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/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2006 Tatsuhiro Tsujikawa
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/* copyright --> */
#include "TrackerUpdateCommand.h"
#include "LogFactory.h"
#include "DlAbortEx.h"
#include "message.h"
#include "PeerInitiateConnectionCommand.h"
#include "SleepCommand.h"
#include "Util.h"
TrackerUpdateCommand::TrackerUpdateCommand(int cuid,
TorrentDownloadEngine* e,
const BtContextHandle& btContext):
BtContextAwareCommand(cuid, btContext), e(e)
{
logger = LogFactory::getInstance();
}
TrackerUpdateCommand::~TrackerUpdateCommand() {}
bool TrackerUpdateCommand::prepareForRetry() {
e->commands.push_back(this);
return false;
}
char* TrackerUpdateCommand::getTrackerResponse(size_t& trackerResponseLength) {
int maxBufLength = 2048;
char* buf = new char[maxBufLength];
int bufLength = 0;
char data[2048];
try {
while(1) {
int dataLength = e->segmentMan->diskWriter->readData(data, sizeof(data), bufLength);
if(bufLength+dataLength >= maxBufLength) {
maxBufLength = Util::expandBuffer(&buf, bufLength, bufLength+dataLength);
}
memcpy(buf+bufLength, data, dataLength);
bufLength += dataLength;
if(dataLength != sizeof(data)) {
break;
}
}
trackerResponseLength = bufLength;
return buf;
} catch(Exception* e) {
delete [] buf;
throw;
}
}
bool TrackerUpdateCommand::execute() {
if(btAnnounce->noMoreAnnounce()) {
return true;
}
if(!e->segmentMan->finished()) {
return prepareForRetry();
}
char* trackerResponse = 0;
size_t trackerResponseLength = 0;
try {
trackerResponse = getTrackerResponse(trackerResponseLength);
btAnnounce->processAnnounceResponse(trackerResponse,
trackerResponseLength);
while(!btRuntime->isHalt() && btRuntime->lessThanMinPeer()) {
PeerHandle peer = peerStorage->getUnusedPeer();
if(peer.isNull()) {
break;
}
int newCuid = btRuntime->getNewCuid();
peer->cuid = newCuid;
PeerInitiateConnectionCommand* command =
new PeerInitiateConnectionCommand(newCuid,
peer,
e,
btContext);
e->commands.push_back(command);
logger->debug("CUID#%d - Adding new command CUID#%d", cuid, newCuid);
}
btAnnounce->announceSuccess();
btAnnounce->resetAnnounce();
e->segmentMan->init();
} catch(Exception* err) {
logger->error("CUID#%d - Error occurred while processing tracker response.", cuid, err);
e->segmentMan->errors++;
delete err;
}
if(trackerResponse) {
delete [] trackerResponse;
}
return prepareForRetry();
}
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