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/gnunet_transport_plugin.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 "gnunet_transport_plugin.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
101 struct IPv4HttpAddress * next;
104 * Linked list previous
106 struct IPv4HttpAddress * prev;
109 * IPv4 address, in network byte order.
111 uint32_t ipv4_addr GNUNET_PACKED;
114 * Port number, in network byte order.
116 uint16_t u_port GNUNET_PACKED;
122 * Network format for IPv6 addresses.
124 struct IPv6HttpAddress
129 struct IPv6HttpAddress * next;
132 * Linked list previous
134 struct IPv6HttpAddress * prev;
139 struct in6_addr ipv6_addr GNUNET_PACKED;
142 * Port number, in network byte order.
144 uint16_t u6_port GNUNET_PACKED;
150 * Message to send using http
155 * next pointer for double linked list
157 struct HTTP_Message * next;
160 * previous pointer for double linked list
162 struct HTTP_Message * prev;
165 * buffer containing data to send
170 * amount of data already sent
180 * Continuation function to call once the transmission buffer
181 * has again space available. NULL if there is no
182 * continuation to call.
184 GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
187 * Closure for transmit_cont.
189 void *transmit_cont_cls;
193 struct HTTP_PeerContext
198 struct GNUNET_PeerIdentity identity;
201 * Pointer to the global plugin struct.
203 struct Plugin *plugin;
206 * Linked list of connections with this peer
209 struct Session * head;
212 * Linked list of connections with this peer
215 struct Session * tail;
218 * id for next session
220 size_t session_id_counter;
223 * Last session used to send data
225 struct Session * last_session;
228 * The task resetting inbound quota delay
230 GNUNET_SCHEDULER_TaskIdentifier reset_task;
233 * Delay from transport service inbound quota tracker when to receive data again
235 struct GNUNET_TIME_Relative delay;
244 struct SessionHeader header;
247 * next session in linked list
249 struct Session * next;
252 * previous session in linked list
254 struct Session * prev;
257 * address of this session
272 * Message queue for outbound messages
275 struct HTTP_Message * pending_msgs_head;
278 * Message queue for outbound messages
281 struct HTTP_Message * pending_msgs_tail;
284 * partner peer this connection belongs to
286 struct HTTP_PeerContext * peercontext;
289 * message stream tokenizer for incoming data
291 struct GNUNET_SERVER_MessageStreamTokenizer *msgtok;
295 * outbound: OUTBOUND (GNUNET_YES)
296 * inbound : INBOUND (GNUNET_NO)
298 unsigned int direction;
301 * is session connected to send data?
303 unsigned int send_connected;
306 * is send connection active?
308 unsigned int send_active;
311 * connection disconnect forced (e.g. from transport)
313 unsigned int send_force_disconnect;
316 * is session connected to receive data?
318 unsigned int recv_connected;
321 * is receive connection active?
323 unsigned int recv_active;
326 * connection disconnect forced (e.g. from transport)
328 unsigned int recv_force_disconnect;
332 * id for next session
333 * NOTE: 0 is not an ID, zero is not defined. A correct ID is always > 0
338 * entity managing sending data
339 * outbound session: CURL *
340 * inbound session: mhd_connection *
342 void * send_endpoint;
345 * entity managing recieving data
346 * outbound session: CURL *
347 * inbound session: mhd_connection *
349 void * recv_endpoint;
354 size_t queue_length_cur;
359 size_t queue_length_max;
364 * Encapsulation of all of the state of the plugin.
371 struct GNUNET_TRANSPORT_PluginEnvironment *env;
374 * Handle for reporting statistics.
376 struct GNUNET_STATISTICS_Handle *stats;
381 uint16_t port_inbound;
383 struct GNUNET_CONTAINER_MultiHashMap *peers;
386 * Daemon for listening for new IPv4 connections.
388 struct MHD_Daemon *http_server_daemon_v4;
391 * Daemon for listening for new IPv6connections.
393 struct MHD_Daemon *http_server_daemon_v6;
396 * Our primary task for http daemon handling IPv4 connections
398 GNUNET_SCHEDULER_TaskIdentifier http_server_task_v4;
401 * Our primary task for http daemon handling IPv6 connections
403 GNUNET_SCHEDULER_TaskIdentifier http_server_task_v6;
406 * The task sending data
408 GNUNET_SCHEDULER_TaskIdentifier http_curl_task;
413 CURLM * multi_handle;
418 struct IPv4HttpAddress * ipv4_addr_head;
423 struct IPv4HttpAddress * ipv4_addr_tail;
428 struct IPv6HttpAddress * ipv6_addr_head;
433 struct IPv6HttpAddress * ipv6_addr_tail;
436 * Our ASCII encoded, hashed peer identity
437 * This string is used to distinguish between connections and is added to the urls
439 struct GNUNET_CRYPTO_HashAsciiEncoded my_ascii_hash_ident;
442 * IPv4 Address the plugin binds to
444 struct sockaddr_in * bind4_address;
447 * IPv6 Address the plugins binds to
449 struct sockaddr_in6 * bind6_address;
452 * Hostname to bind to
454 char * bind_hostname;
467 * Closure passed by MHD to the mhd_logger function
471 /* only needed for HTTPS plugin */
473 /* The certificate MHD uses as an \0 terminated string */
476 /* The private key MHD uses as an \0 terminated string */
479 /* crypto init string */
486 * Function called for a quick conversion of the binary address to
487 * a numeric address. Note that the caller must not free the
488 * address and that the next call to this function is allowed
489 * to override the address again.
492 * @param addr binary address
493 * @param addrlen length of the address
494 * @return string representing the same address
497 http_plugin_address_to_string (void *cls,
503 * Call MHD to process pending ipv4 requests and then go back
504 * and schedule the next run.
506 static void http_server_daemon_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
508 * Call MHD to process pending ipv6 requests and then go back
509 * and schedule the next run.
