mirror of https://github.com/aria2/aria2
105 lines
3.4 KiB
C++
105 lines
3.4 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - a simple utility for downloading files faster
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*
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* Copyright (C) 2006 Tatsuhiro Tsujikawa
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* copyright --> */
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#include "RequestMessage.h"
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#include "PeerInteraction.h"
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#include "PeerMessageUtil.h"
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#include "Util.h"
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#include "DlAbortEx.h"
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RequestMessage* RequestMessage::create(const char* data, int dataLength) {
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if(dataLength != 13) {
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throw new DlAbortEx("invalid payload size for %s, size = %d. It should be %d", "request", dataLength, 13);
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}
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int id = PeerMessageUtil::getId(data);
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if(id != ID) {
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throw new DlAbortEx("invalid ID=%d for %s. It should be %d.",
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id, "request", ID);
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}
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RequestMessage* requestMessage = new RequestMessage();
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requestMessage->setIndex(PeerMessageUtil::getIntParam(data, 1));
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requestMessage->setBegin(PeerMessageUtil::getIntParam(data, 5));
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requestMessage->setLength(PeerMessageUtil::getIntParam(data, 9));
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return requestMessage;
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}
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void RequestMessage::receivedAction() {
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TorrentMan* torrentMan = peerInteraction->getTorrentMan();
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if(torrentMan->hasPiece(index) &&
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(!peer->amChoking ||
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peer->amChoking && peerInteraction->isInFastSet(index))) {
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peerInteraction->addMessage(peerInteraction->getPeerMessageFactory()->
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createPieceMessage(index, begin, length));
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} else {
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if(peer->isFastExtensionEnabled()) {
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peerInteraction->addMessage(peerInteraction->getPeerMessageFactory()->
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createRejectMessage(index, begin, length));
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}
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}
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}
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const char* RequestMessage::getMessage() {
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if(!inProgress) {
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/**
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* len --- 13, 4bytes
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* id --- 6, 1byte
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* index --- index, 4bytes
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* begin --- begin, 4bytes
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* length --- length, 4bytes
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* total: 17bytes
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*/
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PeerMessageUtil::createPeerMessageString(msg, sizeof(msg), 13, ID);
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PeerMessageUtil::setIntParam(&msg[5], index);
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PeerMessageUtil::setIntParam(&msg[9], begin);
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PeerMessageUtil::setIntParam(&msg[13], length);
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}
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return msg;
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}
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int RequestMessage::getMessageLength() {
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return sizeof(msg);
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}
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void RequestMessage::check() const {
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PeerMessageUtil::checkIndex(index, pieces);
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PeerMessageUtil::checkBegin(begin, pieceLength);
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PeerMessageUtil::checkLength(length);
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PeerMessageUtil::checkRange(begin, length, pieceLength);
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}
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string RequestMessage::toString() const {
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return "request index="+Util::itos(index)+", begin="+Util::itos(begin)+
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", length="+Util::itos(length);
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}
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void RequestMessage::onPush() {
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RequestSlot requestSlot(index, begin, length, blockIndex);
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peerInteraction->addRequestSlot(requestSlot);
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}
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void RequestMessage::onAbortPiece(const Piece& piece) {
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if(!invalidate &&
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!inProgress &&
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this->index == piece.getIndex()) {
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invalidate = true;
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}
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}
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