2 This file is part of GNUnet
3 (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Christian Grothoff (and other contributing authors)
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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
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13 General Public License for more details.
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17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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22 * @file transport/plugin_transport_http_client.c
23 * @brief HTTP/S client transport plugin
24 * @author Matthias Wachs
28 #define LIBGNUNET_PLUGIN_TRANSPORT_INIT libgnunet_plugin_transport_https_client_init
29 #define LIBGNUNET_PLUGIN_TRANSPORT_DONE libgnunet_plugin_transport_https_client_done
31 #define LIBGNUNET_PLUGIN_TRANSPORT_INIT libgnunet_plugin_transport_http_client_init
32 #define LIBGNUNET_PLUGIN_TRANSPORT_DONE libgnunet_plugin_transport_http_client_done
35 #define VERBOSE_CURL GNUNET_YES
37 #define PUT_DISCONNECT_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 1)
39 #define ENABLE_PUT GNUNET_YES
40 #define ENABLE_GET GNUNET_YES
43 #include "gnunet_protocols.h"
44 #include "gnunet_common.h"
45 #include "gnunet_server_lib.h"
46 #include "gnunet_transport_plugin.h"
47 #include "plugin_transport_http_common.h"
48 #include <curl/curl.h>
53 * Encapsulation of all of the state of the plugin.
55 struct HTTP_Client_Plugin;
59 * Message to send using http
64 * next pointer for double linked list
66 struct HTTP_Message *next;
69 * previous pointer for double linked list
71 struct HTTP_Message *prev;
74 * buffer containing data to send
79 * amount of data already sent
89 * Continuation function to call once the transmission buffer
90 * has again space available. NULL if there is no
91 * continuation to call.
93 GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
96 * Closure for transmit_cont.
98 void *transmit_cont_cls;
103 * Session handle for connections.
107 struct ConnectionHandle
116 * Session handle for connections.
121 * To whom are we talking to (set to our identity
122 * if we are still waiting for the welcome message)
124 struct GNUNET_PeerIdentity target;
127 * Stored in a linked list.
129 struct Session *next;
132 * Stored in a linked list.
134 struct Session *prev;
137 * The URL to connect to
152 * ATS network type in NBO
154 uint32_t ats_address_network_type;
157 * Pointer to the global plugin struct.
159 struct HTTP_Client_Plugin *plugin;
166 struct ConnectionHandle put;
167 struct ConnectionHandle get;
170 * Is the client PUT handle currently paused
175 * Is the client PUT handle disconnect in progress?
177 int put_tmp_disconnecting;
180 * Is the client PUT handle temporarily disconnected?
182 int put_tmp_disconnected;
185 * We received data to send while disconnecting, reconnect immediately
187 int put_reconnect_required;
190 * Client receive handle
195 * Outbound overhead due to HTTP connection
196 * Add to next message of this session when calling callback
201 * next pointer for double linked list
203 struct HTTP_Message *msg_head;
206 * previous pointer for double linked list
208 struct HTTP_Message *msg_tail;
211 * Message stream tokenizer for incoming data
213 struct GNUNET_SERVER_MessageStreamTokenizer *msg_tk;
216 * Session timeout task
218 GNUNET_SCHEDULER_TaskIdentifier put_disconnect_task;
221 * Session timeout task
223 GNUNET_SCHEDULER_TaskIdentifier timeout_task;
226 * Task to wake up client receive handle when receiving is allowed again
228 GNUNET_SCHEDULER_TaskIdentifier recv_wakeup_task;
231 * Absolute time when to receive data again
232 * Used for receive throttling
234 struct GNUNET_TIME_Absolute next_receive;
239 * Encapsulation of all of the state of the plugin.
241 struct HTTP_Client_Plugin
246 struct GNUNET_TRANSPORT_PluginEnvironment *env;
249 * Linked list head of open sessions.
251 struct Session *head;
254 * Linked list tail of open sessions.
256 struct Session *tail;
269 * Maximum number of sockets the plugin can use
270 * Each http inbound /outbound connections are two connections
272 unsigned int max_connections;
275 * Current number of sockets the plugin can use
276 * Each http inbound /outbound connections are two connections
278 unsigned int cur_connections;
281 * Last used unique HTTP connection tag
298 CURLM *curl_multi_handle;
303 GNUNET_SCHEDULER_TaskIdentifier client_perform_task;
308 * Encapsulation of all of the state of the plugin.
310 struct HTTP_Client_Plugin *p;
314 * Start session timeout for a session
315 * @param s the session
318 client_start_session_timeout (struct Session *s);
322 * Increment session timeout due to activity for a session
323 * @param s the session
326 client_reschedule_session_timeout (struct Session *s);
330 * Cancel timeout for a session
331 * @param s the session
334 client_stop_session_timeout (struct Session *s);
338 * Function setting up file descriptors and scheduling task to run
340 * @param plugin plugin as closure
341 * @param now schedule task in 1ms, regardless of what curl may say
342 * @return GNUNET_SYSERR for hard failure, GNUNET_OK for ok
345 client_schedule (struct HTTP_Client_Plugin *plugin, int now);
348 client_connect_put (struct Session *s);
351 * Does a session s exists?
