/usr/include/libktorrent/peer/utpex.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) 2005 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 BTUTPEX_H
#define BTUTPEX_H
#include <map>
#include <ktorrent_export.h>
#include <net/address.h>
#include <util/constants.h>
#include <peer/peermanager.h>
#include "peerprotocolextension.h"
namespace bt
{
class Peer;
class BEncoder;
/**
* @author Joris Guisson <joris.guisson@gmail.com>
*
* Class which handles µTorrent's peer exchange
*/
class KTORRENT_EXPORT UTPex : public PeerProtocolExtension, public PeerManager::PeerVisitor
{
public:
UTPex(Peer* peer,Uint32 id);
virtual ~UTPex();
/**
* Handle a PEX packet
* @param packet The packet
* @param size The size of the packet
*/
void handlePacket(const Uint8* packet,Uint32 size);
/// Do we need to update PEX (should happen every minute)
bool needsUpdate() const;
/// Send a new PEX packet to the Peer
void update();
/// Change the ID used in the extended packets
void changeID(Uint32 nid) {id = nid;}
/// Globally disable or enabled PEX
static void setEnabled(bool on) {pex_enabled = on;}
/// Is PEX enabled globally
static bool isEnabled() {return pex_enabled;}
private:
void encode(BEncoder & enc,const std::map<Uint32,net::Address> & ps);
void encodeFlags(BEncoder & enc,const std::map<Uint32,Uint8> & flags);
virtual void visit(const bt::Peer::Ptr p);
private:
std::map<Uint32,net::Address> peers;
TimeStamp last_updated;
static bool pex_enabled;
std::map<Uint32,net::Address> added;
std::map<Uint32,Uint8> flags;
std::map<Uint32,net::Address> npeers;
};
}
#endif
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