mirror of https://github.com/aria2/aria2
119 lines
4.1 KiB
C++
119 lines
4.1 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 "DHTPeerLookupTask.h"
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#include "Peer.h"
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#include "DHTGetPeersReplyMessage.h"
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#include "Logger.h"
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#include "DHTMessageFactory.h"
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#include "DHTNode.h"
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#include "DHTNodeLookupEntry.h"
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#include "DHTMessageDispatcher.h"
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#include "DHTMessageCallback.h"
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#include "PeerStorage.h"
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#include "BtRuntime.h"
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#include "util.h"
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#include "DHTBucket.h"
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#include "bittorrent_helper.h"
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namespace aria2 {
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DHTPeerLookupTask::DHTPeerLookupTask
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(const SharedHandle<DownloadContext>& downloadContext):
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DHTAbstractNodeLookupTask(bittorrent::getInfoHash(downloadContext)) {}
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void
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DHTPeerLookupTask::getNodesFromMessage
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(std::vector<SharedHandle<DHTNode> >& nodes,
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const SharedHandle<DHTMessage>& message)
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{
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SharedHandle<DHTGetPeersReplyMessage> m
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(dynamic_pointer_cast<DHTGetPeersReplyMessage>(message));
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if(!m.isNull()) {
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const std::vector<SharedHandle<DHTNode> >& knodes = m->getClosestKNodes();
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nodes.insert(nodes.end(), knodes.begin(), knodes.end());
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}
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}
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void DHTPeerLookupTask::onReceivedInternal(const SharedHandle<DHTMessage>& message)
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{
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SharedHandle<DHTGetPeersReplyMessage> m(dynamic_pointer_cast<DHTGetPeersReplyMessage>(message));
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if(m.isNull()) {
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return;
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}
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SharedHandle<DHTNode> remoteNode = m->getRemoteNode();
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_tokenStorage[util::toHex(remoteNode->getID(), DHT_ID_LENGTH)] = m->getToken();
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_peerStorage->addPeer(m->getValues());
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_peers.insert(_peers.end(), m->getValues().begin(), m->getValues().end());
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_logger->info("Received %u peers.", m->getValues().size());
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}
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SharedHandle<DHTMessage> DHTPeerLookupTask::createMessage(const SharedHandle<DHTNode>& remoteNode)
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{
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return _factory->createGetPeersMessage(remoteNode, _targetID);
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}
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void DHTPeerLookupTask::onFinish()
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{
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// send announce_peer message to K closest nodes
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size_t num = DHTBucket::K;
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for(std::deque<SharedHandle<DHTNodeLookupEntry> >::const_iterator i =
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_entries.begin(), eoi = _entries.end(); i != eoi && num > 0; ++i,
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--num) {
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if((*i)->_used) {
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const SharedHandle<DHTNode>& node = (*i)->_node;
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SharedHandle<DHTMessage> m =
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_factory->createAnnouncePeerMessage
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(node,
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_targetID, // this is infoHash
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_btRuntime->getListenPort(),
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_tokenStorage[util::toHex(node->getID(), DHT_ID_LENGTH)]);
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_dispatcher->addMessageToQueue(m);
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}
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}
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}
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void DHTPeerLookupTask::setBtRuntime(const SharedHandle<BtRuntime>& btRuntime)
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{
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_btRuntime = btRuntime;
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}
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void DHTPeerLookupTask::setPeerStorage(const SharedHandle<PeerStorage>& ps)
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{
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_peerStorage = ps;
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}
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} // namespace aria2
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