353 * @param plugin the plugin
354 * @param s desired session
355 * @return GNUNET_YES or GNUNET_NO
358 client_exist_session (struct HTTP_Client_Plugin *plugin, struct Session *s)
360 struct Session * head;
362 GNUNET_assert (NULL != plugin);
363 GNUNET_assert (NULL != s);
365 for (head = plugin->head; head != NULL; head = head->next)
376 * @param curl the curl easy handle
377 * @param type message type
378 * @param data data as a not \0-terminated string
379 * @param size data length
380 * @param cls the closure
384 client_log (CURL *curl, curl_infotype type, char *data, size_t size, void *cls)
386 struct ConnectionHandle *ch = cls;
387 char *ttype = "UNSPECIFIED";
388 if ((type == CURLINFO_TEXT) || (type == CURLINFO_HEADER_IN) || (type == CURLINFO_HEADER_OUT))
396 case CURLINFO_HEADER_IN:
399 case CURLINFO_HEADER_OUT:
400 ttype = "HEADER_OUT";
403 GNUNET_assert (NULL != ch);
404 GNUNET_assert (NULL != ch->easyhandle);
405 GNUNET_assert (NULL != ch->s);
406 ch->s->overhead += size;
409 ttype = "UNSPECIFIED";
414 memcpy (text, data, size);
415 if (text[size - 1] == '\n')
420 text[size + 1] = '\0';
423 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "transport-https_client",
424 "Connection %p %s: %s", ch->easyhandle, ttype, text);
426 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "transport-http_client",
427 "Connection %p %s: %s", ch->easyhandle, ttype, text);
436 * Function that can be used by the transport service to transmit
437 * a message using the plugin. Note that in the case of a
438 * peer disconnecting, the continuation MUST be called
439 * prior to the disconnect notification itself. This function
440 * will be called with this peer's HELLO message to initiate
441 * a fresh connection to another peer.
444 * @param s which session must be used
445 * @param msgbuf the message to transmit
446 * @param msgbuf_size number of bytes in 'msgbuf'
447 * @param priority how important is the message (most plugins will
448 * ignore message priority and just FIFO)
449 * @param to how long to wait at most for the transmission (does not
450 * require plugins to discard the message after the timeout,
451 * just advisory for the desired delay; most plugins will ignore
453 * @param cont continuation to call once the message has
454 * been transmitted (or if the transport is ready
455 * for the next transmission call; or if the
456 * peer disconnected...); can be NULL
457 * @param cont_cls closure for cont
458 * @return number of bytes used (on the physical network, with overheads);
459 * -1 on hard errors (i.e. address invalid); 0 is a legal value
460 * and does NOT mean that the message was not transmitted (DV)
463 http_client_plugin_send (void *cls,
465 const char *msgbuf, size_t msgbuf_size,
466 unsigned int priority,
467 struct GNUNET_TIME_Relative to,
468 GNUNET_TRANSPORT_TransmitContinuation cont,
471 struct HTTP_Client_Plugin *plugin = cls;
472 struct HTTP_Message *msg;
475 GNUNET_assert (plugin != NULL);
476 GNUNET_assert (s != NULL);
478 /* lookup if session is really existing */
479 if (GNUNET_YES != client_exist_session (plugin, s))
482 return GNUNET_SYSERR;
485 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
486 "Session %p/connection %p: Sending message with %u to peer `%s' \n",
488 msgbuf_size, GNUNET_i2s (&s->target));
490 /* create new message and schedule */
491 msg = GNUNET_malloc (sizeof (struct HTTP_Message) + msgbuf_size);
493 msg->size = msgbuf_size;
495 msg->buf = (char *) &msg[1];
496 msg->transmit_cont = cont;
497 msg->transmit_cont_cls = cont_cls;
498 memcpy (msg->buf, msgbuf, msgbuf_size);
499 GNUNET_CONTAINER_DLL_insert_tail (s->msg_head, s->msg_tail, msg);
501 GNUNET_asprintf (&stat_txt, "# bytes currently in %s_client buffers", plugin->protocol);
502 GNUNET_STATISTICS_update (plugin->env->stats,
503 stat_txt, msgbuf_size, GNUNET_NO);
505 GNUNET_free (stat_txt);
507 if (GNUNET_YES == s->put_tmp_disconnecting)
509 /* PUT connection is currently getting disconnected */
510 s->put_reconnect_required = GNUNET_YES;
511 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
512 "Session %p/connection %jp: currently disconnecting, reconnecting immediately\n",
516 else if (GNUNET_YES == s->put_paused)
518 /* PUT connection was paused, unpause */
519 GNUNET_assert (s->put_disconnect_task != GNUNET_SCHEDULER_NO_TASK);
520 GNUNET_SCHEDULER_cancel (s->put_disconnect_task);
521 s->put_disconnect_task = GNUNET_SCHEDULER_NO_TASK;
522 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
523 "Session %p/connection %p: unpausing connection\n",
525 s->put_paused = GNUNET_NO;
526 curl_easy_pause (s->client_put, CURLPAUSE_CONT);
528 else if (GNUNET_YES == s->put_tmp_disconnected)
530 /* PUT connection was disconnected, reconnect */
531 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
532 "Session %p: Reconnecting PUT connection\n",
534 s->put_tmp_disconnected = GNUNET_NO;
535 GNUNET_break (s->client_put == NULL);
536 if (GNUNET_SYSERR == client_connect_put (s))
538 return GNUNET_SYSERR;
542 client_schedule (s->plugin, GNUNET_YES);
543 client_reschedule_session_timeout (s);
551 * @param s the session to delete
554 client_delete_session (struct Session *s)
556 struct HTTP_Client_Plugin *plugin = s->plugin;
