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 2, 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.c
23 * @brief http transport service plugin
24 * @author Matthias Wachs
28 #include "gnunet_constants.h"
29 #include "gnunet_protocols.h"
30 #include "gnunet_connection_lib.h"
31 #include "gnunet_server_lib.h"
32 #include "gnunet_service_lib.h"
33 #include "gnunet_statistics_service.h"
34 #include "gnunet_transport_service.h"
35 #include "gnunet_resolver_service.h"
36 #include "gnunet_server_lib.h"
37 #include "gnunet_container_lib.h"
38 #include "plugin_transport.h"
39 #include "gnunet_os_lib.h"
40 #include "microhttpd.h"
41 #include <curl/curl.h>
44 #define DEBUG_CURL GNUNET_NO
45 #define DEBUG_HTTP GNUNET_NO
48 * Text of the response sent back after the last bytes of a PUT
49 * request have been received (just to formally obey the HTTP
52 #define HTTP_PUT_RESPONSE "Thank you!"
55 * After how long do we expire an address that we
56 * learned from another peer if it is not reconfirmed
59 #define LEARNED_ADDRESS_EXPIRATION GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 6)
62 * Page returned if request invalid
64 #define HTTP_ERROR_RESPONSE "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\"><HTML><HEAD><TITLE>404 Not Found</TITLE></HEAD><BODY><H1>Not Found</H1>The requested URL was not found on this server.<P><HR><ADDRESS></ADDRESS></BODY></HTML>"
67 * Timeout for a http connect
69 #define HTTP_CONNECT_TIMEOUT 30
72 * Timeout for a http connect
74 #define HTTP_MESSAGE_INITIAL_BUFFERSIZE GNUNET_SERVER_MAX_MESSAGE_SIZE
78 * Network format for IPv4 addresses.
80 struct IPv4HttpAddress
83 * IPv4 address, in network byte order.
88 * Port number, in network byte order.
96 * Network format for IPv6 addresses.
98 struct IPv6HttpAddress
103 struct in6_addr ipv6_addr;
106 * Port number, in network byte order.
115 * Message to send using http
120 * next pointer for double linked list
122 struct HTTP_Message * next;
125 * previous pointer for double linked list
127 struct HTTP_Message * prev;
130 * buffer containing data to send
135 * amount of data already sent
147 * Continuation function to call once the transmission buffer
148 * has again space available. NULL if there is no
149 * continuation to call.
151 GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
154 * Closure for transmit_cont.
156 void *transmit_cont_cls;
161 * Session handle for connections.
167 * Stored in a linked list.
169 struct Session *next;
172 * Pointer to the global plugin struct.
174 struct Plugin *plugin;
177 * To whom are we talking to (set to our identity
178 * if we are still waiting for the welcome message)
180 struct GNUNET_PeerIdentity partner;
183 * Sender's ip address to distinguish between incoming connections
185 //struct sockaddr_in * addr_inbound;
188 * Sender's ip address to distinguish between incoming connections
199 * Did we initiate the connection (GNUNET_YES) or the other peer (GNUNET_NO)?
204 * Is the connection active (GNUNET_YES) or terminated (GNUNET_NO)?
209 * At what time did we reset last_received last?
211 struct GNUNET_TIME_Absolute last_quota_update;
214 * How many bytes have we received since the "last_quota_update"
217 uint64_t last_received;
220 * Number of bytes per ms that this peer is allowed
226 * Is there a HTTP/PUT in progress?
228 int is_put_in_progress;
231 * Is the http request invalid?
238 struct GNUNET_CRYPTO_HashAsciiEncoded hash;
241 * Head of dll used to store outbound messages
243 struct HTTP_Message * pending_outbound_msg_head;
246 * Tail of dll used to store outbound messages
248 struct HTTP_Message * pending_outbound_msg_tail;
253 struct HTTP_Message * pending_inbound_msg;
256 * curl handle for outbound transmissions
261 * Message tokenizer for incoming data
263 struct GNUNET_SERVER_MessageStreamTokenizer * msgtok;
267 * Encapsulation of all of the state of the plugin.
274 struct GNUNET_TRANSPORT_PluginEnvironment *env;
276 unsigned int port_inbound;
279 * Hashmap for all existing sessions.
281 struct GNUNET_CONTAINER_MultiHashMap *sessions;
285 * Daemon for listening for new IPv4 connections.
287 static struct MHD_Daemon *http_daemon_v4;
290 * Daemon for listening for new IPv6connections.
292 static struct MHD_Daemon *http_daemon_v6;
295 * Our primary task for http daemon handling IPv4 connections
297 static GNUNET_SCHEDULER_TaskIdentifier http_task_v4;
300 * Our primary task for http daemon handling IPv6 connections
302 static GNUNET_SCHEDULER_TaskIdentifier http_task_v6;
305 * The task sending data
307 static GNUNET_SCHEDULER_TaskIdentifier http_task_send;
311 * Information about this plugin
313 static struct Plugin *plugin;
318 static CURLM *multi_handle;
321 * Our ASCII encoded, hashed peer identity
322 * This string is used to distinguish between connections and is added to the urls
324 static struct GNUNET_CRYPTO_HashAsciiEncoded my_ascii_hash_ident;
326 // MW: please document (which timeout is this!?)
