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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 "RequestMessage.h"
#include "PeerInteraction.h"
#include "PeerMessageUtil.h"
#include "Util.h"
#include "DlAbortEx.h"
RequestMessage* RequestMessage::create(const char* data, int dataLength) {
if(dataLength != 13) {
throw new DlAbortEx("invalid payload size for %s, size = %d. It should be %d", "request", dataLength, 13);
}
int id = PeerMessageUtil::getId(data);
if(id != ID) {
throw new DlAbortEx("invalid ID=%d for %s. It should be %d.",
id, "request", ID);
}
RequestMessage* requestMessage = new RequestMessage();
requestMessage->setIndex(PeerMessageUtil::getIntParam(data, 1));
requestMessage->setBegin(PeerMessageUtil::getIntParam(data, 5));
requestMessage->setLength(PeerMessageUtil::getIntParam(data, 9));
return requestMessage;
}
void RequestMessage::receivedAction() {
TorrentMan* torrentMan = peerInteraction->getTorrentMan();
if(torrentMan->hasPiece(index) &&
(!peer->amChoking ||
peer->amChoking && peerInteraction->isInFastSet(index))) {
peerInteraction->addMessage(peerInteraction->createPieceMessage(index, begin, length));
} else {
if(peer->isFastExtensionEnabled()) {
peerInteraction->addMessage(peerInteraction->createRejectMessage(index, begin, length));
}
}
}
const char* RequestMessage::getMessage() {
if(!inProgress) {
/**
* len --- 13, 4bytes
* id --- 6, 1byte
* index --- index, 4bytes
* begin --- begin, 4bytes
* length --- length, 4bytes
* total: 17bytes
*/
PeerMessageUtil::createPeerMessageString(msg, sizeof(msg), 13, ID);
PeerMessageUtil::setIntParam(&msg[5], index);
PeerMessageUtil::setIntParam(&msg[9], begin);
PeerMessageUtil::setIntParam(&msg[13], length);
}
return msg;
}
int RequestMessage::getMessageLength() {
return sizeof(msg);
}
void RequestMessage::check() const {
PeerMessageUtil::checkIndex(index, pieces);
PeerMessageUtil::checkBegin(begin, pieceLength);
PeerMessageUtil::checkLength(length);
PeerMessageUtil::checkRange(begin, length, pieceLength);
}
string RequestMessage::toString() const {
return "request index="+Util::itos(index)+", begin="+Util::itos(begin)+
", length="+Util::itos(length);
}
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