557 struct HTTP_Message *pos;
558 struct HTTP_Message *next;
560 client_stop_session_timeout (s);
562 if (GNUNET_SCHEDULER_NO_TASK != s->put_disconnect_task)
564 GNUNET_SCHEDULER_cancel (s->put_disconnect_task);
565 s->put_disconnect_task = GNUNET_SCHEDULER_NO_TASK;
568 GNUNET_CONTAINER_DLL_remove (plugin->head, plugin->tail, s);
571 while (NULL != (pos = next))
574 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, pos);
575 if (pos->transmit_cont != NULL)
576 pos->transmit_cont (pos->transmit_cont_cls, &s->target, GNUNET_SYSERR,
577 pos->size, pos->pos + s->overhead);
582 if (s->msg_tk != NULL)
584 GNUNET_SERVER_mst_destroy (s->msg_tk);
587 GNUNET_free (s->addr);
588 GNUNET_free (s->url);
595 * Disconnect a session
598 * @return GNUNET_OK on success, GNUNET_SYSERR on error
601 client_disconnect (struct Session *s)
603 struct HTTP_Client_Plugin *plugin = s->plugin;
604 struct HTTP_Message *msg;
605 struct HTTP_Message *t;
609 if (GNUNET_YES != client_exist_session (plugin, s))
612 return GNUNET_SYSERR;
615 if (s->client_put != NULL)
617 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
618 "Session %p/connection %p: disconnecting PUT connection to peer `%s'\n",
619 s, s->client_put, GNUNET_i2s (&s->target));
621 /* remove curl handle from multi handle */
622 mret = curl_multi_remove_handle (plugin->curl_multi_handle, s->client_put);
623 if (mret != CURLM_OK)
625 /* clean up easy handle, handle is now invalid and free'd */
629 curl_easy_cleanup (s->client_put);
630 s->client_put = NULL;
634 if (s->recv_wakeup_task != GNUNET_SCHEDULER_NO_TASK)
636 GNUNET_SCHEDULER_cancel (s->recv_wakeup_task);
637 s->recv_wakeup_task = GNUNET_SCHEDULER_NO_TASK;
640 if (s->client_get != NULL)
642 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
643 "Session %p/connection %p: disconnecting GET connection to peer `%s'\n",
644 s, s->client_get, GNUNET_i2s (&s->target));
646 /* remove curl handle from multi handle */
647 mret = curl_multi_remove_handle (plugin->curl_multi_handle, s->client_get);
648 if (mret != CURLM_OK)
650 /* clean up easy handle, handle is now invalid and free'd */
654 curl_easy_cleanup (s->client_get);
655 s->client_get = NULL;
662 if (NULL != msg->transmit_cont)
663 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_SYSERR,
664 msg->size, msg->pos + s->overhead);
666 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
671 GNUNET_assert (plugin->cur_connections >= 2);
672 plugin->cur_connections -= 2;
673 GNUNET_STATISTICS_set (plugin->env->stats,
674 "# HTTP client sessions",
675 plugin->cur_connections,
678 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
679 "Session %p: notifying transport about ending session\n",s);
681 plugin->env->session_end (plugin->env->cls, &s->target, s);
682 client_delete_session (s);
684 /* Re-schedule since handles have changed */
685 if (plugin->client_perform_task != GNUNET_SCHEDULER_NO_TASK)
687 GNUNET_SCHEDULER_cancel (plugin->client_perform_task);
688 plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
690 client_schedule (plugin, GNUNET_YES);
697 * Function that can be used to force the plugin to disconnect
698 * from the given peer and cancel all previous transmissions
699 * (and their continuationc).
702 * @param target peer from which to disconnect
705 http_client_plugin_disconnect (void *cls, const struct GNUNET_PeerIdentity *target)
707 struct HTTP_Client_Plugin *plugin = cls;
708 struct Session *next = NULL;
709 struct Session *pos = NULL;
711 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
712 "Transport tells me to disconnect `%s'\n",
713 GNUNET_i2s (target));
716 while (NULL != (pos = next))
719 if (0 == memcmp (target, &pos->target, sizeof (struct GNUNET_PeerIdentity)))
721 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
722 "Disconnecting session %p to `%pos'\n",
723 pos, GNUNET_i2s (target));
724 GNUNET_assert (GNUNET_OK == client_disconnect (pos));
731 static struct Session *
732 client_lookup_session (struct HTTP_Client_Plugin *plugin,
733 const struct GNUNET_HELLO_Address *address)
737 for (pos = plugin->head; NULL != pos; pos = pos->next)
738 if ((0 == memcmp (&address->peer, &pos->target, sizeof (struct GNUNET_PeerIdentity))) &&
739 (address->address_length == pos->addrlen) &&
740 (0 == memcmp (address->address, pos->addr, pos->addrlen)))
746 client_put_disconnect (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
748 struct Session *s = cls;
749 s->put_disconnect_task = GNUNET_SCHEDULER_NO_TASK;
750 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
751 "Session %p/connection %p: will be disconnected due to no activity\n",
753 s->put_paused = GNUNET_NO;
754 s->put_tmp_disconnecting = GNUNET_YES;
755 curl_easy_pause (s->client_put, CURLPAUSE_CONT);
756 client_schedule (s->plugin, GNUNET_YES);
762 * Callback method used with libcurl
763 * Method is called when libcurl needs to read data during sending
765 * @param stream pointer where to write data
766 * @param size size of an individual element
767 * @param nmemb count of elements that can be written to the buffer
768 * @param cls source pointer, passed to the libcurl handle
769 * @return bytes written to stream, returning 0 will terminate connection!
