2 This file is part of GNUnet
3 (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file transport/plugin_transport_http.c
23 * @brief http transport service plugin
24 * @author Matthias Wachs
28 #include "gnunet_common.h"
29 #include "gnunet_constants.h"
30 #include "gnunet_protocols.h"
31 #include "gnunet_connection_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 LIBGNUNET_PLUGIN_TRANSPORT_INIT libgnunet_plugin_transport_https_init
45 #define LIBGNUNET_PLUGIN_TRANSPORT_DONE libgnunet_plugin_transport_https_done
46 #define LIBGNUNET_PLUGIN_TRANSPORT_COMPONENT transport_https
47 #define PROTOCOL_PREFIX "https"
49 #define LIBGNUNET_PLUGIN_TRANSPORT_INIT libgnunet_plugin_transport_http_init
50 #define LIBGNUNET_PLUGIN_TRANSPORT_DONE libgnunet_plugin_transport_http_done
51 #define LIBGNUNET_PLUGIN_TRANSPORT_COMPONENT transport_http
52 #define PROTOCOL_PREFIX "http"
55 #define DEBUG_HTTP GNUNET_NO
56 #define DEBUG_CURL GNUNET_NO
57 #define DEBUG_MHD GNUNET_NO
58 #define DEBUG_CONNECTIONS GNUNET_NO
59 #define DEBUG_SESSION_SELECTION GNUNET_NO
60 #define DEBUG_SCHEDULING GNUNET_NO
61 #define CURL_TCP_NODELAY GNUNET_YES
63 #define INBOUND GNUNET_NO
64 #define OUTBOUND GNUNET_YES
69 * Text of the response sent back after the last bytes of a PUT
70 * request have been received (just to formally obey the HTTP
73 #define HTTP_PUT_RESPONSE "Thank you!"
76 * After how long do we expire an address that we
77 * learned from another peer if it is not reconfirmed
80 #define LEARNED_ADDRESS_EXPIRATION GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 6)
83 * Page returned if request invalid
85 #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>"
88 * Timeout for a http connect
90 #define HTTP_CONNECT_TIMEOUT 30
94 * Network format for IPv4 addresses.
96 struct IPv4HttpAddress
99 * IPv4 address, in network byte order.
101 uint32_t ipv4_addr GNUNET_PACKED;
104 * Port number, in network byte order.
106 uint16_t u_port GNUNET_PACKED;
112 * Network format for IPv6 addresses.
114 struct IPv6HttpAddress
119 struct in6_addr ipv6_addr GNUNET_PACKED;
122 * Port number, in network byte order.
124 uint16_t u6_port GNUNET_PACKED;
130 * Message to send using http
135 * next pointer for double linked list
137 struct HTTP_Message * next;
140 * previous pointer for double linked list
142 struct HTTP_Message * prev;
145 * buffer containing data to send
150 * amount of data already sent
160 * Continuation function to call once the transmission buffer
161 * has again space available. NULL if there is no
162 * continuation to call.
164 GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
167 * Closure for transmit_cont.
169 void *transmit_cont_cls;
173 struct HTTP_PeerContext
178 struct GNUNET_PeerIdentity identity;
181 * Pointer to the global plugin struct.
183 struct Plugin *plugin;
186 * Linked list of connections with this peer
189 struct Session * head;
192 * Linked list of connections with this peer
195 struct Session * tail;
198 * id for next session
200 size_t session_id_counter;
203 * Last session used to send data
205 struct Session * last_session;
214 struct SessionHeader header;
217 * next session in linked list
219 struct Session * next;
222 * previous session in linked list
224 struct Session * prev;
227 * address of this session
242 * Message queue for outbound messages
245 struct HTTP_Message * pending_msgs_head;
248 * Message queue for outbound messages
251 struct HTTP_Message * pending_msgs_tail;
254 * partner peer this connection belongs to
256 struct HTTP_PeerContext * peercontext;
259 * message stream tokenizer for incoming data
261 struct GNUNET_SERVER_MessageStreamTokenizer *msgtok;
265 * outbound: OUTBOUND (GNUNET_YES)
266 * inbound : INBOUND (GNUNET_NO)
268 unsigned int direction;
271 * is session connected to send data?
273 unsigned int send_connected;
276 * is send connection active?
278 unsigned int send_active;
281 * connection disconnect forced (e.g. from transport)
283 unsigned int send_force_disconnect;
286 * is session connected to receive data?
288 unsigned int recv_connected;
291 * is receive connection active?
293 unsigned int recv_active;
296 * connection disconnect forced (e.g. from transport)
298 unsigned int recv_force_disconnect;
301 * id for next session
302 * NOTE: 0 is not an ID, zero is not defined. A correct ID is always > 0
307 * entity managing sending data
308 * outbound session: CURL *
309 * inbound session: mhd_connection *
311 void * send_endpoint;
314 * entity managing recieving data
315 * outbound session: CURL *
316 * inbound session: mhd_connection *
318 void * recv_endpoint;
323 size_t queue_length_cur;
328 size_t queue_length_max;
333 * Encapsulation of all of the state of the plugin.
340 struct GNUNET_TRANSPORT_PluginEnvironment *env;
343 * Handle for reporting statistics.
345 struct GNUNET_STATISTICS_Handle *stats;
350 unsigned int port_inbound;
352 struct GNUNET_CONTAINER_MultiHashMap *peers;
355 * Daemon for listening for new IPv4 connections.
357 struct MHD_Daemon *http_server_daemon_v4;
360 * Daemon for listening for new IPv6connections.
362 struct MHD_Daemon *http_server_daemon_v6;
365 * Our primary task for http daemon handling IPv4 connections
367 GNUNET_SCHEDULER_TaskIdentifier http_server_task_v4;
370 * Our primary task for http daemon handling IPv6 connections
372 GNUNET_SCHEDULER_TaskIdentifier http_server_task_v6;
375 * The task sending data
377 GNUNET_SCHEDULER_TaskIdentifier http_curl_task;
382 CURLM * multi_handle;
385 * Our ASCII encoded, hashed peer identity
386 * This string is used to distinguish between connections and is added to the urls
388 struct GNUNET_CRYPTO_HashAsciiEncoded my_ascii_hash_ident;
391 * IPv4 Address the plugin binds to
393 struct sockaddr_in * bind4_address;
396 * IPv6 Address the plugins binds to
398 struct sockaddr_in6 * bind6_address;
401 * Hostname to bind to
403 char * bind_hostname;
416 * Closure passed by MHD to the mhd_logger function
420 /* only needed for HTTPS plugin */
422 /* The certificate MHD uses as an \0 terminated string */
425 /* The private key MHD uses as an \0 terminated string */
428 /* crypto init string */
435 * Function called for a quick conversion of the binary address to
436 * a numeric address. Note that the caller must not free the
437 * address and that the next call to this function is allowed
438 * to override the address again.
441 * @param addr binary address
442 * @param addrlen length of the address
443 * @return string representing the same address
446 http_plugin_address_to_string (void *cls,
452 * Call MHD to process pending ipv4 requests and then go back
453 * and schedule the next run.
455 static void http_server_daemon_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
457 * Call MHD to process pending ipv6 requests and then go back
458 * and schedule the next run.
460 static void http_server_daemon_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
463 * Function setting up curl handle and selecting message to send
464 * @param plugin plugin
465 * @param ses session to send data to
466 * @param con connection
467 * @return bytes sent to peer
469 static int send_check_connections (struct Plugin *plugin, struct Session *ps);
472 * Function setting up file descriptors and scheduling task to run
474 * @param ses session to send data to
477 static int curl_schedule (struct Plugin *plugin);
481 * Creates a valid url from passed address and id
482 * @param plugin plugin
483 * @param addr address to create url from
484 * @param addrlen address lenth
485 * @param id session id
486 * @return the created url
488 static char * create_url(struct Plugin *plugin, const void * addr, size_t addrlen, size_t id)
491 char *addr_str = (char *) http_plugin_address_to_string(NULL, addr, addrlen);
493 GNUNET_assert ((addr!=NULL) && (addrlen != 0));
494 GNUNET_asprintf(&url,
495 "%s://%s/%s;%u", PROTOCOL_PREFIX, addr_str,
496 (char *) (&plugin->my_ascii_hash_ident),id);
497 GNUNET_free_non_null(addr_str);
502 * Removes a message from the linked list of messages
505 * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
507 static int remove_http_message (struct Session * ps, struct HTTP_Message * msg)
509 GNUNET_CONTAINER_DLL_remove(ps->pending_msgs_head,ps->pending_msgs_tail,msg);
515 * Iterator to remove peer context
516 * @param cls the plugin
517 * @param key the peers public key hashcode
518 * @param value the peer context
519 * @return GNUNET_YES on success
521 int remove_peer_context_Iterator (void *cls, const GNUNET_HashCode *key, void *value)
523 struct Plugin *plugin = cls;
524 struct HTTP_PeerContext * pc = value;
525 struct Session * ps = pc->head;
526 struct Session * tmp = NULL;
527 struct HTTP_Message * msg = NULL;
528 struct HTTP_Message * msg_tmp = NULL;
530 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Freeing context for peer `%s'\n",GNUNET_i2s(&pc->identity));
532 GNUNET_CONTAINER_multihashmap_remove (plugin->peers, &pc->identity.hashPubKey, pc);
535 plugin->env->session_end(plugin, &pc->identity, ps);
538 GNUNET_free_non_null (ps->addr);
539 GNUNET_free(ps->url);
540 if (ps->msgtok != NULL)
541 GNUNET_SERVER_mst_destroy (ps->msgtok);
543 msg = ps->pending_msgs_head;
550 if (ps->direction==OUTBOUND)
552 if (ps->send_endpoint!=NULL)
553 curl_easy_cleanup(ps->send_endpoint);
554 if (ps->recv_endpoint!=NULL)
555 curl_easy_cleanup(ps->recv_endpoint);
562 GNUNET_STATISTICS_update (plugin->env->stats,
563 gettext_noop ("# HTTP peers active"),
571 * Removes a session from the linked list of sessions
572 * @param pc peer context
574 * @param call_msg_cont GNUNET_YES to call pending message continuations, otherwise no
575 * @param call_msg_cont_result result to call message continuations with
576 * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
578 static int remove_session (struct HTTP_PeerContext * pc, struct Session * ps, int call_msg_cont, int call_msg_cont_result)
580 struct HTTP_Message * msg;
581 struct Plugin * plugin = ps->peercontext->plugin;
583 #if DEBUG_CONNECTIONS
584 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: removing %s session %X with id %u\n", ps, (ps->direction == INBOUND) ? "inbound" : "outbound", ps, ps->session_id);
586 plugin->env->session_end(plugin, &pc->identity, ps);
588 GNUNET_free_non_null (ps->addr);
589 GNUNET_SERVER_mst_destroy (ps->msgtok);
590 GNUNET_free(ps->url);
592 if (ps->direction==INBOUND)
594 if (ps->recv_endpoint != NULL)
596 curl_easy_cleanup(ps->recv_endpoint);
597 ps->recv_endpoint = NULL;
599 if (ps->send_endpoint != NULL)
601 curl_easy_cleanup(ps->send_endpoint);
602 ps->send_endpoint = NULL;
606 msg = ps->pending_msgs_head;
609 if ((call_msg_cont == GNUNET_YES) && (msg->transmit_cont!=NULL))
611 msg->transmit_cont (msg->transmit_cont_cls,&pc->identity,call_msg_cont_result);
613 GNUNET_CONTAINER_DLL_remove(ps->pending_msgs_head,ps->pending_msgs_head,msg);
615 msg = ps->pending_msgs_head;
618 GNUNET_CONTAINER_DLL_remove(pc->head,pc->tail,ps);
622 /* no sessions left remove peer */
626 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No sessions left for peer `%s', removing context\n",GNUNET_i2s(&pc->identity));
628 remove_peer_context_Iterator(plugin, &pc->identity.hashPubKey, pc);
636 * Add the IP of our network interface to the list of
637 * our external IP addresses.
