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);
130 plugin->client_perform_task =
131 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
132 GNUNET_SCHEDULER_NO_TASK,
138 GNUNET_NETWORK_fdset_destroy (gws);
139 GNUNET_NETWORK_fdset_destroy (grs);
145 * Task performing curl operations
146 * @param cls plugin as closure
147 * @param tc gnunet scheduler task context
150 client_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
152 struct Plugin *plugin = cls;
153 static unsigned int handles_last_run;
157 GNUNET_assert (cls != NULL);
159 plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
160 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
166 mret = curl_multi_perform (plugin->client_mh, &running);
170 while ((msg = curl_multi_info_read(plugin->client_mh, &msgs_left)))
172 CURL *easy_h = msg->easy_handle;
174 GNUNET_assert (easy_h != NULL);
176 GNUNET_assert (CURLE_OK == curl_easy_getinfo(easy_h, CURLINFO_PRIVATE, &s));
177 GNUNET_assert (s != NULL);
179 if (msg->msg == CURLMSG_DONE)
182 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
183 "Connection to '%s' %s ended\n", GNUNET_i2s(&s->target), http_plugin_address_to_string(plugin, s->addr, s->addrlen));
185 client_disconnect(s);
186 notify_session_end (plugin, &s->target, s);
190 handles_last_run = running;
192 while (mret == CURLM_CALL_MULTI_PERFORM);
193 client_schedule (plugin);
197 client_disconnect (struct Session *s)
201 struct Plugin *plugin = plugin;
204 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
205 "Deleting outbound PUT session to peer `%s'\n",
206 GNUNET_i2s (&s->target));
209 if (s->client_put != NULL)
211 mret = curl_multi_remove_handle (plugin->client_mh, s->client_put);
212 if (mret != CURLM_OK)
214 curl_easy_cleanup (s->client_put);
218 curl_easy_cleanup (s->client_put);
219 s->client_put = NULL;
223 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
224 "Deleting outbound GET session to peer `%s'\n",
225 GNUNET_i2s (&s->target));
228 if (s->client_get != NULL)
230 mret = curl_multi_remove_handle (plugin->client_mh, s->client_get);
231 if (mret != CURLM_OK)
233 curl_easy_cleanup (s->client_get);
237 curl_easy_cleanup (s->client_get);
238 s->client_get = NULL;
241 plugin->cur_connections -= 2;
243 /* Re-schedule since handles have changed */
244 if (plugin->client_perform_task!= GNUNET_SCHEDULER_NO_TASK)
246 GNUNET_SCHEDULER_cancel (plugin->client_perform_task);
247 plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
249 plugin->client_perform_task = GNUNET_SCHEDULER_add_now(client_run, plugin);
256 client_connect (struct Session *s)
258 struct Plugin *plugin = s->plugin;
264 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
265 "Initiating outbound session peer `%s'\n",
266 GNUNET_i2s (&s->target));
269 s->inbound = GNUNET_NO;
273 GNUNET_asprintf (&url, "%s%s;%u", http_plugin_address_to_string (plugin, s->addr, s->addrlen), GNUNET_h2s_full (&plugin->env->my_identity->hashPubKey),plugin->last_tag);
275 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
279 /* create get connection */
280 s->client_get = curl_easy_init ();
282 curl_easy_setopt (s->client_get, CURLOPT_VERBOSE, 1L);
283 curl_easy_setopt (s->client_get, CURLOPT_DEBUGFUNCTION, &client_log);
284 curl_easy_setopt (s->client_get, CURLOPT_DEBUGDATA, s->client_get);
287 curl_easy_setopt (s->client_get, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
288 curl_easy_setopt (s->client_get, CURLOPT_SSL_VERIFYPEER, 0);
289 curl_easy_setopt (s->client_get, CURLOPT_SSL_VERIFYHOST, 0);
291 curl_easy_setopt (s->client_get, CURLOPT_URL, url);
292 //curl_easy_setopt (s->client_get, CURLOPT_HEADERFUNCTION, &curl_get_header_cb);
