blob: b29c5128f8c33d4289bb6063f3f761a008023fb7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
/*
* ZeroTier One - Network Virtualization Everywhere
* Copyright (C) 2011-2015 ZeroTier, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* --
*
* ZeroTier may be used and distributed under the terms of the GPLv3, which
* are available at: http://www.gnu.org/licenses/gpl-3.0.html
*
* If you would like to embed ZeroTier into a commercial application or
* redistribute it in a modified binary form, please contact ZeroTier Networks
* LLC. Start here: http://www.zerotier.com/
*/
#ifndef ZT_EXTERNALSURFACE_HPP
#define ZT_EXTERNALSURFACE_HPP
#include "InetAddress.hpp"
namespace ZeroTier {
/**
* Tracks changes to this peer's real world addresses
*/
class ExternalSurface
{
public:
ExternalSurface() {}
/**
* Revise our external surface image, return true if it changed
*
* @param remote Remote address as reflected by any trusted peer
* @return True if our external surface has changed
*/
inline bool update(const InetAddress &remote)
throw()
{
const unsigned long idx = (remote.isV4() ? 0 : 2) | (remote.isLinkLocal() ? 1 : 0);
if (_s[idx] != remote) {
_s[idx] = remote;
return true;
}
return false;
}
private:
InetAddress _s[4]; // global v4, link-local v4, global v6, link-local v6
};
} // namespace ZeroTier
#endif
|