639 * @param cls the 'struct Plugin*'
640 * @param name name of the interface
641 * @param isDefault do we think this may be our default interface
642 * @param addr address of the interface
643 * @param addrlen number of bytes in addr
644 * @return GNUNET_OK to continue iterating
647 process_interfaces (void *cls,
650 const struct sockaddr *addr, socklen_t addrlen)
652 struct Plugin *plugin = cls;
653 struct IPv4HttpAddress * t4;
654 struct IPv6HttpAddress * t6;
658 GNUNET_assert(cls !=NULL);
659 af = addr->sa_family;
660 if ((af == AF_INET) && (plugin->use_ipv4 == GNUNET_YES) && (plugin->bind6_address == NULL))
662 struct in_addr bnd_cmp = ((struct sockaddr_in *) addr)->sin_addr;
663 t4 = GNUNET_malloc(sizeof(struct IPv4HttpAddress));
664 /* Not skipping loopback addresses
665 if (INADDR_LOOPBACK == ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr))
671 t4->ipv4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
672 t4->u_port = htons (plugin->port_inbound);
673 if (plugin->bind4_address != NULL)
675 if (0 == memcmp(&plugin->bind4_address->sin_addr, &bnd_cmp, sizeof (struct in_addr)))
677 plugin->env->notify_address(plugin->env->cls,PROTOCOL_PREFIX,t4, sizeof (struct IPv4HttpAddress), GNUNET_TIME_UNIT_FOREVER_REL);
682 plugin->env->notify_address(plugin->env->cls,PROTOCOL_PREFIX,t4, sizeof (struct IPv4HttpAddress), GNUNET_TIME_UNIT_FOREVER_REL);
686 else if ((af == AF_INET6) && (plugin->use_ipv6 == GNUNET_YES) && (plugin->bind4_address == NULL))
688 struct in6_addr bnd_cmp6 = ((struct sockaddr_in6 *) addr)->sin6_addr;
689 if (IN6_IS_ADDR_LINKLOCAL (&((struct sockaddr_in6 *) addr)->sin6_addr))
693 t6 = GNUNET_malloc(sizeof(struct IPv6HttpAddress));
694 GNUNET_assert(t6 != NULL);
695 if (plugin->bind6_address != NULL)
697 if (0 == memcmp(&plugin->bind6_address->sin6_addr, &bnd_cmp6, sizeof (struct in6_addr)))
699 memcpy (&t6->ipv6_addr,
700 &((struct sockaddr_in6 *) addr)->sin6_addr,
701 sizeof (struct in6_addr));
702 t6->u6_port = htons (plugin->port_inbound);
703 plugin->env->notify_address(plugin->env->cls,PROTOCOL_PREFIX,t6,sizeof (struct IPv6HttpAddress) , GNUNET_TIME_UNIT_FOREVER_REL);
708 memcpy (&t6->ipv6_addr,
709 &((struct sockaddr_in6 *) addr)->sin6_addr,
710 sizeof (struct in6_addr));
711 t6->u6_port = htons (plugin->port_inbound);
712 plugin->env->notify_address(plugin->env->cls,PROTOCOL_PREFIX,t6,sizeof (struct IPv6HttpAddress) , GNUNET_TIME_UNIT_FOREVER_REL);
721 * External logging function for MHD
722 * @param arg arguments
723 * @param fmt format string
724 * @param ap list of arguments
726 void mhd_logger (void * arg, const char * fmt, va_list ap)
729 vsnprintf(text, 1024, fmt, ap);
731 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,"MHD: %s \n", text);
735 static void mhd_termination_cb (void *cls, struct MHD_Connection * connection, void **httpSessionCache)
737 struct Session * ps = *httpSessionCache;
740 struct HTTP_PeerContext * pc = ps->peercontext;
742 if (connection==ps->recv_endpoint)
744 #if DEBUG_CONNECTIONS
745 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound connection from peer `%s' was terminated\n", ps, GNUNET_i2s(&pc->identity));
747 ps->recv_active = GNUNET_NO;
748 ps->recv_connected = GNUNET_NO;
749 ps->recv_endpoint = NULL;
751 if (connection==ps->send_endpoint)
754 ps->send_active = GNUNET_NO;
755 ps->send_connected = GNUNET_NO;
756 ps->send_endpoint = NULL;
757 #if DEBUG_CONNECTIONS
758 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound connection from peer `%s' was terminated\n", ps, GNUNET_i2s(&pc->identity));
762 /* if both connections disconnected, remove session */
763 if ((ps->send_connected == GNUNET_NO) && (ps->recv_connected == GNUNET_NO))
765 GNUNET_STATISTICS_update (pc->plugin->env->stats,
766 gettext_noop ("# HTTP inbound sessions for peers active"),
769 remove_session(pc,ps,GNUNET_YES,GNUNET_SYSERR);
774 * Callback called by MessageStreamTokenizer when a message has arrived
775 * @param cls current session as closure
776 * @param client clien
777 * @param message the message to be forwarded to transport service
780 static void mhd_write_mst_cb (void *cls,
782 const struct GNUNET_MessageHeader *message)
785 struct Session *ps = cls;
786 GNUNET_assert(ps != NULL);
788 struct HTTP_PeerContext *pc = ps->peercontext;
789 GNUNET_assert(pc != NULL);
791 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
792 "Connection %X: Forwarding message to transport service, type %u and size %u from `%s' (`%s')\n",
794 ntohs(message->type),
795 ntohs(message->size),
796 GNUNET_i2s(&(ps->peercontext)->identity),http_plugin_address_to_string(NULL,ps->addr,ps->addrlen));
798 pc->plugin->env->receive (ps->peercontext->plugin->env->cls,
806 * Check if incoming connection is accepted.
807 * NOTE: Here every connection is accepted
808 * @param cls plugin as closure
809 * @param addr address of incoming connection
810 * @param addr_len address length of incoming connection
811 * @return MHD_YES if connection is accepted, MHD_NO if connection is rejected
815 mhd_accept_cb (void *cls, const struct sockaddr *addr, socklen_t addr_len)
818 struct Plugin *plugin = cls;
820 /* Every connection is accepted, nothing more to do here */
826 * Callback called by MHD when it needs data to send
827 * @param cls current session
828 * @param pos position in buffer
829 * @param buf the buffer to write data to
830 * @param max max number of bytes available in buffer
831 * @return bytes written to buffer
834 mhd_send_callback (void *cls, uint64_t pos, char *buf, size_t max)
836 struct Session * ps = cls;
837 struct HTTP_PeerContext * pc;
838 struct HTTP_Message * msg;
841 GNUNET_assert (ps!=NULL);
843 pc = ps->peercontext;
844 msg = ps->pending_msgs_tail;
845 if (ps->send_force_disconnect==GNUNET_YES)
847 #if DEBUG_CONNECTIONS
848 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound forced to disconnect\n",ps);
855 if ((msg->size-msg->pos) <= max)
857 memcpy(buf,&msg->buf[msg->pos],(msg->size-msg->pos));
858 bytes_read = msg->size-msg->pos;
859 msg->pos+=(msg->size-msg->pos);
863 memcpy(buf,&msg->buf[msg->pos],max);
868 if (msg->pos==msg->size)
870 if (NULL!=msg->transmit_cont)
871 msg->transmit_cont (msg->transmit_cont_cls,&pc->identity,GNUNET_OK);
872 ps->queue_length_cur -= msg->size;
873 remove_http_message(ps,msg);
880 * Process GET or PUT request received via MHD. For
881 * GET, queue response that will send back our pending
882 * messages. For PUT, process incoming data and send
883 * to GNUnet core. In either case, check if a session
884 * already exists and create a new one if not.
