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
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
/*
* 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_REMOTEPATH_HPP
#define ZT_REMOTEPATH_HPP
#include <stdint.h>
#include <string.h>
#include <stdexcept>
#include <algorithm>
#include "Path.hpp"
#include "Node.hpp"
#include "AntiRecursion.hpp"
#include "RuntimeEnvironment.hpp"
namespace ZeroTier {
/**
* Path to a remote peer
*
* This extends Path to include status information about path activity.
*/
class RemotePath : public Path
{
public:
RemotePath() :
Path(),
_lastSend(0),
_lastReceived(0),
_fixed(false) {}
RemotePath(const InetAddress &addr,bool fixed) :
Path(addr,0,TRUST_NORMAL,false),
_lastSend(0),
_lastReceived(0),
_fixed(fixed) {}
inline uint64_t lastSend() const throw() { return _lastSend; }
inline uint64_t lastReceived() const throw() { return _lastReceived; }
/**
* @return Is this a fixed path?
*/
inline bool fixed() const throw() { return _fixed; }
/**
* @param f New value of fixed flag
*/
inline void setFixed(const bool f)
throw()
{
_fixed = f;
}
/**
* Called when a packet is sent to this remote path
*
* This is called automatically by RemotePath::send().
*
* @param t Time of send
*/
inline void sent(uint64_t t)
throw()
{
_lastSend = t;
}
/**
* Called when a packet is received from this remote path
*
* @param t Time of receive
*/
inline void received(uint64_t t)
throw()
{
_lastReceived = t;
}
/**
* @param now Current time
* @return True if this path is fixed or has received data in last ACTIVITY_TIMEOUT ms
*/
inline bool active(uint64_t now) const
throw()
{
return ( (_fixed) || ((now - _lastReceived) < ZT_PEER_ACTIVITY_TIMEOUT) );
}
/**
* Send a packet via this path
*
* @param RR Runtime environment
* @param data Packet data
* @param len Packet length
* @param now Current time
* @return True if transport reported success
*/
inline bool send(const RuntimeEnvironment *RR,const void *data,unsigned int len,uint64_t now)
{
if (RR->node->putPacket(_addr,data,len)) {
sent(now);
RR->antiRec->logOutgoingZT(data,len);
return true;
}
return false;
}
private:
uint64_t _lastSend;
uint64_t _lastReceived;
bool _fixed;
};
} // namespace ZeroTier
#endif
|
