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_template.c
23 * @brief template for a new transport service
24 * @author Christian Grothoff
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 "plugin_transport.h"
37 #include "gnunet_os_lib.h"
38 #include "microhttpd.h"
39 #include <curl/curl.h>
42 #define DEBUG_CURL GNUNET_CURL
43 #define DEBUG_HTTP GNUNET_NO
46 * Text of the response sent back after the last bytes of a PUT
47 * request have been received (just to formally obey the HTTP
50 #define HTTP_PUT_RESPONSE "Thank you!"
53 * After how long do we expire an address that we
54 * learned from another peer if it is not reconfirmed
57 #define LEARNED_ADDRESS_EXPIRATION GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 6)
60 * Page returned if request invalid
62 #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>"
65 * Timeout for a http connect
67 #define HTTP_CONNECT_TIMEOUT 30
70 * Timeout for a http connect
72 #define HTTP_MESSAGE_INITIAL_BUFFERSIZE GNUNET_SERVER_MAX_MESSAGE_SIZE
76 * Encapsulation of all of the state of the plugin.
81 * Network format for IPv4 addresses.
83 struct IPv4HttpAddress
86 * IPv4 address, in network byte order.
91 * Port number, in network byte order.
99 * Network format for IPv6 addresses.
101 struct IPv6HttpAddress
106 struct in6_addr ipv6_addr;
109 * Port number, in network byte order.
118 * Message to send using http
123 * Next field for linked list
125 struct HTTP_Message * next;
128 * buffer containing data to send
133 * amount of data already sent
138 * amount of data to sent
145 * Continuation function to call once the transmission buffer
146 * has again space available. NULL if there is no
147 * continuation to call.
149 GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
152 * Closure for transmit_cont.
154 void *transmit_cont_cls;
159 * Session handle for connections.
165 * Stored in a linked list.
167 struct Session *next;
170 * Pointer to the global plugin struct.
172 struct Plugin *plugin;
175 * To whom are we talking to (set to our identity
176 * if we are still waiting for the welcome message)
178 struct GNUNET_PeerIdentity sender;
186 * Sender's ip address to distinguish between incoming connections
191 * Sender's ip address to distinguish between incoming connections
193 struct sockaddr_in * addr_inbound;
196 * Sender's ip address recieved by transport
198 struct sockaddr_in * addr_outbound;
201 * Did we initiate the connection (GNUNET_YES) or the other peer (GNUNET_NO)?
203 unsigned int is_client;
206 * Is the connection active (GNUNET_YES) or terminated (GNUNET_NO)?
208 unsigned int is_active;
211 * At what time did we reset last_received last?
213 struct GNUNET_TIME_Absolute last_quota_update;
216 * How many bytes have we received since the "last_quota_update"
219 uint64_t last_received;
222 * Number of bytes per ms that this peer is allowed
228 * Is there a HTTP/PUT in progress?
230 unsigned int is_put_in_progress;
233 * Is there a HTTP/PUT in progress?
235 unsigned int is_bad_request;
240 struct GNUNET_CRYPTO_HashAsciiEncoded hash;
242 struct HTTP_Message * pending_outbound_msg;;
244 struct HTTP_Message * pending_inbound_msg;
250 * Encapsulation of all of the state of the plugin.
257 struct GNUNET_TRANSPORT_PluginEnvironment *env;
260 * Handle to the network service.
262 struct GNUNET_SERVICE_Context *service;
264 unsigned int port_inbound;
267 * List of open sessions.
269 struct Session *sessions;
272 * Number of active sessions
275 unsigned int session_count;
279 * Daemon for listening for new IPv4 connections.
281 static struct MHD_Daemon *http_daemon_v4;
284 * Daemon for listening for new IPv6connections.
286 static struct MHD_Daemon *http_daemon_v6;
289 * Our primary task for http daemon handling IPv4 connections
291 static GNUNET_SCHEDULER_TaskIdentifier http_task_v4;
294 * Our primary task for http daemon handling IPv6 connections
296 static GNUNET_SCHEDULER_TaskIdentifier http_task_v6;
300 * The task sending data
302 static GNUNET_SCHEDULER_TaskIdentifier http_task_send;
306 * Information about this plugin
308 static struct Plugin *plugin;
313 static CURLM *multi_handle;
318 static char * hostname;
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 struct GNUNET_TIME_Relative timeout;
329 * Finds a http session in our linked list using peer identity as a key
330 * @param peer peeridentity
331 * @return http session corresponding to peer identity
333 static struct Session * find_session_by_pi( const struct GNUNET_PeerIdentity *peer )
335 struct Session * cur;
336 GNUNET_HashCode hc_peer;
337 GNUNET_HashCode hc_current;
339 cur = plugin->sessions;
340 hc_peer = peer->hashPubKey;
343 hc_current = cur->sender.hashPubKey;
344 if ( 0 == GNUNET_CRYPTO_hash_cmp( &hc_peer, &hc_current))
346 cur = plugin->sessions->next;
352 * Finds a http session in our linked list using libcurl handle as a key
353 * Needed when sending data with libcurl to differentiate between sessions
354 * @param handle peeridentity
355 * @return http session corresponding to peer identity
