/usr/include/libktorrent/peer/connectionlimit.h is in libktorrent-dev 1.3.1-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (C) 2012 by *
* Joris Guisson <joris.guisson@gmail.com> *
* *
* 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. *
***************************************************************************/
#ifndef BT_CONNECTIONLIMIT_H
#define BT_CONNECTIONLIMIT_H
#include <QMap>
#include <QSharedPointer>
#include <util/constants.h>
#include <util/sha1hash.h>
#include <ktorrent_export.h>
namespace bt
{
/**
* Maintains the connection limit. It uses a Token for that.
*/
class KTORRENT_EXPORT ConnectionLimit
{
public:
ConnectionLimit();
virtual ~ConnectionLimit();
/// Get the total number of connections currently in use
bt::Uint32 totalConnections() const {return global_total;}
/**
* Set the connection limits
* @param global_limit Global limit
* @param torrent_limit Per torrent limit
**/
void setLimits(bt::Uint32 global_limit, bt::Uint32 torrent_limit);
/**
* Token representing the allowance to open a connection.
* When the token is destroyed, it will be automatically released.
*/
class Token
{
public:
Token(ConnectionLimit & limit, const bt::SHA1Hash & hash);
~Token();
/// Get the info hash
const bt::SHA1Hash & infoHash() const {return hash;}
typedef QSharedPointer<Token> Ptr;
private:
ConnectionLimit & limit;
bt::SHA1Hash hash;
};
/**
* Request a token for a given torrent
* @param hash Info hash of the torrent
* @return ConnectionLimit::Token::Ptr a valid token if a connection can be opened, a 0 pointer if not
**/
Token::Ptr acquire(const SHA1Hash & hash);
protected:
/**
* Release one Token. Will be done by destructor of Token.
* @param token The Token
**/
void release(const Token & token);
private:
bt::Uint32 global_limit;
bt::Uint32 global_total;
bt::Uint32 torrent_limit;
QMap<SHA1Hash, bt::Uint32> torrent_totals;
};
}
#endif // BT_CONNECTIONLIMIT_H
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