772 client_send_cb (void *stream, size_t size, size_t nmemb, void *cls)
774 struct Session *s = cls;
775 struct HTTP_Client_Plugin *plugin = s->plugin;
776 struct HTTP_Message *msg = s->msg_head;
780 if (GNUNET_YES != client_exist_session (plugin, s))
785 if (GNUNET_YES == s->put_tmp_disconnecting)
788 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
789 "Session %p/connection %p: disconnect due to inactivity\n",
796 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
797 "Session %p/connection %p: nothing to send, suspending\n",
799 s->put_disconnect_task = GNUNET_SCHEDULER_add_delayed (PUT_DISCONNECT_TIMEOUT, &client_put_disconnect, s);
800 s->put_paused = GNUNET_YES;
801 return CURL_READFUNC_PAUSE;
804 GNUNET_assert (msg->pos < msg->size);
805 /* calculate how much fits in buffer */
806 len = GNUNET_MIN (msg->size - msg->pos,
808 memcpy (stream, &msg->buf[msg->pos], len);
810 if (msg->pos == msg->size)
812 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
813 "Session %p/connection %p: sent message with %u bytes sent, removing message from queue\n",
814 s, s->client_put, msg->size, msg->pos);
815 /* Calling transmit continuation */
816 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
817 if (NULL != msg->transmit_cont)
818 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_OK,
819 msg->size, msg->size + s->overhead);
824 GNUNET_asprintf (&stat_txt, "# bytes currently in %s_client buffers", plugin->protocol);
825 GNUNET_STATISTICS_update (plugin->env->stats,
826 stat_txt, -len, GNUNET_NO);
827 GNUNET_free (stat_txt);
829 GNUNET_asprintf (&stat_txt, "# bytes transmitted via %s_client", plugin->protocol);
830 GNUNET_STATISTICS_update (plugin->env->stats,
831 stat_txt, len, GNUNET_NO);
832 GNUNET_free (stat_txt);
834 client_reschedule_session_timeout (s);
840 * Wake up a curl handle which was suspended
842 * @param cls the session
843 * @param tc task context
846 client_wake_up (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
848 struct Session *s = cls;
850 if (GNUNET_YES != client_exist_session(p, s))
855 s->recv_wakeup_task = GNUNET_SCHEDULER_NO_TASK;
856 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
858 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
859 "Session %p/connection %p: Waking up GET handle\n", s, s->client_get);
860 if (s->client_get != NULL)
861 curl_easy_pause (s->client_get, CURLPAUSE_CONT);
866 * Callback for message stream tokenizer
868 * @param cls the session
869 * @param client not used
870 * @param message the message received
871 * @return always GNUNET_OK
874 client_receive_mst_cb (void *cls, void *client,
875 const struct GNUNET_MessageHeader *message)
877 struct Session *s = cls;
878 struct HTTP_Client_Plugin *plugin;
879 struct GNUNET_TIME_Relative delay;
880 struct GNUNET_ATS_Information atsi[2];
882 if (GNUNET_YES != client_exist_session(p, s))
889 atsi[0].type = htonl (GNUNET_ATS_QUALITY_NET_DISTANCE);
890 atsi[0].value = htonl (1);
891 atsi[1].type = htonl (GNUNET_ATS_NETWORK_TYPE);
892 atsi[1].value = s->ats_address_network_type;
893 GNUNET_break (s->ats_address_network_type != ntohl (GNUNET_ATS_NET_UNSPECIFIED));
895 delay = s->plugin->env->receive (plugin->env->cls, &s->target, message,
896 (const struct GNUNET_ATS_Information *) &atsi, 2,
897 s, s->addr, s->addrlen);
899 GNUNET_asprintf (&stat_txt, "# bytes received via %s_client", plugin->protocol);
900 GNUNET_STATISTICS_update (plugin->env->stats,
901 stat_txt, ntohs(message->size), GNUNET_NO);
902 GNUNET_free (stat_txt);
905 GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (), delay);
907 if (GNUNET_TIME_absolute_get ().abs_value < s->next_receive.abs_value)
910 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
911 "Client: peer `%s' address `%s' next read delayed for %llu ms\n",
912 GNUNET_i2s (&s->target), GNUNET_a2s (s->addr, s->addrlen),
915 client_reschedule_session_timeout (s);
921 * Callback method used with libcurl when data for a PUT connection are
922 * received. We do not expect data here, so we just dismiss it
924 * @param stream pointer where to write data
925 * @param size size of an individual element
926 * @param nmemb count of elements that can be written to the buffer
927 * @param cls destination pointer, passed to the libcurl handle
928 * @return bytes read from stream
931 client_receive_put (void *stream, size_t size, size_t nmemb, void *cls)
938 * Callback method used with libcurl when data for a GET connection are
939 * received. Forward to MST
941 * @param stream pointer where to write data
942 * @param size size of an individual element
943 * @param nmemb count of elements that can be written to the buffer
944 * @param cls destination pointer, passed to the libcurl handle
945 * @return bytes read from stream
948 client_receive (void *stream, size_t size, size_t nmemb, void *cls)
950 struct Session *s = cls;
951 struct GNUNET_TIME_Absolute now;
952 size_t len = size * nmemb;
954 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
955 "Session %p / connection %p: Received %u bytes from peer `%s'\n",
957 len, GNUNET_i2s (&s->target));