887 mdh_access_cb (void *cls,
888 struct MHD_Connection *mhd_connection,
892 const char *upload_data,
893 size_t * upload_data_size, void **httpSessionCache)
895 struct Plugin *plugin = cls;
896 struct MHD_Response *response;
897 const union MHD_ConnectionInfo * conn_info;
899 struct sockaddr_in *addrin;
900 struct sockaddr_in6 *addrin6;
902 char address[INET6_ADDRSTRLEN+14];
903 struct GNUNET_PeerIdentity pi_in;
906 struct IPv4HttpAddress ipv4addr;
907 struct IPv6HttpAddress ipv6addr;
909 struct HTTP_PeerContext *pc;
910 struct Session *ps = NULL;
911 struct Session *ps_tmp = NULL;
914 int send_error_to_client;
916 size_t addr_len = 0 ;
918 GNUNET_assert(cls !=NULL);
919 send_error_to_client = GNUNET_NO;
921 if (NULL == *httpSessionCache)
923 /* check url for peer identity , if invalid send HTTP 404*/
924 size_t len = strlen(&url[1]);
925 char * peer = GNUNET_malloc(104+1);
927 if ((len>104) && (url[104]==';'))
929 char * id = GNUNET_malloc((len-104)+1);
930 strcpy(id,&url[105]);
931 memcpy(peer,&url[1],103);
933 id_num = strtoul ( id, NULL , 10);
936 res = GNUNET_CRYPTO_hash_from_string (peer, &(pi_in.hashPubKey));
938 if ( GNUNET_SYSERR == res )
940 response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
941 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
942 MHD_destroy_response (response);
943 #if DEBUG_CONNECTIONS
945 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, sent HTTP 1.1/404\n");
947 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, could not send error\n");
954 ps = *httpSessionCache;
955 pc = ps->peercontext;
958 if (NULL == *httpSessionCache)
960 /* get peer context */
961 pc = GNUNET_CONTAINER_multihashmap_get (plugin->peers, &pi_in.hashPubKey);
965 pc = GNUNET_malloc(sizeof (struct HTTP_PeerContext));
967 pc->session_id_counter=1;
968 pc->last_session = NULL;
969 memcpy(&pc->identity, &pi_in, sizeof(struct GNUNET_PeerIdentity));
970 GNUNET_CONTAINER_multihashmap_put(plugin->peers, &pc->identity.hashPubKey, pc, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
971 GNUNET_STATISTICS_update (plugin->env->stats,
972 gettext_noop ("# HTTP peers active"),
977 conn_info = MHD_get_connection_info(mhd_connection, MHD_CONNECTION_INFO_CLIENT_ADDRESS );
978 /* Incoming IPv4 connection */
979 if ( AF_INET == conn_info->client_addr->sin_family)
981 addrin = conn_info->client_addr;
982 inet_ntop(addrin->sin_family, &(addrin->sin_addr),address,INET_ADDRSTRLEN);
983 memcpy(&ipv4addr.ipv4_addr,&(addrin->sin_addr),sizeof(struct in_addr));
984 ipv4addr.u_port = addrin->sin_port;
986 addr_len = sizeof(struct IPv4HttpAddress);
988 /* Incoming IPv6 connection */
989 if ( AF_INET6 == conn_info->client_addr->sin_family)
991 addrin6 = (struct sockaddr_in6 *) conn_info->client_addr;
992 inet_ntop(addrin6->sin6_family, &(addrin6->sin6_addr),address,INET6_ADDRSTRLEN);
993 memcpy(&ipv6addr.ipv6_addr,&(addrin6->sin6_addr),sizeof(struct in6_addr));
994 ipv6addr.u6_port = addrin6->sin6_port;
996 addr_len = sizeof(struct IPv6HttpAddress);
999 GNUNET_assert (addr != NULL);
1000 GNUNET_assert (addr_len != 0);
1003 /* only inbound sessions here */
1006 while (ps_tmp!=NULL)
1008 if ((ps_tmp->direction==INBOUND) && (ps_tmp->session_id == id_num) && (id_num!=0))
1010 if ((ps_tmp->recv_force_disconnect!=GNUNET_YES) && (ps_tmp->send_force_disconnect!=GNUNET_YES))
1014 ps_tmp=ps_tmp->next;
1019 ps = GNUNET_malloc(sizeof (struct Session));
1020 ps->addr = GNUNET_malloc(addr_len);
1021 memcpy(ps->addr,addr,addr_len);
1022 ps->addrlen = addr_len;
1023 ps->direction=INBOUND;
1024 ps->pending_msgs_head = NULL;
1025 ps->pending_msgs_tail = NULL;
1026 ps->send_connected=GNUNET_NO;
1027 ps->send_active=GNUNET_NO;
1028 ps->recv_connected=GNUNET_NO;
1029 ps->recv_active=GNUNET_NO;
1031 ps->session_id =id_num;
1032 ps->queue_length_cur = 0;
1033 ps->queue_length_max = GNUNET_SERVER_MAX_MESSAGE_SIZE;
1034 ps->url = create_url (plugin, ps->addr, ps->addrlen, ps->session_id);
1035 GNUNET_CONTAINER_DLL_insert(pc->head,pc->tail,ps);
1036 GNUNET_STATISTICS_update (plugin->env->stats,
1037 gettext_noop ("# HTTP inbound sessions for peers active"),
1042 *httpSessionCache = ps;
1043 if (ps->msgtok==NULL)
1044 ps->msgtok = GNUNET_SERVER_mst_create (&mhd_write_mst_cb, ps);
1046 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: HTTP Daemon has new an incoming `%s' request from peer `%s' (`%s')\n",
1049 GNUNET_i2s(&pc->identity),
1050 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen));
1054 /* Is it a PUT or a GET request */
1055 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
1057 if (ps->recv_force_disconnect == GNUNET_YES)
1059 #if DEBUG_CONNECTIONS
1060 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound connection was forced to disconnect\n",ps);
1062 ps->recv_active = GNUNET_NO;
1065 if ((*upload_data_size == 0) && (ps->recv_active==GNUNET_NO))
1067 ps->recv_endpoint = mhd_connection;
1068 ps->recv_connected = GNUNET_YES;
1069 ps->recv_active = GNUNET_YES;
1070 ps->recv_force_disconnect = GNUNET_NO;
1071 #if DEBUG_CONNECTIONS
1072 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound PUT connection connected\n",ps);
1077 /* Transmission of all data complete */
1078 if ((*upload_data_size == 0) && (ps->recv_active == GNUNET_YES))
1080 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
1081 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1082 #if DEBUG_CONNECTIONS
1083 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: Sent HTTP/1.1: 200 OK as PUT Response\n",ps);
1085 MHD_destroy_response (response);
1086 ps->recv_active=GNUNET_NO;
1090 /* Recieving data */
1091 if ((*upload_data_size > 0) && (ps->recv_active == GNUNET_YES))
1093 res = GNUNET_SERVER_mst_receive(ps->msgtok, ps, upload_data,*upload_data_size, GNUNET_NO, GNUNET_NO);
1094 (*upload_data_size) = 0;
1100 if ( 0 == strcmp (MHD_HTTP_METHOD_GET, method) )
1102 if (ps->send_force_disconnect == GNUNET_YES)
1104 #if DEBUG_CONNECTIONS
1105 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound connection was forced to disconnect\n",ps);
1107 ps->send_active = GNUNET_NO;
1110 ps->send_connected = GNUNET_YES;
1111 ps->send_active = GNUNET_YES;
1112 ps->send_endpoint = mhd_connection;
1113 ps->send_force_disconnect = GNUNET_NO;
1114 #if DEBUG_CONNECTIONS
1115 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound GET connection connected\n",ps);
1117 response = MHD_create_response_from_callback(-1,32 * 1024, &mhd_send_callback, ps, NULL);
1118 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1119 MHD_destroy_response (response);
1126 * Function that queries MHD's select sets and
1127 * starts the task waiting for them.
1128 * @param plugin plugin
1129 * @param daemon_handle the MHD daemon handle
1130 * @return gnunet task identifier
1132 static GNUNET_SCHEDULER_TaskIdentifier
1133 http_server_daemon_prepare (struct Plugin *plugin , struct MHD_Daemon *daemon_handle)
1135 GNUNET_SCHEDULER_TaskIdentifier ret;
1139 struct GNUNET_NETWORK_FDSet *wrs;
1140 struct GNUNET_NETWORK_FDSet *wws;
1141 struct GNUNET_NETWORK_FDSet *wes;
1143 unsigned long long timeout;
1145 struct GNUNET_TIME_Relative tv;
1147 ret = GNUNET_SCHEDULER_NO_TASK;
1151 wrs = GNUNET_NETWORK_fdset_create ();
1152 wes = GNUNET_NETWORK_fdset_create ();
1153 wws = GNUNET_NETWORK_fdset_create ();
1155 GNUNET_assert (MHD_YES ==
1156 MHD_get_fdset (daemon_handle,
1161 haveto = MHD_get_timeout (daemon_handle, &timeout);
1162 if (haveto == MHD_YES)
1163 tv.value = (uint64_t) timeout;
1165 tv = GNUNET_TIME_UNIT_SECONDS;
1166 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max);
1167 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max);
1168 GNUNET_NETWORK_fdset_copy_native (wes, &es, max);
1169 if (daemon_handle == plugin->http_server_daemon_v4)
1171 if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
1173 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v4);
1174 plugin->http_server_daemon_v4 = GNUNET_SCHEDULER_NO_TASK;
1177 ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
1178 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1179 GNUNET_SCHEDULER_NO_TASK,
1183 &http_server_daemon_v4_run,
1186 if (daemon_handle == plugin->http_server_daemon_v6)
1188 if (plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
1190 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v6);
1191 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
1194 ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
1195 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1196 GNUNET_SCHEDULER_NO_TASK,
1200 &http_server_daemon_v6_run,
1203 GNUNET_NETWORK_fdset_destroy (wrs);
1204 GNUNET_NETWORK_fdset_destroy (wws);
1205 GNUNET_NETWORK_fdset_destroy (wes);
1210 * Call MHD IPv4 to process pending requests and then go back
1211 * and schedule the next run.
1212 * @param cls plugin as closure
1213 * @param tc task context
1215 static void http_server_daemon_v4_run (void *cls,
1216 const struct GNUNET_SCHEDULER_TaskContext *tc)
1218 struct Plugin *plugin = cls;
1220 #if DEBUG_SCHEDULING
1221 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_READ_READY))
1222 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,"http_server_daemon_v4_run: GNUNET_SCHEDULER_REASON_READ_READY\n");
1223 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_WRITE_READY))
1224 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,"http_server_daemon_v4_run: GNUNET_SCHEDULER_REASON_WRITE_READY\n");
1225 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_TIMEOUT))
1226 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,"http_server_daemon_v4_run: GNUNET_SCHEDULER_REASON_TIMEOUT\n");
1227 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_STARTUP))
1228 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,"http_server_daemon_v4_run: GGNUNET_SCHEDULER_REASON_STARTUP\n");
1229 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1230 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,"http_server_daemon_v4_run: GGNUNET_SCHEDULER_REASON_SHUTDOWN\n");
1233 GNUNET_assert(cls !=NULL);
1234 plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
1236 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1239 GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v4));
1240 plugin->http_server_task_v4 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
1245 * Call MHD IPv6 to process pending requests and then go back
1246 * and schedule the next run.
