mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-28 16:58:51 +00:00
148 lines
3.4 KiB
C++
148 lines
3.4 KiB
C++
/*
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* ZeroTier One - Network Virtualization Everywhere
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* Copyright (C) 2011-2015 ZeroTier, Inc.
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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_REMOTEPATH_HPP
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#define ZT_REMOTEPATH_HPP
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#include <stdint.h>
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#include <string.h>
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#include <stdexcept>
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#include <algorithm>
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#include "Path.hpp"
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#include "Node.hpp"
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#include "AntiRecursion.hpp"
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#include "RuntimeEnvironment.hpp"
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namespace ZeroTier {
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/**
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* Path to a remote peer
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*
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* This extends Path to include status information about path activity.
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*/
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class RemotePath : public Path
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{
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public:
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RemotePath() :
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Path(),
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_lastSend(0),
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_lastReceived(0),
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_localAddress(),
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_fixed(false) {}
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RemotePath(const InetAddress &localAddress,const InetAddress &addr,bool fixed) :
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Path(addr,0,TRUST_NORMAL),
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_lastSend(0),
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_lastReceived(0),
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_localAddress(localAddress),
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_fixed(fixed) {}
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inline const InetAddress &localAddress() const throw() { return _localAddress; }
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inline uint64_t lastSend() const throw() { return _lastSend; }
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inline uint64_t lastReceived() const throw() { return _lastReceived; }
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/**
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* @return Is this a fixed path?
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*/
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inline bool fixed() const throw() { return _fixed; }
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/**
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* @param f New value of fixed flag
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*/
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inline void setFixed(const bool f)
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throw()
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{
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_fixed = f;
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}
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/**
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* Called when a packet is sent to this remote path
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*
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* This is called automatically by RemotePath::send().
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*
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* @param t Time of send
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*/
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inline void sent(uint64_t t)
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throw()
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{
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_lastSend = t;
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}
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/**
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* Called when a packet is received from this remote path
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*
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* @param t Time of receive
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*/
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inline void received(uint64_t t)
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throw()
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{
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_lastReceived = t;
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}
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/**
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* @param now Current time
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* @return True if this path is fixed or has received data in last ACTIVITY_TIMEOUT ms
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*/
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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 ( (_fixed) || ((now - _lastReceived) < ZT_PEER_ACTIVITY_TIMEOUT) );
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}
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/**
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* Send a packet via this path
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*
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* @param RR Runtime environment
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* @param data Packet data
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* @param len Packet length
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* @param now Current time
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* @return True if transport reported success
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*/
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inline bool send(const RuntimeEnvironment *RR,const void *data,unsigned int len,uint64_t now)
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{
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if (RR->node->putPacket(_localAddress,address(),data,len)) {
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sent(now);
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RR->antiRec->logOutgoingZT(data,len);
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return true;
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}
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return false;
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}
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private:
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uint64_t _lastSend;
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uint64_t _lastReceived;
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InetAddress _localAddress;
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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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