mirror of
https://github.com/zerotier/ZeroTierOne.git
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64 lines
1.6 KiB
C++
64 lines
1.6 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*
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* (c) ZeroTier, Inc.
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* https://www.zerotier.com/
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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/InetAddress.hpp"
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#include "../node/MAC.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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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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_NDEntry() : lastQuerySent(0), lastResponseReceived(0), mac(), local(false)
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{
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}
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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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