aria2/src/DHTFindNodeMessage.cc

92 lines
3.2 KiB
C++

/* <!-- 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 "DHTFindNodeMessage.h"
#include <cstring>
#include "DHTNode.h"
#include "DHTRoutingTable.h"
#include "DHTMessageFactory.h"
#include "DHTMessageDispatcher.h"
#include "DHTMessageCallback.h"
#include "util.h"
namespace aria2 {
const std::string DHTFindNodeMessage::FIND_NODE("find_node");
const std::string DHTFindNodeMessage::TARGET_NODE("target");
DHTFindNodeMessage::DHTFindNodeMessage(const SharedHandle<DHTNode>& localNode,
const SharedHandle<DHTNode>& remoteNode,
const unsigned char* targetNodeID,
const std::string& transactionID):
DHTQueryMessage(localNode, remoteNode, transactionID)
{
memcpy(targetNodeID_, targetNodeID, DHT_ID_LENGTH);
}
DHTFindNodeMessage::~DHTFindNodeMessage() {}
void DHTFindNodeMessage::doReceivedAction()
{
std::vector<SharedHandle<DHTNode> > nodes;
getRoutingTable()->getClosestKNodes(nodes, targetNodeID_);
SharedHandle<DHTMessage> reply =
getMessageFactory()->createFindNodeReplyMessage
(getRemoteNode(), nodes, getTransactionID());
getMessageDispatcher()->addMessageToQueue(reply);
}
SharedHandle<Dict> DHTFindNodeMessage::getArgument()
{
SharedHandle<Dict> aDict = Dict::g();
aDict->put(DHTMessage::ID, String::g(getLocalNode()->getID(), DHT_ID_LENGTH));
aDict->put(TARGET_NODE, String::g(targetNodeID_, DHT_ID_LENGTH));
return aDict;
}
const std::string& DHTFindNodeMessage::getMessageType() const
{
return FIND_NODE;
}
std::string DHTFindNodeMessage::toStringOptional() const
{
return "targetNodeID="+util::toHex(targetNodeID_, DHT_ID_LENGTH);
}
} // namespace aria2