mirror of https://github.com/aria2/aria2
108 lines
3.9 KiB
C++
108 lines
3.9 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 "PeerListenCommand.h"
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#include "PeerInteractionCommand.h"
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#include "RecoverableException.h"
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#include "CUIDCounter.h"
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PeerListenCommand::PeerListenCommand(int cuid,
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TorrentDownloadEngine* e,
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const BtContextHandle& btContext)
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:BtContextAwareCommand(cuid, btContext),
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e(e),
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_lowestSpeedLimit(20*1024) {}
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PeerListenCommand::~PeerListenCommand() {}
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int PeerListenCommand::bindPort(int portRangeStart, int portRangeEnd) {
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if(portRangeStart > portRangeEnd) {
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return -1;
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}
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for(int port = portRangeStart; port <= portRangeEnd; port++) {
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try {
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socket->beginListen(port);
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logger->info("CUID#%d - using port %d for accepting new connections",
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cuid, port);
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return port;
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} catch(RecoverableException* ex) {
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logger->error("CUID#%d - an error occurred while binding port=%d",
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ex, cuid, port);
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socket->closeConnection();
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delete ex;
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}
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}
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return -1;
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}
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bool PeerListenCommand::execute() {
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if(btRuntime->isHalt()) {
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return true;
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}
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for(int i = 0; i < 3 && socket->isReadable(0); i++) {
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SocketHandle peerSocket;
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try {
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peerSocket = socket->acceptConnection();
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pair<string, int> peerInfo;
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peerSocket->getPeerInfo(peerInfo);
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pair<string, int> localInfo;
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peerSocket->getAddrInfo(localInfo);
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TransferStat tstat = peerStorage->calculateStat();
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if(peerInfo.first != localInfo.first &&
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(!pieceStorage->downloadFinished() && tstat.getDownloadSpeed() < _lowestSpeedLimit ||
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btRuntime->getConnections() < MAX_PEERS)) {
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PeerHandle peer = PeerHandle(new Peer(peerInfo.first, peerInfo.second,
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btContext->getPieceLength(),
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btContext->getTotalLength()));
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if(peerStorage->addIncomingPeer(peer)) {
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peer->cuid = CUIDCounterSingletonHolder::instance()->newID();
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PeerInteractionCommand* command =
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new PeerInteractionCommand(peer->cuid, peer, e,
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btContext,
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peerSocket,
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PeerInteractionCommand::RECEIVER_WAIT_HANDSHAKE);
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e->commands.push_back(command);
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logger->debug("CUID#%d - incoming connection, adding new command CUID#%d", cuid, peer->cuid);
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}
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}
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} catch(RecoverableException* ex) {
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logger->error("CUID#%d - error in accepting connection", ex, cuid);
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delete ex;
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}
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}
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e->commands.push_back(this);
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return false;
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}
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