip ); } 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 ExternalSeedHTTPDownloader( 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 )); } } }