958 now = GNUNET_TIME_absolute_get ();
959 if (now.abs_value < s->next_receive.abs_value)
961 struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
962 struct GNUNET_TIME_Relative delta =
963 GNUNET_TIME_absolute_get_difference (now, s->next_receive);
964 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
965 "Session %p / connection %p: No inbound bandwidth available! Next read was delayed for %llu ms\n",
966 s, s->client_get, delta.rel_value);
967 if (s->recv_wakeup_task != GNUNET_SCHEDULER_NO_TASK)
969 GNUNET_SCHEDULER_cancel (s->recv_wakeup_task);
970 s->recv_wakeup_task = GNUNET_SCHEDULER_NO_TASK;
972 s->recv_wakeup_task =
973 GNUNET_SCHEDULER_add_delayed (delta, &client_wake_up, s);
974 return CURL_WRITEFUNC_PAUSE;
976 if (NULL == s->msg_tk)
977 s->msg_tk = GNUNET_SERVER_mst_create (&client_receive_mst_cb, s);
978 GNUNET_SERVER_mst_receive (s->msg_tk, s, stream, len, GNUNET_NO, GNUNET_NO);
984 * Task performing curl operations
986 * @param cls plugin as closure
987 * @param tc gnunet scheduler task context
990 client_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
994 * Function setting up file descriptors and scheduling task to run
996 * @param plugin plugin as closure
997 * @param now schedule task in 1ms, regardless of what curl may say
998 * @return GNUNET_SYSERR for hard failure, GNUNET_OK for ok
1001 client_schedule (struct HTTP_Client_Plugin *plugin, int now)
1007 struct GNUNET_NETWORK_FDSet *grs;
1008 struct GNUNET_NETWORK_FDSet *gws;
1011 struct GNUNET_TIME_Relative timeout;
1013 /* Cancel previous scheduled task */
1014 if (plugin->client_perform_task != GNUNET_SCHEDULER_NO_TASK)
1016 GNUNET_SCHEDULER_cancel (plugin->client_perform_task);
1017 plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
1023 mret = curl_multi_fdset (plugin->curl_multi_handle, &rs, &ws, &es, &max);
1024 if (mret != CURLM_OK)
1026 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("%s failed at %s:%d: `%s'\n"),
1027 "curl_multi_fdset", __FILE__, __LINE__,
1028 curl_multi_strerror (mret));
1029 return GNUNET_SYSERR;
1031 mret = curl_multi_timeout (plugin->curl_multi_handle, &to);
1033 timeout = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 1);
1035 timeout = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, to);
1036 if (now == GNUNET_YES)
1037 timeout = GNUNET_TIME_UNIT_MILLISECONDS;
1039 if (mret != CURLM_OK)
1041 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("%s failed at %s:%d: `%s'\n"),
1042 "curl_multi_timeout", __FILE__, __LINE__,
1043 curl_multi_strerror (mret));
1044 return GNUNET_SYSERR;
1047 grs = GNUNET_NETWORK_fdset_create ();
1048 gws = GNUNET_NETWORK_fdset_create ();
1049 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
1050 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
1052 plugin->client_perform_task =
1053 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1055 &client_run, plugin);
1056 GNUNET_NETWORK_fdset_destroy (gws);
1057 GNUNET_NETWORK_fdset_destroy (grs);
1063 * Task performing curl operations
1065 * @param cls plugin as closure
1066 * @param tc gnunet scheduler task context
1069 client_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1071 struct HTTP_Client_Plugin *plugin = cls;
1073 long http_statuscode;
1076 GNUNET_assert (cls != NULL);
1078 plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
1079 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1085 mret = curl_multi_perform (plugin->curl_multi_handle, &running);
1090 while ((msg = curl_multi_info_read (plugin->curl_multi_handle, &msgs_left)))
1092 CURL *easy_h = msg->easy_handle;
1093 struct Session *s = NULL;
1094 char *d = (char *) s;
1099 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1100 "Client: connection to ended with reason %i: `%s', %i handles running\n",
1102 curl_easy_strerror (msg->data.result), running);
1106 GNUNET_assert (CURLE_OK ==
1107 curl_easy_getinfo (easy_h, CURLINFO_PRIVATE, &d));
1108 s = (struct Session *) d;
1110 if (GNUNET_YES != client_exist_session(plugin, s))
1116 GNUNET_assert (s != NULL);
1117 if (msg->msg == CURLMSG_DONE)
1119 curl_easy_getinfo (easy_h, CURLINFO_RESPONSE_CODE, &http_statuscode);
1120 if (easy_h == s->client_put)
1122 if ((0 != msg->data.result) || (http_statuscode != 200))
1124 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1125 "Session %p/connection %p: PUT connection to `%s' ended with status %i reason %i: `%s'\n",
1126 s, msg->easy_handle, GNUNET_i2s (&s->target),
1129 curl_easy_strerror (msg->data.result));
1132 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1133 "Session %p/connection %p: PUT connection to `%s' ended normal\n",
1134 s, msg->easy_handle, GNUNET_i2s (&s->target));
1135 if (s->client_get == NULL)
1137 /* Disconnect other transmission direction and tell transport */
1139 curl_multi_remove_handle (plugin->curl_multi_handle, easy_h);
1140 curl_easy_cleanup (easy_h);
1141 s->put_tmp_disconnecting = GNUNET_NO;
1142 s->put_tmp_disconnected = GNUNET_YES;
1143 s->client_put = NULL;
1144 s->put.easyhandle = NULL;
1148 * Handling a rare case:
1149 * plugin_send was called during temporary put disconnect,
