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-rw-r--r--src/transport/plugin_transport_xu.h273
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diff --git a/src/transport/plugin_transport_xu.h b/src/transport/plugin_transport_xu.h
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1/*
2 This file is part of GNUnet
3 Copyright (C) 2010-2014 GNUnet e.V.
4
5 GNUnet is free software: you can redistribute it and/or modify it
6 under the terms of the GNU Affero General Public License as published
7 by the Free Software Foundation, either version 3 of the License,
8 or (at your option) any later version.
9
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Affero General Public License for more details.
14
15 You should have received a copy of the GNU Affero General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
17
18 SPDX-License-Identifier: AGPL3.0-or-later
19*/
20
21/**
22 * @file transport/plugin_transport_xu.h
23 * @brief Implementation of the XU transport protocol
24 * @author Christian Grothoff
25 * @author Nathan Evans
26 * @author Matthias Wachs
27 */
28#ifndef PLUGIN_TRANSPORT_XU_H
29#define PLUGIN_TRANSPORT_XU_H
30
31#include "platform.h"
32#include "gnunet_hello_lib.h"
33#include "gnunet_util_lib.h"
34#include "gnunet_fragmentation_lib.h"
35#include "gnunet_protocols.h"
36#include "gnunet_resolver_service.h"
37#include "gnunet_signatures.h"
38#include "gnunet_constants.h"
39#include "gnunet_statistics_service.h"
40#include "gnunet_transport_service.h"
41#include "gnunet_transport_plugin.h"
42#include "transport.h"
43
44#define LOG(kind,...) GNUNET_log_from (kind, "transport-xu", __VA_ARGS__)
45
46#define PLUGIN_NAME "xu"
47
48#define DEBUG_XU GNUNET_NO
49
50#define DEBUG_XU_BROADCASTING GNUNET_NO
51
52/**
53 * MTU for fragmentation subsystem. Should be conservative since
54 * all communicating peers MUST work with this MTU.
55 */
56#define XU_MTU 1400
57
58
59GNUNET_NETWORK_STRUCT_BEGIN
60/**
61 * Network format for IPv4 addresses.
62 */
63struct IPv4XuAddress
64{
65 /**
66 * Optional options and flags for this address
67 */
68 uint32_t options GNUNET_PACKED;
69
70 /**
71 * IPv4 address, in network byte order.
72 */
73 uint32_t ipv4_addr GNUNET_PACKED;
74
75 /**
76 * Port number, in network byte order.
77 */
78 uint16_t u4_port GNUNET_PACKED;
79};
80
81
82/**
83 * Network format for IPv6 addresses.
84 */
85struct IPv6XuAddress
86{
87 /**
88 * Optional options and flags for this address
89 */
90 uint32_t options GNUNET_PACKED;
91
92 /**
93 * IPv6 address.
94 */
95 struct in6_addr ipv6_addr GNUNET_PACKED;
96
97 /**
98 * Port number, in network byte order.
99 */
100 uint16_t u6_port GNUNET_PACKED;
101};
102GNUNET_NETWORK_STRUCT_END
103
104/**
105 * Either an IPv4 or IPv6 XU address. Note that without a "length",
106 * one cannot tell which one of the two types this address represents.
107 */
108union XuAddress
109{
110 /**
111 * IPv4 case.
112 */
113 struct IPv4XuAddress v4;
114
115 /**
116 * IPv6 case.
117 */
118 struct IPv6XuAddress v6;
119};
120
121
122/**
123 * Information we track for each message in the queue.
124 */
125struct XU_MessageWrapper;
126
127
128/**
129 * Closure for #append_port().
130 */
131struct PrettyPrinterContext;
132
133
134/**
135 * Encapsulation of all of the state of the plugin.
136 */
137struct Plugin
138{
139
140 /**
141 * Our environment.
142 */
143 struct GNUNET_TRANSPORT_PluginEnvironment *env;
144
145 /**
146 * Session of peers with whom we are currently connected,
147 * map of peer identity to `struct GNUNET_ATS_Session *`.
148 */
149 struct GNUNET_CONTAINER_MultiPeerMap *sessions;
150
151 /**
152 * ID of select task for IPv4
153 */
154 struct GNUNET_SCHEDULER_Task *select_task_v4;
155
156 /**
157 * ID of select task for IPv6
158 */
159 struct GNUNET_SCHEDULER_Task *select_task_v6;
160
161 /**
162 * Address we were told to bind to exclusively (IPv4).
163 */
164 char *bind4_address;
165
166 /**
167 * Address we were told to bind to exclusively (IPv6).
168 */
169 char *bind6_address;
170
171 /**
172 * Handle to NAT traversal support.
173 */
174 struct GNUNET_NAT_Handle *nat;
175
176 /**
177 * Handle to NAT traversal support.
178 */
179 struct GNUNET_NAT_STUN_Handle *stun;
180
181 /**
182 * The read socket for IPv4
183 */
184 struct GNUNET_NETWORK_Handle *sockv4;
185
186 /**
187 * The read socket for IPv6
188 */
189 struct GNUNET_NETWORK_Handle *sockv6;
190
191 /**
192 * Running pretty printers: head
193 */
194 struct PrettyPrinterContext *ppc_dll_head;
195
196 /**
197 * Running pretty printers: tail
198 */
199 struct PrettyPrinterContext *ppc_dll_tail;
200
201 /**
202 * Function to call about session status changes.
203 */
204 GNUNET_TRANSPORT_SessionInfoCallback sic;
205
206 /**
207 * Closure for @e sic.
208 */
209 void *sic_cls;
210
211 /**
212 * IPv6 multicast address
213 */
214 struct sockaddr_in6 ipv6_multicast_address;
215
216 /**
217 * Broadcast interval
218 */
219 struct GNUNET_TIME_Relative broadcast_interval;
220
221 /**
222 * Bytes currently in buffer
223 */
224 int64_t bytes_in_buffer;
225
226 /**
227 * Address options
228 */
229 uint32_t myoptions;
230
231 /**
232 * Is IPv6 enabled: #GNUNET_YES or #GNUNET_NO
233 */
234 int enable_ipv6;
235
236 /**
237 * Is IPv4 enabled: #GNUNET_YES or #GNUNET_NO
238 */
239 int enable_ipv4;
240
241 /**
242 * Port we listen on.
243 */
244 uint16_t port;
245
246 /**
247 * Port we advertise on.
248 */
249 uint16_t aport;
250
251};
252
253
254/**
255 * Function called for a quick conversion of the binary address to
256 * a numeric address. Note that the caller must not free the
257 * address and that the next call to this function is allowed
258 * to override the address again.
259 *
260 * @param cls closure
261 * @param addr binary address (a `union XuAddress`)
262 * @param addrlen length of the @a addr
263 * @return string representing the same address
264 */
265const char *
266xu_address_to_string (void *cls,
267 const void *addr,
268 size_t addrlen);
269
270
271/*#ifndef PLUGIN_TRANSPORT_XU_H*/
272#endif
273/* end of plugin_transport_xu.h */
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