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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 PLUGIN_NAME "https_client"
29 #define HTTP_STAT_STR_CONNECTIONS "# HTTPS client connections"
30 #define LIBGNUNET_PLUGIN_TRANSPORT_INIT libgnunet_plugin_transport_https_client_init
31 #define LIBGNUNET_PLUGIN_TRANSPORT_DONE libgnunet_plugin_transport_https_client_done
33 #define PLUGIN_NAME "http_client"
34 #define HTTP_STAT_STR_CONNECTIONS "# HTTP client connections"
35 #define LIBGNUNET_PLUGIN_TRANSPORT_INIT libgnunet_plugin_transport_http_client_init
36 #define LIBGNUNET_PLUGIN_TRANSPORT_DONE libgnunet_plugin_transport_http_client_done
39 #define VERBOSE_CURL GNUNET_YES
41 #define PUT_DISCONNECT_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 1)
43 #define ENABLE_PUT GNUNET_YES
44 #define ENABLE_GET GNUNET_YES
47 #include "gnunet_util_lib.h"
48 #include "gnunet_protocols.h"
49 #include "gnunet_transport_plugin.h"
50 #include "plugin_transport_http_common.h"
51 #include <curl/curl.h>
56 * Encapsulation of all of the state of the plugin.
58 struct HTTP_Client_Plugin;
62 * Message to send using http
67 * next pointer for double linked list
69 struct HTTP_Message *next;
72 * previous pointer for double linked list
74 struct HTTP_Message *prev;
77 * buffer containing data to send
82 * amount of data already sent
92 * Continuation function to call once the transmission buffer
93 * has again space available. NULL if there is no
94 * continuation to call.
96 GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
99 * Closure for transmit_cont.
101 void *transmit_cont_cls;
106 * Session handle for connections.
112 * A connection handle
115 struct ConnectionHandle
118 * The curl easy handle
123 * The related session
130 * Session handle for connections.
135 * To whom are we talking to (set to our identity
136 * if we are still waiting for the welcome message)
138 struct GNUNET_PeerIdentity target;
141 * Stored in a linked list.
143 struct Session *next;
146 * Stored in a linked list.
148 struct Session *prev;
151 * The URL to connect to
158 struct HttpAddress *addr;
166 * ATS network type in NBO
168 uint32_t ats_address_network_type;
171 * Pointer to the global plugin struct.
173 struct HTTP_Client_Plugin *plugin;
180 struct ConnectionHandle put;
181 struct ConnectionHandle get;
184 * Is the client PUT handle currently paused
189 * Is the client PUT handle disconnect in progress?
191 int put_tmp_disconnecting;
194 * Is the client PUT handle temporarily disconnected?
196 int put_tmp_disconnected;
199 * We received data to send while disconnecting, reconnect immediately
201 int put_reconnect_required;
204 * Client receive handle
209 * Outbound overhead due to HTTP connection
210 * Add to next message of this session when calling callback
215 * next pointer for double linked list
217 struct HTTP_Message *msg_head;
220 * previous pointer for double linked list
222 struct HTTP_Message *msg_tail;
225 * Message stream tokenizer for incoming data
227 struct GNUNET_SERVER_MessageStreamTokenizer *msg_tk;
230 * Session timeout task
232 GNUNET_SCHEDULER_TaskIdentifier put_disconnect_task;
235 * Session timeout task
237 GNUNET_SCHEDULER_TaskIdentifier timeout_task;
240 * Task to wake up client receive handle when receiving is allowed again
242 GNUNET_SCHEDULER_TaskIdentifier recv_wakeup_task;
245 * Absolute time when to receive data again
246 * Used for receive throttling
248 struct GNUNET_TIME_Absolute next_receive;
253 * Encapsulation of all of the state of the plugin.
255 struct HTTP_Client_Plugin
260 struct GNUNET_TRANSPORT_PluginEnvironment *env;
263 * Linked list head of open sessions.
265 struct Session *head;
268 * Linked list tail of open sessions.
270 struct Session *tail;
283 * My options to be included in the address
288 * Maximum number of sockets the plugin can use
289 * Each http inbound /outbound connections are two connections
291 unsigned int max_connections;
294 * Current number of sockets the plugin can use
295 * Each http inbound /outbound connections are two connections
297 unsigned int cur_connections;
300 * Last used unique HTTP connection tag
317 CURLM *curl_multi_handle;
322 GNUNET_SCHEDULER_TaskIdentifier client_perform_task;
327 * Encapsulation of all of the state of the plugin.
329 struct HTTP_Client_Plugin *p;
333 * Start session timeout for a session
334 * @param s the session
337 client_start_session_timeout (struct Session *s);
341 * Increment session timeout due to activity for a session
342 * @param s the session
345 client_reschedule_session_timeout (struct Session *s);
349 * Cancel timeout for a session
350 * @param s the session
353 client_stop_session_timeout (struct Session *s);
357 * Function setting up file descriptors and scheduling task to run
359 * @param plugin plugin as closure
360 * @param now schedule task in 1ms, regardless of what curl may say
361 * @return GNUNET_SYSERR for hard failure, GNUNET_OK for ok
364 client_schedule (struct HTTP_Client_Plugin *plugin, int now);
368 * Connect a HTTP put connection
370 * @param s the session to connect
371 * @return GNUNET_SYSERR for hard failure, GNUNET_OK for success
374 client_connect_put (struct Session *s);
378 * Does a session s exists?