1150 * reconnect required after connection was disconnected
1152 if (GNUNET_YES == s->put_reconnect_required)
1154 s->put_reconnect_required = GNUNET_NO;
1155 client_connect_put(s);
1158 if (easy_h == s->client_get)
1160 if ((0 != msg->data.result) || (http_statuscode != 200))
1162 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1163 "Session %p/connection %p: GET connection to `%s' ended with status %i reason %i: `%s'\n",
1164 s, msg->easy_handle, GNUNET_i2s (&s->target),
1167 curl_easy_strerror (msg->data.result));
1171 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1172 "Session %p/connection %p: GET connection to `%s' ended normal\n",
1173 s, msg->easy_handle, GNUNET_i2s (&s->target));
1174 /* Disconnect other transmission direction and tell transport */
1175 s->get.easyhandle = NULL;
1177 client_disconnect (s);
1182 while (mret == CURLM_CALL_MULTI_PERFORM);
1183 client_schedule (plugin, GNUNET_NO);
1187 client_connect_get (struct Session *s)
1190 /* create get connection */
1191 s->client_get = curl_easy_init ();
1193 s->get.easyhandle = s->client_get;
1195 curl_easy_setopt (s->client_get, CURLOPT_VERBOSE, 1L);
1196 curl_easy_setopt (s->client_get, CURLOPT_DEBUGFUNCTION, &client_log);
1197 curl_easy_setopt (s->client_get, CURLOPT_DEBUGDATA, &s->get);
1200 curl_easy_setopt (s->client_get, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
1201 curl_easy_setopt (s->client_get, CURLOPT_SSL_VERIFYPEER, 0);
1202 curl_easy_setopt (s->client_get, CURLOPT_SSL_VERIFYHOST, 0);
1204 curl_easy_setopt (s->client_get, CURLOPT_URL, s->url);
1205 //curl_easy_setopt (s->client_get, CURLOPT_HEADERFUNCTION, &curl_get_header_cb);
1206 //curl_easy_setopt (s->client_get, CURLOPT_WRITEHEADER, ps);
1207 curl_easy_setopt (s->client_get, CURLOPT_READFUNCTION, client_send_cb);
1208 curl_easy_setopt (s->client_get, CURLOPT_READDATA, s);
1209 curl_easy_setopt (s->client_get, CURLOPT_WRITEFUNCTION, client_receive);
1210 curl_easy_setopt (s->client_get, CURLOPT_WRITEDATA, s);
1211 /* No timeout by default, timeout done with session timeout */
1212 curl_easy_setopt (s->client_get, CURLOPT_TIMEOUT, 0);
1213 curl_easy_setopt (s->client_get, CURLOPT_PRIVATE, s);
1214 curl_easy_setopt (s->client_get, CURLOPT_CONNECTTIMEOUT_MS,
1215 (long) HTTP_CLIENT_NOT_VALIDATED_TIMEOUT.rel_value);
1216 curl_easy_setopt (s->client_get, CURLOPT_BUFFERSIZE,
1217 2 * GNUNET_SERVER_MAX_MESSAGE_SIZE);
1218 #if CURL_TCP_NODELAY
1219 curl_easy_setopt (ps->recv_endpoint, CURLOPT_TCP_NODELAY, 1);
1221 mret = curl_multi_add_handle (s->plugin->curl_multi_handle, s->client_get);
1222 if (mret != CURLM_OK)
1224 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, s->plugin->name,
1225 "Session %p : Failed to add GET handle to multihandle: `%s'\n",
1226 s, curl_multi_strerror (mret));
1227 curl_easy_cleanup (s->client_get);
1228 s->client_get = NULL;
1230 s->get.easyhandle = NULL;
1232 return GNUNET_SYSERR;
1239 client_connect_put (struct Session *s)
1242 /* create put connection */
1243 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
1244 "Session %p : Init PUT handle \n", s);
1245 s->client_put = curl_easy_init ();
1247 s->put.easyhandle = s->client_put;
1249 curl_easy_setopt (s->client_put, CURLOPT_VERBOSE, 1L);
1250 curl_easy_setopt (s->client_put, CURLOPT_DEBUGFUNCTION, &client_log);
1251 curl_easy_setopt (s->client_put, CURLOPT_DEBUGDATA, &s->put);
1254 curl_easy_setopt (s->client_put, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
1255 curl_easy_setopt (s->client_put, CURLOPT_SSL_VERIFYPEER, 0);
1256 curl_easy_setopt (s->client_put, CURLOPT_SSL_VERIFYHOST, 0);
1258 curl_easy_setopt (s->client_put, CURLOPT_URL, s->url);
1259 curl_easy_setopt (s->client_put, CURLOPT_UPLOAD, 1L);
1260 //curl_easy_setopt (s->client_put, CURLOPT_HEADERFUNCTION, &client_curl_header);
1261 //curl_easy_setopt (s->client_put, CURLOPT_WRITEHEADER, ps);
1262 curl_easy_setopt (s->client_put, CURLOPT_READFUNCTION, client_send_cb);
1263 curl_easy_setopt (s->client_put, CURLOPT_READDATA, s);
1264 curl_easy_setopt (s->client_put, CURLOPT_WRITEFUNCTION, client_receive_put);
1265 curl_easy_setopt (s->client_put, CURLOPT_WRITEDATA, s);
1266 /* No timeout by default, timeout done with session timeout */
1267 curl_easy_setopt (s->client_put, CURLOPT_TIMEOUT, 0);
1268 curl_easy_setopt (s->client_put, CURLOPT_PRIVATE, s);
1269 curl_easy_setopt (s->client_put, CURLOPT_CONNECTTIMEOUT_MS,
1270 (long) HTTP_CLIENT_NOT_VALIDATED_TIMEOUT.rel_value);
1271 curl_easy_setopt (s->client_put, CURLOPT_BUFFERSIZE,
1272 2 * GNUNET_SERVER_MAX_MESSAGE_SIZE);
1273 #if CURL_TCP_NODELAY
1274 curl_easy_setopt (s->client_put, CURLOPT_TCP_NODELAY, 1);
1276 mret = curl_multi_add_handle (s->plugin->curl_multi_handle, s->client_put);
1277 if (mret != CURLM_OK)
1279 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, s->plugin->name,
1280 "Session %p : Failed to add PUT handle to multihandle: `%s'\n",
1281 s, curl_multi_strerror (mret));
1282 curl_easy_cleanup (s->client_put);
1283 s->client_put = NULL;
1284 s->put.easyhandle = NULL;
1286 return GNUNET_SYSERR;
1292 client_connect (struct Session *s)