327 static struct GNUNET_TIME_Relative timeout;
331 * Create a new session
333 * @param addr_in address the peer is using inbound
334 * @param addr_out address the peer is using outbound
335 * @param peer identity
336 * @return created session object
338 static struct Session * create_session (char * addr_in, size_t addrlen_in, char * addr_out, size_t addrlen_out, const struct GNUNET_PeerIdentity *peer)
340 struct Session * ses = GNUNET_malloc ( sizeof( struct Session) );
344 ses->addr_in = GNUNET_malloc (addrlen_in);
345 ses->addr_in_len = addrlen_in;
346 memcpy(ses->addr_in,addr_in,addrlen_in);
349 if (addrlen_out != 0)
351 ses->addr_out = GNUNET_malloc (addrlen_out);
352 ses->addr_out_len = addrlen_out;
353 memcpy(ses->addr_out,addr_out,addrlen_out);
355 ses->plugin = plugin;
356 memcpy(&ses->partner, peer, sizeof (struct GNUNET_PeerIdentity));
357 GNUNET_CRYPTO_hash_to_enc(&ses->partner.hashPubKey,&(ses->hash));
358 ses->is_active = GNUNET_NO;
359 ses->pending_inbound_msg = GNUNET_malloc( sizeof (struct HTTP_Message));
360 ses->pending_inbound_msg->buf = GNUNET_malloc(GNUNET_SERVER_MAX_MESSAGE_SIZE);
361 ses->pending_inbound_msg->len = GNUNET_SERVER_MAX_MESSAGE_SIZE;
362 ses->pending_inbound_msg->pos = 0;
368 * Callback called by MHD when a connection is terminated
370 static void requestCompletedCallback (void *cls, struct MHD_Connection * connection, void **httpSessionCache)
374 cs = *httpSessionCache;
377 /*GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection from peer `%s' was terminated\n",GNUNET_i2s(&cs->partner));*/
378 /* session set to inactive */
379 cs->is_active = GNUNET_NO;
380 cs->is_put_in_progress = GNUNET_NO;
384 static void messageTokenizerCallback (void *cls,
387 GNUNET_MessageHeader *
390 struct Session * cs = cls;
391 GNUNET_assert(cs != NULL);
393 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
394 "Received message with type %u and size %u from `%s'\n",
395 ntohs(message->type),
396 ntohs(message->size),
397 GNUNET_i2s(&(cs->partner)));
398 plugin->env->receive(plugin->env->cls,
403 /*(char *)cs->addr_in,
408 * Check if ip is allowed to connect.
411 acceptPolicyCallback (void *cls,
412 const struct sockaddr *addr, socklen_t addr_len)
414 /* Every connection is accepted, nothing more to do here */
419 * Process GET or PUT request received via MHD. For
420 * GET, queue response that will send back our pending
421 * messages. For PUT, process incoming data and send
422 * to GNUnet core. In either case, check if a session
423 * already exists and create a new one if not.
426 accessHandlerCallback (void *cls,
427 struct MHD_Connection *session,
431 const char *upload_data,
432 size_t * upload_data_size, void **httpSessionCache)
434 struct MHD_Response *response;
436 const union MHD_ConnectionInfo * conn_info;
437 struct sockaddr_in *addrin;
438 struct sockaddr_in6 *addrin6;
439 char address[INET6_ADDRSTRLEN+14];
440 struct GNUNET_PeerIdentity pi_in;
442 struct GNUNET_MessageHeader *cur_msg;
443 int send_error_to_client;
444 struct IPv4HttpAddress ipv4addr;
445 struct IPv6HttpAddress ipv6addr;
448 send_error_to_client = GNUNET_NO;
450 if ( NULL == *httpSessionCache)
452 /* check url for peer identity */
453 res = GNUNET_CRYPTO_hash_from_string ( &url[1], &(pi_in.hashPubKey));
454 if ( GNUNET_SYSERR == res )
456 response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
457 res = MHD_queue_response (session, MHD_HTTP_NOT_FOUND, response);
458 MHD_destroy_response (response);
460 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, sent HTTP 1.1/404\n");
462 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, could not send error\n");
466 conn_info = MHD_get_connection_info(session, MHD_CONNECTION_INFO_CLIENT_ADDRESS );
467 /* Incoming IPv4 connection */
468 if ( AF_INET == conn_info->client_addr->sin_family)
470 addrin = conn_info->client_addr;
471 inet_ntop(addrin->sin_family, &(addrin->sin_addr),address,INET_ADDRSTRLEN);
472 memcpy(&ipv4addr.ipv4_addr,&(addrin->sin_addr),sizeof(struct in_addr));
473 ipv4addr.u_port = addrin->sin_port;
475 /* Incoming IPv6 connection */
476 if ( AF_INET6 == conn_info->client_addr->sin_family)
478 addrin6 = (struct sockaddr_in6 *) conn_info->client_addr;
479 inet_ntop(addrin6->sin6_family, &(addrin6->sin6_addr),address,INET6_ADDRSTRLEN);
480 memcpy(&ipv6addr.ipv6_addr,&(addrin6->sin6_addr),sizeof(struct in_addr));
481 ipv6addr.u6_port = addrin6->sin6_port;
483 /* find existing session for address */
484 cs = GNUNET_CONTAINER_multihashmap_get (plugin->sessions, &pi_in.hashPubKey);
485 /* no existing session, create a new one*/
488 /* create new session object */
489 if ( AF_INET6 == conn_info->client_addr->sin_family)
490 cs = create_session((char *) &ipv6addr, sizeof(struct IPv6HttpAddress),NULL, 0, &pi_in);
491 if ( AF_INET == conn_info->client_addr->sin_family)
492 cs = create_session((char *) &ipv4addr, sizeof(struct IPv4HttpAddress),NULL, 0, &pi_in);
494 /* Insert session into hashmap */
495 GNUNET_CONTAINER_multihashmap_put ( plugin->sessions,
