mirror of
https://github.com/didyouexpectthat/zerotierone.git
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77 lines
2.2 KiB
C++
77 lines
2.2 KiB
C++
/*
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* ZeroTier One - Network Virtualization Everywhere
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* Copyright (C) 2011-2016 ZeroTier, Inc. https://www.zerotier.com/
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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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#ifndef ZT_NEIGHBORDISCOVERY_HPP
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#define ZT_NEIGHBORDISCOVERY_HPP
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#include "../node/Hashtable.hpp"
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#include "../node/MAC.hpp"
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#include "../node/InetAddress.hpp"
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#define ZT_ND_QUERY_INTERVAL 2000
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#define ZT_ND_QUERY_MAX_TTL 5000
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#define ZT_ND_EXPIRE 600000
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namespace ZeroTier {
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class NeighborDiscovery
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{
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public:
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NeighborDiscovery();
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/**
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* Set a local IP entry that we should respond to Neighbor Requests withPrefix64k
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*
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* @param mac Our local MAC address
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* @param ip Our IPv6 address
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*/
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void addLocal(const sockaddr_storage &address, const MAC &mac);
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/**
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* Delete a local IP entry or cached Neighbor entry
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*
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* @param address IPv6 address to remove
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*/
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void remove(const sockaddr_storage &address);
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sockaddr_storage processIncomingND(const uint8_t *nd, unsigned int len, const sockaddr_storage &localIp, uint8_t *response, unsigned int &responseLen, MAC &responseDest);
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MAC query(const MAC &localMac, const sockaddr_storage &localIp, const sockaddr_storage &targetIp, uint8_t *query, unsigned int &queryLen, MAC &queryDest);
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private:
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struct _NDEntry
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{
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_NDEntry() : lastQuerySent(0), lastResponseReceived(0), mac(), local(false) {}
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uint64_t lastQuerySent;
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uint64_t lastResponseReceived;
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MAC mac;
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bool local;
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};
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Hashtable<InetAddress, _NDEntry> _cache;
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uint64_t _lastCleaned;
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};
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} // namespace ZeroTier
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#endif
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