511 static void http_server_daemon_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
514 * Function setting up curl handle and selecting message to send
515 * @param plugin plugin
516 * @param ses session to send data to
517 * @param con connection
518 * @return bytes sent to peer
520 static int send_check_connections (struct Plugin *plugin, struct Session *ps);
523 * Function setting up file descriptors and scheduling task to run
525 * @param ses session to send data to
528 static int curl_schedule (struct Plugin *plugin);
531 * Task scheduled to reset the inbound quota delay for a specific peer
532 * @param cls plugin as closure
533 * @param tc task context
535 static void reset_inbound_quota_delay (void *cls,
536 const struct GNUNET_SCHEDULER_TaskContext *tc)
538 struct HTTP_PeerContext * pc;
540 GNUNET_assert(cls !=NULL);
542 pc = (struct HTTP_PeerContext *) cls;
543 pc->reset_task = GNUNET_SCHEDULER_NO_TASK;
545 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
548 pc->delay = GNUNET_TIME_relative_get_zero ();
553 * Creates a valid url from passed address and id
554 * @param plugin plugin
555 * @param addr address to create url from
556 * @param addrlen address lenth
557 * @param id session id
558 * @return the created url
560 static char * create_url(struct Plugin *plugin, const void * addr, size_t addrlen, size_t id)
563 char *addr_str = (char *) http_plugin_address_to_string(NULL, addr, addrlen);
565 GNUNET_assert ((addr!=NULL) && (addrlen != 0));
566 GNUNET_asprintf(&url,
567 "%s://%s/%s;%u", PROTOCOL_PREFIX, addr_str,
568 (char *) (&plugin->my_ascii_hash_ident),id);
569 GNUNET_free_non_null(addr_str);
574 * Removes a message from the linked list of messages
577 * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
579 static int remove_http_message (struct Session * ps, struct HTTP_Message * msg)
581 GNUNET_CONTAINER_DLL_remove(ps->pending_msgs_head,ps->pending_msgs_tail,msg);
587 * Iterator to remove peer context
588 * @param cls the plugin
589 * @param key the peers public key hashcode
590 * @param value the peer context
591 * @return GNUNET_YES on success
593 int remove_peer_context_Iterator (void *cls, const GNUNET_HashCode *key, void *value)
595 struct Plugin *plugin = cls;
596 struct HTTP_PeerContext * pc = value;
597 struct Session * ps = pc->head;
598 struct Session * tmp = NULL;
599 struct HTTP_Message * msg = NULL;
600 struct HTTP_Message * msg_tmp = NULL;
602 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Freeing context for peer `%s'\n",GNUNET_i2s(&pc->identity));
604 GNUNET_CONTAINER_multihashmap_remove (plugin->peers, &pc->identity.hashPubKey, pc);
607 plugin->env->session_end(plugin, &pc->identity, ps);
610 GNUNET_free_non_null (ps->addr);
611 GNUNET_free(ps->url);
612 if (ps->msgtok != NULL)
613 GNUNET_SERVER_mst_destroy (ps->msgtok);
615 msg = ps->pending_msgs_head;
622 if (ps->direction==OUTBOUND)
624 if (ps->send_endpoint!=NULL)
625 curl_easy_cleanup(ps->send_endpoint);
626 if (ps->recv_endpoint!=NULL)
627 curl_easy_cleanup(ps->recv_endpoint);
634 GNUNET_STATISTICS_update (plugin->env->stats,
635 gettext_noop ("# HTTP peers active"),
643 * Removes a session from the linked list of sessions
644 * @param pc peer context
646 * @param call_msg_cont GNUNET_YES to call pending message continuations, otherwise no
647 * @param call_msg_cont_result result to call message continuations with
648 * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
650 static int remove_session (struct HTTP_PeerContext * pc, struct Session * ps, int call_msg_cont, int call_msg_cont_result)
652 struct HTTP_Message * msg;
653 struct Plugin * plugin = ps->peercontext->plugin;
655 #if DEBUG_CONNECTIONS
656 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);
658 plugin->env->session_end(plugin, &pc->identity, ps);
660 GNUNET_free_non_null (ps->addr);
661 GNUNET_SERVER_mst_destroy (ps->msgtok);
662 GNUNET_free(ps->url);
664 if (ps->direction==INBOUND)
666 if (ps->recv_endpoint != NULL)
668 curl_easy_cleanup(ps->recv_endpoint);
669 ps->recv_endpoint = NULL;
671 if (ps->send_endpoint != NULL)
673 curl_easy_cleanup(ps->send_endpoint);
674 ps->send_endpoint = NULL;
678 msg = ps->pending_msgs_head;
681 if ((call_msg_cont == GNUNET_YES) && (msg->transmit_cont!=NULL))
683 msg->transmit_cont (msg->transmit_cont_cls,&pc->identity,call_msg_cont_result);
685 GNUNET_CONTAINER_DLL_remove(ps->pending_msgs_head,ps->pending_msgs_head,msg);
687 msg = ps->pending_msgs_head;
690 GNUNET_CONTAINER_DLL_remove(pc->head,pc->tail,ps);
694 /* no sessions left remove peer */
698 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No sessions left for peer `%s', removing context\n",GNUNET_i2s(&pc->identity));
700 remove_peer_context_Iterator(plugin, &pc->identity.hashPubKey, pc);
708 * Add the IP of our network interface to the list of
709 * our external IP addresses.
711 * @param cls the 'struct Plugin*'
712 * @param name name of the interface
713 * @param isDefault do we think this may be our default interface
714 * @param addr address of the interface
715 * @param addrlen number of bytes in addr
716 * @return GNUNET_OK to continue iterating
719 process_interfaces (void *cls,
722 const struct sockaddr *addr, socklen_t addrlen)
724 struct Plugin *plugin = cls;
725 struct IPv4HttpAddress * t4;
726 struct IPv6HttpAddress * t6;
730 GNUNET_assert(cls !=NULL);
731 af = addr->sa_family;
732 if ((af == AF_INET) && (plugin->use_ipv4 == GNUNET_YES) && (plugin->bind6_address == NULL))
734 struct in_addr bnd_cmp = ((struct sockaddr_in *) addr)->sin_addr;
735 t4 = GNUNET_malloc(sizeof(struct IPv4HttpAddress));
736 /* Not skipping loopback addresses
737 if (INADDR_LOOPBACK == ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr))
743 t4->ipv4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
744 t4->u_port = htons (plugin->port_inbound);
745 if (plugin->bind4_address != NULL)
747 if (0 == memcmp(&plugin->bind4_address->sin_addr, &bnd_cmp, sizeof (struct in_addr)))
749 GNUNET_CONTAINER_DLL_insert(plugin->ipv4_addr_head,plugin->ipv4_addr_tail,t4);
750 plugin->env->notify_address(plugin->env->cls,PROTOCOL_PREFIX,t4, sizeof (struct IPv4HttpAddress), GNUNET_TIME_UNIT_FOREVER_REL);
758 GNUNET_CONTAINER_DLL_insert(plugin->ipv4_addr_head,plugin->ipv4_addr_tail,t4);