357 static struct Session * find_session_by_curlhandle( CURL* handle )
359 struct Session * cur;
361 cur = plugin->sessions;
364 if ( handle == cur->curl_handle )
366 cur = plugin->sessions->next;
372 * Create a new session
374 * @param address address the peer is using inbound
375 * @param address address the peer is using outbound
376 * @param peer identity
377 * @return created session object
379 static struct Session * create_session (struct sockaddr_in *addr_in, struct sockaddr_in *addr_out, const struct GNUNET_PeerIdentity *peer)
381 struct sockaddr_in *addrin;
382 struct sockaddr_in6 *addrin6;
383 struct Session * ses = GNUNET_malloc ( sizeof( struct Session) );
385 ses->addr_inbound = GNUNET_malloc ( sizeof (struct sockaddr_in) );
386 ses->addr_outbound = GNUNET_malloc ( sizeof (struct sockaddr_in) );
389 ses->plugin = plugin;
393 memcpy(ses->addr_inbound, addr_in, sizeof (struct sockaddr_in));
394 if ( AF_INET == addr_in->sin_family)
396 ses->ip = GNUNET_malloc (INET_ADDRSTRLEN);
398 inet_ntop(addrin->sin_family,&(addrin->sin_addr),ses->ip,INET_ADDRSTRLEN);
400 if ( AF_INET6 == addr_in->sin_family)
402 ses->ip = GNUNET_malloc (INET6_ADDRSTRLEN);
403 addrin6 = (struct sockaddr_in6 *) addr_in;
404 inet_ntop(addrin6->sin6_family, &(addrin6->sin6_addr) ,ses->ip,INET6_ADDRSTRLEN);
407 if (NULL != addr_out)
409 memcpy(ses->addr_outbound, addr_out, sizeof (struct sockaddr_in));
412 memcpy(&ses->sender, peer, sizeof (struct GNUNET_PeerIdentity));
413 GNUNET_CRYPTO_hash_to_enc(&ses->sender.hashPubKey,&(ses->hash));
414 ses->is_active = GNUNET_NO;
415 ses->pending_inbound_msg = GNUNET_malloc( sizeof (struct HTTP_Message));
416 ses->pending_inbound_msg->buf = GNUNET_malloc(GNUNET_SERVER_MAX_MESSAGE_SIZE);
417 ses->pending_inbound_msg->len = GNUNET_SERVER_MAX_MESSAGE_SIZE;
418 ses->pending_inbound_msg->pos = 0;
425 * Callback called by MHD when a connection is terminated
427 static void requestCompletedCallback (void *cls, struct MHD_Connection * connection, void **httpSessionCache)
431 cs = *httpSessionCache;
434 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection from peer `%s' was terminated\n",GNUNET_i2s(&cs->sender));
435 /* session set to inactive */
436 cs->is_active = GNUNET_NO;
437 cs->is_put_in_progress = GNUNET_NO;
443 * Check if we are allowed to connect to the given IP.
446 acceptPolicyCallback (void *cls,
447 const struct sockaddr *addr, socklen_t addr_len)
449 /* Every connection is accepted, nothing more to do here */
457 * Process GET or PUT request received via MHD. For
458 * GET, queue response that will send back our pending
459 * messages. For PUT, process incoming data and send
460 * to GNUnet core. In either case, check if a session
461 * already exists and create a new one if not.
464 accessHandlerCallback (void *cls,
465 struct MHD_Connection *session,
469 const char *upload_data,
470 size_t * upload_data_size, void **httpSessionCache)
472 struct MHD_Response *response;
474 struct Session * cs_temp;
475 const union MHD_ConnectionInfo * conn_info;
476 struct sockaddr_in *addrin;
477 struct sockaddr_in6 *addrin6;
478 char * address = NULL;
479 struct GNUNET_PeerIdentity pi_in;
481 struct GNUNET_MessageHeader *gn_msg;
482 int send_error_to_client;
485 send_error_to_client = GNUNET_NO;
487 if ( NULL == *httpSessionCache)
489 /* check url for peer identity */
490 res = GNUNET_CRYPTO_hash_from_string ( &url[1], &(pi_in.hashPubKey));
491 if ( GNUNET_SYSERR == res )
493 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident\n");
494 response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
495 res = MHD_queue_response (session, MHD_HTTP_NOT_FOUND, response);
496 MHD_destroy_response (response);
500 conn_info = MHD_get_connection_info(session, MHD_CONNECTION_INFO_CLIENT_ADDRESS );
501 /* Incoming IPv4 connection */
502 if ( AF_INET == conn_info->client_addr->sin_family)
504 address = GNUNET_malloc (INET_ADDRSTRLEN);
505 addrin = conn_info->client_addr;
506 inet_ntop(addrin->sin_family, &(addrin->sin_addr),address,INET_ADDRSTRLEN);
508 /* Incoming IPv6 connection */
509 if ( AF_INET6 == conn_info->client_addr->sin_family)
511 address = GNUNET_malloc (INET6_ADDRSTRLEN);
512 addrin6 = (struct sockaddr_in6 *) conn_info->client_addr;
513 inet_ntop(addrin6->sin6_family, &(addrin6->sin6_addr),address,INET6_ADDRSTRLEN);
515 /* find existing session for address */
517 if (plugin->session_count > 0)
519 cs = plugin->sessions;
523 /* Comparison based on ip address */
524 // res = (0 == memcmp(&(conn_info->client_addr->sin_addr),&(cs->addr->sin_addr), sizeof (struct in_addr))) ? GNUNET_YES : GNUNET_NO;
526 /* Comparison based on ip address, port number and address family */
527 // res = (0 == memcmp((conn_info->client_addr),(cs->addr), sizeof (struct sockaddr_in))) ? GNUNET_YES : GNUNET_NO;
529 /* Comparison based on PeerIdentity */
530 res = (0 == memcmp(&pi_in,&(cs->sender), sizeof (struct GNUNET_PeerIdentity))) ? GNUNET_YES : GNUNET_NO;
532 if ( GNUNET_YES == res)
534 /* existing session for this address found */