1295 struct HTTP_Client_Plugin *plugin = s->plugin;
1296 int res = GNUNET_OK;
1300 if (NULL == http_common_plugin_address_to_string (NULL, s->addr, s->addrlen))
1302 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1303 "Invalid address peer `%s'\n",
1304 GNUNET_i2s (&s->target));
1305 return GNUNET_SYSERR;
1308 GNUNET_asprintf (&s->url, "%s/%s;%u",
1309 http_common_plugin_address_to_string (plugin, s->addr, s->addrlen),
1310 GNUNET_h2s_full (&plugin->env->my_identity->hashPubKey),
1315 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1316 "Initiating outbound session peer `%s' using address `%s'\n",
1317 GNUNET_i2s (&s->target), s->url);
1319 if ((GNUNET_SYSERR == client_connect_get (s)) ||
1320 (GNUNET_SYSERR == client_connect_put (s)))
1323 return GNUNET_SYSERR;
1326 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1327 "Session %p: connected with connections GET %p and PUT %p\n",
1328 s, s->client_get, s->client_put);
1330 /* Perform connect */
1331 plugin->cur_connections += 2;
1332 GNUNET_STATISTICS_set (plugin->env->stats,
1333 "# HTTP client connections",
1334 plugin->cur_connections,
1337 /* Re-schedule since handles have changed */
1338 if (plugin->client_perform_task != GNUNET_SCHEDULER_NO_TASK)
1340 GNUNET_SCHEDULER_cancel (plugin->client_perform_task);
1341 plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
1343 plugin->client_perform_task = GNUNET_SCHEDULER_add_now (client_run, plugin);
1349 * Creates a new outbound session the transport service will use to send data to the
1352 * @param cls the plugin
1353 * @param address the address
1354 * @return the session or NULL of max connections exceeded
1356 static struct Session *
1357 http_client_plugin_get_session (void *cls,
1358 const struct GNUNET_HELLO_Address *address)
1360 struct HTTP_Client_Plugin *plugin = cls;
1361 struct Session * s = NULL;
1362 struct sockaddr *sa;
1363 struct GNUNET_ATS_Information ats;
1367 GNUNET_assert (plugin != NULL);
1368 GNUNET_assert (address != NULL);
1369 GNUNET_assert (address->address != NULL);
1371 /* find existing session */
1372 s = client_lookup_session (plugin, address);
1376 if (plugin->max_connections <= plugin->cur_connections)
1378 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
1379 "Maximum number of connections (%u) reached: "
1380 "cannot connect to peer `%s'\n",
1381 plugin->max_connections,
1382 GNUNET_i2s (&address->peer));
1386 ats.type = htonl (GNUNET_ATS_NETWORK_TYPE);
1387 ats.value = htonl (GNUNET_ATS_NET_UNSPECIFIED);
1388 sa = http_common_socket_from_address (address->address, address->address_length, &res);
1390 if (GNUNET_SYSERR == res)
1394 else if (GNUNET_YES == res)
1396 GNUNET_assert (NULL != sa);
1397 if (AF_INET == sa->sa_family)
1399 salen = sizeof (struct sockaddr_in);
1401 else if (AF_INET == sa->sa_family)
1403 salen = sizeof (struct sockaddr_in6);
1405 ats = plugin->env->get_address_type (plugin->env->cls, sa, salen);
1408 else if (GNUNET_NO == res)
1410 ats.value = htonl (GNUNET_ATS_COST_WAN);
1413 if (GNUNET_ATS_NET_UNSPECIFIED == ntohl(ats.value))
1419 s = GNUNET_malloc (sizeof (struct Session));
1420 memcpy (&s->target, &address->peer, sizeof (struct GNUNET_PeerIdentity));
1422 s->addr = GNUNET_malloc (address->address_length);
1423 memcpy (s->addr, address->address, address->address_length);
1424 s->addrlen = address->address_length;
1425 s->ats_address_network_type = ats.value;
1426 s->put_paused = GNUNET_NO;
1427 s->put_tmp_disconnecting = GNUNET_NO;
1428 s->put_tmp_disconnected = GNUNET_NO;
1429 client_start_session_timeout (s);
1431 /* add new session */
1432 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
1434 /* initiate new connection */
1435 if (GNUNET_SYSERR == client_connect (s))
1437 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1438 "Cannot connect to peer `%s' address `%s''\n",
1439 http_common_plugin_address_to_string (NULL, s->addr, s->addrlen),
1440 GNUNET_i2s (&s->target));
1441 client_delete_session (s);
1449 * Setup http_client plugin
1451 * @param plugin the plugin handle
1452 * @return GNUNET_OK on success, GNUNET_SYSERR on error
1455 client_start (struct HTTP_Client_Plugin *plugin)
1457 curl_global_init (CURL_GLOBAL_ALL);
1458 plugin->curl_multi_handle = curl_multi_init ();
1460 if (NULL == plugin->curl_multi_handle)
1462 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1463 _("Could not initialize curl multi handle, failed to start %s plugin!\n"),
1465 return GNUNET_SYSERR;
1471 * Session was idle, so disconnect it
1474 client_session_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1476 GNUNET_assert (NULL != cls);
1477 struct Session *s = cls;
1479 s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
1480 GNUNET_log (TIMEOUT_LOG,
1481 "Session %p was idle for %llu ms, disconnecting\n",
1482 s, (unsigned long long) CLIENT_SESSION_TIMEOUT.rel_value);
1484 /* call session destroy function */
1485 GNUNET_assert (GNUNET_OK == client_disconnect (s));
1490 * Start session timeout for session s
1492 * @param s the session
1495 client_start_session_timeout (struct Session *s)