496 &cs->partner.hashPubKey,
498 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
500 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"New Session for peer `%s' inserted\n", GNUNET_i2s(&cs->partner));
503 /* Set closure and update current session*/
504 if (*httpSessionCache == NULL)
506 *httpSessionCache = cs;
507 /* Updating session */
509 memcpy(cs->addr_inbound,conn_info->client_addr, sizeof(struct sockaddr_in));
510 if ( AF_INET == cs->addr_inbound->sin_family)
512 GNUNET_asprintf(&cs->addr_inbound_str,"%s:%u",address,ntohs(cs->addr_inbound->sin_port));
515 if ( AF_INET6 == cs->addr_inbound->sin_family)
517 GNUNET_asprintf(&cs->addr_inbound_str,"[%s]:%u",address,ntohs(cs->addr_inbound->sin_port));
521 if (cs->msgtok==NULL)
522 cs->msgtok = GNUNET_SERVER_mst_create (GNUNET_SERVER_MAX_MESSAGE_SIZE, &messageTokenizerCallback, cs);
524 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Daemon has new an incoming `%s' request from peer `%s'\n",method, GNUNET_i2s(&cs->partner));
528 cs = *httpSessionCache;
530 /* Is it a PUT or a GET request */
531 if ( 0 == strcmp (MHD_HTTP_METHOD_PUT, method) )
534 if ((*upload_data_size == 0) && (cs->is_put_in_progress == GNUNET_NO))
536 if (cs->pending_inbound_msg->pos !=0 )
538 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
539 _("Incoming message from peer `%s', while existing message with %u bytes was not forwarded to transport'\n"),
540 GNUNET_i2s(&cs->partner), cs->pending_inbound_msg->pos);
541 cs->pending_inbound_msg->pos = 0;
544 cs->is_put_in_progress = GNUNET_YES;
545 cs->is_bad_request = GNUNET_NO;
546 cs->is_active = GNUNET_YES;
550 if ((*upload_data_size > 0) && (cs->is_bad_request != GNUNET_YES))
552 if ((*upload_data_size + cs->pending_inbound_msg->pos < cs->pending_inbound_msg->len) && (*upload_data_size + cs->pending_inbound_msg->pos <= GNUNET_SERVER_MAX_MESSAGE_SIZE))
554 /* copy uploaded data to buffer */
555 memcpy(&cs->pending_inbound_msg->buf[cs->pending_inbound_msg->pos],upload_data,*upload_data_size);
556 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"%u bytes forwarded to MST \n",*upload_data_size);
557 res = GNUNET_SERVER_mst_receive(cs->msgtok, cs, upload_data,*upload_data_size, GNUNET_YES, GNUNET_NO);
558 cs->pending_inbound_msg->pos += *upload_data_size;
559 *upload_data_size = 0;
564 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"%u bytes not added to message of %u bytes, message to big\n",*upload_data_size, cs->pending_inbound_msg->pos);
565 cs->is_bad_request = GNUNET_YES;
566 /* (*upload_data_size) bytes not processed */
571 if ((cs->is_put_in_progress == GNUNET_YES) && (cs->is_bad_request == GNUNET_YES))
573 *upload_data_size = 0;
574 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
575 res = MHD_queue_response (session, MHD_HTTP_REQUEST_ENTITY_TOO_LARGE, response);
578 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 413 Request Entity Too Large as PUT Response\n");
579 cs->is_bad_request = GNUNET_NO;
580 cs->is_put_in_progress =GNUNET_NO;
581 cs->pending_inbound_msg->pos = 0;
583 MHD_destroy_response (response);
587 if ((*upload_data_size == 0) && (cs->is_put_in_progress == GNUNET_YES) && (cs->is_bad_request == GNUNET_NO))
589 send_error_to_client = GNUNET_YES;
591 if (cs->pending_inbound_msg->pos >= sizeof (struct GNUNET_MessageHeader))
593 cur_msg = (struct GNUNET_MessageHeader *) cs->pending_inbound_msg->buf;
594 //res = GNUNET_SERVER_mst_receive(cs->msgtok, cs, cs->pending_inbound_msg->buf,cs->pending_inbound_msg->pos, GNUNET_YES, GNUNET_NO);
596 if ((res != GNUNET_SYSERR) && (res != GNUNET_NO))
597 send_error_to_client = GNUNET_NO;
599 if (send_error_to_client == GNUNET_NO)
601 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
602 res = MHD_queue_response (session, MHD_HTTP_OK, response);
603 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 200 OK as PUT Response\n",HTTP_PUT_RESPONSE, strlen (HTTP_PUT_RESPONSE), res );
604 MHD_destroy_response (response);
608 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
609 res = MHD_queue_response (session, MHD_HTTP_BAD_REQUEST, response);
610 MHD_destroy_response (response);
611 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 400 BAD REQUEST as PUT Response\n");
613 cs->is_put_in_progress = GNUNET_NO;
614 cs->is_bad_request = GNUNET_NO;
615 cs->pending_inbound_msg->pos = 0;
619 if ( 0 == strcmp (MHD_HTTP_METHOD_GET, method) )
621 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Got GET Request\n");
622 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"URL: `%s'\n",url);
623 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
624 res = MHD_queue_response (session, MHD_HTTP_OK, response);
625 MHD_destroy_response (response);
633 * Call MHD to process pending requests and then go back
634 * and schedule the next run.
636 static void http_daemon_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
639 * Function that queries MHD's select sets and
640 * starts the task waiting for them.