759 plugin->env->notify_address(plugin->env->cls,PROTOCOL_PREFIX,t4, sizeof (struct IPv4HttpAddress), GNUNET_TIME_UNIT_FOREVER_REL);
763 else if ((af == AF_INET6) && (plugin->use_ipv6 == GNUNET_YES) && (plugin->bind4_address == NULL))
765 struct in6_addr bnd_cmp6 = ((struct sockaddr_in6 *) addr)->sin6_addr;
766 if (IN6_IS_ADDR_LINKLOCAL (&((struct sockaddr_in6 *) addr)->sin6_addr))
770 t6 = GNUNET_malloc(sizeof(struct IPv6HttpAddress));
771 GNUNET_assert(t6 != NULL);
772 if (plugin->bind6_address != NULL)
774 if (0 == memcmp(&plugin->bind6_address->sin6_addr, &bnd_cmp6, sizeof (struct in6_addr)))
776 memcpy (&t6->ipv6_addr,
777 &((struct sockaddr_in6 *) addr)->sin6_addr,
778 sizeof (struct in6_addr));
779 t6->u6_port = htons (plugin->port_inbound);
780 plugin->env->notify_address(plugin->env->cls,PROTOCOL_PREFIX,t6,sizeof (struct IPv6HttpAddress) , GNUNET_TIME_UNIT_FOREVER_REL);
781 GNUNET_CONTAINER_DLL_insert(plugin->ipv6_addr_head,plugin->ipv6_addr_tail,t6);
787 memcpy (&t6->ipv6_addr,
788 &((struct sockaddr_in6 *) addr)->sin6_addr,
789 sizeof (struct in6_addr));
790 t6->u6_port = htons (plugin->port_inbound);
791 GNUNET_CONTAINER_DLL_insert(plugin->ipv6_addr_head,plugin->ipv6_addr_tail,t6);
792 plugin->env->notify_address(plugin->env->cls,PROTOCOL_PREFIX,t6,sizeof (struct IPv6HttpAddress) , GNUNET_TIME_UNIT_FOREVER_REL);
799 * External logging function for MHD
800 * @param arg arguments
801 * @param fmt format string
802 * @param ap list of arguments
804 void mhd_logger (void * arg, const char * fmt, va_list ap)
807 vsnprintf(text, 1024, fmt, ap);
809 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,"MHD: %s \n", text);
813 static void mhd_termination_cb (void *cls, struct MHD_Connection * connection, void **httpSessionCache)
815 struct Session * ps = *httpSessionCache;
818 struct HTTP_PeerContext * pc = ps->peercontext;
820 if (connection==ps->recv_endpoint)
822 #if DEBUG_CONNECTIONS
823 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound connection from peer `%s' was terminated\n", ps, GNUNET_i2s(&pc->identity));
825 ps->recv_active = GNUNET_NO;
826 ps->recv_connected = GNUNET_NO;
827 ps->recv_endpoint = NULL;
829 if (connection==ps->send_endpoint)
832 ps->send_active = GNUNET_NO;
833 ps->send_connected = GNUNET_NO;
834 ps->send_endpoint = NULL;
835 #if DEBUG_CONNECTIONS
836 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound connection from peer `%s' was terminated\n", ps, GNUNET_i2s(&pc->identity));
840 /* if both connections disconnected, remove session */
841 if ((ps->send_connected == GNUNET_NO) && (ps->recv_connected == GNUNET_NO))
843 GNUNET_STATISTICS_update (pc->plugin->env->stats,
844 gettext_noop ("# HTTP inbound sessions for peers active"),
847 remove_session(pc,ps,GNUNET_YES,GNUNET_SYSERR);
852 * Callback called by MessageStreamTokenizer when a message has arrived
853 * @param cls current session as closure
854 * @param client clien
855 * @param message the message to be forwarded to transport service
858 static void mhd_write_mst_cb (void *cls,
860 const struct GNUNET_MessageHeader *message)
862 struct GNUNET_TIME_Relative delay;
863 struct Session *ps = cls;
864 GNUNET_assert(ps != NULL);
866 struct HTTP_PeerContext *pc = ps->peercontext;
867 GNUNET_assert(pc != NULL);
869 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
870 "Connection %X: Forwarding message to transport service, type %u and size %u from `%s' (`%s')\n",
872 ntohs(message->type),
873 ntohs(message->size),
874 GNUNET_i2s(&(ps->peercontext)->identity),http_plugin_address_to_string(NULL,ps->addr,ps->addrlen));
876 struct GNUNET_TRANSPORT_ATS_Information distance[2];
877 distance[0].type = htonl (GNUNET_TRANSPORT_ATS_QUALITY_NET_DISTANCE);
878 distance[0].value = htonl (1);
879 distance[1].type = htonl (GNUNET_TRANSPORT_ATS_ARRAY_TERMINATOR);
880 distance[1].value = htonl (0);
882 delay = pc->plugin->env->receive (ps->peercontext->plugin->env->cls,
885 (const struct GNUNET_TRANSPORT_ATS_Information *) &distance,
891 if (pc->reset_task != GNUNET_SCHEDULER_NO_TASK)
892 GNUNET_SCHEDULER_cancel (pc->reset_task);
894 if (delay.rel_value > 0)
897 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: Inbound quota management: delay next read for %llu ms \n", ps, delay.rel_value);
899 pc->reset_task = GNUNET_SCHEDULER_add_delayed (delay, &reset_inbound_quota_delay, pc);
904 * Check if incoming connection is accepted.
905 * NOTE: Here every connection is accepted
906 * @param cls plugin as closure
907 * @param addr address of incoming connection
908 * @param addr_len address length of incoming connection
909 * @return MHD_YES if connection is accepted, MHD_NO if connection is rejected
913 mhd_accept_cb (void *cls, const struct sockaddr *addr, socklen_t addr_len)
916 struct Plugin *plugin = cls;
918 /* Every connection is accepted, nothing more to do here */
924 * Callback called by MHD when it needs data to send
925 * @param cls current session
926 * @param pos position in buffer
927 * @param buf the buffer to write data to
928 * @param max max number of bytes available in buffer
929 * @return bytes written to buffer
932 mhd_send_callback (void *cls, uint64_t pos, char *buf, size_t max)
934 struct Session * ps = cls;
935 struct HTTP_PeerContext * pc;
936 struct HTTP_Message * msg;
939 GNUNET_assert (ps!=NULL);
941 pc = ps->peercontext;
942 msg = ps->pending_msgs_tail;
943 if (ps->send_force_disconnect==GNUNET_YES)
945 #if DEBUG_CONNECTIONS
946 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound forced to disconnect\n",ps);
953 if ((msg->size-msg->pos) <= max)
955 memcpy(buf,&msg->buf[msg->pos],(msg->size-msg->pos));
956 bytes_read = msg->size-msg->pos;
957 msg->pos+=(msg->size-msg->pos);
961 memcpy(buf,&msg->buf[msg->pos],max);
966 if (msg->pos==msg->size)
968 if (NULL!=msg->transmit_cont)
969 msg->transmit_cont (msg->transmit_cont_cls,&pc->identity,GNUNET_OK);
970 ps->queue_length_cur -= msg->size;
971 remove_http_message(ps,msg);
974 #if DEBUG_CONNECTIONS
975 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: MHD has sent %u bytes\n", ps, bytes_read);
981 * Process GET or PUT request received via MHD. For
982 * GET, queue response that will send back our pending
983 * messages. For PUT, process incoming data and send
984 * to GNUnet core. In either case, check if a session
985 * already exists and create a new one if not.