380 * @param plugin the plugin
381 * @param s desired session
382 * @return GNUNET_YES or GNUNET_NO
385 client_exist_session (struct HTTP_Client_Plugin *plugin, struct Session *s)
387 struct Session * head;
389 GNUNET_assert (NULL != plugin);
390 GNUNET_assert (NULL != s);
392 for (head = plugin->head; head != NULL; head = head->next)
404 * @param curl the curl easy handle
405 * @param type message type
406 * @param data data to log, NOT a 0-terminated string
407 * @param size data length
408 * @param cls the closure
412 client_log (CURL *curl, curl_infotype type,
413 const char *data, size_t size, void *cls)
415 struct ConnectionHandle *ch = cls;
416 const char *ttype = "UNSPECIFIED";
418 if ((type == CURLINFO_TEXT) || (type == CURLINFO_HEADER_IN) || (type == CURLINFO_HEADER_OUT))
426 case CURLINFO_HEADER_IN:
429 case CURLINFO_HEADER_OUT:
430 ttype = "HEADER_OUT";
433 GNUNET_assert (NULL != ch);
434 GNUNET_assert (NULL != ch->easyhandle);
435 GNUNET_assert (NULL != ch->s);
436 ch->s->overhead += size;
439 ttype = "UNSPECIFIED";
443 memcpy (text, data, size);
444 if (text[size - 1] == '\n')
449 text[size + 1] = '\0';
452 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "transport-https_client",
453 "Connection %p %s: %s", ch->easyhandle, ttype, text);
455 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "transport-http_client",
456 "Connection %p %s: %s", ch->easyhandle, ttype, text);
464 * Function that can be used by the transport service to transmit
465 * a message using the plugin. Note that in the case of a
466 * peer disconnecting, the continuation MUST be called
467 * prior to the disconnect notification itself. This function
468 * will be called with this peer's HELLO message to initiate
469 * a fresh connection to another peer.
472 * @param s which session must be used
473 * @param msgbuf the message to transmit
474 * @param msgbuf_size number of bytes in 'msgbuf'
475 * @param priority how important is the message (most plugins will
476 * ignore message priority and just FIFO)
477 * @param to how long to wait at most for the transmission (does not
478 * require plugins to discard the message after the timeout,
479 * just advisory for the desired delay; most plugins will ignore
481 * @param cont continuation to call once the message has
482 * been transmitted (or if the transport is ready
483 * for the next transmission call; or if the
484 * peer disconnected...); can be NULL
485 * @param cont_cls closure for cont
486 * @return number of bytes used (on the physical network, with overheads);
487 * -1 on hard errors (i.e. address invalid); 0 is a legal value
488 * and does NOT mean that the message was not transmitted (DV)
491 http_client_plugin_send (void *cls,
493 const char *msgbuf, size_t msgbuf_size,
494 unsigned int priority,
495 struct GNUNET_TIME_Relative to,
496 GNUNET_TRANSPORT_TransmitContinuation cont,
499 struct HTTP_Client_Plugin *plugin = cls;
500 struct HTTP_Message *msg;
503 GNUNET_assert (plugin != NULL);
504 GNUNET_assert (s != NULL);
506 /* lookup if session is really existing */
507 if (GNUNET_YES != client_exist_session (plugin, s))
510 return GNUNET_SYSERR;
513 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
514 "Session %p/connection %p: Sending message with %u to peer `%s' \n",
516 msgbuf_size, GNUNET_i2s (&s->target));
518 /* create new message and schedule */
519 msg = GNUNET_malloc (sizeof (struct HTTP_Message) + msgbuf_size);
521 msg->size = msgbuf_size;
523 msg->buf = (char *) &msg[1];
524 msg->transmit_cont = cont;
525 msg->transmit_cont_cls = cont_cls;
526 memcpy (msg->buf, msgbuf, msgbuf_size);
527 GNUNET_CONTAINER_DLL_insert_tail (s->msg_head, s->msg_tail, msg);
529 GNUNET_asprintf (&stat_txt, "# bytes currently in %s_client buffers", plugin->protocol);
530 GNUNET_STATISTICS_update (plugin->env->stats,
531 stat_txt, msgbuf_size, GNUNET_NO);
533 GNUNET_free (stat_txt);
535 if (GNUNET_YES == s->put_tmp_disconnecting)
537 /* PUT connection is currently getting disconnected */
538 s->put_reconnect_required = GNUNET_YES;
539 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
540 "Session %p/connection %jp: currently disconnecting, reconnecting immediately\n",
544 else if (GNUNET_YES == s->put_paused)
546 /* PUT connection was paused, unpause */
547 GNUNET_assert (s->put_disconnect_task != GNUNET_SCHEDULER_NO_TASK);
548 GNUNET_SCHEDULER_cancel (s->put_disconnect_task);
549 s->put_disconnect_task = GNUNET_SCHEDULER_NO_TASK;
550 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
551 "Session %p/connection %p: unpausing connection\n",
553 s->put_paused = GNUNET_NO;
554 curl_easy_pause (s->client_put, CURLPAUSE_CONT);
556 else if (GNUNET_YES == s->put_tmp_disconnected)
558 /* PUT connection was disconnected, reconnect */
559 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
560 "Session %p: Reconnecting PUT connection\n",
562 s->put_tmp_disconnected = GNUNET_NO;
563 GNUNET_break (s->client_put == NULL);
564 if (GNUNET_SYSERR == client_connect_put (s))
566 return GNUNET_SYSERR;
570 client_schedule (s->plugin, GNUNET_YES);
571 client_reschedule_session_timeout (s);
579 * @param s the session to delete
582 client_delete_session (struct Session *s)
584 struct HTTP_Client_Plugin *plugin = s->plugin;
585 struct HTTP_Message *pos;
586 struct HTTP_Message *next;
