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authorChristian Grothoff <christian@grothoff.org>2016-07-30 17:46:52 +0000
committerChristian Grothoff <christian@grothoff.org>2016-07-30 17:46:52 +0000
commit38e7ff9a88f530803cd2514c5823f02642827d1f (patch)
tree40645107b829b59789228f7d025839e35622571e /src/transport
parent40826ec2467ee0e6e4b89c0d073aebf5af99099c (diff)
downloadgnunet-38e7ff9a88f530803cd2514c5823f02642827d1f.tar.gz
gnunet-38e7ff9a88f530803cd2514c5823f02642827d1f.zip
remove now obsolete get_hello-API
Diffstat (limited to 'src/transport')
-rw-r--r--src/transport/Makefile.am1
-rw-r--r--src/transport/transport_api_get_hello.c268
2 files changed, 0 insertions, 269 deletions
diff --git a/src/transport/Makefile.am b/src/transport/Makefile.am
index 6ba7d881b..2d79ae534 100644
--- a/src/transport/Makefile.am
+++ b/src/transport/Makefile.am
@@ -170,7 +170,6 @@ libgnunettransport_la_SOURCES = \
170 transport_api_address_to_string.c \ 170 transport_api_address_to_string.c \
171 transport_api_blacklist.c \ 171 transport_api_blacklist.c \
172 transport_api_core.c \ 172 transport_api_core.c \
173 transport_api_get_hello.c \
174 transport_api_hello_get.c \ 173 transport_api_hello_get.c \
175 transport_api_manipulation.c \ 174 transport_api_manipulation.c \
176 transport_api_monitor_peers.c \ 175 transport_api_monitor_peers.c \
diff --git a/src/transport/transport_api_get_hello.c b/src/transport/transport_api_get_hello.c
deleted file mode 100644
index 28f6c9d7b..000000000
--- a/src/transport/transport_api_get_hello.c
+++ /dev/null
@@ -1,268 +0,0 @@
1/*
2 This file is part of GNUnet.
3 Copyright (C) 2009-2013, 2016 GNUnet e.V.
4
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 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 General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 Boston, MA 02110-1301, USA.
19*/
20
21/**
22 * @file transport/transport_api_get_hello.c
23 * @brief library to obtain our HELLO from our transport service
24 * @author Christian Grothoff
25 */
26#include "platform.h"
27#include "gnunet_util_lib.h"
28#include "gnunet_constants.h"
29#include "gnunet_arm_service.h"
30#include "gnunet_hello_lib.h"
31#include "gnunet_protocols.h"
32#include "gnunet_transport_service.h"
33#include "transport.h"
34
35
36/**
37 * Functions to call with this peer's HELLO.
38 */
39struct GNUNET_TRANSPORT_GetHelloHandle
40{
41
42 /**
43 * Our configuration.
44 */
45 const struct GNUNET_CONFIGURATION_Handle *cfg;
46
47 /**
48 * Transport handle.
49 */
50 struct GNUNET_MQ_Handle *mq;
51
52 /**
53 * Callback to call once we got our HELLO.
54 */
55 GNUNET_TRANSPORT_HelloUpdateCallback rec;
56
57 /**
58 * Closure for @e rec.
59 */
60 void *rec_cls;
61
62 /**
63 * Task for calling the HelloUpdateCallback when we already have a HELLO
64 */
65 struct GNUNET_SCHEDULER_Task *notify_task;
66
67 /**
68 * ID of the task trying to reconnect to the service.
69 */
70 struct GNUNET_SCHEDULER_Task *reconnect_task;
71
72 /**
73 * Delay until we try to reconnect.
74 */
75 struct GNUNET_TIME_Relative reconnect_delay;
76
77};
78
79
80/**
81 * Function we use for checking incoming HELLO messages.
82 *
83 * @param cls closure, a `struct GNUNET_TRANSPORT_Handle *`
84 * @param msg message received
85 * @return #GNUNET_OK if message is well-formed
86 */
87static int
88check_hello (void *cls,
89 const struct GNUNET_MessageHeader *msg)
90{
91 struct GNUNET_PeerIdentity me;
92
93 if (GNUNET_OK !=
94 GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *) msg,
95 &me))
96 {
97 GNUNET_break (0);
98 return GNUNET_SYSERR;
99 }
100 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
101 "Receiving (my own) HELLO message (%u bytes), I am `%s'.\n",
102 (unsigned int) ntohs (msg->size),
103 GNUNET_i2s (&me));
104 return GNUNET_OK;
105}
106
107
108/**
109 * Function we use for handling incoming HELLO messages.
110 *
111 * @param cls closure, a `struct GNUNET_TRANSPORT_GetHelloHandle *`
112 * @param msg message received
113 */
114static void
115handle_hello (void *cls,
116 const struct GNUNET_MessageHeader *msg)
117{
118 struct GNUNET_TRANSPORT_GetHelloHandle *ghh = cls;
119
120 ghh->rec (ghh->rec_cls,
121 msg);
122}
123
124
125/**
126 * Function that will schedule the job that will try
127 * to connect us again to the client.