988 mhd_access_cb (void *cls,
989 struct MHD_Connection *mhd_connection,
993 const char *upload_data,
994 size_t * upload_data_size, void **httpSessionCache)
996 struct Plugin *plugin = cls;
997 struct MHD_Response *response;
998 const union MHD_ConnectionInfo * conn_info;
1000 struct sockaddr_in *addrin;
1001 struct sockaddr_in6 *addrin6;
1003 char address[INET6_ADDRSTRLEN+14];
1004 struct GNUNET_PeerIdentity pi_in;
1007 struct IPv4HttpAddress ipv4addr;
1008 struct IPv6HttpAddress ipv6addr;
1010 struct HTTP_PeerContext *pc = NULL;
1011 struct Session *ps = NULL;
1012 struct Session *ps_tmp = NULL;
1014 int res = GNUNET_NO;
1015 int send_error_to_client;
1017 size_t addr_len = 0 ;
1019 GNUNET_assert(cls !=NULL);
1020 send_error_to_client = GNUNET_NO;
1022 if (NULL == *httpSessionCache)
1024 /* check url for peer identity , if invalid send HTTP 404*/
1025 size_t len = strlen(&url[1]);
1026 char * peer = GNUNET_malloc(104+1);
1028 if ((len>104) && (url[104]==';'))
1030 char * id = GNUNET_malloc((len-104)+1);
1031 strcpy(id,&url[105]);
1032 memcpy(peer,&url[1],103);
1034 id_num = strtoul ( id, NULL , 10);
1037 res = GNUNET_CRYPTO_hash_from_string (peer, &(pi_in.hashPubKey));
1039 if ( GNUNET_SYSERR == res )
1041 response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
1042 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
1043 MHD_destroy_response (response);
1044 #if DEBUG_CONNECTIONS
1046 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, sent HTTP 1.1/404\n");
1048 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, could not send error\n");
1055 ps = *httpSessionCache;
1056 pc = ps->peercontext;
1059 if (NULL == *httpSessionCache)
1061 /* get peer context */
1062 pc = GNUNET_CONTAINER_multihashmap_get (plugin->peers, &pi_in.hashPubKey);
1066 pc = GNUNET_malloc(sizeof (struct HTTP_PeerContext));
1067 pc->plugin = plugin;
1068 pc->session_id_counter=1;
1069 pc->last_session = NULL;
1070 memcpy(&pc->identity, &pi_in, sizeof(struct GNUNET_PeerIdentity));
1071 GNUNET_CONTAINER_multihashmap_put(plugin->peers, &pc->identity.hashPubKey, pc, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
1072 GNUNET_STATISTICS_update (plugin->env->stats,
1073 gettext_noop ("# HTTP peers active"),
1078 conn_info = MHD_get_connection_info(mhd_connection, MHD_CONNECTION_INFO_CLIENT_ADDRESS );
1079 /* Incoming IPv4 connection */
1080 if ( AF_INET == conn_info->client_addr->sin_family)
1082 addrin = conn_info->client_addr;
1083 inet_ntop(addrin->sin_family, &(addrin->sin_addr),address,INET_ADDRSTRLEN);
1084 memcpy(&ipv4addr.ipv4_addr,&(addrin->sin_addr),sizeof(struct in_addr));
1085 ipv4addr.u_port = addrin->sin_port;
1087 addr_len = sizeof(struct IPv4HttpAddress);
1089 /* Incoming IPv6 connection */
1090 if ( AF_INET6 == conn_info->client_addr->sin_family)
1092 addrin6 = (struct sockaddr_in6 *) conn_info->client_addr;
1093 inet_ntop(addrin6->sin6_family, &(addrin6->sin6_addr),address,INET6_ADDRSTRLEN);
1094 memcpy(&ipv6addr.ipv6_addr,&(addrin6->sin6_addr),sizeof(struct in6_addr));
1095 ipv6addr.u6_port = addrin6->sin6_port;
1097 addr_len = sizeof(struct IPv6HttpAddress);
1100 GNUNET_assert (addr != NULL);
1101 GNUNET_assert (addr_len != 0);
1104 /* only inbound sessions here */
1107 while (ps_tmp!=NULL)
1109 if ((ps_tmp->direction==INBOUND) && (ps_tmp->session_id == id_num) && (id_num!=0))
1111 if ((ps_tmp->recv_force_disconnect!=GNUNET_YES) && (ps_tmp->send_force_disconnect!=GNUNET_YES))
1115 ps_tmp=ps_tmp->next;
1120 ps = GNUNET_malloc(sizeof (struct Session));
1121 ps->addr = GNUNET_malloc(addr_len);
1122 memcpy(ps->addr,addr,addr_len);
1123 ps->addrlen = addr_len;
1124 ps->direction=INBOUND;
1125 ps->pending_msgs_head = NULL;
1126 ps->pending_msgs_tail = NULL;
1127 ps->send_connected=GNUNET_NO;
1128 ps->send_active=GNUNET_NO;
1129 ps->recv_connected=GNUNET_NO;
1130 ps->recv_active=GNUNET_NO;
1132 ps->session_id =id_num;
1133 ps->queue_length_cur = 0;
1134 ps->queue_length_max = GNUNET_SERVER_MAX_MESSAGE_SIZE;
1135 ps->url = create_url (plugin, ps->addr, ps->addrlen, ps->session_id);
1136 GNUNET_CONTAINER_DLL_insert(pc->head,pc->tail,ps);
1137 GNUNET_STATISTICS_update (plugin->env->stats,
1138 gettext_noop ("# HTTP inbound sessions for peers active"),
1143 *httpSessionCache = ps;
1144 if (ps->msgtok==NULL)
1145 ps->msgtok = GNUNET_SERVER_mst_create (&mhd_write_mst_cb, ps);
1147 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: HTTP Daemon has new an incoming `%s' request from peer `%s' (`%s')\n",
1150 GNUNET_i2s(&pc->identity),
1151 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen));
1155 /* Is it a PUT or a GET request */
1156 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
1158 if (ps->recv_force_disconnect == GNUNET_YES)
1160 #if DEBUG_CONNECTIONS
1161 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound connection was forced to disconnect\n",ps);
1163 ps->recv_active = GNUNET_NO;
1166 if ((*upload_data_size == 0) && (ps->recv_active==GNUNET_NO))
1168 ps->recv_endpoint = mhd_connection;
1169 ps->recv_connected = GNUNET_YES;
1170 ps->recv_active = GNUNET_YES;
1171 ps->recv_force_disconnect = GNUNET_NO;
1172 #if DEBUG_CONNECTIONS
1173 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound PUT connection connected\n",ps);
1178 /* Transmission of all data complete */
1179 if ((*upload_data_size == 0) && (ps->recv_active == GNUNET_YES))
1181 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
1182 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1183 #if DEBUG_CONNECTIONS
1184 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: Sent HTTP/1.1: 200 OK as PUT Response\n",ps);
1186 MHD_destroy_response (response);
1187 ps->recv_active=GNUNET_NO;
1191 /* Recieving data */
1192 if ((*upload_data_size > 0) && (ps->recv_active == GNUNET_YES))
1194 if (pc->delay.rel_value == 0)
1197 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: PUT with %u bytes forwarded to MST\n", ps, *upload_data_size);
1199 res = GNUNET_SERVER_mst_receive(ps->msgtok, ps, upload_data, *upload_data_size, GNUNET_NO, GNUNET_NO);
1200 (*upload_data_size) = 0;
1205 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: no inbound bandwidth available! Next read was delayed for %llu ms\n", ps, ps->peercontext->delay.rel_value);
1213 if ( 0 == strcmp (MHD_HTTP_METHOD_GET, method) )
1215 if (ps->send_force_disconnect == GNUNET_YES)
1217 #if DEBUG_CONNECTIONS
1218 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound connection was forced to disconnect\n",ps);
1220 ps->send_active = GNUNET_NO;
1223 ps->send_connected = GNUNET_YES;
1224 ps->send_active = GNUNET_YES;
1225 ps->send_endpoint = mhd_connection;
1226 ps->send_force_disconnect = GNUNET_NO;
1227 #if DEBUG_CONNECTIONS
1228 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound GET connection connected\n",ps);
1230 response = MHD_create_response_from_callback(-1,32 * 1024, &mhd_send_callback, ps, NULL);
1231 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1232 MHD_destroy_response (response);
1239 * Function that queries MHD's select sets and
1240 * starts the task waiting for them.
