Adam Ierymenko
12 years ago
7 changed files with 258 additions and 189 deletions
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/*
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* ZeroTier One - Global Peer to Peer Ethernet |
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* Copyright (C) 2011-2014 ZeroTier Networks LLC |
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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 3 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, see <http://www.gnu.org/licenses/>.
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* |
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* -- |
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* |
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* ZeroTier may be used and distributed under the terms of the GPLv3, which |
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* are available at: http://www.gnu.org/licenses/gpl-3.0.html
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* |
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* If you would like to embed ZeroTier into a commercial application or |
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* redistribute it in a modified binary form, please contact ZeroTier Networks |
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* LLC. Start here: http://www.zerotier.com/
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*/ |
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#ifndef ZT_PATH_HPP |
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#define ZT_PATH_HPP |
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#include <stdint.h> |
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#include "Constants.hpp" |
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#include "InetAddress.hpp" |
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#include "Utils.hpp" |
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#include <string> |
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namespace ZeroTier { |
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/**
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* WAN address and protocol for reaching a peer |
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*/ |
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class Path |
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{ |
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public: |
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Path() : |
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_lastSent(0), |
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_lastReceived(0), |
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_lastFirewallOpener(0), |
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_lastPing(0), |
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_addr(), |
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_tcp(false), |
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_fixed(false) {} |
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Path(const InetAddress &addr,bool tcp,bool fixed) : |
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_lastSent(0), |
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_lastReceived(0), |
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_lastFirewallOpener(0), |
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_lastPing(0), |
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_addr(addr), |
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_tcp(tcp), |
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_fixed(fixed) {} |
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inline const InetAddress &address() const throw() { return _addr; } |
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inline bool tcp() const throw() { return _tcp; } |
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inline uint64_t lastSent() const throw() { return _lastSent; } |
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inline uint64_t lastReceived() const throw() { return _lastReceived; } |
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inline uint64_t lastFirewallOpener() const throw() { return _lastFirewallOpener; } |
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inline uint64_t lastPing() const throw() { return _lastPing; } |
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inline bool fixed() const throw() { return _fixed; } |
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inline void sent(uint64_t t) throw() { _lastSent = t; } |
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inline void received(uint64_t t) throw() { _lastReceived = t; } |
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inline void firewallOpenerSent(uint64_t t) throw() { _lastFirewallOpener = t; } |
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inline void pinged(uint64_t t) throw() { _lastPing = t; } |
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inline bool active(uint64_t now) const |
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throw() |
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{ |
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return ((_addr)&&((_fixed)||((now - _lastReceived) < ZT_PEER_PATH_ACTIVITY_TIMEOUT))); |
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} |
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/**
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* @return Human-readable address and other information about this path, some computed as of current time |
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*/ |
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inline std::string toString() const |
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{ |
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uint64_t now = Utils::now(); |
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char lsago[32],lrago[32],lfoago[32],lpago[32]; |
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Utils::snprintf(lsago,sizeof(lsago),"%lld",(long long)((_lastSent != 0) ? (now - _lastSent) : -1)); |
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Utils::snprintf(lrago,sizeof(lrago),"%lld",(long long)((_lastReceived != 0) ? (now - _lastReceived) : -1)); |
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Utils::snprintf(lfoago,sizeof(lfoago),"%lld",(long long)((_lastFirewallOpener != 0) ? (now - _lastFirewallOpener) : -1)); |
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Utils::snprintf(lpago,sizeof(lfoago),"%lld",(long long)((_lastPing != 0) ? (now - _lastPing) : -1)); |
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return (std::string(_tcp ? "tcp:" : "udp:") + _addr.toString() + "[" + lsago + "," lrago + "," + lpago + "," + lfoago + "," + (active(now) ? "active" : "inactive") + "," + (_fixed ? "fixed" : "learned") + "]"); |
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} |
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inline operator==(const Path &p) const throw() { return ((_addr == p._addr)&&(_tcp == p._tcp)); } |
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inline operator!=(const Path &p) const throw() { return ((_addr != p._addr)||(_tcp != p._tcp)); } |
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inline operator<(const Path &p) const |
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throw() |
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{ |
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if (_addr == p._addr) { |
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if (!_tcp) // UDP < TCP
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return p._tcp; |
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return false; |
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} else return (_addr < p._addr); |
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} |
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inline bool operator>(const Path &p) const throw() { return (p < *this); } |
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inline bool operator<=(const Path &p) const throw() { return !(p < *this); } |
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inline bool operator>=(const Path &p) const throw() { return !(*this < p); } |
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private: |
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volatile uint64_t _lastSent; |
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volatile uint64_t _lastReceived; |
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volatile uint64_t _lastFirewallOpener; |
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volatile uint64_t _lastPing; |
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InetAddress _addr; |
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bool _tcp; |
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bool _fixed; |
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}; |
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} // namespace ZeroTier
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#endif |
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