588 client_stop_session_timeout (s);
590 if (GNUNET_SCHEDULER_NO_TASK != s->put_disconnect_task)
592 GNUNET_SCHEDULER_cancel (s->put_disconnect_task);
593 s->put_disconnect_task = GNUNET_SCHEDULER_NO_TASK;
596 GNUNET_CONTAINER_DLL_remove (plugin->head, plugin->tail, s);
599 while (NULL != (pos = next))
602 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, pos);
603 if (pos->transmit_cont != NULL)
604 pos->transmit_cont (pos->transmit_cont_cls, &s->target, GNUNET_SYSERR,
605 pos->size, pos->pos + s->overhead);
610 if (s->msg_tk != NULL)
612 GNUNET_SERVER_mst_destroy (s->msg_tk);
615 GNUNET_free (s->addr);
616 GNUNET_free (s->url);
623 * Disconnect a session
626 * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
629 http_client_session_disconnect (struct HTTP_Client_Plugin *plugin,
632 struct HTTP_Message *msg;
633 struct HTTP_Message *t;
637 if (GNUNET_YES != client_exist_session (plugin, s))
640 return GNUNET_SYSERR;
643 if (s->client_put != NULL)
645 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
646 "Session %p/connection %p: disconnecting PUT connection to peer `%s'\n",
647 s, s->client_put, GNUNET_i2s (&s->target));
649 /* remove curl handle from multi handle */
650 mret = curl_multi_remove_handle (plugin->curl_multi_handle, s->client_put);
651 if (mret != CURLM_OK)
653 /* clean up easy handle, handle is now invalid and free'd */
657 curl_easy_cleanup (s->client_put);
658 s->client_put = NULL;
662 if (s->recv_wakeup_task != GNUNET_SCHEDULER_NO_TASK)
664 GNUNET_SCHEDULER_cancel (s->recv_wakeup_task);
665 s->recv_wakeup_task = GNUNET_SCHEDULER_NO_TASK;
668 if (s->client_get != NULL)
670 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
671 "Session %p/connection %p: disconnecting GET connection to peer `%s'\n",
672 s, s->client_get, GNUNET_i2s (&s->target));
674 /* remove curl handle from multi handle */
675 mret = curl_multi_remove_handle (plugin->curl_multi_handle, s->client_get);
676 if (mret != CURLM_OK)
678 /* clean up easy handle, handle is now invalid and free'd */
682 curl_easy_cleanup (s->client_get);
683 s->client_get = NULL;
690 if (NULL != msg->transmit_cont)
691 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_SYSERR,
692 msg->size, msg->pos + s->overhead);
694 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
699 GNUNET_assert (plugin->cur_connections >= 2);
700 plugin->cur_connections -= 2;
701 GNUNET_STATISTICS_set (plugin->env->stats,
702 HTTP_STAT_STR_CONNECTIONS,
703 plugin->cur_connections,
706 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
707 "Session %p: notifying transport about ending session\n",s);
709 plugin->env->session_end (plugin->env->cls, &s->target, s);
710 client_delete_session (s);
712 /* Re-schedule since handles have changed */
713 if (plugin->client_perform_task != GNUNET_SCHEDULER_NO_TASK)
715 GNUNET_SCHEDULER_cancel (plugin->client_perform_task);
716 plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
718 client_schedule (plugin, GNUNET_YES);
725 * Function that can be used to force the plugin to disconnect
726 * from the given peer and cancel all previous transmissions
727 * (and their continuationc).
730 * @param target peer from which to disconnect
733 http_client_peer_disconnect (void *cls,
734 const struct GNUNET_PeerIdentity *target)
736 struct HTTP_Client_Plugin *plugin = cls;
737 struct Session *next = NULL;
738 struct Session *pos = NULL;
740 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
741 "Transport tells me to disconnect `%s'\n",
742 GNUNET_i2s (target));
745 while (NULL != (pos = next))
748 if (0 == memcmp (target, &pos->target, sizeof (struct GNUNET_PeerIdentity)))
750 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
751 "Disconnecting session %p to `%pos'\n",
752 pos, GNUNET_i2s (target));
753 GNUNET_assert (GNUNET_OK == http_client_session_disconnect (plugin,
761 * Check if a sessions exists for an specific address
763 * @param plugin the plugin
764 * @param address the address
765 * @return the session or NULL
767 static struct Session *
768 client_lookup_session (struct HTTP_Client_Plugin *plugin,
769 const struct GNUNET_HELLO_Address *address)
773 for (pos = plugin->head; NULL != pos; pos = pos->next)
774 if ((0 == memcmp (&address->peer, &pos->target, sizeof (struct GNUNET_PeerIdentity))) &&
775 (address->address_length == pos->addrlen) &&
776 (0 == memcmp (address->address, pos->addr, pos->addrlen)))
782 client_put_disconnect (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
784 struct Session *s = cls;
785 s->put_disconnect_task = GNUNET_SCHEDULER_NO_TASK;
786 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
787 "Session %p/connection %p: will be disconnected due to no activity\n",
789 s->put_paused = GNUNET_NO;
790 s->put_tmp_disconnecting = GNUNET_YES;
791 curl_easy_pause (s->client_put, CURLPAUSE_CONT);
792 client_schedule (s->plugin, GNUNET_YES);
798 * Callback method used with libcurl
799 * Method is called when libcurl needs to read data during sending
801 * @param stream pointer where to write data
802 * @param size size of an individual element
803 * @param nmemb count of elements that can be written to the buffer
804 * @param cls source pointer, passed to the libcurl handle
805 * @return bytes written to stream, returning 0 will terminate connection!
