mirror of https://github.com/aria2/aria2
137 lines
3.3 KiB
C++
137 lines
3.3 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 "DHTNode.h"
|
|
|
|
#include <cstring>
|
|
|
|
#include "util.h"
|
|
#include "a2functional.h"
|
|
#include "bittorrent_helper.h"
|
|
#include "wallclock.h"
|
|
|
|
namespace aria2 {
|
|
|
|
DHTNode::DHTNode():port_(0), rtt_(0), condition_(0), lastContact_(0)
|
|
{
|
|
generateID();
|
|
}
|
|
|
|
DHTNode::DHTNode(const unsigned char* id):port_(0), rtt_(0), condition_(1), lastContact_(0)
|
|
{
|
|
memcpy(id_, id, DHT_ID_LENGTH);
|
|
}
|
|
|
|
DHTNode::~DHTNode() {}
|
|
|
|
void DHTNode::generateID()
|
|
{
|
|
util::generateRandomKey(id_);
|
|
}
|
|
|
|
bool DHTNode::operator==(const DHTNode& node) const
|
|
{
|
|
return memcmp(id_, node.id_, DHT_ID_LENGTH) == 0;
|
|
}
|
|
|
|
bool DHTNode::operator<(const DHTNode& node) const
|
|
{
|
|
for(size_t i = 0; i < DHT_ID_LENGTH; ++i) {
|
|
if(id_[i] > node.id_[i]) {
|
|
return false;
|
|
} else if(id_[i] < node.id_[i]) {
|
|
return true;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool DHTNode::isGood() const
|
|
{
|
|
return !isBad() && !isQuestionable();
|
|
}
|
|
|
|
#define BAD_CONDITION 5
|
|
|
|
bool DHTNode::isBad() const
|
|
{
|
|
return condition_ >= BAD_CONDITION;
|
|
}
|
|
|
|
bool DHTNode::isQuestionable() const
|
|
{
|
|
return !isBad() &&
|
|
lastContact_.difference(global::wallclock) >= DHT_NODE_CONTACT_INTERVAL;
|
|
}
|
|
|
|
void DHTNode::markGood()
|
|
{
|
|
condition_ = 0;
|
|
}
|
|
|
|
void DHTNode::markBad()
|
|
{
|
|
condition_ = BAD_CONDITION;
|
|
}
|
|
|
|
void DHTNode::updateLastContact()
|
|
{
|
|
lastContact_ = global::wallclock;
|
|
}
|
|
|
|
void DHTNode::timeout()
|
|
{
|
|
++condition_;
|
|
}
|
|
|
|
std::string DHTNode::toString() const
|
|
{
|
|
return strconcat("DHTNode ID=", util::toHex(id_, DHT_ID_LENGTH),
|
|
", Host=", ipaddr_, ":", util::uitos(port_),
|
|
", Condition=", util::uitos(condition_),
|
|
", RTT=", util::uitos(rtt_));
|
|
}
|
|
|
|
void DHTNode::setID(const unsigned char* id)
|
|
{
|
|
memcpy(id_, id, DHT_ID_LENGTH);
|
|
}
|
|
|
|
void DHTNode::setIPAddress(const std::string& ipaddr)
|
|
{
|
|
ipaddr_ = ipaddr;
|
|
}
|
|
|
|
} // namespace aria2
|