642 static GNUNET_SCHEDULER_TaskIdentifier
643 http_daemon_prepare (struct MHD_Daemon *daemon_handle)
645 GNUNET_SCHEDULER_TaskIdentifier ret;
649 struct GNUNET_NETWORK_FDSet *wrs;
650 struct GNUNET_NETWORK_FDSet *wws;
651 struct GNUNET_NETWORK_FDSet *wes;
653 unsigned long long timeout;
655 struct GNUNET_TIME_Relative tv;
660 wrs = GNUNET_NETWORK_fdset_create ();
661 wes = GNUNET_NETWORK_fdset_create ();
662 wws = GNUNET_NETWORK_fdset_create ();
664 GNUNET_assert (MHD_YES ==
665 MHD_get_fdset (daemon_handle,
670 haveto = MHD_get_timeout (daemon_handle, &timeout);
671 if (haveto == MHD_YES)
672 tv.value = (uint64_t) timeout;
674 tv = GNUNET_TIME_UNIT_FOREVER_REL;
675 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max);
676 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max);
677 GNUNET_NETWORK_fdset_copy_native (wes, &es, max);
678 ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
679 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
680 GNUNET_SCHEDULER_NO_TASK,
686 GNUNET_NETWORK_fdset_destroy (wrs);
687 GNUNET_NETWORK_fdset_destroy (wws);
688 GNUNET_NETWORK_fdset_destroy (wes);
693 * Call MHD to process pending requests and then go back
694 * and schedule the next run.
696 static void http_daemon_run (void *cls,
697 const struct GNUNET_SCHEDULER_TaskContext *tc)
699 struct MHD_Daemon *daemon_handle = cls;
701 if (daemon_handle == http_daemon_v4)
702 http_task_v4 = GNUNET_SCHEDULER_NO_TASK;
704 if (daemon_handle == http_daemon_v6)
705 http_task_v6 = GNUNET_SCHEDULER_NO_TASK;
707 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
710 GNUNET_assert (MHD_YES == MHD_run (daemon_handle));
711 if (daemon_handle == http_daemon_v4)
712 http_task_v4 = http_daemon_prepare (daemon_handle);
713 if (daemon_handle == http_daemon_v6)
714 http_task_v6 = http_daemon_prepare (daemon_handle);
719 * Removes a message from the linked list of messages
720 * @param ses session to remove message from
721 * @param msg message to remove
722 * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
725 static int remove_http_message(struct Session * ses, struct HTTP_Message * msg)
727 GNUNET_free (msg->buf);
728 GNUNET_free (msg->dest_url);
730 GNUNET_CONTAINER_DLL_remove(ses->pending_outbound_msg_head,ses->pending_outbound_msg_tail,msg);
735 static size_t header_function( void *ptr, size_t size, size_t nmemb, void *stream)
738 size_t len = size * nmemb;
741 if ((size * nmemb) < SIZE_MAX)
742 tmp = GNUNET_malloc (len+1);
744 if ((tmp != NULL) && (len > 0))
749 if (tmp[len-2] == 13)
753 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Header: `%s'\n",tmp);
763 * Callback method used with libcurl
764 * 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 ptr source pointer, passed to the libcurl handle
769 * @return bytes written to stream
771 static size_t send_read_callback(void *stream, size_t size, size_t nmemb, void *ptr)
773 struct Session * ses = ptr;
774 struct HTTP_Message * msg = ses->pending_outbound_msg_tail;
779 if (( msg->pos < msg->len))
781 /* data fit in buffer */
782 if ((msg->len - msg->pos) <= (size * nmemb))
784 len = (msg->len - msg->pos);
785 memcpy(stream, &msg->buf[msg->pos], len);
792 memcpy(stream, &msg->buf[msg->pos], len);
797 /* no data to send */
806 * Callback method used with libcurl
807 * Method is called when libcurl needs to write data during sending
808 * @param stream pointer where to write data
809 * @param size size of an individual element
810 * @param nmemb count of elements that can be written to the buffer
811 * @param ptr destination pointer, passed to the libcurl handle
812 * @return bytes read from stream
814 static size_t send_write_callback( void *stream, size_t size, size_t nmemb, void *ptr)
818 if ((size * nmemb) < SIZE_MAX)
819 data = GNUNET_malloc(size*nmemb +1);
822 memcpy( data, stream, size*nmemb);
823 data[size*nmemb] = '\0';
826 return (size * nmemb);
831 * Function setting up file descriptors and scheduling task to run
832 * @param ses session to send data to
833 * @return bytes sent to peer
835 static size_t send_prepare(struct Session* ses );
838 * Function setting up curl handle and selecting message to send
839 * @param ses session to send data to
840 * @return bytes sent to peer
842 static ssize_t send_select_init (struct Session* ses )
846 struct HTTP_Message * msg;
848 if ( NULL == ses->curl_handle)
849 ses->curl_handle = curl_easy_init();
850 if( NULL == ses->curl_handle)
852 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Getting cURL handle failed\n");
855 GNUNET_assert (NULL != ses->pending_outbound_msg_tail);
856 msg = ses->pending_outbound_msg_tail;
859 curl_easy_setopt(ses->curl_handle, CURLOPT_VERBOSE, 1L);
861 curl_easy_setopt(ses->curl_handle, CURLOPT_URL, msg->dest_url);
862 curl_easy_setopt(ses->curl_handle, CURLOPT_PUT, 1L);
863 curl_easy_setopt(ses->curl_handle, CURLOPT_HEADERFUNCTION, &header_function);
864 curl_easy_setopt(ses->curl_handle, CURLOPT_WRITEHEADER, ses);
865 curl_easy_setopt(ses->curl_handle, CURLOPT_READFUNCTION, send_read_callback);
866 curl_easy_setopt(ses->curl_handle, CURLOPT_READDATA, ses);
867 curl_easy_setopt(ses->curl_handle, CURLOPT_WRITEFUNCTION, send_write_callback);
