mirror of https://github.com/aria2/aria2
125 lines
3.1 KiB
C++
125 lines
3.1 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 "DHTNode.h"
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#include "DHTUtil.h"
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#include "Util.h"
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#include <cstring>
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namespace aria2 {
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DHTNode::DHTNode():_port(0), _rtt(0), _condition(0), _lastContact(0)
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{
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generateID();
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}
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DHTNode::DHTNode(const unsigned char* id):_port(0), _rtt(0), _condition(1), _lastContact(0)
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{
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memcpy(_id, id, DHT_ID_LENGTH);
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}
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void DHTNode::generateID()
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{
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DHTUtil::generateRandomKey(_id);
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}
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bool DHTNode::operator==(const DHTNode& node) const
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{
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return memcmp(_id, node._id, DHT_ID_LENGTH) == 0;
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}
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bool DHTNode::operator<(const DHTNode& node) const
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{
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for(size_t i = 0; i < DHT_ID_LENGTH; ++i) {
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if(_id[i] > node._id[i]) {
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return false;
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} else if(_id[i] < node._id[i]) {
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return true;
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}
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}
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return true;
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}
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bool DHTNode::isGood() const
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{
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return !isBad() && !isQuestionable();
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}
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#define BAD_CONDITION 5
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bool DHTNode::isBad() const
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{
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return _condition >= BAD_CONDITION;
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}
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bool DHTNode::isQuestionable() const
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{
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return !isBad() && _lastContact.elapsed(DHT_NODE_CONTACT_INTERVAL);
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}
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void DHTNode::markGood()
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{
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_condition = 0;
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}
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void DHTNode::markBad()
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{
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_condition = BAD_CONDITION;
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}
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void DHTNode::updateLastContact()
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{
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_lastContact.reset();
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}
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void DHTNode::timeout()
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{
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++_condition;
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}
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std::string DHTNode::toString() const
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{
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return "DHTNode ID="+Util::toHex(_id, DHT_ID_LENGTH)+
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", Host="+_ipaddr+":"+Util::uitos(_port)+
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", Condition="+Util::uitos(_condition)+
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", RTT="+Util::uitos(_rtt);
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}
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void DHTNode::setID(const unsigned char* id)
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{
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memcpy(_id, id, DHT_ID_LENGTH);
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}
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} // namespace aria2
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