808 client_send_cb (void *stream, size_t size, size_t nmemb, void *cls)
810 struct Session *s = cls;
811 struct HTTP_Client_Plugin *plugin = s->plugin;
812 struct HTTP_Message *msg = s->msg_head;
816 if (GNUNET_YES != client_exist_session (plugin, s))
821 if (GNUNET_YES == s->put_tmp_disconnecting)
824 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
825 "Session %p/connection %p: disconnect due to inactivity\n",
832 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
833 "Session %p/connection %p: nothing to send, suspending\n",
835 s->put_disconnect_task = GNUNET_SCHEDULER_add_delayed (PUT_DISCONNECT_TIMEOUT, &client_put_disconnect, s);
836 s->put_paused = GNUNET_YES;
837 return CURL_READFUNC_PAUSE;
840 GNUNET_assert (msg->pos < msg->size);
841 /* calculate how much fits in buffer */
842 len = GNUNET_MIN (msg->size - msg->pos,
844 memcpy (stream, &msg->buf[msg->pos], len);
846 if (msg->pos == msg->size)
848 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
849 "Session %p/connection %p: sent message with %u bytes sent, removing message from queue\n",
850 s, s->client_put, msg->size, msg->pos);
851 /* Calling transmit continuation */
852 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
853 if (NULL != msg->transmit_cont)
854 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_OK,
855 msg->size, msg->size + s->overhead);
860 GNUNET_asprintf (&stat_txt, "# bytes currently in %s_client buffers", plugin->protocol);
861 GNUNET_STATISTICS_update (plugin->env->stats,
862 stat_txt, -len, GNUNET_NO);
863 GNUNET_free (stat_txt);
865 GNUNET_asprintf (&stat_txt, "# bytes transmitted via %s_client", plugin->protocol);
866 GNUNET_STATISTICS_update (plugin->env->stats,
867 stat_txt, len, GNUNET_NO);
868 GNUNET_free (stat_txt);
870 client_reschedule_session_timeout (s);
876 * Wake up a curl handle which was suspended
878 * @param cls the session
879 * @param tc task context
882 client_wake_up (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
884 struct Session *s = cls;
886 if (GNUNET_YES != client_exist_session(p, s))
891 s->recv_wakeup_task = GNUNET_SCHEDULER_NO_TASK;
892 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
894 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
895 "Session %p/connection %p: Waking up GET handle\n", s, s->client_get);
896 if (s->client_get != NULL)
897 curl_easy_pause (s->client_get, CURLPAUSE_CONT);
902 * Callback for message stream tokenizer
904 * @param cls the session
905 * @param client not used
906 * @param message the message received
907 * @return always GNUNET_OK
910 client_receive_mst_cb (void *cls, void *client,
911 const struct GNUNET_MessageHeader *message)
913 struct Session *s = cls;
914 struct HTTP_Client_Plugin *plugin;
915 struct GNUNET_TIME_Relative delay;
916 struct GNUNET_ATS_Information atsi;
919 if (GNUNET_YES != client_exist_session(p, s))
926 atsi.type = htonl (GNUNET_ATS_NETWORK_TYPE);
927 atsi.value = s->ats_address_network_type;
928 GNUNET_break (s->ats_address_network_type != ntohl (GNUNET_ATS_NET_UNSPECIFIED));
929 delay = s->plugin->env->receive (plugin->env->cls, &s->target, message,
930 s, (const char *) s->addr, s->addrlen);
932 plugin->env->update_address_metrics (plugin->env->cls,
939 GNUNET_asprintf (&stat_txt, "# bytes received via %s_client", plugin->protocol);
940 GNUNET_STATISTICS_update (plugin->env->stats,
941 stat_txt, ntohs(message->size), GNUNET_NO);
942 GNUNET_free (stat_txt);
945 GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (), delay);
947 if (GNUNET_TIME_absolute_get ().abs_value_us < s->next_receive.abs_value_us)
949 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
950 "Client: peer `%s' address `%s' next read delayed for %s\n",
951 GNUNET_i2s (&s->target),
952 http_common_plugin_address_to_string (NULL,
954 s->addr, s->addrlen),
955 GNUNET_STRINGS_relative_time_to_string (delay,
958 client_reschedule_session_timeout (s);
964 * Callback method used with libcurl when data for a PUT connection are
965 * received. We do not expect data here, so we just dismiss it
967 * @param stream pointer where to write data
968 * @param size size of an individual element
969 * @param nmemb count of elements that can be written to the buffer
970 * @param cls destination pointer, passed to the libcurl handle
971 * @return bytes read from stream
974 client_receive_put (void *stream, size_t size, size_t nmemb, void *cls)
981 * Callback method used with libcurl when data for a GET connection are
982 * received. Forward to MST
984 * @param stream pointer where to write data
985 * @param size size of an individual element
986 * @param nmemb count of elements that can be written to the buffer
987 * @param cls destination pointer, passed to the libcurl handle
988 * @return bytes read from stream
991 client_receive (void *stream, size_t size, size_t nmemb, void *cls)
993 struct Session *s = cls;
994 struct GNUNET_TIME_Absolute now;
995 size_t len = size * nmemb;
997 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
998 "Session %p / connection %p: Received %u bytes from peer `%s'\n",
1000 len, GNUNET_i2s (&s->target));
1001 now = GNUNET_TIME_absolute_get ();
1002 if (now.abs_value_us < s->next_receive.abs_value_us)
1004 struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
1005 struct GNUNET_TIME_Relative delta =
1006 GNUNET_TIME_absolute_get_difference (now, s->next_receive);
1007 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
1008 "Session %p / connection %p: No inbound bandwidth available! Next read was delayed for %s\n",
1010 GNUNET_STRINGS_relative_time_to_string (delta,
1012 if (s->recv_wakeup_task != GNUNET_SCHEDULER_NO_TASK)
1014 GNUNET_SCHEDULER_cancel (s->recv_wakeup_task);