868 curl_easy_setopt(ses->curl_handle, CURLOPT_READDATA, ses);
869 curl_easy_setopt(ses->curl_handle, CURLOPT_INFILESIZE_LARGE, (curl_off_t) msg->len);
870 curl_easy_setopt(ses->curl_handle, CURLOPT_TIMEOUT, (long) (timeout.value / 1000 ));
871 GNUNET_assert (CURLE_OK == curl_easy_setopt(ses->curl_handle, CURLOPT_PRIVATE, ses));
872 curl_easy_setopt(ses->curl_handle, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT);
873 curl_easy_setopt(ses->curl_handle, CURLOPT_BUFFERSIZE, GNUNET_SERVER_MAX_MESSAGE_SIZE);
875 mret = curl_multi_add_handle(multi_handle, ses->curl_handle);
876 if (mret != CURLM_OK)
878 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
879 _("%s failed at %s:%d: `%s'\n"),
880 "curl_multi_add_handle", __FILE__, __LINE__,
881 curl_multi_strerror (mret));
884 bytes_sent = send_prepare (ses );
888 static void send_execute (void *cls,
889 const struct GNUNET_SCHEDULER_TaskContext *tc)
891 static unsigned int handles_last_run;
895 struct Session * cs = NULL;
898 http_task_send = GNUNET_SCHEDULER_NO_TASK;
899 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
905 mret = curl_multi_perform (multi_handle, &running);
906 if (running < handles_last_run)
911 msg = curl_multi_info_read (multi_handle, &running);
912 GNUNET_break (msg != NULL);
915 /* get session for affected curl handle */
916 GNUNET_assert ( msg->easy_handle != NULL );
917 curl_easy_getinfo(msg->easy_handle, CURLINFO_PRIVATE, &cs);
918 GNUNET_assert ( cs != NULL );
919 GNUNET_assert ( cs->pending_outbound_msg_tail != NULL );
924 if ( (msg->data.result != CURLE_OK) &&
925 (msg->data.result != CURLE_GOT_NOTHING) )
927 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
928 _("%s failed for `%s' at %s:%d: `%s'\n"),
929 "curl_multi_perform",
930 GNUNET_i2s(&cs->partner),
933 curl_easy_strerror (msg->data.result));
934 /* sending msg failed*/
935 if (( NULL != cs->pending_outbound_msg_tail) && ( NULL != cs->pending_outbound_msg_tail->transmit_cont))
936 cs->pending_outbound_msg_tail->transmit_cont (cs->pending_outbound_msg_tail->transmit_cont_cls,&cs->partner,GNUNET_SYSERR);
940 GNUNET_assert (CURLE_OK == curl_easy_getinfo(msg->easy_handle, CURLINFO_RESPONSE_CODE, &http_result));
941 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
942 "Send to peer `%s' completed with code %u\n", GNUNET_i2s(&cs->partner), http_result );
944 curl_easy_cleanup(cs->curl_handle);
945 cs->curl_handle=NULL;
947 /* Calling transmit continuation */
948 if (( NULL != cs->pending_outbound_msg_tail) && (NULL != cs->pending_outbound_msg_tail->transmit_cont))
950 /* HTTP 1xx : Last message before here was informational */
951 if ((http_result >=100) && (http_result < 200))
952 cs->pending_outbound_msg_tail->transmit_cont (cs->pending_outbound_msg_tail->transmit_cont_cls,&cs->partner,GNUNET_OK);
953 /* HTTP 2xx: successful operations */
954 if ((http_result >=200) && (http_result < 300))
955 cs->pending_outbound_msg_tail->transmit_cont (cs->pending_outbound_msg_tail->transmit_cont_cls,&cs->partner,GNUNET_OK);
956 /* HTTP 3xx..5xx: error */
957 if ((http_result >=300) && (http_result < 600))
958 cs->pending_outbound_msg_tail->transmit_cont (cs->pending_outbound_msg_tail->transmit_cont_cls,&cs->partner,GNUNET_SYSERR);
962 if (GNUNET_OK != remove_http_message(cs, cs->pending_outbound_msg_tail))
963 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Message could not be removed from session `%s'", GNUNET_i2s(&cs->partner));
964 /* send pending messages */
965 if (cs->pending_outbound_msg_tail!= NULL)
967 send_select_init (cs);
975 while ( (running > 0) );
977 handles_last_run = running;
979 while (mret == CURLM_CALL_MULTI_PERFORM);
985 * Function setting up file descriptors and scheduling task to run
986 * @param ses session to send data to
987 * @return bytes sent to peer
989 static size_t send_prepare(struct Session* ses )
995 struct GNUNET_NETWORK_FDSet *grs;
996 struct GNUNET_NETWORK_FDSet *gws;
1004 mret = curl_multi_fdset (multi_handle, &rs, &ws, &es, &max);
1005 if (mret != CURLM_OK)
1007 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1008 _("%s failed at %s:%d: `%s'\n"),
1009 "curl_multi_fdset", __FILE__, __LINE__,
1010 curl_multi_strerror (mret));
1013 mret = curl_multi_timeout (multi_handle, &to);
1014 if (mret != CURLM_OK)
1016 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1017 _("%s failed at %s:%d: `%s'\n"),
1018 "curl_multi_timeout", __FILE__, __LINE__,
1019 curl_multi_strerror (mret));
1023 grs = GNUNET_NETWORK_fdset_create ();
1024 gws = GNUNET_NETWORK_fdset_create ();
1025 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
1026 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
1027 http_task_send = GNUNET_SCHEDULER_add_select (plugin->env->sched,
1028 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1029 GNUNET_SCHEDULER_NO_TASK,
1030 GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 0),
1035 GNUNET_NETWORK_fdset_destroy (gws);
1036 GNUNET_NETWORK_fdset_destroy (grs);
1038 /* FIXME: return bytes REALLY sent */
1043 * Function that can be used by the transport service to transmit
1044 * a message using the plugin.