535 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session for peer `%s' found\n",GNUNET_i2s(&cs->sender));
541 /* no existing session, create a new one*/
544 /* create new session object */
545 cs = create_session(conn_info->client_addr, NULL, &pi_in);
547 /* Insert session into linked list */
548 if ( plugin->sessions == NULL)
550 plugin->sessions = cs;
551 plugin->session_count = 1;
553 cs_temp = plugin->sessions;
554 while ( cs_temp->next != NULL )
556 cs_temp = cs_temp->next;
561 plugin->session_count++;
563 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"New Session `%s' inserted, count %u \n", address, plugin->session_count);
565 /* Updating session */
566 memcpy(cs->addr_inbound,addrin, sizeof(struct sockaddr_in));
569 if (*httpSessionCache == NULL)
571 *httpSessionCache = cs;
573 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Daemon has new an incoming `%s' request from peer `%s' (`[%s]:%u')\n",method, GNUNET_i2s(&cs->sender),cs->ip,cs->addr_inbound->sin_port);
577 cs = *httpSessionCache;
579 /* Is it a PUT or a GET request */
580 if ( 0 == strcmp (MHD_HTTP_METHOD_PUT, method) )
583 if ((*upload_data_size == 0) && (cs->is_put_in_progress == GNUNET_NO))
585 if (cs->pending_inbound_msg->pos !=0 )
587 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
588 _("Incoming message from peer `%s', while existing message with %u bytes was not forwarded to transport'\n"),
589 GNUNET_i2s(&cs->sender), cs->pending_inbound_msg->pos);
590 cs->pending_inbound_msg->pos = 0;
593 cs->is_put_in_progress = GNUNET_YES;
594 cs->is_bad_request = GNUNET_NO;
595 cs->is_active = GNUNET_YES;
599 if ((*upload_data_size > 0) && (cs->is_bad_request != GNUNET_YES))
601 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))
603 /* copy uploaded data to buffer */
604 memcpy(&cs->pending_inbound_msg->buf[cs->pending_inbound_msg->pos],upload_data,*upload_data_size);
605 cs->pending_inbound_msg->pos += *upload_data_size;
606 *upload_data_size = 0;
611 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);
612 cs->is_bad_request = GNUNET_YES;
613 /* (*upload_data_size) bytes not processed */
618 if ((cs->is_put_in_progress == GNUNET_YES) && (cs->is_bad_request == GNUNET_YES))
620 *upload_data_size = 0;
621 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
622 res = MHD_queue_response (session, MHD_HTTP_REQUEST_ENTITY_TOO_LARGE, response);
625 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 413 ENTITY TOO LARGE as PUT Response\n");
626 cs->is_bad_request = GNUNET_NO;
627 cs->is_put_in_progress =GNUNET_NO;
629 MHD_destroy_response (response);
633 if ((*upload_data_size == 0) && (cs->is_put_in_progress == GNUNET_YES) && (cs->is_bad_request == GNUNET_NO))
635 send_error_to_client = GNUNET_YES;
636 struct GNUNET_MessageHeader * gn_msg = NULL;
637 /*check message and forward here */
639 if (cs->pending_inbound_msg->pos >= sizeof (struct GNUNET_MessageHeader))
641 gn_msg = GNUNET_malloc (cs->pending_inbound_msg->pos);
642 memcpy (gn_msg,cs->pending_inbound_msg->buf,cs->pending_inbound_msg->pos);
644 if ((ntohs(gn_msg->size) == cs->pending_inbound_msg->pos))
646 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Recieved GNUnet message type %u size %u and payload %u \n",ntohs (gn_msg->type), ntohs (gn_msg->size), ntohs (gn_msg->size)-sizeof(struct GNUNET_MessageHeader));
647 /* forwarding message to transport */
648 plugin->env->receive(plugin->env, &(cs->sender), gn_msg, 1, cs , cs->ip, strlen(cs->ip) );
649 send_error_to_client = GNUNET_NO;
653 if (send_error_to_client == GNUNET_NO)
655 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
656 res = MHD_queue_response (session, MHD_HTTP_OK, response);
657 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 200 OK as PUT Response\n",HTTP_PUT_RESPONSE, strlen (HTTP_PUT_RESPONSE), res );
658 MHD_destroy_response (response);
662 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Recieved malformed message with %u bytes\n", cs->pending_inbound_msg->pos);
663 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
664 res = MHD_queue_response (session, MHD_HTTP_BAD_REQUEST, response);
665 MHD_destroy_response (response);
666 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 400 BAD REQUEST as PUT Response\n");
669 GNUNET_free_non_null (gn_msg);
670 cs->is_put_in_progress = GNUNET_NO;
671 cs->is_bad_request = GNUNET_NO;
672 cs->pending_inbound_msg->pos = 0;
676 if ( 0 == strcmp (MHD_HTTP_METHOD_GET, method) )
678 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Got GET Request\n");
679 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"URL: `%s'\n",url);
680 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
681 res = MHD_queue_response (session, MHD_HTTP_OK, response);
682 MHD_destroy_response (response);
690 * Call MHD to process pending requests and then go back
691 * and schedule the next run.
693 static void http_daemon_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
696 * Function that queries MHD's select sets and
697 * starts the task waiting for them.