1241 * @param plugin plugin
1242 * @param daemon_handle the MHD daemon handle
1243 * @return gnunet task identifier
1245 static GNUNET_SCHEDULER_TaskIdentifier
1246 http_server_daemon_prepare (struct Plugin *plugin , struct MHD_Daemon *daemon_handle)
1248 GNUNET_SCHEDULER_TaskIdentifier ret;
1252 struct GNUNET_NETWORK_FDSet *wrs;
1253 struct GNUNET_NETWORK_FDSet *wws;
1254 struct GNUNET_NETWORK_FDSet *wes;
1256 unsigned long long timeout;
1258 struct GNUNET_TIME_Relative tv;
1260 ret = GNUNET_SCHEDULER_NO_TASK;
1264 wrs = GNUNET_NETWORK_fdset_create ();
1265 wes = GNUNET_NETWORK_fdset_create ();
1266 wws = GNUNET_NETWORK_fdset_create ();
1268 GNUNET_assert (MHD_YES ==
1269 MHD_get_fdset (daemon_handle,
1274 haveto = MHD_get_timeout (daemon_handle, &timeout);
1275 if (haveto == MHD_YES)
1276 tv.rel_value = (uint64_t) timeout;
1278 tv = GNUNET_TIME_UNIT_SECONDS;
1279 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
1280 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
1281 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
1282 if (daemon_handle == plugin->http_server_daemon_v4)
1284 if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
1286 GNUNET_SCHEDULER_cancel(plugin->http_server_task_v4);
1287 plugin->http_server_daemon_v4 = GNUNET_SCHEDULER_NO_TASK;
1290 ret = GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1291 GNUNET_SCHEDULER_NO_TASK,
1295 &http_server_daemon_v4_run,
1298 if (daemon_handle == plugin->http_server_daemon_v6)
1300 if (plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
1302 GNUNET_SCHEDULER_cancel(plugin->http_server_task_v6);
1303 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
1306 ret = GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1307 GNUNET_SCHEDULER_NO_TASK,
1311 &http_server_daemon_v6_run,
1314 GNUNET_NETWORK_fdset_destroy (wrs);
1315 GNUNET_NETWORK_fdset_destroy (wws);
1316 GNUNET_NETWORK_fdset_destroy (wes);
1321 * Call MHD IPv4 to process pending requests and then go back
1322 * and schedule the next run.
1323 * @param cls plugin as closure
1324 * @param tc task context
1326 static void http_server_daemon_v4_run (void *cls,
1327 const struct GNUNET_SCHEDULER_TaskContext *tc)
1329 struct Plugin *plugin = cls;
1331 #if DEBUG_SCHEDULING
1332 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_READ_READY))
1333 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"http_server_daemon_v4_run: GNUNET_SCHEDULER_REASON_READ_READY\n");
1334 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_WRITE_READY))
1335 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"http_server_daemon_v4_run: GNUNET_SCHEDULER_REASON_WRITE_READY\n");
1336 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_TIMEOUT))
1337 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"http_server_daemon_v4_run: GNUNET_SCHEDULER_REASON_TIMEOUT\n");
1338 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_STARTUP))
1339 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"http_server_daemon_v4_run: GGNUNET_SCHEDULER_REASON_STARTUP\n");
1340 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1341 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"http_server_daemon_v4_run: GGNUNET_SCHEDULER_REASON_SHUTDOWN\n");
1344 GNUNET_assert(cls !=NULL);
1345 plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
1347 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1350 GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v4));
1351 plugin->http_server_task_v4 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
1356 * Call MHD IPv6 to process pending requests and then go back
1357 * and schedule the next run.
1358 * @param cls plugin as closure
1359 * @param tc task context
1361 static void http_server_daemon_v6_run (void *cls,
1362 const struct GNUNET_SCHEDULER_TaskContext *tc)
1364 struct Plugin *plugin = cls;
1366 #if DEBUG_SCHEDULING
1367 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_READ_READY))
1368 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"http_server_daemon_v6_run: GNUNET_SCHEDULER_REASON_READ_READY\n");
1369 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_WRITE_READY))
1370 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"http_server_daemon_v6_run: GNUNET_SCHEDULER_REASON_WRITE_READY\n");
1371 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_TIMEOUT))
1372 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"http_server_daemon_v6_run: GNUNET_SCHEDULER_REASON_TIMEOUT\n");
1373 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_STARTUP))
1374 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"http_server_daemon_v6_run: GGNUNET_SCHEDULER_REASON_STARTUP\n");
1375 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1376 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"http_server_daemon_v6_run: GGNUNET_SCHEDULER_REASON_SHUTDOWN\n");
1379 GNUNET_assert(cls !=NULL);
1380 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
1382 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1385 GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v6));
1386 plugin->http_server_task_v6 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
1389 static size_t curl_get_header_cb( void *ptr, size_t size, size_t nmemb, void *stream)
1391 struct Session * ps = stream;
1393 long http_result = 0;
1395 /* Getting last http result code */
1396 GNUNET_assert(NULL!=ps);
1397 if (ps->recv_connected==GNUNET_NO)
1399 res = curl_easy_getinfo(ps->recv_endpoint, CURLINFO_RESPONSE_CODE, &http_result);
1400 if (CURLE_OK == res)
1402 if (http_result == 200)
1404 ps->recv_connected = GNUNET_YES;
1405 ps->recv_active = GNUNET_YES;
1406 #if DEBUG_CONNECTIONS
1407 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: connected to recieve data\n",ps);
1409 // Calling send_check_connections again since receive is established
1410 send_check_connections (ps->peercontext->plugin, ps);
1417 size_t len = size * nmemb;
1419 if ((size * nmemb) < SIZE_MAX)
1420 tmp = GNUNET_malloc (len+1);
1422 if ((tmp != NULL) && (len > 0))
1424 memcpy(tmp,ptr,len);
1427 if (tmp[len-2] == 13)
1430 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: Header: %s\n",ps,tmp);
1432 GNUNET_free_non_null (tmp);
1435 return size * nmemb;
1439 * Callback called by libcurl when new headers arrive
1440 * Used to get HTTP result for curl operations
1441 * @param ptr stream to read from
1442 * @param size size of one char element
1443 * @param nmemb number of char elements
1444 * @param stream closure set by user
1445 * @return bytes read by function
1448 static size_t curl_put_header_cb( void *ptr, size_t size, size_t nmemb, void *stream)
1450 struct Session * ps = stream;
1453 size_t len = size * nmemb;
1454 long http_result = 0;
1457 /* Getting last http result code */
1458 GNUNET_assert(NULL!=ps);