1046 * @param cls closure
1047 * @param target who should receive this message
1048 * @param priority how important is the message
1049 * @param msgbuf the message to transmit
1050 * @param msgbuf_size number of bytes in 'msgbuf'
1051 * @param to when should we time out
1052 * @param session which session must be used (or NULL for "any")
1053 * @param addr the address to use (can be NULL if the plugin
1054 * is "on its own" (i.e. re-use existing TCP connection))
1055 * @param addrlen length of the address in bytes
1056 * @param force_address GNUNET_YES if the plugin MUST use the given address,
1057 * otherwise the plugin may use other addresses or
1058 * existing connections (if available)
1059 * @param cont continuation to call once the message has
1060 * been transmitted (or if the transport is ready
1061 * for the next transmission call; or if the
1062 * peer disconnected...)
1063 * @param cont_cls closure for cont
1064 * @return number of bytes used (on the physical network, with overheads);
1065 * -1 on hard errors (i.e. address invalid); 0 is a legal value
1066 * and does NOT mean that the message was not transmitted (DV)
1069 http_plugin_send (void *cls,
1070 const struct GNUNET_PeerIdentity *target,
1073 unsigned int priority,
1074 struct GNUNET_TIME_Relative to,
1075 struct Session *session,
1079 GNUNET_TRANSPORT_TransmitContinuation cont,
1085 struct HTTP_Message * msg;
1091 cs = GNUNET_CONTAINER_multihashmap_get (plugin->sessions, &target->hashPubKey);
1094 cs = create_session((char *) addr, addrlen, NULL, 0, target);
1095 cs->is_active = GNUNET_YES;
1096 res = GNUNET_CONTAINER_multihashmap_put ( plugin->sessions,
1097 &cs->partner.hashPubKey,
1099 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
1100 if (res == GNUNET_OK)
1101 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1102 "New Session `%s' inserted\n", GNUNET_i2s(target));
1105 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1106 "Session `%s' found\n", GNUNET_i2s(target));
1108 GNUNET_assert ((addr!=NULL) && (addrlen != 0));
1109 if (addrlen == (sizeof (struct IPv4HttpAddress)))
1111 address = GNUNET_malloc(INET_ADDRSTRLEN + 1);
1112 inet_ntop(AF_INET, &((struct IPv4HttpAddress *) addr)->ipv4_addr,address,INET_ADDRSTRLEN);
1113 GNUNET_asprintf (&url,
1116 ntohs(((struct IPv4HttpAddress *) addr)->u_port),
1117 (char *) (&my_ascii_hash_ident));
1118 GNUNET_free(address);
1120 else if (addrlen == (sizeof (struct IPv6HttpAddress)))
1122 address = GNUNET_malloc(INET6_ADDRSTRLEN + 1);
1123 inet_ntop(AF_INET6, &((struct IPv6HttpAddress *) addr)->ipv6_addr,address,INET6_ADDRSTRLEN);
1124 GNUNET_asprintf(&url,
1127 ntohs(((struct IPv6HttpAddress *) addr)->u6_port),
1128 (char *) (&my_ascii_hash_ident));
1129 GNUNET_free(address);
1132 /* setting up message */
1133 msg = GNUNET_malloc (sizeof (struct HTTP_Message));
1135 msg->len = msgbuf_size;
1137 msg->buf = GNUNET_malloc (msgbuf_size);
1138 msg->dest_url = url;
1139 msg->transmit_cont = cont;
1140 msg->transmit_cont_cls = cont_cls;
1141 memcpy (msg->buf,msgbuf, msgbuf_size);
1142 /* insert created message in double linked list of pending messages */
1143 GNUNET_CONTAINER_DLL_insert (cs->pending_outbound_msg_head, cs->pending_outbound_msg_tail, msg);
1145 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Plugin: sending %u bytes of data from peer `%4.4s' to peer `%s'\n",msgbuf_size,(char *) &my_ascii_hash_ident,GNUNET_i2s(target));
1146 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Plugin: url `%s'\n",url);
1147 if (msg == cs->pending_outbound_msg_tail)
1149 return send_select_init (cs);
1157 * Function that can be used to force the plugin to disconnect
1158 * from the given peer and cancel all previous transmissions
1159 * (and their continuationc).
1161 * @param cls closure
1162 * @param target peer from which to disconnect
1165 http_plugin_disconnect (void *cls,
1166 const struct GNUNET_PeerIdentity *target)
1168 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Plugin: http_plugin_disconnect\n");
1169 // struct Plugin *plugin = cls;
1175 * Convert the transports address to a nice, human-readable
1178 * @param cls closure
1179 * @param type name of the transport that generated the address
1180 * @param addr one of the addresses of the host, NULL for the last address
1181 * the specific address format depends on the transport
1182 * @param addrlen length of the address
1183 * @param numeric should (IP) addresses be displayed in numeric form?
1184 * @param timeout after how long should we give up?