699 static GNUNET_SCHEDULER_TaskIdentifier
700 http_daemon_prepare (struct MHD_Daemon *daemon_handle)
702 GNUNET_SCHEDULER_TaskIdentifier ret;
706 struct GNUNET_NETWORK_FDSet *wrs;
707 struct GNUNET_NETWORK_FDSet *wws;
708 struct GNUNET_NETWORK_FDSet *wes;
710 unsigned long long timeout;
712 struct GNUNET_TIME_Relative tv;
717 wrs = GNUNET_NETWORK_fdset_create ();
718 wes = GNUNET_NETWORK_fdset_create ();
719 wws = GNUNET_NETWORK_fdset_create ();
721 GNUNET_assert (MHD_YES ==
722 MHD_get_fdset (daemon_handle,
727 haveto = MHD_get_timeout (daemon_handle, &timeout);
728 if (haveto == MHD_YES)
729 tv.value = (uint64_t) timeout;
731 tv = GNUNET_TIME_UNIT_FOREVER_REL;
732 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max);
733 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max);
734 GNUNET_NETWORK_fdset_copy_native (wes, &es, max);
735 ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
736 GNUNET_SCHEDULER_PRIORITY_HIGH,
737 GNUNET_SCHEDULER_NO_TASK,
743 GNUNET_NETWORK_fdset_destroy (wrs);
744 GNUNET_NETWORK_fdset_destroy (wws);
745 GNUNET_NETWORK_fdset_destroy (wes);
750 * Call MHD to process pending requests and then go back
751 * and schedule the next run.
753 static void http_daemon_run (void *cls,
754 const struct GNUNET_SCHEDULER_TaskContext *tc)
756 struct MHD_Daemon *daemon_handle = cls;
758 if (daemon_handle == http_daemon_v4)
759 http_task_v4 = GNUNET_SCHEDULER_NO_TASK;
761 if (daemon_handle == http_daemon_v6)
762 http_task_v6 = GNUNET_SCHEDULER_NO_TASK;
764 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
767 GNUNET_assert (MHD_YES == MHD_run (daemon_handle));
768 if (daemon_handle == http_daemon_v4)
769 http_task_v4 = http_daemon_prepare (daemon_handle);
770 if (daemon_handle == http_daemon_v6)
771 http_task_v6 = http_daemon_prepare (daemon_handle);
776 * Removes a message from the linked list of messages
777 * @param ses session to remove message from
778 * @param msg message to remove
779 * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
782 static int remove_http_message(struct Session * ses, struct HTTP_Message * msg)
784 struct HTTP_Message * cur;
785 struct HTTP_Message * next;
787 cur = ses->pending_outbound_msg;
791 return GNUNET_SYSERR;
795 ses->pending_outbound_msg = cur->next;
796 GNUNET_free (cur->buf);
797 GNUNET_free (cur->dest_url);
803 while (cur->next!=msg)
805 if (cur->next != NULL)
808 return GNUNET_SYSERR;
811 cur->next = cur->next->next;
812 GNUNET_free (cur->next->buf);
813 GNUNET_free (cur->next->dest_url);
814 GNUNET_free (cur->next);
820 static size_t header_function( void *ptr, size_t size, size_t nmemb, void *stream)
823 unsigned int len = size * nmemb;
825 tmp = GNUNET_malloc ( len+1 );
827 if (tmp[len-2] == 13)
830 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Header: `%s'\n",tmp);
833 if (0==strcmp (tmp,"HTTP/1.1 100 Continue"))
835 res->http_result_code=100;
837 if (0==strcmp (tmp,"HTTP/1.1 200 OK"))
839 res->http_result_code=200;
841 if (0==strcmp (tmp,"HTTP/1.1 400 Bad Request"))
843 res->http_result_code=400;
845 if (0==strcmp (tmp,"HTTP/1.1 404 Not Found"))
847 res->http_result_code=404;
849 if (0==strcmp (tmp,"HTTP/1.1 413 Request entity too large"))
851 res->http_result_code=413;
859 * Callback method used with libcurl
860 * Method is called when libcurl needs to read data during sending
861 * @param stream pointer where to write data
862 * @param size size of an individual element
863 * @param nmemb count of elements that can be written to the buffer
864 * @param ptr source pointer, passed to the libcurl handle
865 * @return bytes written to stream
867 static size_t send_read_callback(void *stream, size_t size, size_t nmemb, void *ptr)
869 struct Session * ses = ptr;
870 struct HTTP_Message * msg = ses->pending_outbound_msg;
871 unsigned int bytes_sent;
874 if (msg->len > (size * nmemb))
875 return CURL_READFUNC_ABORT;
877 if (( msg->pos < msg->len) && (msg->len < (size * nmemb)))
879 memcpy(stream, msg->buf, msg->len);
881 bytes_sent = msg->len;
888 * Callback method used with libcurl
889 * Method is called when libcurl needs to write data during sending
890 * @param stream pointer where to write data
891 * @param size size of an individual element
892 * @param nmemb count of elements that can be written to the buffer
893 * @param ptr destination pointer, passed to the libcurl handle
894 * @return bytes read from stream
896 static size_t send_write_callback( void *stream, size_t size, size_t nmemb, void *ptr)
898 char * data = malloc(size*nmemb +1);
900 memcpy( data, stream, size*nmemb);
901 data[size*nmemb] = '\0';
902 /* Just a dummy print for the response recieved for the PUT message */
903 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Recieved %u bytes: `%s' \n", size * nmemb, data);
905 return (size * nmemb);
910 * Function setting up file descriptors and scheduling task to run
911 * @param session session to send data to
912 * @return bytes sent to peer
914 static size_t send_prepare(struct Session* session );