1015 s->recv_wakeup_task = GNUNET_SCHEDULER_NO_TASK;
1017 s->recv_wakeup_task =
1018 GNUNET_SCHEDULER_add_delayed (delta, &client_wake_up, s);
1019 return CURL_WRITEFUNC_PAUSE;
1021 if (NULL == s->msg_tk)
1022 s->msg_tk = GNUNET_SERVER_mst_create (&client_receive_mst_cb, s);
1023 GNUNET_SERVER_mst_receive (s->msg_tk, s, stream, len, GNUNET_NO, GNUNET_NO);
1029 * Task performing curl operations
1031 * @param cls plugin as closure
1032 * @param tc gnunet scheduler task context
1035 client_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
1039 * Function setting up file descriptors and scheduling task to run
1041 * @param plugin the plugin as closure
1042 * @param now schedule task in 1ms, regardless of what curl may say
1043 * @return GNUNET_SYSERR for hard failure, GNUNET_OK for ok
1046 client_schedule (struct HTTP_Client_Plugin *plugin, int now)
1052 struct GNUNET_NETWORK_FDSet *grs;
1053 struct GNUNET_NETWORK_FDSet *gws;
1056 struct GNUNET_TIME_Relative timeout;
1058 /* Cancel previous scheduled task */
1059 if (plugin->client_perform_task != GNUNET_SCHEDULER_NO_TASK)
1061 GNUNET_SCHEDULER_cancel (plugin->client_perform_task);
1062 plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
1068 mret = curl_multi_fdset (plugin->curl_multi_handle, &rs, &ws, &es, &max);
1069 if (mret != CURLM_OK)
1071 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("%s failed at %s:%d: `%s'\n"),
1072 "curl_multi_fdset", __FILE__, __LINE__,
1073 curl_multi_strerror (mret));
1074 return GNUNET_SYSERR;
1076 mret = curl_multi_timeout (plugin->curl_multi_handle, &to);
1078 timeout = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 1);
1080 timeout = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, to);
1081 if (now == GNUNET_YES)
1082 timeout = GNUNET_TIME_UNIT_MILLISECONDS;
1084 if (mret != CURLM_OK)
1086 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("%s failed at %s:%d: `%s'\n"),
1087 "curl_multi_timeout", __FILE__, __LINE__,
1088 curl_multi_strerror (mret));
1089 return GNUNET_SYSERR;
1092 grs = GNUNET_NETWORK_fdset_create ();
1093 gws = GNUNET_NETWORK_fdset_create ();
1094 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
1095 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
1097 plugin->client_perform_task =
1098 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1100 &client_run, plugin);
1101 GNUNET_NETWORK_fdset_destroy (gws);
1102 GNUNET_NETWORK_fdset_destroy (grs);
1108 * Task performing curl operations
1110 * @param cls plugin as closure
1111 * @param tc gnunet scheduler task context
1114 client_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1116 struct HTTP_Client_Plugin *plugin = cls;
1118 long http_statuscode;
1121 GNUNET_assert (cls != NULL);
1123 plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
1124 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1130 mret = curl_multi_perform (plugin->curl_multi_handle, &running);
1135 while ((msg = curl_multi_info_read (plugin->curl_multi_handle, &msgs_left)))
1137 CURL *easy_h = msg->easy_handle;
1138 struct Session *s = NULL;
1139 char *d = (char *) s;
1144 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1145 "Client: connection to ended with reason %i: `%s', %i handles running\n",
1147 curl_easy_strerror (msg->data.result), running);
1151 GNUNET_assert (CURLE_OK ==
1152 curl_easy_getinfo (easy_h, CURLINFO_PRIVATE, &d));
1153 s = (struct Session *) d;
1155 if (GNUNET_YES != client_exist_session(plugin, s))
1161 GNUNET_assert (s != NULL);
1162 if (msg->msg == CURLMSG_DONE)
1164 curl_easy_getinfo (easy_h, CURLINFO_RESPONSE_CODE, &http_statuscode);
1165 if (easy_h == s->client_put)
1167 if ((0 != msg->data.result) || (http_statuscode != 200))
1169 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1170 "Session %p/connection %p: PUT connection to `%s' ended with status %i reason %i: `%s'\n",
1171 s, msg->easy_handle, GNUNET_i2s (&s->target),
1174 curl_easy_strerror (msg->data.result));
1177 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1178 "Session %p/connection %p: PUT connection to `%s' ended normal\n",
1179 s, msg->easy_handle, GNUNET_i2s (&s->target));
1180 if (s->client_get == NULL)
1182 /* Disconnect other transmission direction and tell transport */
1184 curl_multi_remove_handle (plugin->curl_multi_handle, easy_h);
1185 curl_easy_cleanup (easy_h);
1186 s->put_tmp_disconnecting = GNUNET_NO;
1187 s->put_tmp_disconnected = GNUNET_YES;
1188 s->client_put = NULL;
1189 s->put.easyhandle = NULL;
1193 * Handling a rare case:
1194 * plugin_send was called during temporary put disconnect,
1195 * reconnect required after connection was disconnected
1197 if (GNUNET_YES == s->put_reconnect_required)
1199 s->put_reconnect_required = GNUNET_NO;
1200 if (GNUNET_SYSERR == client_connect_put(s))
1202 GNUNET_break (s->client_put == NULL);
1203 GNUNET_break (s->put_tmp_disconnected == GNUNET_NO);
1207 if (easy_h == s->client_get)
1209 if ((0 != msg->data.result) || (http_statuscode != 200))
1211 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1212 "Session %p/connection %p: GET connection to `%s' ended with status %i reason %i: `%s'\n",
1213 s, msg->easy_handle, GNUNET_i2s (&s->target),
1216 curl_easy_strerror (msg->data.result));
1220 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1221 "Session %p/connection %p: GET connection to `%s' ended normal\n",
1222 s, msg->easy_handle, GNUNET_i2s (&s->target));
1223 /* Disconnect other transmission direction and tell transport */
1224 s->get.easyhandle = NULL;
1226 http_client_session_disconnect (plugin, s);
1231 while (mret == CURLM_CALL_MULTI_PERFORM);
1232 client_schedule (plugin, GNUNET_NO);
1237 * Connect GET connection for a session
1239 * @param s the session to connect
