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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 --> */
#ifndef _D_ABSTRACT_COMMAND_H_
#define _D_ABSTRACT_COMMAND_H_
#include "Command.h"
#include "Request.h"
#include "DownloadEngine.h"
#include "SegmentMan.h"
#include "TimeA2.h"
#include "RecoverableException.h"
class AbstractCommand : public Command {
private:
Time checkPoint;
int timeout;
protected:
RequestHandle req;
DownloadEngine* e;
SocketHandle socket;
SegmentHandle segment;
void tryReserved();
virtual bool prepareForRetry(int wait);
virtual void onAbort(RecoverableException* ex);
virtual bool executeInternal() = 0;
void setReadCheckSocket(const SocketHandle& socket);
void setWriteCheckSocket(const SocketHandle& socket);
void disableReadCheckSocket();
void disableWriteCheckSocket();
bool resolveHostname(const string& hostname, const NameResolverHandle& nameResolver);
#ifdef ENABLE_ASYNC_DNS
void setNameResolverCheck(const NameResolverHandle& resolver);
void disableNameResolverCheck(const NameResolverHandle& resolver);
virtual bool nameResolveFinished() const;
#endif // ENABLE_ASYNC_DNS
void setTimeout(int timeout) { this->timeout = timeout; }
private:
bool checkSocketIsReadable;
bool checkSocketIsWritable;
SocketHandle readCheckTarget;
SocketHandle writeCheckTarget;
bool nameResolverCheck;
public:
AbstractCommand(int cuid, const RequestHandle& req, DownloadEngine* e, const SocketHandle& s = SocketHandle());
virtual ~AbstractCommand();
bool execute();
};
#endif // _D_ABSTRACT_COMMAND_H_
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