1498 GNUNET_assert (NULL != s);
1499 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == s->timeout_task);
1500 s->timeout_task = GNUNET_SCHEDULER_add_delayed (CLIENT_SESSION_TIMEOUT,
1501 &client_session_timeout,
1503 GNUNET_log (TIMEOUT_LOG,
1504 "Timeout for session %p set to %llu ms\n",
1505 s, (unsigned long long) CLIENT_SESSION_TIMEOUT.rel_value);
1510 * Increment session timeout due to activity for session s
1512 * param s the session
1515 client_reschedule_session_timeout (struct Session *s)
1518 GNUNET_assert (NULL != s);
1519 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != s->timeout_task);
1521 GNUNET_SCHEDULER_cancel (s->timeout_task);
1522 s->timeout_task = GNUNET_SCHEDULER_add_delayed (CLIENT_SESSION_TIMEOUT,
1523 &client_session_timeout,
1525 GNUNET_log (TIMEOUT_LOG,
1526 "Timeout rescheduled for session %p set to %llu ms\n",
1527 s, (unsigned long long) CLIENT_SESSION_TIMEOUT.rel_value);
1532 * Cancel timeout due to activity for session s
1534 * param s the session
1537 client_stop_session_timeout (struct Session *s)
1539 GNUNET_assert (NULL != s);
1541 if (GNUNET_SCHEDULER_NO_TASK != s->timeout_task)
1543 GNUNET_SCHEDULER_cancel (s->timeout_task);
1544 s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
1545 GNUNET_log (TIMEOUT_LOG, "Timeout stopped for session %p\n", s);
1551 * Another peer has suggested an address for this
1552 * peer and transport plugin. Check that this could be a valid
1553 * address. If so, consider adding it to the list
1556 * @param cls closure
1557 * @param addr pointer to the address
1558 * @param addrlen length of addr
1559 * @return GNUNET_OK if this is a plausible address for this peer
1563 http_client_plugin_address_suggested (void *cls, const void *addr, size_t addrlen)
1565 /* struct Plugin *plugin = cls; */
1567 /* A HTTP/S client does not have any valid address so:*/
1573 * Exit point from the plugin.
1575 * @param cls api as closure
1579 LIBGNUNET_PLUGIN_TRANSPORT_DONE (void *cls)
1581 struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
1582 struct HTTP_Client_Plugin *plugin = api->cls;
1583 struct Session *pos;
1584 struct Session *next;
1586 if (NULL == api->cls)
1593 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1594 _("Shutting down plugin `%s'\n"),
1598 next = plugin->head;
1599 while (NULL != (pos = next))
1602 client_disconnect (pos);
1604 if (GNUNET_SCHEDULER_NO_TASK != plugin->client_perform_task)
1606 GNUNET_SCHEDULER_cancel (plugin->client_perform_task);
1607 plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
1611 if (NULL != plugin->curl_multi_handle)
1613 curl_multi_cleanup (plugin->curl_multi_handle);
1614 plugin->curl_multi_handle = NULL;
1616 curl_global_cleanup ();
1618 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1619 _("Shutdown for plugin `%s' complete\n"),
1622 GNUNET_free (plugin);
1631 * @param plugin the plugin handle
1632 * @return GNUNET_OK on success, GNUNET_SYSERR on failure
1635 client_configure_plugin (struct HTTP_Client_Plugin *plugin)
1637 unsigned long long max_connections;
1639 /* Optional parameters */
1640 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number (plugin->env->cfg,
1642 "MAX_CONNECTIONS", &max_connections))
1643 max_connections = 128;
1644 plugin->max_connections = max_connections;
1646 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1647 _("Maximum number of connections is %u\n"),
1648 plugin->max_connections);
1653 * Entry point for the plugin.
1656 LIBGNUNET_PLUGIN_TRANSPORT_INIT (void *cls)
1658 struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
1659 struct GNUNET_TRANSPORT_PluginFunctions *api;
1660 struct HTTP_Client_Plugin *plugin;
1662 if (NULL == env->receive)
1664 /* run in 'stub' mode (i.e. as part of gnunet-peerinfo), don't fully
1665 initialze the plugin or the API */
1666 api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
1668 api->address_to_string = &http_common_plugin_address_to_string;
1669 api->string_to_address = &http_common_plugin_string_to_address;
1670 api->address_pretty_printer = &http_common_plugin_address_pretty_printer;
1674 plugin = GNUNET_malloc (sizeof (struct HTTP_Client_Plugin));
1677 api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
1679 api->send = &http_client_plugin_send;
1680 api->disconnect = &http_client_plugin_disconnect;
1681 api->check_address = &http_client_plugin_address_suggested;
1682 api->get_session = &http_client_plugin_get_session;
1683 api->address_to_string = &http_common_plugin_address_to_string;
1684 api->string_to_address = &http_common_plugin_string_to_address;
1685 api->address_pretty_printer = &http_common_plugin_address_pretty_printer;
1689 plugin->name = "transport-https_client";
1690 plugin->protocol = "https";
1692 plugin->name = "transport-http_client";
1693 plugin->protocol = "http";
1695 plugin->last_tag = 1;
1697 if (GNUNET_SYSERR == client_configure_plugin (plugin))
1699 LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
1704 if (GNUNET_SYSERR == client_start (plugin))
1706 LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
1712 /* end of plugin_transport_http_client.c */