2 This file is part of GNUnet
3 (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Christian Grothoff (and other contributing authors)
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.
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.
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., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file transport/plugin_transport_http_client.c
23 * @brief http transport service plugin
24 * @author Matthias Wachs
27 #include "plugin_transport_http.h"
31 * Function to log curl debug messages with GNUNET_log
33 * @param type curl_infotype
40 client_log (CURL * curl, curl_infotype type, char *data, size_t size, void *cls)
42 if (type == CURLINFO_TEXT)
46 memcpy (text, data, size);
47 if (text[size - 1] == '\n')
52 text[size + 1] = '\0';
54 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Client: %X - %s", cls, text);
61 client_send (struct Session *s, const char *msgbuf, size_t msgbuf_size)
67 * Task performing curl operations
68 * @param cls plugin as closure
69 * @param tc gnunet scheduler task context
72 client_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
75 * Function setting up file descriptors and scheduling task to run
77 * @param plugin plugin as closure
78 * @return GNUNET_SYSERR for hard failure, GNUNET_OK for ok
81 client_schedule (struct Plugin *plugin)
87 struct GNUNET_NETWORK_FDSet *grs;
88 struct GNUNET_NETWORK_FDSet *gws;
91 struct GNUNET_TIME_Relative timeout;
93 /* Cancel previous scheduled task */
94 if (plugin->client_perform_task!= GNUNET_SCHEDULER_NO_TASK)
96 GNUNET_SCHEDULER_cancel (plugin->client_perform_task);
97 plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
104 mret = curl_multi_fdset (plugin->client_mh, &rs, &ws, &es, &max);
105 if (mret != CURLM_OK)
107 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("%s failed at %s:%d: `%s'\n"),
108 "curl_multi_fdset", __FILE__, __LINE__,
109 curl_multi_strerror (mret));
110 return GNUNET_SYSERR;
112 mret = curl_multi_timeout (plugin->client_mh, &to);
114 timeout = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 5);
116 timeout = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, to);
117 if (mret != CURLM_OK)
119 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("%s failed at %s:%d: `%s'\n"),
120 "curl_multi_timeout", __FILE__, __LINE__,
121 curl_multi_strerror (mret));
122 return GNUNET_SYSERR;
125 grs = GNUNET_NETWORK_fdset_create ();
126 gws = GNUNET_NETWORK_fdset_create ();
127 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
128 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
129 plugin->client_perform_task =
130 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
131 GNUNET_SCHEDULER_NO_TASK,
137 GNUNET_NETWORK_fdset_destroy (gws);
138 GNUNET_NETWORK_fdset_destroy (grs);
144 * Task performing curl operations
145 * @param cls plugin as closure
146 * @param tc gnunet scheduler task context
149 client_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
151 struct Plugin *plugin = cls;
152 static unsigned int handles_last_run;
156 GNUNET_assert (cls != NULL);
158 plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
159 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
165 mret = curl_multi_perform (plugin->client_mh, &running);
169 while ((msg = curl_multi_info_read(plugin->client_mh, &msgs_left)))
171 CURL *easy_h = msg->easy_handle;
173 GNUNET_assert (easy_h != NULL);
175 GNUNET_assert (CURLE_OK == curl_easy_getinfo(easy_h, CURLINFO_PRIVATE, &s));
176 GNUNET_assert (s != NULL);
178 if (msg->msg == CURLMSG_DONE)
181 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
182 "Connection to '%s' %s ended\n", GNUNET_i2s(&s->target), http_plugin_address_to_string(s->plugin, s->addr, s->addrlen));
184 client_disconnect(s);
185 notify_session_end (s->plugin, &s->target, s);
189 handles_last_run = running;
191 while (mret == CURLM_CALL_MULTI_PERFORM);
192 client_schedule (plugin);
196 client_disconnect (struct Session *s)
200 struct Plugin *plugin = s->plugin;
203 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
204 "Deleting outbound PUT session to peer `%s'\n",
205 GNUNET_i2s (&s->target));
208 mret = curl_multi_remove_handle (plugin->client_mh, s->client_put);
209 if (mret != CURLM_OK)
211 curl_easy_cleanup (s->client_put);
215 curl_easy_cleanup (s->client_put);
218 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
219 "Deleting outbound GET session to peer `%s'\n",
220 GNUNET_i2s (&s->target));
223 mret = curl_multi_remove_handle (plugin->client_mh, s->client_get);
224 if (mret != CURLM_OK)
226 curl_easy_cleanup (s->client_get);
230 curl_easy_cleanup (s->client_get);
