mirror of https://github.com/aria2/aria2
128 lines
4.0 KiB
C++
128 lines
4.0 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 "DownloadEngine.h"
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#include "Peer.h"
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#include "RequestGroupMan.h"
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#include "RecoverableException.h"
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#include "CUIDCounter.h"
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#include "message.h"
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#include "ReceiverMSEHandshakeCommand.h"
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#include "Logger.h"
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#include "Socket.h"
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#include <utility>
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namespace aria2 {
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unsigned int PeerListenCommand::__numInstance = 0;
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PeerListenCommand* PeerListenCommand::__instance = 0;
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PeerListenCommand::PeerListenCommand(int32_t cuid, DownloadEngine* e):
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Command(cuid),
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e(e),
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_lowestSpeedLimit(20*1024)
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{
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++__numInstance;
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}
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PeerListenCommand::~PeerListenCommand()
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{
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--__numInstance;
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}
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bool PeerListenCommand::bindPort(uint16_t& port, IntSequence& seq)
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{
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socket.reset(new SocketCore());
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while(seq.hasNext()) {
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int sport = seq.next();
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if(!(0 < sport && sport <= UINT16_MAX)) {
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continue;
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}
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port = sport;
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try {
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socket->bind(port);
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socket->beginListen();
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socket->setNonBlockingMode();
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logger->info(MSG_LISTENING_PORT, cuid, port);
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return true;
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} catch(RecoverableException& ex) {
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logger->error(MSG_BIND_FAILURE, ex, cuid, port);
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socket->closeConnection();
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}
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}
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return false;
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}
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bool PeerListenCommand::execute() {
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if(e->isHaltRequested() || e->_requestGroupMan->downloadFinished()) {
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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.reset(socket->acceptConnection());
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std::pair<std::string, uint16_t> peerInfo;
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peerSocket->getPeerInfo(peerInfo);
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peerSocket->setNonBlockingMode();
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PeerHandle peer(new Peer(peerInfo.first, peerInfo.second, true));
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int32_t cuid = CUIDCounterSingletonHolder::instance()->newID();
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Command* command =
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new ReceiverMSEHandshakeCommand(cuid, peer, e, peerSocket);
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e->commands.push_back(command);
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logger->debug("Accepted the connection from %s:%u.",
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peer->ipaddr.c_str(),
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peer->port);
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logger->debug("Added CUID#%d to receive BitTorrent/MSE handshake.", cuid);
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} catch(RecoverableException& ex) {
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logger->debug(MSG_ACCEPT_FAILURE, ex, cuid);
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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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PeerListenCommand* PeerListenCommand::getInstance(DownloadEngine* e)
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{
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if(__numInstance == 0) {
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__instance = new PeerListenCommand(CUIDCounterSingletonHolder::instance()->newID(), e);
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}
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return __instance;
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}
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} // namespace aria2
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