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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. *
***************************************************************************/
#include <set>
#include <ksocketaddress.h>
#include <util/log.h>
#include <util/functions.h>
#include <util/sha1hash.h>
#include "peeruploader.h"
#include "peer.h"
#include "chunkmanager.h"
#include "packetwriter.h"
#include "torrent.h"
using namespace KNetwork;
namespace bt
{
PeerUploader::PeerUploader(Peer* peer) : peer(peer)
{
uploaded = 0;
}
PeerUploader::~PeerUploader()
{}
void PeerUploader::addRequest(const Request & r)
{
// Out(SYS_CON|LOG_DEBUG) <<
// TQString("PeerUploader::addRequest %1 %2 %3\n").tqarg(r.getIndex()).tqarg(r.getOffset()).tqarg(r.getLength()) << endl;
// allowed fast chunks go to the front of the queue
requests.append(r);
}
void PeerUploader::removeRequest(const Request & r)
{
// Out(SYS_CON|LOG_DEBUG) <<
// TQString("PeerUploader::removeRequest %1 %2 %3\n").tqarg(r.getIndex()).tqarg(r.getOffset()).tqarg(r.getLength()) << endl;
requests.remove(r);
peer->getPacketWriter().doNotSendPiece(r,peer->getStats().fast_extensions);
}
Uint32 PeerUploader::update(ChunkManager & cman,Uint32 opt_unchoked)
{
Uint32 ret = uploaded;
uploaded = 0;
PacketWriter & pw = peer->getPacketWriter();
// if we have choked the peer do not upload
if (peer->areWeChoked())
return ret;
if (peer->isSnubbed() && !peer->areWeChoked() &&
!cman.completed() && peer->getID() != opt_unchoked)
return ret;
while (requests.count() > 0)
{
Request r = requests.front();
Chunk* c = cman.grabChunk(r.getIndex());
if (c && c->getData())
{
if (!pw.sendChunk(r.getIndex(),r.getOffset(),r.getLength(),c))
{
if (peer->getStats().fast_extensions)
pw.sendReject(r);
}
requests.pop_front();
}
else
{
// remove requests we can't satisfy
Out(SYS_CON|LOG_DEBUG) << "Cannot satisfy request" << endl;
if (peer->getStats().fast_extensions)
pw.sendReject(r);
requests.pop_front();
}
}
return ret;
}
void PeerUploader::clearAllRequests()
{
bool fast_ext = peer->getStats().fast_extensions;
PacketWriter & pw = peer->getPacketWriter();
pw.clearPieces(fast_ext);
if (fast_ext)
{
// reject all requests
// if the peer supports fast extensions,
// choke doesn't mean reject all
TQValueList<Request>::iterator i = requests.begin();
while (i != requests.end())
{
pw.sendReject(*i);
i++;
}
}
requests.clear();
}
Uint32 PeerUploader::getNumRequests() const
{
return requests.count() + peer->getPacketWriter().getNumDataPacketsToWrite();
}
}
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