1247 * @param cls plugin as closure
1248 * @param tc task context
1250 static void http_server_daemon_v6_run (void *cls,
1251 const struct GNUNET_SCHEDULER_TaskContext *tc)
1253 struct Plugin *plugin = cls;
1255 #if DEBUG_SCHEDULING
1256 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_READ_READY))
1257 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,"http_server_daemon_v6_run: GNUNET_SCHEDULER_REASON_READ_READY\n");
1258 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_WRITE_READY))
1259 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,"http_server_daemon_v6_run: GNUNET_SCHEDULER_REASON_WRITE_READY\n");
1260 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_TIMEOUT))
1261 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,"http_server_daemon_v6_run: GNUNET_SCHEDULER_REASON_TIMEOUT\n");
1262 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_STARTUP))
1263 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,"http_server_daemon_v6_run: GGNUNET_SCHEDULER_REASON_STARTUP\n");
1264 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1265 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,"http_server_daemon_v6_run: GGNUNET_SCHEDULER_REASON_SHUTDOWN\n");
1268 GNUNET_assert(cls !=NULL);
1269 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
1271 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1274 GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v6));
1275 plugin->http_server_task_v6 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
1278 static size_t curl_get_header_cb( void *ptr, size_t size, size_t nmemb, void *stream)
1280 struct Session * ps = stream;
1282 long http_result = 0;
1284 /* Getting last http result code */
1285 GNUNET_assert(NULL!=ps);
1286 if (ps->recv_connected==GNUNET_NO)
1288 res = curl_easy_getinfo(ps->recv_endpoint, CURLINFO_RESPONSE_CODE, &http_result);
1289 if (CURLE_OK == res)
1291 if (http_result == 200)
1293 ps->recv_connected = GNUNET_YES;
1294 ps->recv_active = GNUNET_YES;
1295 #if DEBUG_CONNECTIONS
1296 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: connected to recieve data\n",ps);
1298 // Calling send_check_connections again since receive is established
1299 send_check_connections (ps->peercontext->plugin, ps);
1306 size_t len = size * nmemb;
1308 if ((size * nmemb) < SIZE_MAX)
1309 tmp = GNUNET_malloc (len+1);
1311 if ((tmp != NULL) && (len > 0))
1313 memcpy(tmp,ptr,len);
1316 if (tmp[len-2] == 13)
1319 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: Header: %s\n",ps,tmp);
1321 GNUNET_free_non_null (tmp);
1324 return size * nmemb;
1328 * Callback called by libcurl when new headers arrive
1329 * Used to get HTTP result for curl operations
1330 * @param ptr stream to read from
1331 * @param size size of one char element
1332 * @param nmemb number of char elements
1333 * @param stream closure set by user
1334 * @return bytes read by function
1337 static size_t curl_put_header_cb( void *ptr, size_t size, size_t nmemb, void *stream)
1339 struct Session * ps = stream;
1342 size_t len = size * nmemb;
1343 long http_result = 0;
1346 /* Getting last http result code */
1347 GNUNET_assert(NULL!=ps);
1348 res = curl_easy_getinfo(ps->send_endpoint, CURLINFO_RESPONSE_CODE, &http_result);
1349 if (CURLE_OK == res)
1351 if ((http_result == 100) && (ps->send_connected==GNUNET_NO))
1353 ps->send_connected = GNUNET_YES;
1354 ps->send_active = GNUNET_YES;
1355 #if DEBUG_CONNECTIONS
1356 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: connected to send data\n",ps);
1359 if ((http_result == 200) && (ps->send_connected==GNUNET_YES))
1361 ps->send_connected = GNUNET_NO;
1362 ps->send_active = GNUNET_NO;
1363 #if DEBUG_CONNECTIONS
1364 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: sending disconnected\n",ps);
1370 if ((size * nmemb) < SIZE_MAX)
1371 tmp = GNUNET_malloc (len+1);
1373 if ((tmp != NULL) && (len > 0))
1375 memcpy(tmp,ptr,len);
1378 if (tmp[len-2] == 13)
1383 GNUNET_free_non_null (tmp);
1385 return size * nmemb;
1389 * Callback method used with libcurl
1390 * Method is called when libcurl needs to read data during sending
1391 * @param stream pointer where to write data
1392 * @param size size of an individual element
1393 * @param nmemb count of elements that can be written to the buffer
1394 * @param ptr source pointer, passed to the libcurl handle
1395 * @return bytes written to stream
1397 static size_t curl_send_cb(void *stream, size_t size, size_t nmemb, void *ptr)
1399 struct Session * ps = ptr;
1400 struct HTTP_Message * msg = ps->pending_msgs_tail;
1404 if (ps->send_active == GNUNET_NO)
1406 return CURL_READFUNC_PAUSE;
1409 if ((ps->pending_msgs_tail == NULL) && (ps->send_active == GNUNET_YES))
1411 #if DEBUG_CONNECTIONS
1412 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: No Message to send, pausing connection\n",ps);
1414 ps->send_active = GNUNET_NO;
1415 return CURL_READFUNC_PAUSE;
1418 GNUNET_assert (msg!=NULL);
1421 if (msg->pos < msg->size)
1423 /* data fit in buffer */
1424 if ((msg->size - msg->pos) <= (size * nmemb))
1426 len = (msg->size - msg->pos);
1427 memcpy(stream, &msg->buf[msg->pos], len);
1434 memcpy(stream, &msg->buf[msg->pos], len);
1439 /* no data to send */
1445 if ( msg->pos == msg->size)
1447 #if DEBUG_CONNECTIONS
1448 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,"Connection %X: Message with %u bytes sent, removing message from queue \n",ps, msg->pos);
1450 /* Calling transmit continuation */
1451 if (NULL != ps->pending_msgs_tail->transmit_cont)
1452 msg->transmit_cont (ps->pending_msgs_tail->transmit_cont_cls,&(ps->peercontext)->identity,GNUNET_OK);
1453 ps->queue_length_cur -= msg->size;
1454 remove_http_message(ps, msg);
1459 static void curl_receive_mst_cb (void *cls,
1461 const struct GNUNET_MessageHeader *message)
1463 struct Session *ps = cls;
1464 GNUNET_assert(ps != NULL);
1466 struct HTTP_PeerContext *pc = ps->peercontext;
1467 GNUNET_assert(pc != NULL);
1469 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1470 "Connection %X: Forwarding message to transport service, type %u and size %u from `%s' (`%s')\n",
1472 ntohs(message->type),
1473 ntohs(message->size),
1474 GNUNET_i2s(&(pc->identity)),http_plugin_address_to_string(NULL,ps->addr,ps->addrlen));
1476 pc->plugin->env->receive (pc->plugin->env->cls,
1485 * Callback method used with libcurl
1486 * Method is called when libcurl needs to write data during sending
1487 * @param stream pointer where to write data
1488 * @param size size of an individual element
1489 * @param nmemb count of elements that can be written to the buffer
1490 * @param ptr destination pointer, passed to the libcurl handle
1491 * @return bytes read from stream
1493 static size_t curl_receive_cb( void *stream, size_t size, size_t nmemb, void *ptr)
1495 struct Session * ps = ptr;
1496 #if DEBUG_CONNECTIONS
1497 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: %u bytes received\n",ps, size*nmemb);
1499 GNUNET_SERVER_mst_receive(ps->msgtok, ps, stream, size*nmemb, GNUNET_NO, GNUNET_NO);
1500 return (size * nmemb);
1504 static void curl_handle_finished (struct Plugin *plugin)
1506 struct Session *ps = NULL;
1507 struct HTTP_PeerContext *pc = NULL;
1508 struct CURLMsg *msg;
1509 struct HTTP_Message * cur_msg = NULL;
1517 msg = curl_multi_info_read (plugin->multi_handle, &msgs_in_queue);
1518 if ((msgs_in_queue == 0) || (msg == NULL))
1520 /* get session for affected curl handle */
1521 GNUNET_assert ( msg->easy_handle != NULL );
1522 curl_easy_getinfo(msg->easy_handle, CURLINFO_PRIVATE, &tmp);
1523 ps = (struct Session *) tmp;
1524 GNUNET_assert ( ps != NULL );
1525 pc = ps->peercontext;
1526 GNUNET_assert ( pc != NULL );
1531 if ( (msg->data.result != CURLE_OK) &&
1532 (msg->data.result != CURLE_GOT_NOTHING) )
1534 /* sending msg failed*/
1535 if (msg->easy_handle == ps->send_endpoint)
1537 #if DEBUG_CONNECTIONS
1538 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1539 _("Connection %X: HTTP PUT to peer `%s' (`%s') failed: `%s' `%s'\n"),
1541 GNUNET_i2s(&pc->identity),
1542 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
1543 "curl_multi_perform",
1544 curl_easy_strerror (msg->data.result));
1546 ps->send_connected = GNUNET_NO;
1547 ps->send_active = GNUNET_NO;
1548 curl_multi_remove_handle(plugin->multi_handle,ps->send_endpoint);
1549 //curl_easy_cleanup(ps->send_endpoint);
1550 //ps->send_endpoint=NULL;
1551 while (ps->pending_msgs_tail != NULL)
1553 cur_msg = ps->pending_msgs_tail;
1554 if ( NULL != cur_msg->transmit_cont)
1555 cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_SYSERR);
1556 ps->queue_length_cur -= cur_msg->size;
1557 remove_http_message(ps,cur_msg);
1560 /* GET connection failed */
1561 if (msg->easy_handle == ps->recv_endpoint)
1563 #if DEBUG_CONNECTIONS
1564 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1565 _("Connection %X: HTTP GET to peer `%s' (`%s') failed: `%s' `%s'\n"),
1567 GNUNET_i2s(&pc->identity),
1568 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
1569 "curl_multi_perform",
1570 curl_easy_strerror (msg->data.result));
1572 ps->recv_connected = GNUNET_NO;
1573 ps->recv_active = GNUNET_NO;
1574 curl_multi_remove_handle(plugin->multi_handle,ps->recv_endpoint);
1575 //curl_easy_cleanup(ps->recv_endpoint);
1576 //ps->recv_endpoint=NULL;
1581 if (msg->easy_handle == ps->send_endpoint)
1583 GNUNET_assert (CURLE_OK == curl_easy_getinfo(msg->easy_handle, CURLINFO_RESPONSE_CODE, &http_result));
1584 #if DEBUG_CONNECTIONS
1585 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1586 "Connection %X: HTTP PUT connection to peer `%s' (`%s') was closed with HTTP code %u\n",
1588 GNUNET_i2s(&pc->identity),
1589 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
1592 /* Calling transmit continuation */
1593 while (ps->pending_msgs_tail != NULL)
1595 cur_msg = ps->pending_msgs_tail;
1596 if ( NULL != cur_msg->transmit_cont)
1598 /* HTTP 1xx : Last message before here was informational */
1599 if ((http_result >=100) && (http_result < 200))
1600 cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_OK);
1601 /* HTTP 2xx: successful operations */
1602 if ((http_result >=200) && (http_result < 300))
1603 cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_OK);
1604 /* HTTP 3xx..5xx: error */
1605 if ((http_result >=300) && (http_result < 600))
1606 cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_SYSERR);
1608 ps->queue_length_cur -= cur_msg->size;
1609 remove_http_message(ps,cur_msg);
1612 ps->send_connected = GNUNET_NO;
1613 ps->send_active = GNUNET_NO;
1614 curl_multi_remove_handle(plugin->multi_handle,ps->send_endpoint);