128 *
129 * @param ghh transport service to reconnect
130 */
131static void
132schedule_reconnect (struct GNUNET_TRANSPORT_GetHelloHandle *ghh);
133
134
135/**
136 * Generic error handler, called with the appropriate
137 * error code and the same closure specified at the creation of
138 * the message queue.
139 * Not every message queue implementation supports an error handler.
140 *
141 * @param cls closure with the `struct GNUNET_TRANSPORT_Handle *`
142 * @param error error code
143 */
144static void
145mq_error_handler (void *cls,
146 enum GNUNET_MQ_Error error)
147{
148 struct GNUNET_TRANSPORT_GetHelloHandle *ghh = cls;
149
150 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
151 "Error receiving from transport service, disconnecting temporarily.\n");
152 GNUNET_MQ_destroy (ghh->mq);
153 ghh->mq = NULL;
154 schedule_reconnect (ghh);
155}
156
157
158/**
159 * Try again to connect to transport service.
160 *
161 * @param cls the handle to the transport service
162 */
163static void
164reconnect (void *cls)
165{
166 GNUNET_MQ_hd_var_size (hello,
167 GNUNET_MESSAGE_TYPE_HELLO,
168 struct GNUNET_MessageHeader);
169 struct GNUNET_TRANSPORT_GetHelloHandle *ghh = cls;
170 struct GNUNET_MQ_MessageHandler handlers[] = {
171 make_hello_handler (ghh),
172 GNUNET_MQ_handler_end ()
173 };
174 struct GNUNET_MQ_Envelope *env;
175 struct StartMessage *s;
176
177 ghh->reconnect_task = NULL;
178 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
179 "Connecting to transport service.\n");
180 GNUNET_assert (NULL == ghh->mq);
181 ghh->mq = GNUNET_CLIENT_connecT (ghh->cfg,
182 "transport",
183 handlers,
184 &mq_error_handler,
185 ghh);
186 if (NULL == ghh->mq)
187 return;
188 env = GNUNET_MQ_msg (s,
189 GNUNET_MESSAGE_TYPE_TRANSPORT_START);
190 s->options = htonl (0);
191 GNUNET_MQ_send (ghh->mq,
192 env);
193}
194
195
196/**
197 * Function that will schedule the job that will try
198 * to connect us again to the client.
199 *
200 * @param ghh transport service to reconnect
201 */
202static void
203schedule_reconnect (struct GNUNET_TRANSPORT_GetHelloHandle *ghh)
204{
205 ghh->reconnect_task =
206 GNUNET_SCHEDULER_add_delayed (ghh->reconnect_delay,
207 &reconnect,
208 ghh);
209 ghh->reconnect_delay = GNUNET_TIME_STD_BACKOFF (ghh->reconnect_delay);
210}
211
212
213/**
214 * Obtain the HELLO message for this peer. The callback given in this function
215 * is never called synchronously.
216 *
217 * @param cfg configuration
218 * @param rec function to call with the HELLO, sender will be our peer
219 * identity; message and sender will be NULL on timeout
220 * (handshake with transport service pending/failed).
221 * cost estimate will be 0.
222 * @param rec_cls closure for @a rec
223 * @return handle to cancel the operation
224 */
225struct GNUNET_TRANSPORT_GetHelloHandle *
226GNUNET_TRANSPORT_get_hello (const struct GNUNET_CONFIGURATION_Handle *cfg,
227 GNUNET_TRANSPORT_HelloUpdateCallback rec,
228 void *rec_cls)
229{
230 struct GNUNET_TRANSPORT_GetHelloHandle *ghh;
231
232 ghh = GNUNET_new (struct GNUNET_TRANSPORT_GetHelloHandle);
233 ghh->rec = rec;
234 ghh->rec_cls = rec_cls;
235 ghh->cfg = cfg;
236 reconnect (ghh);
237 if (NULL == ghh->mq)
238 {
239 GNUNET_free (ghh);
240 return NULL;
241 }
242 return ghh;
243}
244
245
246/**
247 * Stop receiving updates about changes to our HELLO message.
248 *
249 * @param ghh handle to cancel
250 */
251void
252GNUNET_TRANSPORT_get_hello_cancel (struct GNUNET_TRANSPORT_GetHelloHandle *ghh)
253{
254 if (NULL != ghh->reconnect_task)
255 {
256 GNUNET_SCHEDULER_cancel (ghh->reconnect_task);
257 ghh->reconnect_task = NULL;
258 }
259 if (NULL != ghh->mq)
260 {
261 GNUNET_MQ_destroy (ghh->mq);
262 ghh->mq = NULL;
263 }
264 GNUNET_free (ghh);
265}
266
267
268/* end of transport_api_get_hello.c */