1459 res = curl_easy_getinfo(ps->send_endpoint, CURLINFO_RESPONSE_CODE, &http_result);
1460 if (CURLE_OK == res)
1462 if ((http_result == 100) && (ps->send_connected==GNUNET_NO))
1464 ps->send_connected = GNUNET_YES;
1465 ps->send_active = GNUNET_YES;
1466 #if DEBUG_CONNECTIONS
1467 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: connected to send data\n",ps);
1470 if ((http_result == 200) && (ps->send_connected==GNUNET_YES))
1472 ps->send_connected = GNUNET_NO;
1473 ps->send_active = GNUNET_NO;
1474 #if DEBUG_CONNECTIONS
1475 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: sending disconnected\n",ps);
1481 if ((size * nmemb) < SIZE_MAX)
1482 tmp = GNUNET_malloc (len+1);
1484 if ((tmp != NULL) && (len > 0))
1486 memcpy(tmp,ptr,len);
1489 if (tmp[len-2] == 13)
1494 GNUNET_free_non_null (tmp);
1496 return size * nmemb;
1500 * Callback method used with libcurl
1501 * Method is called when libcurl needs to read data during sending
1502 * @param stream pointer where to write data
1503 * @param size size of an individual element
1504 * @param nmemb count of elements that can be written to the buffer
1505 * @param ptr source pointer, passed to the libcurl handle
1506 * @return bytes written to stream
1508 static size_t curl_send_cb(void *stream, size_t size, size_t nmemb, void *ptr)
1510 struct Session * ps = ptr;
1511 struct HTTP_Message * msg = ps->pending_msgs_tail;
1515 if (ps->send_active == GNUNET_NO)
1517 return CURL_READFUNC_PAUSE;
1520 if ((ps->pending_msgs_tail == NULL) && (ps->send_active == GNUNET_YES))
1522 #if DEBUG_CONNECTIONS
1523 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: No Message to send, pausing connection\n",ps);
1525 ps->send_active = GNUNET_NO;
1526 return CURL_READFUNC_PAUSE;
1529 GNUNET_assert (msg!=NULL);
1532 if (msg->pos < msg->size)
1534 /* data fit in buffer */
1535 if ((msg->size - msg->pos) <= (size * nmemb))
1537 len = (msg->size - msg->pos);
1538 memcpy(stream, &msg->buf[msg->pos], len);
1545 memcpy(stream, &msg->buf[msg->pos], len);
1550 /* no data to send */
1556 if ( msg->pos == msg->size)
1558 #if DEBUG_CONNECTIONS
1559 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: Message with %u bytes sent, removing message from queue \n",ps, msg->pos);
1561 /* Calling transmit continuation */
1562 if (NULL != ps->pending_msgs_tail->transmit_cont)
1563 msg->transmit_cont (ps->pending_msgs_tail->transmit_cont_cls,&(ps->peercontext)->identity,GNUNET_OK);
1564 ps->queue_length_cur -= msg->size;
1565 remove_http_message(ps, msg);
1570 static void curl_receive_mst_cb (void *cls,
1572 const struct GNUNET_MessageHeader *message)
1574 struct Session *ps = cls;
1575 struct GNUNET_TIME_Relative delay;
1576 GNUNET_assert(ps != NULL);
1578 struct HTTP_PeerContext *pc = ps->peercontext;
1579 GNUNET_assert(pc != NULL);
1581 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1582 "Connection %X: Forwarding message to transport service, type %u and size %u from `%s' (`%s')\n",
1584 ntohs(message->type),
1585 ntohs(message->size),
1586 GNUNET_i2s(&(pc->identity)),http_plugin_address_to_string(NULL,ps->addr,ps->addrlen));
1588 struct GNUNET_TRANSPORT_ATS_Information distance[2];
1589 distance[0].type = htonl (GNUNET_TRANSPORT_ATS_QUALITY_NET_DISTANCE);
1590 distance[0].value = htonl (1);
1591 distance[1].type = htonl (GNUNET_TRANSPORT_ATS_ARRAY_TERMINATOR);
1592 distance[1].value = htonl (0);
1594 delay = pc->plugin->env->receive (pc->plugin->env->cls,
1597 (const struct GNUNET_TRANSPORT_ATS_Information *) &distance, 2,
1603 if (pc->reset_task != GNUNET_SCHEDULER_NO_TASK)
1604 GNUNET_SCHEDULER_cancel (pc->reset_task);
1606 if (delay.rel_value > 0)
1609 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: Inbound quota management: delay next read for %llu ms \n", ps, delay.rel_value);
1611 pc->reset_task = GNUNET_SCHEDULER_add_delayed (delay, &reset_inbound_quota_delay, pc);
1617 * Callback method used with libcurl
1618 * Method is called when libcurl needs to write data during sending
1619 * @param stream pointer where to write data
1620 * @param size size of an individual element
1621 * @param nmemb count of elements that can be written to the buffer
1622 * @param ptr destination pointer, passed to the libcurl handle
1623 * @return bytes read from stream
1625 static size_t curl_receive_cb( void *stream, size_t size, size_t nmemb, void *ptr)
1627 struct Session * ps = ptr;
1629 if (ps->peercontext->delay.rel_value > 0)
1632 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: no inbound bandwidth available! Next read was delayed for %llu ms\n", ps, ps->peercontext->delay.rel_value);
1637 #if DEBUG_CONNECTIONS
1638 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: %u bytes received\n",ps, size*nmemb);
1640 GNUNET_SERVER_mst_receive(ps->msgtok, ps, stream, size*nmemb, GNUNET_NO, GNUNET_NO);
1641 return (size * nmemb);
1645 static void curl_handle_finished (struct Plugin *plugin)
1647 struct Session *ps = NULL;
1648 struct HTTP_PeerContext *pc = NULL;
1649 struct CURLMsg *msg;
1650 struct HTTP_Message * cur_msg = NULL;
1658 msg = curl_multi_info_read (plugin->multi_handle, &msgs_in_queue);
1659 if ((msgs_in_queue == 0) || (msg == NULL))
1661 /* get session for affected curl handle */
1662 GNUNET_assert ( msg->easy_handle != NULL );
1663 curl_easy_getinfo(msg->easy_handle, CURLINFO_PRIVATE, &tmp);
1664 ps = (struct Session *) tmp;
1665 GNUNET_assert ( ps != NULL );
1666 pc = ps->peercontext;
1667 GNUNET_assert ( pc != NULL );
1672 if ( (msg->data.result != CURLE_OK) &&
1673 (msg->data.result != CURLE_GOT_NOTHING) )
1675 /* sending msg failed*/
1676 if (msg->easy_handle == ps->send_endpoint)
1678 #if DEBUG_CONNECTIONS
1679 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1680 _("Connection %X: HTTP PUT to peer `%s' (`%s') failed: `%s' `%s'\n"),
1682 GNUNET_i2s(&pc->identity),
1683 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
1684 "curl_multi_perform",
1685 curl_easy_strerror (msg->data.result));
1687 ps->send_connected = GNUNET_NO;
1688 ps->send_active = GNUNET_NO;
1689 curl_multi_remove_handle(plugin->multi_handle,ps->send_endpoint);
1690 //curl_easy_cleanup(ps->send_endpoint);
1691 //ps->send_endpoint=NULL;
1692 while (ps->pending_msgs_tail != NULL)
1694 cur_msg = ps->pending_msgs_tail;
1695 if ( NULL != cur_msg->transmit_cont)
1696 cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_SYSERR);
1697 ps->queue_length_cur -= cur_msg->size;
1698 remove_http_message(ps,cur_msg);
1701 /* GET connection failed */
1702 if (msg->easy_handle == ps->recv_endpoint)
1704 #if DEBUG_CONNECTIONS
1705 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1706 _("Connection %X: HTTP GET to peer `%s' (`%s') failed: `%s' `%s'\n"),
1708 GNUNET_i2s(&pc->identity),
1709 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