1615 //curl_easy_cleanup(ps->send_endpoint);
1616 //ps->send_endpoint =NULL;
1618 if (msg->easy_handle == ps->recv_endpoint)
1620 #if DEBUG_CONNECTIONS
1621 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1622 "Connection %X: HTTP GET connection to peer `%s' (`%s') was closed with HTTP code %u\n",
1624 GNUNET_i2s(&pc->identity),
1625 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
1628 ps->recv_connected = GNUNET_NO;
1629 ps->recv_active = GNUNET_NO;
1630 curl_multi_remove_handle(plugin->multi_handle,ps->recv_endpoint);
1631 //curl_easy_cleanup(ps->recv_endpoint);
1632 //ps->recv_endpoint=NULL;
1635 if ((ps->recv_connected == GNUNET_NO) && (ps->send_connected == GNUNET_NO))
1636 remove_session (pc, ps, GNUNET_YES, GNUNET_SYSERR);
1642 while ( (msgs_in_queue > 0) );
1647 * Task performing curl operations
1648 * @param cls plugin as closure
1649 * @param tc gnunet scheduler task context
1651 static void curl_perform (void *cls,
1652 const struct GNUNET_SCHEDULER_TaskContext *tc)
1654 struct Plugin *plugin = cls;
1655 static unsigned int handles_last_run;
1659 GNUNET_assert(cls !=NULL);
1661 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
1662 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1667 mret = curl_multi_perform (plugin->multi_handle, &running);
1668 if ((running < handles_last_run) && (running>0))
1669 curl_handle_finished(plugin);
1670 handles_last_run = running;
1672 while (mret == CURLM_CALL_MULTI_PERFORM);
1673 curl_schedule(plugin);
1678 * Function setting up file descriptors and scheduling task to run
1680 * @param plugin plugin as closure
1681 * @return GNUNET_SYSERR for hard failure, GNUNET_OK for ok
1683 static int curl_schedule(struct Plugin *plugin)
1689 struct GNUNET_NETWORK_FDSet *grs;
1690 struct GNUNET_NETWORK_FDSet *gws;
1694 /* Cancel previous scheduled task */
1695 if (plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
1697 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_curl_task);
1698 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
1705 mret = curl_multi_fdset (plugin->multi_handle, &rs, &ws, &es, &max);
1706 if (mret != CURLM_OK)
1708 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1709 _("%s failed at %s:%d: `%s'\n"),
1710 "curl_multi_fdset", __FILE__, __LINE__,
1711 curl_multi_strerror (mret));
1712 return GNUNET_SYSERR;
1714 mret = curl_multi_timeout (plugin->multi_handle, &to);
1715 if (mret != CURLM_OK)
1717 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1718 _("%s failed at %s:%d: `%s'\n"),
1719 "curl_multi_timeout", __FILE__, __LINE__,
1720 curl_multi_strerror (mret));
1721 return GNUNET_SYSERR;
1724 grs = GNUNET_NETWORK_fdset_create ();
1725 gws = GNUNET_NETWORK_fdset_create ();
1726 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
1727 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
1728 plugin->http_curl_task = GNUNET_SCHEDULER_add_select (plugin->env->sched,
1729 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1730 GNUNET_SCHEDULER_NO_TASK,
1731 (to == -1) ? GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 5) : GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, to),
1736 GNUNET_NETWORK_fdset_destroy (gws);
1737 GNUNET_NETWORK_fdset_destroy (grs);
1742 * Function to log curl debug messages with GNUNET_log
1743 * @param curl handle
1744 * @param type curl_infotype
1747 * @param cls closure
1750 int curl_logger (CURL * curl, curl_infotype type , char * data, size_t size , void * cls)
1753 if (type == CURLINFO_TEXT)
1756 memcpy(text,data,size);
1757 if (text[size-1] == '\n')
1762 text[size+1] = '\0';
1764 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"CURL: Connection %X - %s", cls, text);
1770 * Function setting up curl handle and selecting message to send
1772 * @param plugin plugin
1774 * @return GNUNET_SYSERR on failure, GNUNET_NO if connecting, GNUNET_YES if ok
1776 static int send_check_connections (struct Plugin *plugin, struct Session *ps)
1779 struct HTTP_Message * msg;
1781 struct GNUNET_TIME_Relative timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
1783 if (ps->direction == OUTBOUND)
1785 /* RECV DIRECTION */
1786 /* Check if session is connected to receive data, otherwise connect to peer */
1787 if (ps->recv_connected == GNUNET_NO)
1789 int fresh = GNUNET_NO;
1790 if (ps->recv_endpoint == NULL)
1793 ps->recv_endpoint = curl_easy_init();
1796 curl_easy_setopt(ps->recv_endpoint, CURLOPT_VERBOSE, 1L);
1797 curl_easy_setopt(ps->recv_endpoint, CURLOPT_DEBUGFUNCTION , &curl_logger);
1798 curl_easy_setopt(ps->recv_endpoint, CURLOPT_DEBUGDATA , ps->recv_endpoint);
1801 curl_easy_setopt (ps->recv_endpoint, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
1802 curl_easy_setopt(ps->recv_endpoint, CURLOPT_SSL_VERIFYPEER, 0);
1803 curl_easy_setopt(ps->recv_endpoint, CURLOPT_SSL_VERIFYHOST, 0);
1805 curl_easy_setopt(ps->recv_endpoint, CURLOPT_URL, ps->url);
1806 curl_easy_setopt(ps->recv_endpoint, CURLOPT_HEADERFUNCTION, &curl_get_header_cb);
1807 curl_easy_setopt(ps->recv_endpoint, CURLOPT_WRITEHEADER, ps);
1808 curl_easy_setopt(ps->recv_endpoint, CURLOPT_READFUNCTION, curl_send_cb);
1809 curl_easy_setopt(ps->recv_endpoint, CURLOPT_READDATA, ps);
1810 curl_easy_setopt(ps->recv_endpoint, CURLOPT_WRITEFUNCTION, curl_receive_cb);
1811 curl_easy_setopt(ps->recv_endpoint, CURLOPT_WRITEDATA, ps);
1812 curl_easy_setopt(ps->recv_endpoint, CURLOPT_TIMEOUT, (long) timeout.value);
1813 curl_easy_setopt(ps->recv_endpoint, CURLOPT_PRIVATE, ps);
1814 curl_easy_setopt(ps->recv_endpoint, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT);
1815 curl_easy_setopt(ps->recv_endpoint, CURLOPT_BUFFERSIZE, 2*GNUNET_SERVER_MAX_MESSAGE_SIZE);
1816 #if CURL_TCP_NODELAY
1817 curl_easy_setopt(ps->recv_endpoint, CURLOPT_TCP_NODELAY, 1);
1820 if (fresh==GNUNET_YES)
1822 mret = curl_multi_add_handle(plugin->multi_handle, ps->recv_endpoint);
1823 if (mret != CURLM_OK)
1825 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1826 _("Connection: %X: %s failed at %s:%d: `%s'\n"),
1828 "curl_multi_add_handle", __FILE__, __LINE__,
1829 curl_multi_strerror (mret));
1830 return GNUNET_SYSERR;
1833 if (plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
1835 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_curl_task);
1836 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
1838 plugin->http_curl_task = GNUNET_SCHEDULER_add_now (plugin->env->sched, &curl_perform, plugin);
1841 /* waiting for receive direction */
1842 if (ps->recv_connected==GNUNET_NO)
1845 /* SEND DIRECTION */
1846 /* Check if session is connected to send data, otherwise connect to peer */
1847 if ((ps->send_connected == GNUNET_YES) && (ps->send_endpoint!= NULL))
1849 if (ps->send_active == GNUNET_YES)
1851 #if DEBUG_CONNECTIONS
1852 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound active, enqueueing message\n",ps);
1856 if (ps->send_active == GNUNET_NO)
1858 #if DEBUG_CONNECTIONS
1859 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound paused, unpausing existing connection and enqueueing message\n",ps);
1861 if (CURLE_OK == curl_easy_pause(ps->send_endpoint,CURLPAUSE_CONT))
1863 ps->send_active=GNUNET_YES;
1864 if (plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
1866 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_curl_task);
1867 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
1869 plugin->http_curl_task = GNUNET_SCHEDULER_add_now (plugin->env->sched, &curl_perform, plugin);
1873 return GNUNET_SYSERR;
1876 /* not connected, initiate connection */
1877 if (ps->send_connected==GNUNET_NO)
1879 int fresh = GNUNET_NO;
1880 if (NULL == ps->send_endpoint)
1882 ps->send_endpoint = curl_easy_init();
1885 GNUNET_assert (ps->send_endpoint != NULL);
1886 GNUNET_assert (NULL != ps->pending_msgs_tail);
1887 #if DEBUG_CONNECTIONS
1888 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound not connected, initiating connection\n",ps);
1890 ps->send_active = GNUNET_NO;
1891 msg = ps->pending_msgs_tail;
1894 curl_easy_setopt(ps->send_endpoint, CURLOPT_VERBOSE, 1L);
1895 curl_easy_setopt(ps->send_endpoint, CURLOPT_DEBUGFUNCTION , &curl_logger);
1896 curl_easy_setopt(ps->send_endpoint, CURLOPT_DEBUGDATA , ps->send_endpoint);
1899 curl_easy_setopt (ps->send_endpoint, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
1900 curl_easy_setopt(ps->send_endpoint, CURLOPT_SSL_VERIFYPEER, 0);
1901 curl_easy_setopt(ps->send_endpoint, CURLOPT_SSL_VERIFYHOST, 0);
1903 curl_easy_setopt(ps->send_endpoint, CURLOPT_URL, ps->url);
1904 curl_easy_setopt(ps->send_endpoint, CURLOPT_PUT, 1L);
1905 curl_easy_setopt(ps->send_endpoint, CURLOPT_HEADERFUNCTION, &curl_put_header_cb);
1906 curl_easy_setopt(ps->send_endpoint, CURLOPT_WRITEHEADER, ps);
1907 curl_easy_setopt(ps->send_endpoint, CURLOPT_READFUNCTION, curl_send_cb);
1908 curl_easy_setopt(ps->send_endpoint, CURLOPT_READDATA, ps);
1909 curl_easy_setopt(ps->send_endpoint, CURLOPT_WRITEFUNCTION, curl_receive_cb);
1910 curl_easy_setopt(ps->send_endpoint, CURLOPT_READDATA, ps);
1911 curl_easy_setopt(ps->send_endpoint, CURLOPT_TIMEOUT, (long) timeout.value);
1912 curl_easy_setopt(ps->send_endpoint, CURLOPT_PRIVATE, ps);
1913 curl_easy_setopt(ps->send_endpoint, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT);
1914 curl_easy_setopt(ps->send_endpoint, CURLOPT_BUFFERSIZE, 2 * GNUNET_SERVER_MAX_MESSAGE_SIZE);
1915 #if CURL_TCP_NODELAY
1916 curl_easy_setopt(ps->send_endpoint, CURLOPT_TCP_NODELAY, 1);
1919 if (fresh==GNUNET_YES)
1921 mret = curl_multi_add_handle(plugin->multi_handle, ps->send_endpoint);
1922 if (mret != CURLM_OK)
1924 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1925 _("Connection: %X: %s failed at %s:%d: `%s'\n"),
1927 "curl_multi_add_handle", __FILE__, __LINE__,
1928 curl_multi_strerror (mret));
1929 return GNUNET_SYSERR;
1933 if (plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
1935 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_curl_task);
1936 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
1938 plugin->http_curl_task = GNUNET_SCHEDULER_add_now (plugin->env->sched, &curl_perform, plugin);
1941 if (ps->direction == INBOUND)
1943 GNUNET_assert (NULL != ps->pending_msgs_tail);
1944 if ((ps->recv_connected==GNUNET_YES) && (ps->send_connected==GNUNET_YES) &&
1945 (ps->recv_force_disconnect==GNUNET_NO) && (ps->recv_force_disconnect==GNUNET_NO))
1948 return GNUNET_SYSERR;
1952 * select best session to transmit data to peer
1954 * @param pc peer context of target peer
1955 * @param addr address of target peer
1956 * @param addrlen address length
1957 * @param force_address does transport service enforce address?