1185 * @param asc function to call on each string
1186 * @param asc_cls closure for asc
1189 http_plugin_address_pretty_printer (void *cls,
1194 struct GNUNET_TIME_Relative timeout,
1195 GNUNET_TRANSPORT_AddressStringCallback
1198 const struct IPv4HttpAddress *t4;
1199 const struct IPv6HttpAddress *t6;
1200 struct sockaddr_in a4;
1201 struct sockaddr_in6 a6;
1207 if (addrlen == sizeof (struct IPv6HttpAddress))
1209 address = GNUNET_malloc (INET6_ADDRSTRLEN);
1211 a6.sin6_addr = t6->ipv6_addr;
1212 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
1213 port = ntohs(t6->u6_port);
1215 else if (addrlen == sizeof (struct IPv4HttpAddress))
1217 address = GNUNET_malloc (INET_ADDRSTRLEN);
1219 a4.sin_addr.s_addr = t4->ipv4_addr;
1220 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
1221 port = ntohs(t4->u_port);
1225 /* invalid address */
1226 GNUNET_break_op (0);
1227 asc (asc_cls, NULL);
1230 res = GNUNET_asprintf(&ret,"http://%s:%u/",address,port);
1231 GNUNET_free (address);
1232 GNUNET_assert(res != 0);
1240 * Another peer has suggested an address for this
1241 * peer and transport plugin. Check that this could be a valid
1242 * address. If so, consider adding it to the list
1245 * @param cls closure
1246 * @param addr pointer to the address
1247 * @param addrlen length of addr
1248 * @return GNUNET_OK if this is a plausible address for this peer
1252 http_plugin_address_suggested (void *cls,
1253 void *addr, size_t addrlen)
1255 struct IPv4HttpAddress *v4;
1256 struct IPv6HttpAddress *v6;
1259 if ((addrlen != sizeof (struct IPv4HttpAddress)) &&
1260 (addrlen != sizeof (struct IPv6HttpAddress)))
1262 return GNUNET_SYSERR;
1264 if (addrlen == sizeof (struct IPv4HttpAddress))
1266 v4 = (struct IPv4HttpAddress *) addr;
1267 if (INADDR_LOOPBACK == ntohl(v4->ipv4_addr))
1269 return GNUNET_SYSERR;
1271 port = ntohs (v4->u_port);
1272 if (port != plugin->port_inbound)
1274 return GNUNET_SYSERR;
1279 v6 = (struct IPv6HttpAddress *) addr;
1280 if (IN6_IS_ADDR_LINKLOCAL (&v6->ipv6_addr))
1282 return GNUNET_SYSERR;
1284 port = ntohs (v6->u6_port);
1285 if (port != plugin->port_inbound)
1287 return GNUNET_SYSERR;
1297 * Function called for a quick conversion of the binary address to
1298 * a numeric address. Note that the caller must not free the
1299 * address and that the next call to this function is allowed
1300 * to override the address again.
1302 * @param cls closure
1303 * @param addr binary address
1304 * @param addrlen length of the address
1305 * @return string representing the same address
1308 http_plugin_address_to_string (void *cls,
1312 const struct IPv4HttpAddress *t4;
1313 const struct IPv6HttpAddress *t6;
1314 struct sockaddr_in a4;
1315 struct sockaddr_in6 a6;
1321 if (addrlen == sizeof (struct IPv6HttpAddress))
1323 address = GNUNET_malloc (INET6_ADDRSTRLEN);
1325 a6.sin6_addr = t6->ipv6_addr;
1326 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
1327 port = ntohs(t6->u6_port);
1329 else if (addrlen == sizeof (struct IPv4HttpAddress))
1331 address = GNUNET_malloc (INET_ADDRSTRLEN);
1333 a4.sin_addr.s_addr = t4->ipv4_addr;
1334 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
1335 port = ntohs(t4->u_port);
1339 /* invalid address */
1342 res = GNUNET_asprintf(&ret,"%s:%u",address,port);
1343 GNUNET_free (address);
1344 GNUNET_assert(res != 0);
1349 * Add the IP of our network interface to the list of
1350 * our external IP addresses.
1352 * @param cls the 'struct Plugin*'
1353 * @param name name of the interface
1354 * @param isDefault do we think this may be our default interface
1355 * @param addr address of the interface
1356 * @param addrlen number of bytes in addr
1357 * @return GNUNET_OK to continue iterating
1360 process_interfaces (void *cls,
1363 const struct sockaddr *addr, socklen_t addrlen)
1365 struct IPv4HttpAddress t4;
1366 struct IPv6HttpAddress t6;
1371 af = addr->sa_family;
1374 if (INADDR_LOOPBACK == ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr))
1376 /* skip loopback addresses */
1379 t4.ipv4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
1380 t4.u_port = htons (plugin->port_inbound);
1384 else if (af == AF_INET6)
1386 if (IN6_IS_ADDR_LINKLOCAL (&((struct sockaddr_in6 *) addr)->sin6_addr))
1388 /* skip link local addresses */
1391 if (IN6_IS_ADDR_LOOPBACK (&((struct sockaddr_in6 *) addr)->sin6_addr))
1393 /* skip loopback addresses */
1396 memcpy (&t6.ipv6_addr,
1397 &((struct sockaddr_in6 *) addr)->sin6_addr,
1398 sizeof (struct in6_addr));
1399 t6.u6_port = htons (plugin->port_inbound);
1408 plugin->env->notify_address(plugin->env->cls,"http",arg, args, GNUNET_TIME_UNIT_FOREVER_REL);
1412 int hashMapFreeIterator (void *cls, const GNUNET_HashCode *key, void *value)
1414 struct Session * cs = value;
1416 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Freeing session for peer `%s'\n",GNUNET_i2s(&cs->partner));
1418 /* freeing messages */
1419 struct HTTP_Message *cur;
1420 struct HTTP_Message *tmp;
1421 cur = cs->pending_outbound_msg_head;
1426 GNUNET_free_non_null(cur->dest_url);
1427 GNUNET_free_non_null (cur->buf);
1431 GNUNET_SERVER_mst_destroy (cs->msgtok);
1432 GNUNET_free (cs->pending_inbound_msg->buf);
1433 GNUNET_free (cs->pending_inbound_msg);
1434 GNUNET_free_non_null (cs->addr_in);
1435 GNUNET_free_non_null (cs->addr_out);
1442 * Exit point from the plugin.