1240 * @return GNUNET_OK on success, GNUNET_SYSERR otherwise
1243 client_connect_get (struct Session *s)
1247 /* create get connection */
1248 s->client_get = curl_easy_init ();
1250 s->get.easyhandle = s->client_get;
1252 curl_easy_setopt (s->client_get, CURLOPT_VERBOSE, 1L);
1253 curl_easy_setopt (s->client_get, CURLOPT_DEBUGFUNCTION, &client_log);
1254 curl_easy_setopt (s->client_get, CURLOPT_DEBUGDATA, &s->get);
1257 curl_easy_setopt (s->client_get, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
1258 if (HTTP_OPTIONS_VERIFY_CERTIFICATE ==
1259 (ntohl (s->addr->options) & HTTP_OPTIONS_VERIFY_CERTIFICATE))
1261 curl_easy_setopt (s->client_get, CURLOPT_SSL_VERIFYPEER, 1L);
1262 curl_easy_setopt (s->client_get, CURLOPT_SSL_VERIFYHOST, 2L);
1266 curl_easy_setopt (s->client_get, CURLOPT_SSL_VERIFYPEER, 0);
1267 curl_easy_setopt (s->client_get, CURLOPT_SSL_VERIFYHOST, 0);
1269 curl_easy_setopt (s->client_get, CURLOPT_PROTOCOLS, CURLPROTO_HTTPS);
1270 curl_easy_setopt (s->client_get, CURLOPT_REDIR_PROTOCOLS, CURLPROTO_HTTPS);
1272 curl_easy_setopt (s->client_get, CURLOPT_PROTOCOLS, CURLPROTO_HTTP);
1273 curl_easy_setopt (s->client_get, CURLOPT_REDIR_PROTOCOLS, CURLPROTO_HTTP);
1276 curl_easy_setopt (s->client_get, CURLOPT_URL, s->url);
1277 //curl_easy_setopt (s->client_get, CURLOPT_HEADERFUNCTION, &curl_get_header_cb);
1278 //curl_easy_setopt (s->client_get, CURLOPT_WRITEHEADER, ps);
1279 curl_easy_setopt (s->client_get, CURLOPT_READFUNCTION, client_send_cb);
1280 curl_easy_setopt (s->client_get, CURLOPT_READDATA, s);
1281 curl_easy_setopt (s->client_get, CURLOPT_WRITEFUNCTION, client_receive);
1282 curl_easy_setopt (s->client_get, CURLOPT_WRITEDATA, s);
1283 /* No timeout by default, timeout done with session timeout */
1284 curl_easy_setopt (s->client_get, CURLOPT_TIMEOUT, 0);
1285 curl_easy_setopt (s->client_get, CURLOPT_PRIVATE, s);
1286 curl_easy_setopt (s->client_get, CURLOPT_CONNECTTIMEOUT_MS,
1287 (long) HTTP_CLIENT_NOT_VALIDATED_TIMEOUT.rel_value_us / 1000LL);
1288 curl_easy_setopt (s->client_get, CURLOPT_BUFFERSIZE,
1289 2 * GNUNET_SERVER_MAX_MESSAGE_SIZE);
1290 #if CURL_TCP_NODELAY
1291 curl_easy_setopt (ps->recv_endpoint, CURLOPT_TCP_NODELAY, 1);
1293 curl_easy_setopt (s->client_get, CURLOPT_FOLLOWLOCATION, 0);
1295 mret = curl_multi_add_handle (s->plugin->curl_multi_handle, s->client_get);
1296 if (mret != CURLM_OK)
1298 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, s->plugin->name,
1299 "Session %p : Failed to add GET handle to multihandle: `%s'\n",
1300 s, curl_multi_strerror (mret));
1301 curl_easy_cleanup (s->client_get);
1302 s->client_get = NULL;
1304 s->get.easyhandle = NULL;
1306 return GNUNET_SYSERR;
1313 * Connect a HTTP put connection
1315 * @param s the session to connect
1316 * @return GNUNET_SYSERR for hard failure, GNUNET_OK for ok
1319 client_connect_put (struct Session *s)
1322 /* create put connection */
1323 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
1324 "Session %p : Init PUT handle \n", s);
1325 s->client_put = curl_easy_init ();
1327 s->put.easyhandle = s->client_put;
1329 curl_easy_setopt (s->client_put, CURLOPT_VERBOSE, 1L);
1330 curl_easy_setopt (s->client_put, CURLOPT_DEBUGFUNCTION, &client_log);
1331 curl_easy_setopt (s->client_put, CURLOPT_DEBUGDATA, &s->put);
1334 curl_easy_setopt (s->client_put, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
1335 if (HTTP_OPTIONS_VERIFY_CERTIFICATE ==
1336 (ntohl (s->addr->options) & HTTP_OPTIONS_VERIFY_CERTIFICATE))
1338 curl_easy_setopt (s->client_put, CURLOPT_SSL_VERIFYPEER, 1L);
1339 curl_easy_setopt (s->client_put, CURLOPT_SSL_VERIFYHOST, 2L);
1343 curl_easy_setopt (s->client_put, CURLOPT_SSL_VERIFYPEER, 0);
1344 curl_easy_setopt (s->client_put, CURLOPT_SSL_VERIFYHOST, 0);
1346 curl_easy_setopt (s->client_get, CURLOPT_PROTOCOLS, CURLPROTO_HTTPS);
1347 curl_easy_setopt (s->client_get, CURLOPT_REDIR_PROTOCOLS, CURLPROTO_HTTPS);
1349 curl_easy_setopt (s->client_get, CURLOPT_PROTOCOLS, CURLPROTO_HTTP);
1350 curl_easy_setopt (s->client_get, CURLOPT_REDIR_PROTOCOLS, CURLPROTO_HTTP);
1352 curl_easy_setopt (s->client_put, CURLOPT_URL, s->url);
1353 curl_easy_setopt (s->client_put, CURLOPT_UPLOAD, 1L);
1354 //curl_easy_setopt (s->client_put, CURLOPT_HEADERFUNCTION, &client_curl_header);
1355 //curl_easy_setopt (s->client_put, CURLOPT_WRITEHEADER, ps);
1356 curl_easy_setopt (s->client_put, CURLOPT_READFUNCTION, client_send_cb);
1357 curl_easy_setopt (s->client_put, CURLOPT_READDATA, s);
1358 curl_easy_setopt (s->client_put, CURLOPT_WRITEFUNCTION, client_receive_put);
1359 curl_easy_setopt (s->client_put, CURLOPT_WRITEDATA, s);
1360 /* No timeout by default, timeout done with session timeout */
1361 curl_easy_setopt (s->client_put, CURLOPT_TIMEOUT, 0);
1362 curl_easy_setopt (s->client_put, CURLOPT_PRIVATE, s);
1363 curl_easy_setopt (s->client_put, CURLOPT_CONNECTTIMEOUT_MS,
1364 (long) HTTP_CLIENT_NOT_VALIDATED_TIMEOUT.rel_value_us / 1000LL);
1365 curl_easy_setopt (s->client_put, CURLOPT_BUFFERSIZE,
1366 2 * GNUNET_SERVER_MAX_MESSAGE_SIZE);
1367 #if CURL_TCP_NODELAY
1368 curl_easy_setopt (s->client_put, CURLOPT_TCP_NODELAY, 1);
1370 mret = curl_multi_add_handle (s->plugin->curl_multi_handle, s->client_put);
1371 if (mret != CURLM_OK)
1373 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, s->plugin->name,
1374 "Session %p : Failed to add PUT handle to multihandle: `%s'\n",
1375 s, curl_multi_strerror (mret));
1376 curl_easy_cleanup (s->client_put);
1377 s->client_put = NULL;
1378 s->put.easyhandle = NULL;
1380 s->put_tmp_disconnected = GNUNET_YES;
1381 return GNUNET_SYSERR;
1383 s->put_tmp_disconnected = GNUNET_NO;
1389 * Connect both PUT and GET connection for a session
1391 * @param s the session to connect