917 * Function setting up curl handle and selecting message to send
918 * @param ses session to send data to
919 * @return bytes sent to peer
921 static ssize_t send_select_init (struct Session* ses )
925 struct HTTP_Message * msg;
927 if ( NULL == ses->curl_handle)
928 ses->curl_handle = curl_easy_init();
929 if( NULL == ses->curl_handle)
931 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Getting cURL handle failed\n");
934 msg = ses->pending_outbound_msg;
939 curl_easy_setopt(ses->curl_handle, CURLOPT_VERBOSE, 1L);
941 curl_easy_setopt(ses->curl_handle, CURLOPT_URL, msg->dest_url);
942 curl_easy_setopt(ses->curl_handle, CURLOPT_PUT, 1L);
943 curl_easy_setopt(ses->curl_handle, CURLOPT_HEADERFUNCTION, &header_function);
944 curl_easy_setopt(ses->curl_handle, CURLOPT_READFUNCTION, send_read_callback);
945 curl_easy_setopt(ses->curl_handle, CURLOPT_READDATA, ses);
946 curl_easy_setopt(ses->curl_handle, CURLOPT_WRITEFUNCTION, send_write_callback);
947 curl_easy_setopt(ses->curl_handle, CURLOPT_READDATA, ses);
948 curl_easy_setopt(ses->curl_handle, CURLOPT_INFILESIZE_LARGE, (curl_off_t) msg->len);
949 curl_easy_setopt(ses->curl_handle, CURLOPT_TIMEOUT, (long) (timeout.value / 1000 ));
950 curl_easy_setopt(ses->curl_handle, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT);
952 mret = curl_multi_add_handle(multi_handle, ses->curl_handle);
953 if (mret != CURLM_OK)
955 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
956 _("%s failed at %s:%d: `%s'\n"),
957 "curl_multi_add_handle", __FILE__, __LINE__,
958 curl_multi_strerror (mret));
961 bytes_sent = send_prepare (ses );
965 static void send_execute (void *cls,
966 const struct GNUNET_SCHEDULER_TaskContext *tc)
972 struct Session * cs = NULL;
974 http_task_send = GNUNET_SCHEDULER_NO_TASK;
975 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
981 mret = curl_multi_perform (multi_handle, &running);
987 msg = curl_multi_info_read (multi_handle, &running);
988 GNUNET_break (msg != NULL);
991 /* get session for affected curl handle */
992 GNUNET_assert ( msg->easy_handle != NULL );
993 cs = find_session_by_curlhandle (msg->easy_handle);
994 GNUNET_assert ( cs != NULL );
995 GNUNET_assert ( cs->pending_outbound_msg != NULL );
1000 if ( (msg->data.result != CURLE_OK) &&
1001 (msg->data.result != CURLE_GOT_NOTHING) )
1004 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1005 _("%s failed for `%s' at %s:%d: `%s'\n"),
1006 "curl_multi_perform",
1010 curl_easy_strerror (msg->data.result));
1011 /* sending msg failed*/
1012 if (( NULL != cs->pending_outbound_msg) && ( NULL != cs->pending_outbound_msg->transmit_cont))
1013 cs->pending_outbound_msg->transmit_cont (cs->pending_outbound_msg->transmit_cont_cls,&cs->sender,GNUNET_SYSERR);
1017 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1018 "Send to peer `%s' completed.\n", GNUNET_i2s(&cs->sender));
1020 curl_easy_cleanup(cs->curl_handle);
1021 cs->curl_handle=NULL;
1023 /* Calling transmit continuation */
1024 if (( NULL != cs->pending_outbound_msg) && (NULL != cs->pending_outbound_msg->transmit_cont))
1025 cs->pending_outbound_msg->transmit_cont (cs->pending_outbound_msg->transmit_cont_cls,&cs->sender,GNUNET_OK);
1027 if (GNUNET_OK != remove_http_message(cs, cs->pending_outbound_msg))
1028 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Message could not be removed from session `%s'", GNUNET_i2s(&cs->sender));
1030 /* send pending messages */
1031 if (cs->pending_outbound_msg != NULL)
1033 send_select_init (cs);
1042 while ( (running > 0) );
1045 while (mret == CURLM_CALL_MULTI_PERFORM);
1051 * Function setting up file descriptors and scheduling task to run
1052 * @param ses session to send data to
1053 * @return bytes sent to peer
1055 static size_t send_prepare(struct Session* session )
1061 struct GNUNET_NETWORK_FDSet *grs;
1062 struct GNUNET_NETWORK_FDSet *gws;
1070 mret = curl_multi_fdset (multi_handle, &rs, &ws, &es, &max);
1071 if (mret != CURLM_OK)
1073 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1074 _("%s failed at %s:%d: `%s'\n"),
1075 "curl_multi_fdset", __FILE__, __LINE__,
1076 curl_multi_strerror (mret));
1079 mret = curl_multi_timeout (multi_handle, &to);
1080 if (mret != CURLM_OK)
1082 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1083 _("%s failed at %s:%d: `%s'\n"),
1084 "curl_multi_timeout", __FILE__, __LINE__,
1085 curl_multi_strerror (mret));
1089 grs = GNUNET_NETWORK_fdset_create ();
1090 gws = GNUNET_NETWORK_fdset_create ();
1091 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
1092 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
1093 http_task_send = GNUNET_SCHEDULER_add_select (plugin->env->sched,
1094 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1095 GNUNET_SCHEDULER_NO_TASK,
1096 GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 0),
1101 GNUNET_NETWORK_fdset_destroy (gws);
1102 GNUNET_NETWORK_fdset_destroy (grs);
1104 /* FIXME: return bytes REALLY sent */
1109 * Function that can be used by the transport service to transmit
1110 * a message using the plugin.