1710 "curl_multi_perform",
1711 curl_easy_strerror (msg->data.result));
1713 ps->recv_connected = GNUNET_NO;
1714 ps->recv_active = GNUNET_NO;
1715 curl_multi_remove_handle(plugin->multi_handle,ps->recv_endpoint);
1716 //curl_easy_cleanup(ps->recv_endpoint);
1717 //ps->recv_endpoint=NULL;
1722 if (msg->easy_handle == ps->send_endpoint)
1724 GNUNET_assert (CURLE_OK == curl_easy_getinfo(msg->easy_handle, CURLINFO_RESPONSE_CODE, &http_result));
1725 #if DEBUG_CONNECTIONS
1726 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1727 "Connection %X: HTTP PUT connection to peer `%s' (`%s') was closed with HTTP code %u\n",
1729 GNUNET_i2s(&pc->identity),
1730 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
1733 /* Calling transmit continuation */
1734 while (ps->pending_msgs_tail != NULL)
1736 cur_msg = ps->pending_msgs_tail;
1737 if ( NULL != cur_msg->transmit_cont)
1739 /* HTTP 1xx : Last message before here was informational */
1740 if ((http_result >=100) && (http_result < 200))
1741 cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_OK);
1742 /* HTTP 2xx: successful operations */
1743 if ((http_result >=200) && (http_result < 300))
1744 cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_OK);
1745 /* HTTP 3xx..5xx: error */
1746 if ((http_result >=300) && (http_result < 600))
1747 cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_SYSERR);
1749 ps->queue_length_cur -= cur_msg->size;
1750 remove_http_message(ps,cur_msg);
1753 ps->send_connected = GNUNET_NO;
1754 ps->send_active = GNUNET_NO;
1755 curl_multi_remove_handle(plugin->multi_handle,ps->send_endpoint);
1756 //curl_easy_cleanup(ps->send_endpoint);
1757 //ps->send_endpoint =NULL;
1759 if (msg->easy_handle == ps->recv_endpoint)
1761 #if DEBUG_CONNECTIONS
1762 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1763 "Connection %X: HTTP GET connection to peer `%s' (`%s') was closed with HTTP code %u\n",
1765 GNUNET_i2s(&pc->identity),
1766 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
1769 ps->recv_connected = GNUNET_NO;
1770 ps->recv_active = GNUNET_NO;
1771 curl_multi_remove_handle(plugin->multi_handle,ps->recv_endpoint);
1772 //curl_easy_cleanup(ps->recv_endpoint);
1773 //ps->recv_endpoint=NULL;
1776 if ((ps->recv_connected == GNUNET_NO) && (ps->send_connected == GNUNET_NO))
1777 remove_session (pc, ps, GNUNET_YES, GNUNET_SYSERR);
1783 while ( (msgs_in_queue > 0) );
1788 * Task performing curl operations
1789 * @param cls plugin as closure
1790 * @param tc gnunet scheduler task context
1792 static void curl_perform (void *cls,
1793 const struct GNUNET_SCHEDULER_TaskContext *tc)
1795 struct Plugin *plugin = cls;
1796 static unsigned int handles_last_run;
1800 GNUNET_assert(cls !=NULL);
1802 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
1803 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1808 mret = curl_multi_perform (plugin->multi_handle, &running);
1809 if ((running < handles_last_run) && (running>0))
1810 curl_handle_finished(plugin);
1811 handles_last_run = running;
1813 while (mret == CURLM_CALL_MULTI_PERFORM);
1814 curl_schedule(plugin);
1819 * Function setting up file descriptors and scheduling task to run
1821 * @param plugin plugin as closure
1822 * @return GNUNET_SYSERR for hard failure, GNUNET_OK for ok
1824 static int curl_schedule(struct Plugin *plugin)
1830 struct GNUNET_NETWORK_FDSet *grs;
1831 struct GNUNET_NETWORK_FDSet *gws;
1835 /* Cancel previous scheduled task */
1836 if (plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
1838 GNUNET_SCHEDULER_cancel(plugin->http_curl_task);
1839 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
1846 mret = curl_multi_fdset (plugin->multi_handle, &rs, &ws, &es, &max);
1847 if (mret != CURLM_OK)
1849 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1850 _("%s failed at %s:%d: `%s'\n"),
1851 "curl_multi_fdset", __FILE__, __LINE__,
1852 curl_multi_strerror (mret));
1853 return GNUNET_SYSERR;
1855 mret = curl_multi_timeout (plugin->multi_handle, &to);
1856 if (mret != CURLM_OK)
1858 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1859 _("%s failed at %s:%d: `%s'\n"),
1860 "curl_multi_timeout", __FILE__, __LINE__,
1861 curl_multi_strerror (mret));
1862 return GNUNET_SYSERR;
1865 grs = GNUNET_NETWORK_fdset_create ();
1866 gws = GNUNET_NETWORK_fdset_create ();
1867 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
1868 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
1869 plugin->http_curl_task = GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1870 GNUNET_SCHEDULER_NO_TASK,
1871 (to == -1) ? GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 5) : GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, to),
1876 GNUNET_NETWORK_fdset_destroy (gws);
1877 GNUNET_NETWORK_fdset_destroy (grs);
1882 * Function to log curl debug messages with GNUNET_log
1883 * @param curl handle
1884 * @param type curl_infotype
1887 * @param cls closure
1890 int curl_logger (CURL * curl, curl_infotype type , char * data, size_t size , void * cls)
1893 if (type == CURLINFO_TEXT)
1896 memcpy(text,data,size);
1897 if (text[size-1] == '\n')
1902 text[size+1] = '\0';
1904 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"CURL: Connection %X - %s", cls, text);
1910 * Function setting up curl handle and selecting message to send
1912 * @param plugin plugin
1914 * @return GNUNET_SYSERR on failure, GNUNET_NO if connecting, GNUNET_YES if ok
1916 static int send_check_connections (struct Plugin *plugin, struct Session *ps)
1919 struct HTTP_Message * msg;
1921 struct GNUNET_TIME_Relative timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
1923 if (ps->direction == OUTBOUND)
1925 /* RECV DIRECTION */
1926 /* Check if session is connected to receive data, otherwise connect to peer */
1927 if (ps->recv_connected == GNUNET_NO)
1929 int fresh = GNUNET_NO;
1930 if (ps->recv_endpoint == NULL)
1933 ps->recv_endpoint = curl_easy_init();
1936 curl_easy_setopt(ps->recv_endpoint, CURLOPT_VERBOSE, 1L);
1937 curl_easy_setopt(ps->recv_endpoint, CURLOPT_DEBUGFUNCTION , &curl_logger);
1938 curl_easy_setopt(ps->recv_endpoint, CURLOPT_DEBUGDATA , ps->recv_endpoint);
1941 curl_easy_setopt (ps->recv_endpoint, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
1942 curl_easy_setopt(ps->recv_endpoint, CURLOPT_SSL_VERIFYPEER, 0);
1943 curl_easy_setopt(ps->recv_endpoint, CURLOPT_SSL_VERIFYHOST, 0);
1945 curl_easy_setopt(ps->recv_endpoint, CURLOPT_URL, ps->url);
1946 curl_easy_setopt(ps->recv_endpoint, CURLOPT_HEADERFUNCTION, &curl_get_header_cb);
1947 curl_easy_setopt(ps->recv_endpoint, CURLOPT_WRITEHEADER, ps);
1948 curl_easy_setopt(ps->recv_endpoint, CURLOPT_READFUNCTION, curl_send_cb);
1949 curl_easy_setopt(ps->recv_endpoint, CURLOPT_READDATA, ps);
1950 curl_easy_setopt(ps->recv_endpoint, CURLOPT_WRITEFUNCTION, curl_receive_cb);
