blob: 3692faec12cd4d8f5c77d4191c9d21d2c2f12c34 (
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
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
/*
This file is part of GNUnet.
Copyright (C) 2009, 2010, 2011, 2016 GNUnet e.V.
GNUnet is free software: you can redistribute it and/or modify it
under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License,
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
Affero General Public License for more details.
*/
/**
* @file nat/gnunet-service-nat_helper.h
* @brief runs the gnunet-helper-nat-server
* @author Milan Bouchet-Valat
* @author Christian Grothoff
*/
#include "platform.h"
#include "gnunet_util_lib.h"
/**
* Information we keep per NAT helper process.
*/
struct HelperContext;
/**
* Function called whenever we get a connection reversal
* request from another peer.
*
* @param cls closure
* @param ra IP address of the peer who wants us to connect to it
*/
typedef void
(*GN_ReversalCallback) (void *cls,
const struct sockaddr_in *ra);
/**
* Start the gnunet-helper-nat-server and process incoming
* requests.
*
* @param internal_address
* @param cb function to call if we receive a request
* @param cb_cls closure for @a cb
* @return NULL on error
*/
struct HelperContext *
GN_start_gnunet_nat_server_ (const struct in_addr *internal_address,
GN_ReversalCallback cb,
void *cb_cls);
/**
* Start the gnunet-helper-nat-server and process incoming
* requests.
*
* @param h helper context to stop
*/
void
GN_stop_gnunet_nat_server_ (struct HelperContext *h);
/**
* We want to connect to a peer that is behind NAT. Run the
* gnunet-helper-nat-client to send dummy ICMP responses to cause
* that peer to connect to us (connection reversal).
*
* @param internal_address out internal address to use
* @param internal_port internal port to use
* @param remote_v4 the address of the peer (IPv4-only)
* @return #GNUNET_SYSERR on error,
* #GNUNET_OK otherwise
*/
int
GN_request_connection_reversal (const struct in_addr *internal_address,
uint16_t internal_port,
const struct in_addr *sa);
/* end of gnunet-service-nat_helper.h */
|