1958 * @param session session passed by transport service
1959 * @return selected session
1962 static struct Session * send_select_session (struct HTTP_PeerContext *pc, const void * addr, size_t addrlen, int force_address, struct Session * session)
1964 struct Session * tmp = NULL;
1965 int addr_given = GNUNET_NO;
1967 if ((addr!=NULL) && (addrlen>0))
1968 addr_given = GNUNET_YES;
1970 if (force_address == GNUNET_YES)
1972 /* check session given as argument */
1973 if ((session != NULL) && (addr_given == GNUNET_YES))
1975 if (0 == memcmp(session->addr, addr, addrlen))
1977 /* connection can not be used, since it is disconnected */
1978 if ((session->recv_force_disconnect==GNUNET_NO) && (session->send_force_disconnect==GNUNET_NO))
1980 #if DEBUG_SESSION_SELECTION
1981 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using session passed by transport to send to forced address \n", session);
1987 /* check last session used */
1988 if ((pc->last_session != NULL)&& (addr_given == GNUNET_YES))
1990 if (0 == memcmp(pc->last_session->addr, addr, addrlen))
1992 /* connection can not be used, since it is disconnected */
1993 if ((pc->last_session->recv_force_disconnect==GNUNET_NO) && (pc->last_session->send_force_disconnect==GNUNET_NO))
1995 #if DEBUG_SESSION_SELECTION
1996 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using last session used to send to forced address \n", pc->last_session);
1998 return pc->last_session;
2002 /* find session in existing sessions */
2004 while ((tmp!=NULL) && (addr_given == GNUNET_YES))
2007 if (0 == memcmp(tmp->addr, addr, addrlen))
2009 /* connection can not be used, since it is disconnected */
2010 if ((tmp->recv_force_disconnect==GNUNET_NO) && (tmp->send_force_disconnect==GNUNET_NO))
2012 #if DEBUG_SESSION_SELECTION
2013 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using existing session to send to forced address \n", session);
2021 /* no session to use */
2024 if ((force_address == GNUNET_NO) || (force_address == GNUNET_SYSERR))
2026 /* check session given as argument */
2027 if (session != NULL)
2029 /* connection can not be used, since it is disconnected */
2030 if ((session->recv_force_disconnect==GNUNET_NO) && (session->send_force_disconnect==GNUNET_NO))
2032 #if DEBUG_SESSION_SELECTION
2033 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using session passed by transport to send not-forced address \n", session);
2039 /* check last session used */
2040 if (pc->last_session != NULL)
2042 /* connection can not be used, since it is disconnected */
2043 if ((pc->last_session->recv_force_disconnect==GNUNET_NO) && (pc->last_session->send_force_disconnect==GNUNET_NO))
2045 #if DEBUG_SESSION_SELECTION
2046 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using last session to send to not-forced address \n", pc->last_session);
2048 return pc->last_session;
2051 /* find session in existing sessions */
2055 /* connection can not be used, since it is disconnected */
2056 if ((tmp->recv_force_disconnect==GNUNET_NO) && (tmp->send_force_disconnect==GNUNET_NO))
2058 #if DEBUG_SESSION_SELECTION
2059 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using existing session to send to not-forced address \n", tmp);
2071 * Function that can be used by the transport service to transmit
2072 * a message using the plugin. Note that in the case of a
2073 * peer disconnecting, the continuation MUST be called
2074 * prior to the disconnect notification itself. This function
2075 * will be called with this peer's HELLO message to initiate
2076 * a fresh connection to another peer.
2078 * @param cls closure
2079 * @param target who should receive this message
2080 * @param msgbuf the message to transmit
2081 * @param msgbuf_size number of bytes in 'msgbuf'
2082 * @param priority how important is the message (most plugins will
2083 * ignore message priority and just FIFO)
2084 * @param to how long to wait at most for the transmission (does not
2085 * require plugins to discard the message after the timeout,
2086 * just advisory for the desired delay; most plugins will ignore
2088 * @param session which session must be used (or NULL for "any")
2089 * @param addr the address to use (can be NULL if the plugin
2090 * is "on its own" (i.e. re-use existing TCP connection))
2091 * @param addrlen length of the address in bytes
2092 * @param force_address GNUNET_YES if the plugin MUST use the given address,
2093 * GNUNET_NO means the plugin may use any other address and
2094 * GNUNET_SYSERR means that only reliable existing
2095 * bi-directional connections should be used (regardless
2097 * @param cont continuation to call once the message has
2098 * been transmitted (or if the transport is ready
2099 * for the next transmission call; or if the
2100 * peer disconnected...); can be NULL
2101 * @param cont_cls closure for cont
2102 * @return number of bytes used (on the physical network, with overheads);
2103 * -1 on hard errors (i.e. address invalid); 0 is a legal value
2104 * and does NOT mean that the message was not transmitted (DV)
2107 http_plugin_send (void *cls,
2108 const struct GNUNET_PeerIdentity *target,
2111 unsigned int priority,
2112 struct GNUNET_TIME_Relative to,
2113 struct Session *session,
2117 GNUNET_TRANSPORT_TransmitContinuation cont,
2120 struct Plugin *plugin = cls;
2121 struct HTTP_Message *msg;
2122 struct HTTP_PeerContext * pc;
2123 struct Session * ps = NULL;
2125 GNUNET_assert(cls !=NULL);
2129 if (force_address == GNUNET_YES)
2130 GNUNET_asprintf(&force, "forced addr.");
2131 if (force_address == GNUNET_NO)
2132 GNUNET_asprintf(&force, "any addr.");
2133 if (force_address == GNUNET_SYSERR)
2134 GNUNET_asprintf(&force,"reliable bi-direc. address addr.");
2136 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Transport tells me to send %u bytes to `%s' using %s (%s) and session: %X\n",
2140 http_plugin_address_to_string(NULL, addr, addrlen),
2146 pc = GNUNET_CONTAINER_multihashmap_get (plugin->peers, &target->hashPubKey);
2150 pc = GNUNET_malloc(sizeof (struct HTTP_PeerContext));
2151 pc->plugin = plugin;
2152 pc->session_id_counter=1;
2153 pc->last_session = NULL;
2154 memcpy(&pc->identity, target, sizeof(struct GNUNET_PeerIdentity));
2155 GNUNET_CONTAINER_multihashmap_put(plugin->peers, &pc->identity.hashPubKey, pc, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
2156 GNUNET_STATISTICS_update (plugin->env->stats,
2157 gettext_noop ("# HTTP peers active"),
2162 ps = send_select_session (pc, addr, addrlen, force_address, session);
2164 /* session not existing, but address forced -> creating new session */
2167 if ((addr!=NULL) && (addrlen!=0))
2169 ps = GNUNET_malloc(sizeof (struct Session));
2170 #if DEBUG_SESSION_SELECTION
2171 if (force_address == GNUNET_YES)
2172 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No existing connection & forced address: creating new session %X to peer %s\n", ps, GNUNET_i2s(target));
2173 if (force_address != GNUNET_YES)
2174 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No existing connection: creating new session %X to peer %s\n", ps, GNUNET_i2s(target));
2176 if ((addrlen!=0) && (addr!=NULL))
2178 ps->addr = GNUNET_malloc(addrlen);
2179 memcpy(ps->addr,addr,addrlen);
2180 ps->addrlen = addrlen;
2187 ps->direction=OUTBOUND;
2188 ps->recv_connected = GNUNET_NO;
2189 ps->recv_force_disconnect = GNUNET_NO;
2190 ps->send_connected = GNUNET_NO;
2191 ps->send_force_disconnect = GNUNET_NO;
2192 ps->pending_msgs_head = NULL;
2193 ps->pending_msgs_tail = NULL;
2195 ps->session_id = pc->session_id_counter;
2196 ps->queue_length_cur = 0;
2197 ps->queue_length_max = GNUNET_SERVER_MAX_MESSAGE_SIZE;
2198 pc->session_id_counter++;
2199 ps->url = create_url (plugin, ps->addr, ps->addrlen, ps->session_id);
2200 if (ps->msgtok == NULL)
2201 ps->msgtok = GNUNET_SERVER_mst_create (&curl_receive_mst_cb, ps);
2202 GNUNET_CONTAINER_DLL_insert(pc->head,pc->tail,ps);
2203 GNUNET_STATISTICS_update (plugin->env->stats,
2204 gettext_noop ("# HTTP outbound sessions for peers active"),
2211 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No existing session found & and no address given: no way to send this message to peer `%s'!\n", GNUNET_i2s(target));
2213 return GNUNET_SYSERR;
2217 if (msgbuf_size >= (ps->queue_length_max - ps->queue_length_cur))
2219 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,"Queue %X full: (%u) bytes in queue, would discard message (%u)\n", ps, (ps->queue_length_max - ps->queue_length_cur), msgbuf_size);
2220 //return GNUNET_SYSERR;
2224 msg = GNUNET_malloc (sizeof (struct HTTP_Message) + msgbuf_size);
2226 msg->size = msgbuf_size;
2228 msg->buf = (char *) &msg[1];
2229 msg->transmit_cont = cont;
2230 msg->transmit_cont_cls = cont_cls;
2231 memcpy (msg->buf,msgbuf, msgbuf_size);
2233 GNUNET_CONTAINER_DLL_insert(ps->pending_msgs_head,ps->pending_msgs_tail,msg);
2234 ps->queue_length_cur += msgbuf_size;
2236 if (send_check_connections (plugin, ps) == GNUNET_SYSERR)
2237 return GNUNET_SYSERR;
2238 if (force_address != GNUNET_YES)
2239 pc->last_session = ps;
2241 if (pc->last_session==NULL)
2242 pc->last_session = ps;
2249 * Function that can be used to force the plugin to disconnect
2250 * from the given peer and cancel all previous transmissions
2251 * (and their continuationc).
