mirror of https://github.com/aria2/aria2
146 lines
4.8 KiB
C++
146 lines
4.8 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - The high speed download utility
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* including the two.
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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*/
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/* copyright --> */
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#include "PeerReceiveHandshakeCommand.h"
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#include "PeerConnection.h"
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#include "DownloadEngine.h"
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#include "BtHandshakeMessage.h"
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#include "Util.h"
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#include "BtContext.h"
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#include "DlAbortEx.h"
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#include "PeerInteractionCommand.h"
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#include "Peer.h"
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#include "BtRegistry.h"
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#include "PeerStorage.h"
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#include "PieceStorage.h"
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#include "BtRuntime.h"
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#include "BtAnnounce.h"
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#include "BtProgressInfoFile.h"
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#include "BtConstants.h"
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#include "message.h"
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#include "Socket.h"
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#include "Logger.h"
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#include "prefs.h"
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#include "Option.h"
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#include "RequestGroupMan.h"
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#include "StringFormat.h"
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#include "RequestGroup.h"
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namespace aria2 {
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PeerReceiveHandshakeCommand::PeerReceiveHandshakeCommand
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(int32_t cuid,
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const PeerHandle& peer,
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DownloadEngine* e,
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const SocketHandle& s,
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const SharedHandle<PeerConnection>& peerConnection)
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:
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PeerAbstractCommand(cuid, peer, e, s),
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_peerConnection(peerConnection),
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_thresholdSpeed(e->option->getAsInt(PREF_BT_REQUEST_PEER_SPEED_LIMIT))
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{
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if(_peerConnection.isNull()) {
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_peerConnection.reset(new PeerConnection(cuid, socket, e->option));
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}
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unsigned int maxDownloadSpeed = e->option->getAsInt(PREF_MAX_DOWNLOAD_LIMIT);
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if(maxDownloadSpeed > 0) {
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_thresholdSpeed = std::min(maxDownloadSpeed, _thresholdSpeed);
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}
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}
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PeerReceiveHandshakeCommand::~PeerReceiveHandshakeCommand() {}
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bool PeerReceiveHandshakeCommand::exitBeforeExecute()
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{
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return e->isHaltRequested() || e->_requestGroupMan->downloadFinished();
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}
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bool PeerReceiveHandshakeCommand::executeInternal()
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{
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unsigned char data[BtHandshakeMessage::MESSAGE_LENGTH];
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size_t dataLength = BtHandshakeMessage::MESSAGE_LENGTH;
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// ignore return value. The received data is kept in PeerConnection object
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// because of peek = true.
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_peerConnection->receiveHandshake(data, dataLength, true);
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// To handle tracker's NAT-checking feature
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if(dataLength >= 48) {
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// check info_hash
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std::string infoHash = Util::toHex(&data[28], INFO_HASH_LENGTH);
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SharedHandle<BtRegistry> btRegistry = e->getBtRegistry();
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SharedHandle<BtContext> btContext = btRegistry->getBtContext(infoHash);
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SharedHandle<BtRuntime> btRuntime = btRegistry->getBtRuntime(infoHash);
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SharedHandle<PieceStorage> pieceStorage =
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btRegistry->getPieceStorage(infoHash);
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SharedHandle<PeerStorage> peerStorage =
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btRegistry->getPeerStorage(infoHash);
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if(btContext.isNull() || !btRuntime->ready()) {
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throw DlAbortEx
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(StringFormat("Unknown info hash %s", infoHash.c_str()).str());
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}
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TransferStat tstat = btContext->getOwnerRequestGroup()->calculateStat();
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if((!pieceStorage->downloadFinished() &&
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tstat.getDownloadSpeed() < _thresholdSpeed) ||
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btRuntime->lessThanMaxPeers()) {
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if(peerStorage->addPeer(peer)) {
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peer->usedBy(cuid);
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PeerInteractionCommand* command =
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new PeerInteractionCommand
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(cuid,
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btContext->getOwnerRequestGroup(),
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peer,
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e,
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btContext,
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btRuntime,
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pieceStorage,
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socket,
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PeerInteractionCommand::RECEIVER_WAIT_HANDSHAKE,
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_peerConnection);
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command->setPeerStorage(peerStorage);
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e->commands.push_back(command);
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logger->debug(MSG_INCOMING_PEER_CONNECTION, cuid, peer->usedBy());
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}
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}
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return true;
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} else {
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e->commands.push_back(this);
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return false;
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}
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}
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} // namespace aria2
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