1445 libgnunet_plugin_transport_http_done (void *cls)
1447 struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
1448 struct Plugin *plugin = api->cls;
1451 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Unloading http plugin...\n");
1453 if ( http_task_v4 != GNUNET_SCHEDULER_NO_TASK)
1455 GNUNET_SCHEDULER_cancel(plugin->env->sched, http_task_v4);
1456 http_task_v4 = GNUNET_SCHEDULER_NO_TASK;
1459 if ( http_task_v6 != GNUNET_SCHEDULER_NO_TASK)
1461 GNUNET_SCHEDULER_cancel(plugin->env->sched, http_task_v6);
1462 http_task_v6 = GNUNET_SCHEDULER_NO_TASK;
1465 if ( http_task_send != GNUNET_SCHEDULER_NO_TASK)
1467 GNUNET_SCHEDULER_cancel(plugin->env->sched, http_task_send);
1468 http_task_send = GNUNET_SCHEDULER_NO_TASK;
1471 if (http_daemon_v4 != NULL)
1473 MHD_stop_daemon (http_daemon_v4);
1474 http_daemon_v4 = NULL;
1476 if (http_daemon_v6 != NULL)
1478 MHD_stop_daemon (http_daemon_v6);
1479 http_daemon_v6 = NULL;
1482 /* free all sessions */
1483 GNUNET_CONTAINER_multihashmap_iterate (plugin->sessions,
1484 &hashMapFreeIterator,
1487 GNUNET_CONTAINER_multihashmap_destroy (plugin->sessions);
1489 mret = curl_multi_cleanup(multi_handle);
1490 if ( CURLM_OK != mret)
1491 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"curl multihandle clean up failed");
1493 GNUNET_free (plugin);
1500 * Entry point for the plugin.
1503 libgnunet_plugin_transport_http_init (void *cls)
1505 struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
1506 struct GNUNET_TRANSPORT_PluginFunctions *api;
1507 unsigned int timeout;
1508 struct GNUNET_TIME_Relative gn_timeout;
1509 long long unsigned int port;
1511 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting http plugin...\n");
1513 plugin = GNUNET_malloc (sizeof (struct Plugin));
1515 plugin->sessions = NULL;
1516 api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
1518 api->send = &http_plugin_send;
1519 api->disconnect = &http_plugin_disconnect;
1520 api->address_pretty_printer = &http_plugin_address_pretty_printer;
1521 api->check_address = &http_plugin_address_suggested;
1522 api->address_to_string = &http_plugin_address_to_string;
1524 /* Hashing our identity to use it in URLs */
1525 GNUNET_CRYPTO_hash_to_enc ( &(plugin->env->my_identity->hashPubKey), &my_ascii_hash_ident);
1527 /* Reading port number from config file */
1529 GNUNET_CONFIGURATION_get_value_number (env->cfg,
1535 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
1538 ("Require valid port number for transport plugin `%s' in configuration!\n"),
1540 libgnunet_plugin_transport_http_done (api);
1543 GNUNET_assert ((port > 0) && (port <= 65535));
1544 plugin->port_inbound = port;
1545 gn_timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
1546 timeout = ( gn_timeout.value / 1000);
1547 if ((http_daemon_v4 == NULL) && (http_daemon_v6 == NULL) && (port != 0))
1549 http_daemon_v6 = MHD_start_daemon (MHD_USE_IPv6,
1551 &acceptPolicyCallback,
1552 NULL , &accessHandlerCallback, NULL,
1553 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
1554 MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
1555 MHD_OPTION_CONNECTION_TIMEOUT, timeout,
1556 /* FIXME: set correct limit */
1557 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
1558 MHD_OPTION_NOTIFY_COMPLETED, &requestCompletedCallback, NULL,
1560 http_daemon_v4 = MHD_start_daemon (MHD_NO_FLAG,
1562 &acceptPolicyCallback,
1563 NULL , &accessHandlerCallback, NULL,
1564 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
1565 MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
1566 MHD_OPTION_CONNECTION_TIMEOUT, timeout,
1567 /* FIXME: set correct limit */
1568 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
1569 MHD_OPTION_NOTIFY_COMPLETED, &requestCompletedCallback, NULL,
1572 if (http_daemon_v4 != NULL)
1573 http_task_v4 = http_daemon_prepare (http_daemon_v4);
1574 if (http_daemon_v6 != NULL)
1575 http_task_v6 = http_daemon_prepare (http_daemon_v6);
1577 if (http_task_v4 != GNUNET_SCHEDULER_NO_TASK)
1578 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 on port %u\n",port);
1579 else if (http_task_v6 != GNUNET_SCHEDULER_NO_TASK)
1580 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 and IPv6 on port %u\n",port);
1583 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No MHD was started, transport plugin not functional!\n");
1584 libgnunet_plugin_transport_http_done (api);
1588 /* Initializing cURL */
1589 multi_handle = curl_multi_init();
1590 if ( NULL == multi_handle )
1592 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
1594 _("Could not initialize curl multi handle, failed to start http plugin!\n"),
1596 libgnunet_plugin_transport_http_done (api);
1600 plugin->sessions = GNUNET_CONTAINER_multihashmap_create (10);
1601 GNUNET_OS_network_interfaces_list (&process_interfaces, plugin);
1606 /* end of plugin_transport_http.c */