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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 --> */
#include "BtRequestMessage.h"
#include "PeerMessageUtil.h"
#include "Util.h"
#include "DlAbortEx.h"
#include "BtAbortOutstandingRequestEvent.h"
#include "message.h"
BtRequestMessageHandle BtRequestMessage::create(const unsigned char* data, int32_t dataLength) {
if(dataLength != 13) {
throw new DlAbortEx(EX_INVALID_PAYLOAD_SIZE, "request", dataLength, 13);
}
int8_t id = PeerMessageUtil::getId(data);
if(id != ID) {
throw new DlAbortEx(EX_INVALID_BT_MESSAGE_ID, id, "request", ID);
}
BtRequestMessageHandle message = new BtRequestMessage();
message->setIndex(PeerMessageUtil::getIntParam(data, 1));
message->setBegin(PeerMessageUtil::getIntParam(data, 5));
message->setLength(PeerMessageUtil::getIntParam(data, 9));
return message;
}
void BtRequestMessage::doReceivedAction() {
if(pieceStorage->hasPiece(index) &&
(!peer->amChoking ||
peer->amChoking && peer->isInAmAllowedIndexSet(index))) {
BtMessageHandle msg = messageFactory->createPieceMessage(index,
begin,
length);
dispatcher->addMessageToQueue(msg);
} else {
if(peer->isFastExtensionEnabled()) {
BtMessageHandle msg = messageFactory->createRejectMessage(index,
begin,
length);
dispatcher->addMessageToQueue(msg);
}
}
}
int32_t BtRequestMessage::MESSAGE_LENGTH = 17;
const unsigned char* BtRequestMessage::getMessage() {
if(!msg) {
/**
* len --- 13, 4bytes
* id --- 6, 1byte
* index --- index, 4bytes
* begin --- begin, 4bytes
* length --- length, 4bytes
* total: 17bytes
*/
msg = new unsigned char[MESSAGE_LENGTH];
PeerMessageUtil::createPeerMessageString(msg, MESSAGE_LENGTH, 13, ID);
PeerMessageUtil::setIntParam(&msg[5], index);
PeerMessageUtil::setIntParam(&msg[9], begin);
PeerMessageUtil::setIntParam(&msg[13], length);
}
return msg;
}
int32_t BtRequestMessage::getMessageLength() {
return MESSAGE_LENGTH;
}
string BtRequestMessage::toString() const {
return "request index="+Util::itos(index)+", begin="+Util::itos(begin)+
", length="+Util::itos(length);
}
void BtRequestMessage::onQueued() {
RequestSlot requestSlot(index, begin, length, blockIndex);
dispatcher->addOutstandingRequest(requestSlot);
}
bool BtRequestMessage::BtAbortOutstandingRequestEventListener::canHandle(const BtEventHandle& event) {
BtAbortOutstandingRequestEvent* intEvent = dynamic_cast<BtAbortOutstandingRequestEvent*>(event.get());
return intEvent != 0;
}
void BtRequestMessage::BtAbortOutstandingRequestEventListener::handleEventInternal(const BtEventHandle& event) {
message->handleAbortOutstandingRequestEvent(event);
}
void BtRequestMessage::handleAbortOutstandingRequestEvent(const BtEventHandle& event) {
BtAbortOutstandingRequestEvent* intEvent = (BtAbortOutstandingRequestEvent*)event.get();
if(index == intEvent->getPiece()->getIndex() &&
!invalidate &&
!sendingInProgress) {
invalidate = true;
}
}
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