1112 * @param cls closure
1113 * @param target who should receive this message
1114 * @param priority how important is the message
1115 * @param msgbuf the message to transmit
1116 * @param msgbuf_size number of bytes in 'msgbuf'
1117 * @param to when should we time out
1118 * @param session which session must be used (or NULL for "any")
1119 * @param addr the address to use (can be NULL if the plugin
1120 * is "on its own" (i.e. re-use existing TCP connection))
1121 * @param addrlen length of the address in bytes
1122 * @param force_address GNUNET_YES if the plugin MUST use the given address,
1123 * otherwise the plugin may use other addresses or
1124 * existing connections (if available)
1125 * @param cont continuation to call once the message has
1126 * been transmitted (or if the transport is ready
1127 * for the next transmission call; or if the
1128 * peer disconnected...)
1129 * @param cont_cls closure for cont
1130 * @return number of bytes used (on the physical network, with overheads);
1131 * -1 on hard errors (i.e. address invalid); 0 is a legal value
1132 * and does NOT mean that the message was not transmitted (DV)
1135 http_plugin_send (void *cls,
1136 const struct GNUNET_PeerIdentity *target,
1139 unsigned int priority,
1140 struct GNUNET_TIME_Relative to,
1141 struct Session *session,
1145 GNUNET_TRANSPORT_TransmitContinuation cont,
1149 struct Session* ses;
1150 struct Session* ses_temp;
1151 struct HTTP_Message * msg;
1152 struct HTTP_Message * tmp;
1157 /* find session for peer */
1158 ses = find_session_by_pi (target);
1160 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Existing session for peer `%s' found\n", GNUNET_i2s(target));
1163 /* create new session object */
1165 ses = create_session(NULL, (struct sockaddr_in *) addr, target);
1166 ses->is_active = GNUNET_YES;
1168 /* Insert session into linked list */
1169 if ( plugin->sessions == NULL)
1171 plugin->sessions = ses;
1172 plugin->session_count = 1;
1174 ses_temp = plugin->sessions;
1175 while ( ses_temp->next != NULL )
1177 ses_temp = ses_temp->next;
1179 if (ses_temp != ses )
1181 ses_temp->next = ses;
1182 plugin->session_count++;
1184 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"New Session `%s' inserted, count %u \n", GNUNET_i2s(target), plugin->session_count);
1187 GNUNET_assert (addr!=NULL);
1190 /* setting url to send to */
1191 if (force_address == GNUNET_YES)
1193 if (addrlen == (sizeof (struct IPv4HttpAddress)))
1195 address = GNUNET_malloc(INET_ADDRSTRLEN + 14 + strlen ((const char *) (&ses->hash)));
1196 inet_ntop(AF_INET,&((struct IPv4HttpAddress *) addr)->ipv4_addr,address,INET_ADDRSTRLEN);
1197 port = ntohs(((struct IPv4HttpAddress *) addr)->u_port);
1198 GNUNET_asprintf(&address,"http://%s:%u/%s",address,port, (char *) (&ses->hash));
1200 else if (addrlen == (sizeof (struct IPv6HttpAddress)))
1202 address = GNUNET_malloc(INET6_ADDRSTRLEN + 14 + strlen ((const char *) (&ses->hash)));
1203 inet_ntop(AF_INET6, &((struct IPv6HttpAddress *) addr)->ipv6_addr,address,INET6_ADDRSTRLEN);
1204 port = ntohs(((struct IPv6HttpAddress *) addr)->u6_port);
1205 GNUNET_asprintf(&address,"http://%s:%u/%s",address,port,(char *) (&ses->hash));
1214 GNUNET_assert (address != NULL);
1217 /* setting up message */
1218 msg = GNUNET_malloc (sizeof (struct HTTP_Message));
1220 msg->len = msgbuf_size;
1222 msg->buf = GNUNET_malloc (msgbuf_size);
1223 msg->dest_url = address;
1224 msg->transmit_cont = cont;
1225 msg->transmit_cont_cls = cont_cls;
1226 memcpy (msg->buf,msgbuf, msgbuf_size);
1228 /* insert created message in list of pending messages */
1229 if (ses->pending_outbound_msg == NULL)
1231 ses->pending_outbound_msg = msg;
1233 tmp = ses->pending_outbound_msg;
1234 while ( NULL != tmp->next)
1243 if (msg == ses->pending_outbound_msg)
1245 bytes_sent = send_select_init (ses);
1254 * Function that can be used to force the plugin to disconnect
1255 * from the given peer and cancel all previous transmissions
1256 * (and their continuationc).
1258 * @param cls closure
1259 * @param target peer from which to disconnect
1262 http_plugin_disconnect (void *cls,
1263 const struct GNUNET_PeerIdentity *target)
1265 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Plugin: http_plugin_disconnect\n");
1266 // struct Plugin *plugin = cls;
1272 * Convert the transports address to a nice, human-readable
1275 * @param cls closure
1276 * @param type name of the transport that generated the address
1277 * @param addr one of the addresses of the host, NULL for the last address
1278 * the specific address format depends on the transport
1279 * @param addrlen length of the address
1280 * @param numeric should (IP) addresses be displayed in numeric form?
1281 * @param timeout after how long should we give up?