2253 * @param cls closure
2254 * @param target peer from which to disconnect
2257 http_plugin_disconnect (void *cls,
2258 const struct GNUNET_PeerIdentity *target)
2262 struct Plugin *plugin = cls;
2263 struct HTTP_PeerContext *pc = NULL;
2264 struct Session *ps = NULL;
2265 //struct Session *tmp = NULL;
2267 pc = GNUNET_CONTAINER_multihashmap_get (plugin->peers, &target->hashPubKey);
2274 /* Telling transport that session is getting disconnected */
2275 plugin->env->session_end(plugin, target, ps);
2276 if (ps->direction==OUTBOUND)
2278 if (ps->send_endpoint!=NULL)
2280 //GNUNET_assert(CURLM_OK == curl_multi_remove_handle(plugin->multi_handle,ps->send_endpoint));
2281 //curl_easy_cleanup(ps->send_endpoint);
2282 //ps->send_endpoint=NULL;
2283 ps->send_force_disconnect = GNUNET_YES;
2285 if (ps->recv_endpoint!=NULL)
2287 //GNUNET_assert(CURLM_OK == curl_multi_remove_handle(plugin->multi_handle,ps->recv_endpoint));
2288 //curl_easy_cleanup(ps->recv_endpoint);
2289 //ps->recv_endpoint=NULL;
2290 ps->recv_force_disconnect = GNUNET_YES;
2294 if (ps->direction==INBOUND)
2296 ps->recv_force_disconnect = GNUNET_YES;
2297 ps->send_force_disconnect = GNUNET_YES;
2300 while (ps->pending_msgs_head!=NULL)
2302 remove_http_message(ps, ps->pending_msgs_head);
2304 ps->recv_active = GNUNET_NO;
2305 ps->send_active = GNUNET_NO;
2312 * Convert the transports address to a nice, human-readable
2315 * @param cls closure
2316 * @param type name of the transport that generated the address
2317 * @param addr one of the addresses of the host, NULL for the last address
2318 * the specific address format depends on the transport
2319 * @param addrlen length of the address
2320 * @param numeric should (IP) addresses be displayed in numeric form?
2321 * @param timeout after how long should we give up?
2322 * @param asc function to call on each string
2323 * @param asc_cls closure for asc
2326 http_plugin_address_pretty_printer (void *cls,
2331 struct GNUNET_TIME_Relative timeout,
2332 GNUNET_TRANSPORT_AddressStringCallback
2335 const struct IPv4HttpAddress *t4;
2336 const struct IPv6HttpAddress *t6;
2337 struct sockaddr_in a4;
2338 struct sockaddr_in6 a6;
2344 GNUNET_assert(cls !=NULL);
2345 if (addrlen == sizeof (struct IPv6HttpAddress))
2347 address = GNUNET_malloc (INET6_ADDRSTRLEN);
2349 a6.sin6_addr = t6->ipv6_addr;
2350 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
2351 port = ntohs(t6->u6_port);
2353 else if (addrlen == sizeof (struct IPv4HttpAddress))
2355 address = GNUNET_malloc (INET_ADDRSTRLEN);
2357 a4.sin_addr.s_addr = t4->ipv4_addr;
2358 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
2359 port = ntohs(t4->u_port);
2363 /* invalid address */
2364 GNUNET_break_op (0);
2365 asc (asc_cls, NULL);
2368 res = GNUNET_asprintf(&ret,"%s://%s:%u/", PROTOCOL_PREFIX, address, port);
2369 GNUNET_free (address);
2370 GNUNET_assert(res != 0);
2372 GNUNET_free_non_null (ret);
2378 * Another peer has suggested an address for this
2379 * peer and transport plugin. Check that this could be a valid
2380 * address. If so, consider adding it to the list
2383 * @param cls closure
2384 * @param addr pointer to the address
2385 * @param addrlen length of addr
2386 * @return GNUNET_OK if this is a plausible address for this peer
2390 http_plugin_address_suggested (void *cls,
2391 const void *addr, size_t addrlen)
2393 struct Plugin *plugin = cls;
2394 struct IPv4HttpAddress *v4;
2395 struct IPv6HttpAddress *v6;
2398 GNUNET_assert(cls !=NULL);
2399 if ((addrlen != sizeof (struct IPv4HttpAddress)) &&
2400 (addrlen != sizeof (struct IPv6HttpAddress)))
2402 return GNUNET_SYSERR;
2404 if (addrlen == sizeof (struct IPv4HttpAddress))
2406 v4 = (struct IPv4HttpAddress *) addr;
2407 /* Not skipping loopback
2408 if (INADDR_LOOPBACK == ntohl(v4->ipv4_addr))
2410 return GNUNET_SYSERR;
2412 port = ntohs (v4->u_port);
2413 if (port != plugin->port_inbound)
2415 return GNUNET_SYSERR;
2418 if (addrlen == sizeof (struct IPv6HttpAddress))
2420 v6 = (struct IPv6HttpAddress *) addr;
2421 if (IN6_IS_ADDR_LINKLOCAL (&v6->ipv6_addr))
2423 return GNUNET_SYSERR;
2425 port = ntohs (v6->u6_port);
2426 if (port != plugin->port_inbound)
2428 return GNUNET_SYSERR;
2437 * Function called for a quick conversion of the binary address to
2438 * a numeric address. Note that the caller must not free the
2439 * address and that the next call to this function is allowed
2440 * to override the address again.
2442 * @param cls closure
2443 * @param addr binary address
2444 * @param addrlen length of the address
2445 * @return string representing the same address
2448 http_plugin_address_to_string (void *cls,
2452 const struct IPv4HttpAddress *t4;
2453 const struct IPv6HttpAddress *t6;
2454 struct sockaddr_in a4;
2455 struct sockaddr_in6 a6;
2461 if (addrlen == sizeof (struct IPv6HttpAddress))
2463 address = GNUNET_malloc (INET6_ADDRSTRLEN);
2465 a6.sin6_addr = t6->ipv6_addr;
2466 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
2467 port = ntohs(t6->u6_port);
2469 else if (addrlen == sizeof (struct IPv4HttpAddress))
2471 address = GNUNET_malloc (INET_ADDRSTRLEN);
2473 a4.sin_addr.s_addr = t4->ipv4_addr;
2474 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
2475 port = ntohs(t4->u_port);
2479 /* invalid address */
2482 res = GNUNET_asprintf(&ret,"%s:%u",address,port);
2483 GNUNET_free (address);
2484 GNUNET_assert(res != 0);
2490 * Exit point from the plugin.
2493 LIBGNUNET_PLUGIN_TRANSPORT_DONE (void *cls)
2495 struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
2496 struct Plugin *plugin = api->cls;
2498 GNUNET_assert(cls !=NULL);
2500 if (plugin->http_server_daemon_v4 != NULL)
2502 MHD_stop_daemon (plugin->http_server_daemon_v4);
2503 plugin->http_server_daemon_v4 = NULL;
2505 if (plugin->http_server_daemon_v6 != NULL)
2507 MHD_stop_daemon (plugin->http_server_daemon_v6);
2508 plugin->http_server_daemon_v6 = NULL;
2511 if ( plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
2513 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v4);
2514 plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
2517 if ( plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
2519 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v6);
2520 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
2523 /* free all peer information */
2524 if (plugin->peers!=NULL)
2526 GNUNET_CONTAINER_multihashmap_iterate (plugin->peers,
2527 &remove_peer_context_Iterator,
2529 GNUNET_CONTAINER_multihashmap_destroy (plugin->peers);
2531 if (plugin->multi_handle!=NULL)
2533 mret = curl_multi_cleanup(plugin->multi_handle);
2535 if ( CURLM_OK != mret)
2536 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"curl multihandle clean up failed\n");
2538 plugin->multi_handle = NULL;
2540 curl_global_cleanup();
2542 if ( plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
2544 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_curl_task);
2545 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
2548 GNUNET_free_non_null (plugin->bind4_address);
2549 GNUNET_free_non_null (plugin->bind6_address);
2550 GNUNET_free_non_null(plugin->bind_hostname);
2552 GNUNET_free_non_null (plugin->crypto_init);
2553 GNUNET_free_non_null (plugin->cert);
2554 GNUNET_free_non_null (plugin->key);
2556 GNUNET_free (plugin);
2559 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Unload %s plugin complete...\n", PROTOCOL_PREFIX);
2566 load_certificate( const char * file )
2568 struct GNUNET_DISK_FileHandle * gn_file;
2573 if (0!=STAT(file, &fstat))
2575 text = GNUNET_malloc (fstat.st_size+1);
2576 gn_file = GNUNET_DISK_file_open(file,GNUNET_DISK_OPEN_READ, GNUNET_DISK_PERM_USER_READ);
2582 if (GNUNET_SYSERR == GNUNET_DISK_file_read(gn_file, text, fstat.st_size))
2585 GNUNET_DISK_file_close(gn_file);
2588 text[fstat.st_size] = '\0';
2589 GNUNET_DISK_file_close(gn_file);
2597 * Entry point for the plugin.
