114 lines
3.4 KiB
C++
114 lines
3.4 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 <cstring>
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#include "util.h"
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#include "a2functional.h"
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#include "bittorrent_helper.h"
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#include "wallclock.h"
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namespace aria2 {
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DHTNode::DHTNode()
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: port_(0), rtt_(0), condition_(0), lastContact_(Timer::zero())
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{
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generateID();
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}
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DHTNode::DHTNode(const unsigned char* id)
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: port_(0), rtt_(0), condition_(1), lastContact_(Timer::zero())
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{
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memcpy(id_, id, DHT_ID_LENGTH);
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}
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DHTNode::~DHTNode() = default;
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void DHTNode::generateID() { util::generateRandomKey(id_); }
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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 { return !(*this == node); }
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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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}
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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 { return !isBad() && !isQuestionable(); }
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constexpr int BAD_CONDITION = 5;
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bool DHTNode::isBad() const { return condition_ >= BAD_CONDITION; }
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bool DHTNode::isQuestionable() const
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{
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return !isBad() && lastContact_.difference(global::wallclock()) >=
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DHT_NODE_CONTACT_INTERVAL;
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}
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void DHTNode::markGood() { condition_ = 0; }
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void DHTNode::markBad() { condition_ = BAD_CONDITION; }
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void DHTNode::updateLastContact() { lastContact_ = global::wallclock(); }
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void DHTNode::timeout() { ++condition_; }
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std::string DHTNode::toString() const
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{
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return fmt("DHTNode ID=%s, Host=%s(%u), Condition=%d, RTT=%ld",
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util::toHex(id_, DHT_ID_LENGTH).c_str(), ipaddr_.c_str(), port_,
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condition_, static_cast<long int>(rtt_.count()));
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}
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void DHTNode::setID(const unsigned char* id) { memcpy(id_, id, DHT_ID_LENGTH); }
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void DHTNode::setIPAddress(const std::string& ipaddr) { ipaddr_ = ipaddr; }
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} // namespace aria2
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