1282 * @param asc function to call on each string
1283 * @param asc_cls closure for asc
1286 http_plugin_address_pretty_printer (void *cls,
1291 struct GNUNET_TIME_Relative timeout,
1292 GNUNET_TRANSPORT_AddressStringCallback
1295 const struct IPv4HttpAddress *t4;
1296 const struct IPv6HttpAddress *t6;
1297 struct sockaddr_in a4;
1298 struct sockaddr_in6 a6;
1303 if (addrlen == sizeof (struct IPv6HttpAddress))
1305 address = GNUNET_malloc (INET6_ADDRSTRLEN);
1307 a6.sin6_addr = t6->ipv6_addr;
1308 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
1309 port = ntohs(t6->u6_port);
1311 else if (addrlen == sizeof (struct IPv4HttpAddress))
1313 address = GNUNET_malloc (INET_ADDRSTRLEN);
1315 a4.sin_addr.s_addr = t4->ipv4_addr;
1316 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
1317 port = ntohs(t4->u_port);
1321 /* invalid address */
1322 GNUNET_break_op (0);
1323 asc (asc_cls, NULL);
1327 ret = GNUNET_malloc(strlen(address) +14);
1328 GNUNET_asprintf(&ret,"http://%s:%u/",address,port);
1329 GNUNET_free (address);
1336 * Another peer has suggested an address for this
1337 * peer and transport plugin. Check that this could be a valid
1338 * address. If so, consider adding it to the list
1341 * @param cls closure
1342 * @param addr pointer to the address
1343 * @param addrlen length of addr
1344 * @return GNUNET_OK if this is a plausible address for this peer
1348 http_plugin_address_suggested (void *cls,
1349 void *addr, size_t addrlen)
1351 struct IPv4HttpAddress *v4;
1352 struct IPv6HttpAddress *v6;
1355 if ((addrlen != sizeof (struct IPv4HttpAddress)) &&
1356 (addrlen != sizeof (struct IPv6HttpAddress)))
1358 return GNUNET_SYSERR;
1360 if (addrlen == sizeof (struct IPv4HttpAddress))
1362 v4 = (struct IPv4HttpAddress *) addr;
1363 if (INADDR_LOOPBACK == ntohl(v4->ipv4_addr))
1365 return GNUNET_SYSERR;
1367 port = ntohs (v4->u_port);
1368 if (port != plugin->port_inbound)
1370 return GNUNET_SYSERR;
1375 v6 = (struct IPv6HttpAddress *) addr;
1376 if (IN6_IS_ADDR_LINKLOCAL (&v6->ipv6_addr))
1378 return GNUNET_SYSERR;
1380 port = ntohs (v6->u6_port);
1381 if (port != plugin->port_inbound)
1383 return GNUNET_SYSERR;
1393 * Function called for a quick conversion of the binary address to
1394 * a numeric address. Note that the caller must not free the
1395 * address and that the next call to this function is allowed
1396 * to override the address again.
1398 * @param cls closure
1399 * @param addr binary address
1400 * @param addrlen length of the address
1401 * @return string representing the same address
1404 http_plugin_address_to_string (void *cls,
1408 const struct IPv4HttpAddress *t4;
1409 const struct IPv6HttpAddress *t6;
1410 struct sockaddr_in a4;
1411 struct sockaddr_in6 a6;
1416 if (addrlen == sizeof (struct IPv6HttpAddress))
1418 address = GNUNET_malloc (INET6_ADDRSTRLEN);
1420 a6.sin6_addr = t6->ipv6_addr;
1421 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
1422 port = ntohs(t6->u6_port);
1424 else if (addrlen == sizeof (struct IPv4HttpAddress))
1426 address = GNUNET_malloc (INET_ADDRSTRLEN);
1428 a4.sin_addr.s_addr = t4->ipv4_addr;
1429 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
1430 port = ntohs(t4->u_port);
1434 /* invalid address */
1438 ret = GNUNET_malloc(strlen(address) +6);
1439 GNUNET_asprintf(&ret,"%s:%u",address,port);
1440 GNUNET_free (address);
1445 * Add the IP of our network interface to the list of
1446 * our external IP addresses.
1448 * @param cls the 'struct Plugin*'
1449 * @param name name of the interface
1450 * @param isDefault do we think this may be our default interface
1451 * @param addr address of the interface
1452 * @param addrlen number of bytes in addr
1453 * @return GNUNET_OK to continue iterating
1456 process_interfaces (void *cls,
1459 const struct sockaddr *addr, socklen_t addrlen)
1461 struct IPv4HttpAddress t4;
1462 struct IPv6HttpAddress t6;
1469 af = addr->sa_family;
1472 if (INADDR_LOOPBACK == ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr))
1474 /* skip loopback addresses */
1477 t4.ipv4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
1478 t4.u_port = htons (plugin->port_inbound);
1482 else if (af == AF_INET6)
1484 if (IN6_IS_ADDR_LINKLOCAL (&((struct sockaddr_in6 *) addr)->sin6_addr))
1486 /* skip link local addresses */
1489 if (IN6_IS_ADDR_LOOPBACK (&((struct sockaddr_in6 *) addr)->sin6_addr))
1491 /* skip loopback addresses */
1494 memcpy (&t6.ipv6_addr,
1495 &((struct sockaddr_in6 *) addr)->sin6_addr,
1496 sizeof (struct in6_addr));
1497 t6.u6_port = htons (plugin->port_inbound);
1506 plugin->env->notify_address(plugin->env->cls,"http",arg, args, GNUNET_TIME_UNIT_FOREVER_REL);
1512 * Exit point from the plugin.