2600 LIBGNUNET_PLUGIN_TRANSPORT_INIT (void *cls)
2602 struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
2603 struct Plugin *plugin;
2604 struct GNUNET_TRANSPORT_PluginFunctions *api;
2605 struct GNUNET_TIME_Relative gn_timeout;
2606 long long unsigned int port;
2607 char * component_name;
2609 char * key_file = NULL;
2610 char * cert_file = NULL;
2613 GNUNET_assert(cls !=NULL);
2615 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting %s plugin...\n", PROTOCOL_PREFIX);
2617 GNUNET_asprintf(&component_name,"transport-%s",PROTOCOL_PREFIX);
2619 plugin = GNUNET_malloc (sizeof (struct Plugin));
2620 plugin->stats = env->stats;
2622 plugin->peers = NULL;
2623 plugin->bind4_address = NULL;
2624 plugin->use_ipv6 = GNUNET_YES;
2625 plugin->use_ipv4 = GNUNET_YES;
2627 api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
2629 api->send = &http_plugin_send;
2630 api->disconnect = &http_plugin_disconnect;
2631 api->address_pretty_printer = &http_plugin_address_pretty_printer;
2632 api->check_address = &http_plugin_address_suggested;
2633 api->address_to_string = &http_plugin_address_to_string;
2635 /* Hashing our identity to use it in URLs */
2636 GNUNET_CRYPTO_hash_to_enc ( &(plugin->env->my_identity->hashPubKey), &plugin->my_ascii_hash_ident);
2639 if (GNUNET_CONFIGURATION_have_value (env->cfg,
2640 component_name, "USE_IPv6"))
2642 plugin->use_ipv6 = GNUNET_CONFIGURATION_get_value_yesno (env->cfg,
2647 if (GNUNET_CONFIGURATION_have_value (env->cfg,
2648 component_name, "USE_IPv4"))
2650 plugin->use_ipv4 = GNUNET_CONFIGURATION_get_value_yesno (env->cfg,
2651 component_name,"USE_IPv4");
2653 /* Reading port number from config file */
2655 GNUNET_CONFIGURATION_get_value_number (env->cfg,
2661 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
2663 _("Require valid port number for transport plugin `%s' in configuration!\n"),
2665 GNUNET_free(component_name);
2666 LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
2670 /* Reading ipv4 addresse to bind to from config file */
2671 if ((plugin->use_ipv4==GNUNET_YES) && (GNUNET_CONFIGURATION_have_value (env->cfg,
2672 component_name, "BINDTO4")))
2674 GNUNET_break (GNUNET_OK ==
2675 GNUNET_CONFIGURATION_get_value_string (env->cfg,
2678 &plugin->bind_hostname));
2679 plugin->bind4_address = GNUNET_malloc(sizeof(struct sockaddr_in));
2680 plugin->bind4_address->sin_family = AF_INET;
2681 plugin->bind4_address->sin_port = htons (port);
2683 if (plugin->bind_hostname!=NULL)
2685 if (inet_pton(AF_INET,plugin->bind_hostname, &plugin->bind4_address->sin_addr)<=0)
2687 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
2689 _("Misconfigured address to bind to in configuration!\n"));
2690 GNUNET_free(plugin->bind4_address);
2691 GNUNET_free(plugin->bind_hostname);
2692 plugin->bind_hostname = NULL;
2693 plugin->bind4_address = NULL;
2698 /* Reading ipv4 addresse to bind to from config file */
2699 if ((plugin->use_ipv6==GNUNET_YES) && (GNUNET_CONFIGURATION_have_value (env->cfg,
2700 component_name, "BINDTO6")))
2702 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (env->cfg,
2705 &plugin->bind_hostname))
2707 plugin->bind6_address = GNUNET_malloc(sizeof(struct sockaddr_in6));
2708 plugin->bind6_address->sin6_family = AF_INET6;
2709 plugin->bind6_address->sin6_port = htons (port);
2710 if (plugin->bind_hostname!=NULL)
2712 if (inet_pton(AF_INET6,plugin->bind_hostname, &plugin->bind6_address->sin6_addr)<=0)
2714 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
2716 _("Misconfigured address to bind to in configuration!\n"));
2717 GNUNET_free(plugin->bind6_address);
2718 GNUNET_free(plugin->bind_hostname);
2719 plugin->bind_hostname = NULL;
2720 plugin->bind6_address = NULL;
2727 /* Reading HTTPS crypto related configuration */
2728 /* Get crypto init string from config */
2729 if (GNUNET_CONFIGURATION_have_value (env->cfg,
2730 "transport-https", "CRYPTO_INIT"))
2732 GNUNET_CONFIGURATION_get_value_string (env->cfg,
2735 &plugin->crypto_init);
2739 GNUNET_asprintf(&plugin->crypto_init,"NORMAL");
2742 /* Get private key file from config */
2743 if (GNUNET_CONFIGURATION_have_value (env->cfg,
2744 "transport-https", "KEY_FILE"))
2746 GNUNET_CONFIGURATION_get_value_string (env->cfg,
2752 GNUNET_asprintf(&key_file,"https.key");
2754 /* Get private key file from config */
2755 if (GNUNET_CONFIGURATION_have_value (env->cfg,"transport-https", "CERT_FILE"))
2757 GNUNET_CONFIGURATION_get_value_string (env->cfg,
2762 if (cert_file==NULL)
2763 GNUNET_asprintf(&cert_file,"https.cert");
2765 /* read key & certificates from file */
2766 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Loading TLS certificate `%s' `%s'\n", key_file, cert_file);
2768 plugin->key = load_certificate( key_file );
2769 plugin->cert = load_certificate( cert_file );
2771 if ((plugin->key==NULL) || (plugin->cert==NULL))
2775 GNUNET_asprintf(&cmd,"gnunet-transport-certificate-creation %s %s", key_file, cert_file);
2776 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "No usable TLS certificate found, creating certificate \n");
2781 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
2783 _("Could not create a new TLS certificate, shell script `%s' failed!\n"),cmd,
2785 GNUNET_free (key_file);
2786 GNUNET_free (cert_file);
2787 GNUNET_free (component_name);
2789 LIBGNUNET_PLUGIN_TRANSPORT_DONE(api);
2796 plugin->key = load_certificate( key_file );
2797 plugin->cert = load_certificate( cert_file );
2799 if ((plugin->key==NULL) || (plugin->cert==NULL))
2801 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
2803 _("No usable TLS certificate found and creating one failed! \n"),
2805 GNUNET_free (key_file);
2806 GNUNET_free (cert_file);
2807 GNUNET_free (component_name);
2809 LIBGNUNET_PLUGIN_TRANSPORT_DONE(api);
2813 GNUNET_free (key_file);
2814 GNUNET_free (cert_file);
2816 GNUNET_assert((plugin->key!=NULL) && (plugin->cert!=NULL));
2817 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "TLS certificate loaded\n");
2820 GNUNET_assert ((port > 0) && (port <= 65535));
2821 plugin->port_inbound = port;
2822 gn_timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
2823 unsigned int timeout = (gn_timeout.value) / 1000;
2824 if ((plugin->http_server_daemon_v6 == NULL) && (plugin->use_ipv6 == GNUNET_YES) && (port != 0))
2826 struct sockaddr * tmp = (struct sockaddr *) plugin->bind6_address;
2827 plugin->http_server_daemon_v6 = MHD_start_daemon (
2837 plugin , &mdh_access_cb, plugin,
2838 MHD_OPTION_SOCK_ADDR, tmp,
2839 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 32,
2840 //MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 6,
2842 MHD_OPTION_HTTPS_PRIORITIES, plugin->crypto_init,
2843 MHD_OPTION_HTTPS_MEM_KEY, plugin->key,
2844 MHD_OPTION_HTTPS_MEM_CERT, plugin->cert,
2846 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) timeout,
2847 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (2 * GNUNET_SERVER_MAX_MESSAGE_SIZE),
2848 MHD_OPTION_NOTIFY_COMPLETED, &mhd_termination_cb, NULL,
2849 MHD_OPTION_EXTERNAL_LOGGER, mhd_logger, plugin->mhd_log,
2852 if ((plugin->http_server_daemon_v4 == NULL) && (plugin->use_ipv4 == GNUNET_YES) && (port != 0))
2854 plugin->http_server_daemon_v4 = MHD_start_daemon (
2864 plugin , &mdh_access_cb, plugin,
2865 MHD_OPTION_SOCK_ADDR, (struct sockaddr_in *)plugin->bind4_address,
2866 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 32,
2867 //MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 6,
2869 MHD_OPTION_HTTPS_PRIORITIES, plugin->crypto_init,
2870 MHD_OPTION_HTTPS_MEM_KEY, plugin->key,
2871 MHD_OPTION_HTTPS_MEM_CERT, plugin->cert,
2873 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) timeout,
2874 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (2 * GNUNET_SERVER_MAX_MESSAGE_SIZE),
2875 MHD_OPTION_NOTIFY_COMPLETED, &mhd_termination_cb, NULL,
2876 MHD_OPTION_EXTERNAL_LOGGER, mhd_logger, plugin->mhd_log,
2879 if (plugin->http_server_daemon_v4 != NULL)
2880 plugin->http_server_task_v4 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
2881 if (plugin->http_server_daemon_v6 != NULL)
2882 plugin->http_server_task_v6 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
2885 if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
2888 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 bound to %s with port %u\n",(plugin->bind_hostname!=NULL) ? plugin->bind_hostname : "every address",port);
2891 else if ((plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK) && (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK))
2894 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv6 bound to %s with port %u\n",(plugin->bind_hostname!=NULL) ? plugin->bind_hostname : "every address", port);
2897 else if ((plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK) && (plugin->http_server_task_v4 == GNUNET_SCHEDULER_NO_TASK))
2900 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 and IPv6 bound to %s with port %u\n",(plugin->bind_hostname!=NULL) ? plugin->bind_hostname : "every address", port);
2906 if ((plugin->use_ipv6 == GNUNET_YES) && (plugin->use_ipv4 == GNUNET_YES))
2907 GNUNET_asprintf(&tmp,"with IPv4 and IPv6 enabled");
2908 if ((plugin->use_ipv6 == GNUNET_NO) && (plugin->use_ipv4 == GNUNET_YES))
2909 GNUNET_asprintf(&tmp,"with IPv4 enabled");
2910 if ((plugin->use_ipv6 == GNUNET_YES) && (plugin->use_ipv4 == GNUNET_NO))
2911 GNUNET_asprintf(&tmp,"with IPv6 enabled");
2912 if ((plugin->use_ipv6 == GNUNET_NO) && (plugin->use_ipv4 == GNUNET_NO))
2913 GNUNET_asprintf(&tmp,"with NO IP PROTOCOL enabled");
2914 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,"HTTP Server with %s could not be started on port %u! %s plugin failed!\n",tmp, port, PROTOCOL_PREFIX);
2916 GNUNET_free (component_name);
2917 LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
2921 /* Initializing cURL */
2922 curl_global_init(CURL_GLOBAL_ALL);
2923 plugin->multi_handle = curl_multi_init();
2925 if ( NULL == plugin->multi_handle )
2927 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
2929 _("Could not initialize curl multi handle, failed to start %s plugin!\n"),
2931 GNUNET_free(component_name);
2932 LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
2936 plugin->peers = GNUNET_CONTAINER_multihashmap_create (10);
2937 GNUNET_OS_network_interfaces_list (&process_interfaces, plugin);
2939 GNUNET_free(component_name);
2943 /* end of plugin_transport_http.c */