1392 * @return GNUNET_OK on success, GNUNET_SYSERR otherwise
1395 client_connect (struct Session *s)
1398 struct HTTP_Client_Plugin *plugin = s->plugin;
1399 int res = GNUNET_OK;
1402 if (NULL == http_common_plugin_address_to_string (NULL, plugin->protocol, s->addr, s->addrlen))
1404 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1405 "Invalid address peer `%s'\n",
1406 GNUNET_i2s (&s->target));
1407 return GNUNET_SYSERR;
1410 GNUNET_asprintf (&s->url, "%s/%s;%u",
1411 http_common_plugin_address_to_url (NULL, s->addr, s->addrlen),
1412 GNUNET_i2s_full (plugin->env->my_identity),
1417 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1418 "Initiating outbound session peer `%s' using address `%s'\n",
1419 GNUNET_i2s (&s->target), s->url);
1421 if ((GNUNET_SYSERR == client_connect_get (s)) ||
1422 (GNUNET_SYSERR == client_connect_put (s)))
1425 return GNUNET_SYSERR;
1428 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1429 "Session %p: connected with connections GET %p and PUT %p\n",
1430 s, s->client_get, s->client_put);
1432 /* Perform connect */
1433 plugin->cur_connections += 2;
1434 GNUNET_STATISTICS_set (plugin->env->stats,
1435 HTTP_STAT_STR_CONNECTIONS,
1436 plugin->cur_connections,
1439 /* Re-schedule since handles have changed */
1440 if (plugin->client_perform_task != GNUNET_SCHEDULER_NO_TASK)
1442 GNUNET_SCHEDULER_cancel (plugin->client_perform_task);
1443 plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
1445 plugin->client_perform_task = GNUNET_SCHEDULER_add_now (client_run, plugin);
1451 * Function obtain the network type for a session
1453 * @param cls closure ('struct Plugin*')
1454 * @param session the session
1455 * @return the network type in HBO or GNUNET_SYSERR
1457 static enum GNUNET_ATS_Network_Type
1458 http_client_get_network (void *cls,
1459 struct Session *session)
1461 GNUNET_assert (NULL != session);
1462 return ntohl (session->ats_address_network_type);
1467 * Creates a new outbound session the transport service will use to send data to the
1470 * @param cls the plugin
1471 * @param address the address
1472 * @return the session or NULL of max connections exceeded
1474 static struct Session *
1475 http_client_plugin_get_session (void *cls,
1476 const struct GNUNET_HELLO_Address *address)
1478 struct HTTP_Client_Plugin *plugin = cls;
1479 struct Session * s = NULL;
1480 struct sockaddr *sa;
1481 struct GNUNET_ATS_Information ats;
1485 GNUNET_assert (plugin != NULL);
1486 GNUNET_assert (address != NULL);
1487 GNUNET_assert (address->address != NULL);
1489 /* find existing session */
1490 s = client_lookup_session (plugin, address);
1494 if (plugin->max_connections <= plugin->cur_connections)
1496 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
1497 "Maximum number of connections (%u) reached: "
1498 "cannot connect to peer `%s'\n",
1499 plugin->max_connections,
1500 GNUNET_i2s (&address->peer));
1504 /* Determine network location */
1505 ats.type = htonl (GNUNET_ATS_NETWORK_TYPE);
1506 ats.value = htonl (GNUNET_ATS_NET_UNSPECIFIED);
1507 sa = http_common_socket_from_address (address->address, address->address_length, &res);
1508 if (GNUNET_SYSERR == res)
1512 else if (GNUNET_YES == res)
1514 GNUNET_assert (NULL != sa);
1515 if (AF_INET == sa->sa_family)
1517 salen = sizeof (struct sockaddr_in);
1519 else if (AF_INET6 == sa->sa_family)
1521 salen = sizeof (struct sockaddr_in6);
1523 ats = plugin->env->get_address_type (plugin->env->cls, sa, salen);
1524 //fprintf (stderr, "Address %s is in %s\n", GNUNET_a2s (sa,salen), GNUNET_ATS_print_network_type(ntohl(ats.value)));
1528 else if (GNUNET_NO == res)
1530 /* Cannot convert to sockaddr -> is external hostname */
1531 ats.value = htonl (GNUNET_ATS_NET_WAN);
1534 if (GNUNET_ATS_NET_UNSPECIFIED == ntohl(ats.value))
1540 s = GNUNET_new (struct Session);
1541 s->target = address->peer;
1543 s->addr = GNUNET_malloc (address->address_length);
1544 memcpy (s->addr, address->address, address->address_length);
1545 s->addrlen = address->address_length;
1546 s->ats_address_network_type = ats.value;
1547 s->put_paused = GNUNET_NO;
1548 s->put_tmp_disconnecting = GNUNET_NO;
1549 s->put_tmp_disconnected = GNUNET_NO;
1550 client_start_session_timeout (s);
1552 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1553 "Created new session %p for `%s' address `%s''\n",
1555 http_common_plugin_address_to_string (NULL, plugin->protocol, s->addr, s->addrlen),
1556 GNUNET_i2s (&s->target));
1558 /* add new session */
1559 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
1561 /* initiate new connection */
1562 if (GNUNET_SYSERR == client_connect (s))
1564 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1565 "Cannot connect to peer `%s' address `%s''\n",
1566 http_common_plugin_address_to_string (NULL, plugin->protocol, s->addr, s->addrlen),
1567 GNUNET_i2s (&s->target));
1568 client_delete_session (s);
1576 * Setup http_client plugin
1578 * @param plugin the plugin handle
1579 * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
1582 client_start (struct HTTP_Client_Plugin *plugin)
1584 curl_global_init (CURL_GLOBAL_ALL);
1585 plugin->curl_multi_handle = curl_multi_init ();
1587 if (NULL == plugin->curl_multi_handle)
1589 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1590 _("Could not initialize curl multi handle, failed to start %s plugin!\n"),
1592 return GNUNET_SYSERR;
1598 * Session was idle, so disconnect it
1601 client_session_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1603 struct Session *s = cls;
1605 s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
1606 GNUNET_log (TIMEOUT_LOG,
1607 "Session %p was idle for %s, disconnecting\n",
1609 GNUNET_STRINGS_relative_time_to_string (HTTP_CLIENT_SESSION_TIMEOUT,
