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/* <!-- copyright */
/*
* aria2 - a simple utility for downloading files faster
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* copyright --> */
#include "AbstractCommand.h"
#include "DlAbortEx.h"
#include "DlRetryEx.h"
#include "InitiateConnectionCommandFactory.h"
#include <sys/time.h>
#include "Util.h"
#include "message.h"
#include "SleepCommand.h"
#define TIMEOUT_SEC 5
AbstractCommand::AbstractCommand(int cuid, Request* req, DownloadEngine* e, Socket* s):
Command(cuid), req(req), e(e), checkSocketIsReadable(false), checkSocketIsWritable(false) {
if(s != NULL) {
socket = new Socket(*s);
e->addSocketForReadCheck(socket);
} else {
socket = NULL;
}
this->checkPoint.tv_sec = 0;
this->checkPoint.tv_usec = 0;
}
AbstractCommand::~AbstractCommand() {
e->deleteSocketForReadCheck(socket);
e->deleteSocketForWriteCheck(socket);
if(socket != NULL) {
delete(socket);
}
}
void AbstractCommand::updateCheckPoint() {
gettimeofday(&checkPoint, NULL);
}
bool AbstractCommand::isTimeoutDetected() {
struct timeval now;
gettimeofday(&now, NULL);
if(checkPoint.tv_sec == 0 && checkPoint.tv_usec == 0) {
return false;
} else {
long long int elapsed = Util::difftv(now, checkPoint);
if(elapsed >= TIMEOUT_SEC*1000000) {
return true;
} else {
return false;
}
}
}
bool AbstractCommand::execute() {
try {
if(checkSocketIsReadable && !socket->isReadable(0)
|| checkSocketIsWritable && !socket->isWritable(0)) {
if(isTimeoutDetected()) {
throw new DlRetryEx(EX_TIME_OUT);
}
updateCheckPoint();
e->commands.push(this);
return false;
}
updateCheckPoint();
Segment seg = { 0, 0, 0, false };
if(e->segmentMan->downloadStarted) {
// get segment information in order to set Range header.
if(!e->segmentMan->getSegment(seg, cuid)) {
// no segment available
e->logger->info(MSG_NO_SEGMENT_AVAILABLE, cuid);
return true;
}
}
return executeInternal(seg);
} catch(DlAbortEx* err) {
e->logger->error(MSG_DOWNLOAD_ABORTED, err, cuid);
onError(err);
delete(err);
req->resetUrl();
return true;
} catch(DlRetryEx* err) {
e->logger->error(MSG_RESTARTING_DOWNLOAD, err, cuid);
onError(err);
delete(err);
//req->resetUrl();
req->addRetryCount();
if(req->noMoreRetry()) {
e->logger->error(MSG_MAX_RETRY, cuid);
return true;
} else {
return prepareForRetry(e->option->getAsInt("retry_wait"));
}
}
}
bool AbstractCommand::prepareForRetry(int wait) {
Command* command = InitiateConnectionCommandFactory::createInitiateConnectionCommand(cuid, req, e);
if(wait == 0) {
e->commands.push(command);
} else {
SleepCommand* scom = new SleepCommand(cuid, e, command, wait);
e->commands.push(scom);
}
return true;
}
void AbstractCommand::onError(Exception* e) {
}
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