232 /* Re-schedule since handles have changed */
233 if (plugin->client_perform_task!= GNUNET_SCHEDULER_NO_TASK)
235 GNUNET_SCHEDULER_cancel (plugin->client_perform_task);
236 plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
239 plugin->client_perform_task = GNUNET_SCHEDULER_add_now(client_run, plugin);
246 client_connect (struct Session *s)
253 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
254 "Initiating outbound session peer `%s'\n",
255 GNUNET_i2s (&s->target));
258 s->inbound = GNUNET_NO;
261 GNUNET_asprintf (&url, "%s", http_plugin_address_to_string (s->plugin, s->addr, s->addrlen));
263 /* create get connection */
264 s->client_get = curl_easy_init ();
266 curl_easy_setopt (s->client_get, CURLOPT_VERBOSE, 1L);
267 curl_easy_setopt (s->client_get, CURLOPT_DEBUGFUNCTION, &client_log);
268 curl_easy_setopt (s->client_get, CURLOPT_DEBUGDATA, s->client_get);
271 curl_easy_setopt (s->client_get, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
272 curl_easy_setopt (s->client_get, CURLOPT_SSL_VERIFYPEER, 0);
273 curl_easy_setopt (s->client_get, CURLOPT_SSL_VERIFYHOST, 0);
275 curl_easy_setopt (s->client_get, CURLOPT_URL, url);
276 //curl_easy_setopt (s->client_get, CURLOPT_HEADERFUNCTION, &curl_get_header_cb);
277 //curl_easy_setopt (s->client_get, CURLOPT_WRITEHEADER, ps);
278 //curl_easy_setopt (s->client_get, CURLOPT_READFUNCTION, curl_send_cb);
279 //curl_easy_setopt (s->client_get, CURLOPT_READDATA, ps);
280 //curl_easy_setopt (s->client_get, CURLOPT_WRITEFUNCTION, curl_receive_cb);
281 //curl_easy_setopt (s->client_get, CURLOPT_WRITEDATA, ps);
282 curl_easy_setopt (s->client_get, CURLOPT_TIMEOUT_MS,
283 (long) GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
284 curl_easy_setopt (s->client_get, CURLOPT_PRIVATE, s);
285 curl_easy_setopt (s->client_get, CURLOPT_CONNECTTIMEOUT_MS,
286 (long) HTTP_NOT_VALIDATED_TIMEOUT.rel_value);
287 curl_easy_setopt (s->client_get, CURLOPT_BUFFERSIZE,
288 2 * GNUNET_SERVER_MAX_MESSAGE_SIZE);
290 curl_easy_setopt (ps->recv_endpoint, CURLOPT_TCP_NODELAY, 1);
293 /* create put connection */
294 s->client_put = curl_easy_init ();
296 curl_easy_setopt (s->client_put, CURLOPT_VERBOSE, 1L);
297 curl_easy_setopt (s->client_put, CURLOPT_DEBUGFUNCTION, &client_log);
298 curl_easy_setopt (s->client_put, CURLOPT_DEBUGDATA, s->client_put);
301 curl_easy_setopt (s->client_put, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
302 curl_easy_setopt (s->client_put, CURLOPT_SSL_VERIFYPEER, 0);
303 curl_easy_setopt (s->client_put, CURLOPT_SSL_VERIFYHOST, 0);
305 curl_easy_setopt (s->client_put, CURLOPT_URL, url);
306 curl_easy_setopt (s->client_put, CURLOPT_PUT, 1L);
307 //curl_easy_setopt (s->client_put, CURLOPT_HEADERFUNCTION, &curl_put_header_cb);
308 //curl_easy_setopt (s->client_put, CURLOPT_WRITEHEADER, ps);
309 //curl_easy_setopt (s->client_put, CURLOPT_READFUNCTION, curl_send_cb);
310 //curl_easy_setopt (s->client_put, CURLOPT_READDATA, ps);
311 //curl_easy_setopt (s->client_put, CURLOPT_WRITEFUNCTION, curl_receive_cb);
312 //curl_easy_setopt (s->client_put, CURLOPT_WRITEDATA, ps);
313 curl_easy_setopt (s->client_put, CURLOPT_TIMEOUT_MS,
314 (long) GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
315 curl_easy_setopt (s->client_put, CURLOPT_PRIVATE, s);
316 curl_easy_setopt (s->client_put, CURLOPT_CONNECTTIMEOUT_MS,
317 (long) HTTP_NOT_VALIDATED_TIMEOUT.rel_value);
318 curl_easy_setopt (s->client_put, CURLOPT_BUFFERSIZE,
319 2 * GNUNET_SERVER_MAX_MESSAGE_SIZE);
321 curl_easy_setopt (s->client_put, CURLOPT_TCP_NODELAY, 1);
326 mret = curl_multi_add_handle (s->plugin->client_mh, s->client_get);
327 if (mret != CURLM_OK)
329 curl_easy_cleanup (s->client_get);
334 mret = curl_multi_add_handle (s->plugin->client_mh, s->client_put);
335 if (mret != CURLM_OK)
337 curl_multi_remove_handle (s->plugin->client_mh, s->client_get);
338 curl_easy_cleanup (s->client_get);
339 curl_easy_cleanup (s->client_put);
344 /* Perform connect */
345 s->plugin->client_perform_task = GNUNET_SCHEDULER_add_now (client_run, s->plugin);
351 client_start (struct Plugin *plugin)
355 curl_global_init (CURL_GLOBAL_ALL);
356 plugin->client_mh = curl_multi_init ();
358 if (NULL == plugin->client_mh)
360 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
362 ("Could not initialize curl multi handle, failed to start %s plugin!\n"),
370 client_stop (struct Plugin *plugin)
372 if (plugin->client_perform_task != GNUNET_SCHEDULER_NO_TASK)
374 GNUNET_SCHEDULER_cancel (plugin->client_perform_task);
375 plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
378 curl_multi_cleanup (plugin->client_mh);
379 curl_global_cleanup ();
384 /* end of plugin_transport_http_client.c */