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/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2009 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 "CreateRequestCommand.h"
#include "InitiateConnectionCommandFactory.h"
#include "RequestGroup.h"
#include "Segment.h"
#include "DownloadContext.h"
#include "DlAbortEx.h"
#include "DownloadEngine.h"
#include "SocketCore.h"
#include "SegmentMan.h"
#include "prefs.h"
#include "Option.h"
#include "SleepCommand.h"
#include "Logger.h"
#include "util.h"
namespace aria2 {
CreateRequestCommand::CreateRequestCommand(cuid_t cuid,
RequestGroup* requestGroup,
DownloadEngine* e):
AbstractCommand
(cuid, SharedHandle<Request>(), SharedHandle<FileEntry>(), requestGroup, e)
{
setStatus(Command::STATUS_ONESHOT_REALTIME);
disableReadCheckSocket();
disableWriteCheckSocket();
}
bool CreateRequestCommand::executeInternal()
{
if(_segments.empty()) {
_fileEntry = _requestGroup->getDownloadContext()->findFileEntryByOffset(0);
} else {
// We assume all segments belongs to same file.
_fileEntry = _requestGroup->getDownloadContext()->findFileEntryByOffset
(_segments.front()->getPositionToWrite());
}
if(_fileEntry->getRemainingUris().empty() &&
getOption()->getAsBool(PREF_REUSE_URI) &&
_fileEntry->countPooledRequest() == 0) {
_fileEntry->reuseUri(_requestGroup->getNumConcurrentCommand());
}
req = _fileEntry->getRequest(_requestGroup->getURISelector(),
getOption()->get(PREF_REFERER),
// Don't use HEAD request when file
// size is known.
// Use HEAD for dry-run mode.
(_fileEntry->getLength() == 0 &&
getOption()->getAsBool(PREF_USE_HEAD)) ||
getOption()->getAsBool(PREF_DRY_RUN)?
Request::METHOD_HEAD:Request::METHOD_GET);
if(req.isNull()) {
if(!_requestGroup->getSegmentMan().isNull()) {
_requestGroup->getSegmentMan()->ignoreSegmentFor(_fileEntry);
}
throw DL_ABORT_EX("No URI available.");
}
Command* command =
InitiateConnectionCommandFactory::createInitiateConnectionCommand
(cuid, req, _fileEntry, _requestGroup, e);
e->setNoWait(true);
e->commands.push_back(command);
return true;
}
bool CreateRequestCommand::prepareForRetry(time_t wait)
{
// We assume that this method is called from AbstractCommand when
// Segment is not available. Normally,
// AbstractCommand::prepareForRetry() does the job, but it creates
// CreateRequestCommand and deletes current one. At the last stage
// of the download, commands are idle and prepareForRetry() is
// called repeatedly. This means that newly created
// CreateRequestCommand is deleted one second later: This is not
// efficient. For this reason, reuse current CreateRequestCommand.
if(!_requestGroup->getPieceStorage().isNull()) {
_requestGroup->getSegmentMan()->cancelSegment(cuid);
}
if(logger->debug()) {
logger->debug("CUID#%s - Reusing CreateRequestCommand",
util::itos(cuid).c_str());
}
SleepCommand* scom = new SleepCommand(cuid, e, _requestGroup, this, wait);
e->commands.push_back(scom);
return false;
}
} // namespace aria2
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