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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 "DefaultBtMessageDispatcher.h"
#include "BtRegistry.h"
#include "prefs.h"
#include "BtAbortOutstandingRequestEvent.h"
#include "BtCancelSendingPieceEvent.h"
#include "BtChokedEvent.h"
#include "BtChokingEvent.h"
#include "BtRegistry.h"
#include "BtMessageFactory.h"
void DefaultBtMessageDispatcher::addMessageToQueue(const BtMessageHandle& btMessage)
{
btMessage->onQueued();
messageQueue.push_back(btMessage);
}
void DefaultBtMessageDispatcher::addMessageToQueue(const BtMessages& btMessages)
{
for(BtMessages::const_iterator itr = btMessages.begin(); itr != btMessages.end(); itr++) {
addMessageToQueue(*itr);
}
}
void DefaultBtMessageDispatcher::sendMessages() {
BtMessages tempQueue;
while(messageQueue.size() > 0) {
BtMessageHandle msg = messageQueue.front();
messageQueue.pop_front();
if(maxUploadSpeedLimit > 0 &&
msg->isUploading() && !msg->isSendingInProgress()) {
TransferStat stat = peerStorage->calculateStat();
if(maxUploadSpeedLimit < stat.getUploadSpeed()) {
tempQueue.push_back(msg);
continue;
}
}
msg->send();
if(msg->isSendingInProgress()) {
messageQueue.push_front(msg);
break;
}
}
copy(tempQueue.begin(), tempQueue.end(), back_inserter(messageQueue));
}
// Cancel sending piece message to peer.
void DefaultBtMessageDispatcher::doCancelSendingPieceAction(int32_t index, int32_t begin, int32_t length)
{
BtCancelSendingPieceEventHandle event =
new BtCancelSendingPieceEvent(index, begin, length);
BtMessages tempQueue = messageQueue;
for(BtMessages::iterator itr = tempQueue.begin(); itr != tempQueue.end(); itr++) {
(*itr)->handleEvent(event);
}
}
// Cancel sending piece message to peer.
// TODO Is this method really necessary?
void DefaultBtMessageDispatcher::doCancelSendingPieceAction(const PieceHandle& piece)
{
}
// localhost cancels outstanding download requests to the peer.
void DefaultBtMessageDispatcher::doAbortOutstandingRequestAction(const PieceHandle& piece) {
for(RequestSlots::iterator itr = requestSlots.begin();
itr != requestSlots.end();) {
RequestSlot& slot = *itr;
if(slot.getIndex() == piece->getIndex()) {
logger->debug("CUID#%d - Deleting request slot index=%d, blockIndex=%d",
cuid,
slot.getIndex(),
slot.getBlockIndex());
piece->cancelBlock(slot.getBlockIndex());
itr = requestSlots.erase(itr);
} else {
itr++;
}
}
BtAbortOutstandingRequestEventHandle event =
new BtAbortOutstandingRequestEvent(piece);
BtMessages tempQueue = messageQueue;
for(BtMessages::iterator itr = tempQueue.begin(); itr != tempQueue.end(); ++itr) {
(*itr)->handleEvent(event);
}
}
// localhost received choke message from the peer.
void DefaultBtMessageDispatcher::doChokedAction()
{
for(RequestSlots::iterator itr = requestSlots.begin();
itr != requestSlots.end();) {
RequestSlot& slot = *itr;
if(peer->isInPeerAllowedIndexSet(slot.getIndex())) {
itr++;
} else {
logger->debug("CUID#%d - Deleting request slot index=%d, blockIndex=%d"
" because localhost got choked.",
cuid,
slot.getIndex(),
slot.getBlockIndex());
PieceHandle piece = pieceStorage->getPiece(slot.getIndex());
piece->cancelBlock(slot.getBlockIndex());
itr = requestSlots.erase(itr);
}
}
BtChokedEventHandle event = new BtChokedEvent();
BtMessages tempQueue = messageQueue;
for(BtMessages::iterator itr = tempQueue.begin(); itr != tempQueue.end(); ++itr) {
(*itr)->handleEvent(event);
}
}
// localhost dispatched choke message to the peer.
void DefaultBtMessageDispatcher::doChokingAction()
{
BtChokingEventHandle event = new BtChokingEvent();
BtMessages tempQueue = messageQueue;
for(BtMessages::iterator itr = tempQueue.begin(); itr != tempQueue.end(); ++itr) {
(*itr)->handleEvent(event);
}
}
void DefaultBtMessageDispatcher::checkRequestSlotAndDoNecessaryThing()
{
for(RequestSlots::iterator itr = requestSlots.begin();
itr != requestSlots.end();) {
RequestSlot& slot = *itr;
PieceHandle piece = pieceStorage->getPiece(slot.getIndex());
if(slot.isTimeout(requestTimeout)) {
logger->debug("CUID#%d - Deleting request slot blockIndex=%d"
" because of time out",
cuid,
slot.getBlockIndex());
piece->cancelBlock(slot.getBlockIndex());
peer->snubbing = true;
itr = requestSlots.erase(itr);
} else if(piece->hasBlock(slot.getBlockIndex())) {
logger->debug("CUID#%d - Deleting request slot blockIndex=%d because"
" the block has been acquired.",
cuid,
slot.getBlockIndex());
addMessageToQueue(messageFactory->createCancelMessage(slot.getIndex(),
slot.getBegin(),
slot.getLength()));
itr = requestSlots.erase(itr);
} else {
itr++;
}
}
}
bool DefaultBtMessageDispatcher::isSendingInProgress()
{
if(messageQueue.size() > 0) {
return messageQueue.front()->isSendingInProgress();
} else {
return false;
}
}
int32_t DefaultBtMessageDispatcher::countOutstandingRequest()
{
return requestSlots.size();
}
bool DefaultBtMessageDispatcher::isOutstandingRequest(int32_t index, int32_t blockIndex) {
for(RequestSlots::const_iterator itr = requestSlots.begin();
itr != requestSlots.end(); itr++) {
const RequestSlot& slot = *itr;
if(slot.getIndex() == index && slot.getBlockIndex() == blockIndex) {
return true;
}
}
return false;
}
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