1612 /* call session destroy function */
1613 GNUNET_assert (GNUNET_OK == http_client_session_disconnect (s->plugin,
1619 * Start session timeout for session s
1621 * @param s the session
1624 client_start_session_timeout (struct Session *s)
1627 GNUNET_assert (NULL != s);
1628 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == s->timeout_task);
1629 s->timeout_task = GNUNET_SCHEDULER_add_delayed (HTTP_CLIENT_SESSION_TIMEOUT,
1630 &client_session_timeout,
1632 GNUNET_log (TIMEOUT_LOG,
1633 "Timeout for session %p set to %s\n",
1635 GNUNET_STRINGS_relative_time_to_string (HTTP_CLIENT_SESSION_TIMEOUT,
1641 * Increment session timeout due to activity for session s
1643 * param s the session
1646 client_reschedule_session_timeout (struct Session *s)
1649 GNUNET_assert (NULL != s);
1650 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != s->timeout_task);
1652 GNUNET_SCHEDULER_cancel (s->timeout_task);
1653 s->timeout_task = GNUNET_SCHEDULER_add_delayed (HTTP_CLIENT_SESSION_TIMEOUT,
1654 &client_session_timeout,
1656 GNUNET_log (TIMEOUT_LOG,
1657 "Timeout rescheduled for session %p set to %s\n",
1659 GNUNET_STRINGS_relative_time_to_string (HTTP_CLIENT_SESSION_TIMEOUT,
1665 * Cancel timeout due to activity for session s
1667 * param s the session
1670 client_stop_session_timeout (struct Session *s)
1672 GNUNET_assert (NULL != s);
1674 if (GNUNET_SCHEDULER_NO_TASK != s->timeout_task)
1676 GNUNET_SCHEDULER_cancel (s->timeout_task);
1677 s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
1678 GNUNET_log (TIMEOUT_LOG, "Timeout stopped for session %p\n", s);
1684 * Another peer has suggested an address for this
1685 * peer and transport plugin. Check that this could be a valid
1686 * address. If so, consider adding it to the list
1689 * @param cls closure
1690 * @param addr pointer to the address
1691 * @param addrlen length of addr
1692 * @return GNUNET_OK if this is a plausible address for this peer
1696 http_client_plugin_address_suggested (void *cls, const void *addr, size_t addrlen)
1698 /* struct Plugin *plugin = cls; */
1700 /* A HTTP/S client does not have any valid address so:*/
1706 * Exit point from the plugin.
1708 * @param cls api as closure
1712 LIBGNUNET_PLUGIN_TRANSPORT_DONE (void *cls)
1714 struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
1715 struct HTTP_Client_Plugin *plugin = api->cls;
1716 struct Session *pos;
1717 struct Session *next;
1719 if (NULL == api->cls)
1726 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1727 _("Shutting down plugin `%s'\n"),
1731 next = plugin->head;
1732 while (NULL != (pos = next))
1735 http_client_session_disconnect (plugin, pos);
1737 if (GNUNET_SCHEDULER_NO_TASK != plugin->client_perform_task)
1739 GNUNET_SCHEDULER_cancel (plugin->client_perform_task);
1740 plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
1744 if (NULL != plugin->curl_multi_handle)
1746 curl_multi_cleanup (plugin->curl_multi_handle);
1747 plugin->curl_multi_handle = NULL;
1749 curl_global_cleanup ();
1751 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1752 _("Shutdown for plugin `%s' complete\n"),
1755 GNUNET_free (plugin);
1764 * @param plugin the plugin handle
1765 * @return #GNUNET_OK on success, #GNUNET_SYSERR on failure
1768 client_configure_plugin (struct HTTP_Client_Plugin *plugin)
1770 unsigned long long max_connections;
1772 /* Optional parameters */
1773 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number (plugin->env->cfg,
1775 "MAX_CONNECTIONS", &max_connections))
1776 max_connections = 128;
1777 plugin->max_connections = max_connections;
1779 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1780 _("Maximum number of connections is %u\n"),
1781 plugin->max_connections);
1787 http_plugin_address_to_string (void *cls,
1791 return http_common_plugin_address_to_string (cls, PLUGIN_NAME, addr, addrlen);
1796 * Entry point for the plugin.
1799 LIBGNUNET_PLUGIN_TRANSPORT_INIT (void *cls)
1801 struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
1802 struct GNUNET_TRANSPORT_PluginFunctions *api;
1803 struct HTTP_Client_Plugin *plugin;
1805 if (NULL == env->receive)
1807 /* run in 'stub' mode (i.e. as part of gnunet-peerinfo), don't fully
1808 initialze the plugin or the API */
1809 api = GNUNET_new (struct GNUNET_TRANSPORT_PluginFunctions);
1811 api->address_to_string = &http_plugin_address_to_string;
1812 api->string_to_address = &http_common_plugin_string_to_address;
1813 api->address_pretty_printer = &http_common_plugin_address_pretty_printer;
1817 plugin = GNUNET_new (struct HTTP_Client_Plugin);
1820 api = GNUNET_new (struct GNUNET_TRANSPORT_PluginFunctions);
1822 api->send = &http_client_plugin_send;
1823 api->disconnect_session = &http_client_session_disconnect;
1824 api->disconnect_peer = &http_client_peer_disconnect;
1825 api->check_address = &http_client_plugin_address_suggested;
1826 api->get_session = &http_client_plugin_get_session;
1827 api->address_to_string = &http_plugin_address_to_string;
1828 api->string_to_address = &http_common_plugin_string_to_address;
1829 api->address_pretty_printer = &http_common_plugin_address_pretty_printer;
1830 api->get_network = &http_client_get_network;
1833 plugin->name = "transport-https_client";
1834 plugin->protocol = "https";
1836 plugin->name = "transport-http_client";
1837 plugin->protocol = "http";
1839 plugin->last_tag = 1;
1840 plugin->options = 0; /* Setup options */
1842 if (GNUNET_SYSERR == client_configure_plugin (plugin))
1844 LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
1849 if (GNUNET_SYSERR == client_start (plugin))
1851 LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
1857 /* end of plugin_transport_http_client.c */