293 //curl_easy_setopt (s->client_get, CURLOPT_WRITEHEADER, ps);
294 //curl_easy_setopt (s->client_get, CURLOPT_READFUNCTION, curl_send_cb);
295 //curl_easy_setopt (s->client_get, CURLOPT_READDATA, ps);
296 //curl_easy_setopt (s->client_get, CURLOPT_WRITEFUNCTION, curl_receive_cb);
297 //curl_easy_setopt (s->client_get, CURLOPT_WRITEDATA, ps);
298 curl_easy_setopt (s->client_get, CURLOPT_TIMEOUT_MS,
299 (long) GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
300 curl_easy_setopt (s->client_get, CURLOPT_PRIVATE, s);
301 curl_easy_setopt (s->client_get, CURLOPT_CONNECTTIMEOUT_MS,
302 (long) HTTP_NOT_VALIDATED_TIMEOUT.rel_value);
303 curl_easy_setopt (s->client_get, CURLOPT_BUFFERSIZE,
304 2 * GNUNET_SERVER_MAX_MESSAGE_SIZE);
306 curl_easy_setopt (ps->recv_endpoint, CURLOPT_TCP_NODELAY, 1);
309 /* create put connection */
310 s->client_put = curl_easy_init ();
312 curl_easy_setopt (s->client_put, CURLOPT_VERBOSE, 1L);
313 curl_easy_setopt (s->client_put, CURLOPT_DEBUGFUNCTION, &client_log);
314 curl_easy_setopt (s->client_put, CURLOPT_DEBUGDATA, s->client_put);
317 curl_easy_setopt (s->client_put, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
318 curl_easy_setopt (s->client_put, CURLOPT_SSL_VERIFYPEER, 0);
319 curl_easy_setopt (s->client_put, CURLOPT_SSL_VERIFYHOST, 0);
321 curl_easy_setopt (s->client_put, CURLOPT_URL, url);
322 curl_easy_setopt (s->client_put, CURLOPT_PUT, 1L);
323 //curl_easy_setopt (s->client_put, CURLOPT_HEADERFUNCTION, &curl_put_header_cb);
324 //curl_easy_setopt (s->client_put, CURLOPT_WRITEHEADER, ps);
325 //curl_easy_setopt (s->client_put, CURLOPT_READFUNCTION, curl_send_cb);
326 //curl_easy_setopt (s->client_put, CURLOPT_READDATA, ps);
327 //curl_easy_setopt (s->client_put, CURLOPT_WRITEFUNCTION, curl_receive_cb);
328 //curl_easy_setopt (s->client_put, CURLOPT_WRITEDATA, ps);
329 curl_easy_setopt (s->client_put, CURLOPT_TIMEOUT_MS,
330 (long) GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
331 curl_easy_setopt (s->client_put, CURLOPT_PRIVATE, s);
332 curl_easy_setopt (s->client_put, CURLOPT_CONNECTTIMEOUT_MS,
333 (long) HTTP_NOT_VALIDATED_TIMEOUT.rel_value);
334 curl_easy_setopt (s->client_put, CURLOPT_BUFFERSIZE,
335 2 * GNUNET_SERVER_MAX_MESSAGE_SIZE);
337 curl_easy_setopt (s->client_put, CURLOPT_TCP_NODELAY, 1);
342 mret = curl_multi_add_handle (plugin->client_mh, s->client_get);
343 if (mret != CURLM_OK)
345 curl_easy_cleanup (s->client_get);
350 mret = curl_multi_add_handle (plugin->client_mh, s->client_put);
351 if (mret != CURLM_OK)
353 curl_multi_remove_handle (plugin->client_mh, s->client_get);
354 curl_easy_cleanup (s->client_get);
355 curl_easy_cleanup (s->client_put);
360 /* Perform connect */
361 plugin->cur_connections += 2;
363 /* Re-schedule since handles have changed */
364 if (plugin->client_perform_task!= GNUNET_SCHEDULER_NO_TASK)
366 GNUNET_SCHEDULER_cancel (plugin->client_perform_task);
367 plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
369 plugin->client_perform_task = GNUNET_SCHEDULER_add_now (client_run, plugin);
375 client_start (struct Plugin *plugin)
379 curl_global_init (CURL_GLOBAL_ALL);
380 plugin->client_mh = curl_multi_init ();
382 if (NULL == plugin->client_mh)
384 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
386 ("Could not initialize curl multi handle, failed to start %s plugin!\n"),
394 client_stop (struct Plugin *plugin)
396 if (plugin->client_perform_task != GNUNET_SCHEDULER_NO_TASK)
398 GNUNET_SCHEDULER_cancel (plugin->client_perform_task);
399 plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
402 curl_multi_cleanup (plugin->client_mh);
403 curl_global_cleanup ();
408 /* end of plugin_transport_http_client.c */