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
|
/*
This file is part of GNUnet.
(C) 2009, 2010, 2011 Christian Grothoff (and other contributing authors)
GNUnet 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, or (at your
option) any later version.
GNUnet 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 GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file dht/gnunet-service-dht_nse.c
* @brief GNUnet DHT integration with NSE
* @author Christian Grothoff
*/
#include "gnunet-service-dht.h"
#include "gnunet-service-dht_nse.h"
/**
* log of the current network size estimate, used as the point where
* we switch between random and deterministic routing. Default
* value of 4.0 is used if NSE module is not available (i.e. not
* configured).
*/
static double log_of_network_size_estimate = 4.0;
/**
* Network size estimation handle.
*/
static struct GNUNET_NSE_Handle *nse;
/**
* Callback that is called when network size estimate is updated.
*
* @param cls closure
* @param timestamp time when the estimate was received from the server (or created by the server)
* @param logestimate the log(Base 2) value of the current network size estimate
* @param std_dev standard deviation for the estimate
*
*/
static void
update_network_size_estimate (void *cls, struct GNUNET_TIME_Absolute timestamp,
double logestimate, double std_dev)
{
log_of_network_size_estimate = logestimate;
}
double
GDS_nse_get ()
{
return log_of_network_size_estimate;
}
void
GDS_nse_init ()
{
nse = GNUNET_NSE_connect (GDS_cfg, &update_network_size_estimate, NULL);
}
void
GDS_nse_done ()
{
if (NULL != nse)
{
GNUNET_NSE_disconnect (nse);
nse = NULL;
}
}
/* end of gnunet-service-dht_nse.c */
|