1515 libgnunet_plugin_transport_http_done (void *cls)
1517 struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
1518 struct Plugin *plugin = api->cls;
1519 struct Session * cs;
1520 struct Session * cs_next;
1523 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Unloading http plugin...\n");
1525 if ( http_task_v4 != GNUNET_SCHEDULER_NO_TASK)
1527 GNUNET_SCHEDULER_cancel(plugin->env->sched, http_task_v4);
1528 http_task_v4 = GNUNET_SCHEDULER_NO_TASK;
1531 if ( http_task_v6 != GNUNET_SCHEDULER_NO_TASK)
1533 GNUNET_SCHEDULER_cancel(plugin->env->sched, http_task_v6);
1534 http_task_v6 = GNUNET_SCHEDULER_NO_TASK;
1537 if ( http_task_send != GNUNET_SCHEDULER_NO_TASK)
1539 GNUNET_SCHEDULER_cancel(plugin->env->sched, http_task_send);
1540 http_task_send = GNUNET_SCHEDULER_NO_TASK;
1543 if (http_daemon_v4 != NULL)
1545 MHD_stop_daemon (http_daemon_v4);
1546 http_daemon_v4 = NULL;
1548 if (http_daemon_v6 != NULL)
1550 MHD_stop_daemon (http_daemon_v6);
1551 http_daemon_v6 = NULL;
1554 mret = curl_multi_cleanup(multi_handle);
1555 if ( CURLM_OK != mret)
1556 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"curl multihandle clean up failed");
1558 /* free all sessions */
1559 cs = plugin->sessions;
1563 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Freeing session for peer `%s'\n",GNUNET_i2s(&cs->sender));
1567 /* freeing messages */
1568 struct HTTP_Message *cur;
1569 struct HTTP_Message *tmp;
1570 cur = cs->pending_outbound_msg;
1575 if (NULL != cur->buf)
1576 GNUNET_free (cur->buf);
1580 GNUNET_free (cs->pending_inbound_msg->buf);
1581 GNUNET_free (cs->pending_inbound_msg);
1582 GNUNET_free (cs->ip);
1583 GNUNET_free_non_null (cs->addr_inbound);
1584 GNUNET_free_non_null (cs->addr_outbound);
1587 plugin->session_count--;
1593 /* GNUNET_SERVICE_stop (plugin->service); */
1594 GNUNET_free (hostname);
1595 GNUNET_free (plugin);
1602 * Entry point for the plugin.
1605 libgnunet_plugin_transport_http_init (void *cls)
1607 struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
1608 struct GNUNET_TRANSPORT_PluginFunctions *api;
1609 struct GNUNET_SERVICE_Context *service;
1610 unsigned int timeout;
1611 struct GNUNET_TIME_Relative gn_timeout;
1612 long long unsigned int port;
1614 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting http plugin...\n");
1618 service = GNUNET_SERVICE_start ("transport-http", env->sched, env->cfg);
1619 if (service == NULL)
1621 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, "", _
1622 ("Failed to start service for `%s' transport plugin.\n"),
1628 plugin = GNUNET_malloc (sizeof (struct Plugin));
1630 plugin->sessions = NULL;
1631 plugin->service = service;
1632 api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
1634 api->send = &http_plugin_send;
1635 api->disconnect = &http_plugin_disconnect;
1636 api->address_pretty_printer = &http_plugin_address_pretty_printer;
1637 api->check_address = &http_plugin_address_suggested;
1638 api->address_to_string = &http_plugin_address_to_string;
1640 hostname = GNUNET_RESOLVER_local_fqdn_get ();
1642 /* Hashing our identity to use it in URLs */
1643 GNUNET_CRYPTO_hash_to_enc ( &(plugin->env->my_identity->hashPubKey), &my_ascii_hash_ident);
1645 /* Reading port number from config file */
1647 GNUNET_CONFIGURATION_get_value_number (env->cfg,
1653 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
1656 ("Require valid port number for transport plugin `%s' in configuration!\n"),
1658 libgnunet_plugin_transport_http_done (api);
1661 plugin->port_inbound = port;
1662 gn_timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
1663 timeout = ( gn_timeout.value / 1000);
1664 if ((http_daemon_v4 == NULL) && (http_daemon_v6 == NULL) && (port != 0))
1666 http_daemon_v6 = MHD_start_daemon (MHD_USE_IPv6,
1668 &acceptPolicyCallback,
1669 NULL , &accessHandlerCallback, NULL,
1670 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
1671 MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
1672 MHD_OPTION_CONNECTION_TIMEOUT, timeout,
1673 /* FIXME: set correct limit */
1674 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
1675 MHD_OPTION_NOTIFY_COMPLETED, &requestCompletedCallback, NULL,
1677 http_daemon_v4 = MHD_start_daemon (MHD_NO_FLAG,
1679 &acceptPolicyCallback,
1680 NULL , &accessHandlerCallback, NULL,
1681 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
1682 MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
1683 MHD_OPTION_CONNECTION_TIMEOUT, timeout,
1684 /* FIXME: set correct limit */
1685 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
1686 MHD_OPTION_NOTIFY_COMPLETED, &requestCompletedCallback, NULL,
1689 if (http_daemon_v4 != NULL)
1690 http_task_v4 = http_daemon_prepare (http_daemon_v4);
1691 if (http_daemon_v6 != NULL)
1692 http_task_v6 = http_daemon_prepare (http_daemon_v6);
1694 if (http_task_v4 != GNUNET_SCHEDULER_NO_TASK)
1695 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 on port %u\n",port);
1696 if (http_task_v6 != GNUNET_SCHEDULER_NO_TASK)
1697 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 and IPv6 on port %u\n",port);
1700 /* Initializing cURL */
1701 multi_handle = curl_multi_init();
1702 if ( NULL == multi_handle )
1704 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
1706 _("Could not initialize curl multi handle, failed to start http plugin!\n"),
1708 libgnunet_plugin_transport_http_done (api);
1712 GNUNET_OS_network_interfaces_list (&process_interfaces, plugin);
1717 /* end of plugin_transport_template.c */