1951 curl_easy_setopt(ps->recv_endpoint, CURLOPT_WRITEDATA, ps);
1952 curl_easy_setopt(ps->recv_endpoint, CURLOPT_TIMEOUT, (long) timeout.rel_value);
1953 curl_easy_setopt(ps->recv_endpoint, CURLOPT_PRIVATE, ps);
1954 curl_easy_setopt(ps->recv_endpoint, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT);
1955 curl_easy_setopt(ps->recv_endpoint, CURLOPT_BUFFERSIZE, 2*GNUNET_SERVER_MAX_MESSAGE_SIZE);
1956 #if CURL_TCP_NODELAY
1957 curl_easy_setopt(ps->recv_endpoint, CURLOPT_TCP_NODELAY, 1);
1960 if (fresh==GNUNET_YES)
1962 mret = curl_multi_add_handle(plugin->multi_handle, ps->recv_endpoint);
1963 if (mret != CURLM_OK)
1965 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1966 _("Connection: %X: %s failed at %s:%d: `%s'\n"),
1968 "curl_multi_add_handle", __FILE__, __LINE__,
1969 curl_multi_strerror (mret));
1970 return GNUNET_SYSERR;
1973 if (plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
1975 GNUNET_SCHEDULER_cancel(plugin->http_curl_task);
1976 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
1978 plugin->http_curl_task = GNUNET_SCHEDULER_add_now (&curl_perform, plugin);
1981 /* waiting for receive direction */
1982 if (ps->recv_connected==GNUNET_NO)
1985 /* SEND DIRECTION */
1986 /* Check if session is connected to send data, otherwise connect to peer */
1987 if ((ps->send_connected == GNUNET_YES) && (ps->send_endpoint!= NULL))
1989 if (ps->send_active == GNUNET_YES)
1991 #if DEBUG_CONNECTIONS
1992 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound active, enqueueing message\n",ps);
1996 if (ps->send_active == GNUNET_NO)
1998 #if DEBUG_CONNECTIONS
1999 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound paused, unpausing existing connection and enqueueing message\n",ps);
2001 if (CURLE_OK == curl_easy_pause(ps->send_endpoint,CURLPAUSE_CONT))
2003 ps->send_active=GNUNET_YES;
2004 if (plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
2006 GNUNET_SCHEDULER_cancel(plugin->http_curl_task);
2007 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
2009 plugin->http_curl_task = GNUNET_SCHEDULER_add_now (&curl_perform, plugin);
2013 return GNUNET_SYSERR;
2016 /* not connected, initiate connection */
2017 if (ps->send_connected==GNUNET_NO)
2019 int fresh = GNUNET_NO;
2020 if (NULL == ps->send_endpoint)
2022 ps->send_endpoint = curl_easy_init();
2025 GNUNET_assert (ps->send_endpoint != NULL);
2026 GNUNET_assert (NULL != ps->pending_msgs_tail);
2027 #if DEBUG_CONNECTIONS
2028 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound not connected, initiating connection\n",ps);
2030 ps->send_active = GNUNET_NO;
2031 msg = ps->pending_msgs_tail;
2034 curl_easy_setopt(ps->send_endpoint, CURLOPT_VERBOSE, 1L);
2035 curl_easy_setopt(ps->send_endpoint, CURLOPT_DEBUGFUNCTION , &curl_logger);
2036 curl_easy_setopt(ps->send_endpoint, CURLOPT_DEBUGDATA , ps->send_endpoint);
2039 curl_easy_setopt (ps->send_endpoint, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
2040 curl_easy_setopt(ps->send_endpoint, CURLOPT_SSL_VERIFYPEER, 0);
2041 curl_easy_setopt(ps->send_endpoint, CURLOPT_SSL_VERIFYHOST, 0);
2043 curl_easy_setopt(ps->send_endpoint, CURLOPT_URL, ps->url);
2044 curl_easy_setopt(ps->send_endpoint, CURLOPT_PUT, 1L);
2045 curl_easy_setopt(ps->send_endpoint, CURLOPT_HEADERFUNCTION, &curl_put_header_cb);
2046 curl_easy_setopt(ps->send_endpoint, CURLOPT_WRITEHEADER, ps);
2047 curl_easy_setopt(ps->send_endpoint, CURLOPT_READFUNCTION, curl_send_cb);
2048 curl_easy_setopt(ps->send_endpoint, CURLOPT_READDATA, ps);
2049 curl_easy_setopt(ps->send_endpoint, CURLOPT_WRITEFUNCTION, curl_receive_cb);
2050 curl_easy_setopt(ps->send_endpoint, CURLOPT_READDATA, ps);
2051 curl_easy_setopt(ps->send_endpoint, CURLOPT_TIMEOUT, (long) timeout.rel_value);
2052 curl_easy_setopt(ps->send_endpoint, CURLOPT_PRIVATE, ps);
2053 curl_easy_setopt(ps->send_endpoint, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT);
2054 curl_easy_setopt(ps->send_endpoint, CURLOPT_BUFFERSIZE, 2 * GNUNET_SERVER_MAX_MESSAGE_SIZE);
2055 #if CURL_TCP_NODELAY
2056 curl_easy_setopt(ps->send_endpoint, CURLOPT_TCP_NODELAY, 1);
2059 if (fresh==GNUNET_YES)
2061 mret = curl_multi_add_handle(plugin->multi_handle, ps->send_endpoint);
2062 if (mret != CURLM_OK)
2064 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2065 _("Connection: %X: %s failed at %s:%d: `%s'\n"),
2067 "curl_multi_add_handle", __FILE__, __LINE__,
2068 curl_multi_strerror (mret));
2069 return GNUNET_SYSERR;
2073 if (plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
2075 GNUNET_SCHEDULER_cancel(plugin->http_curl_task);
2076 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
2078 plugin->http_curl_task = GNUNET_SCHEDULER_add_now (&curl_perform, plugin);
2081 if (ps->direction == INBOUND)
2083 GNUNET_assert (NULL != ps->pending_msgs_tail);
2084 if ((ps->recv_connected==GNUNET_YES) && (ps->send_connected==GNUNET_YES) &&
2085 (ps->recv_force_disconnect==GNUNET_NO) && (ps->recv_force_disconnect==GNUNET_NO))
2088 return GNUNET_SYSERR;
2092 * select best session to transmit data to peer
2094 * @param pc peer context of target peer
2095 * @param addr address of target peer
2096 * @param addrlen address length
2097 * @param force_address does transport service enforce address?
2098 * @param session session passed by transport service
2099 * @return selected session
2102 static struct Session * send_select_session (struct HTTP_PeerContext *pc, const void * addr, size_t addrlen, int force_address, struct Session * session)
2104 struct Session * tmp = NULL;
2105 int addr_given = GNUNET_NO;
2107 if ((addr!=NULL) && (addrlen>0))
2108 addr_given = GNUNET_YES;
2110 if (force_address == GNUNET_YES)
2112 /* check session given as argument */
2113 if ((session != NULL) && (addr_given == GNUNET_YES))
2115 if (0 == memcmp(session->addr, addr, addrlen))
2117 /* connection can not be used, since it is disconnected */
2118 if ((session->recv_force_disconnect==GNUNET_NO) && (session->send_force_disconnect==GNUNET_NO))
2120 #if DEBUG_SESSION_SELECTION
2121 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using session passed by transport to send to forced address \n", session);
2127 /* check last session used */
2128 if ((pc->last_session != NULL)&& (addr_given == GNUNET_YES))
2130 if (0 == memcmp(pc->last_session->addr, addr, addrlen))
2132 /* connection can not be used, since it is disconnected */
2133 if ((pc->last_session->recv_force_disconnect==GNUNET_NO) && (pc->last_session->send_force_disconnect==GNUNET_NO))
2135 #if DEBUG_SESSION_SELECTION
2136 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using last session used to send to forced address \n", pc->last_session);
2138 return pc->last_session;
2142 /* find session in existing sessions */
2144 while ((tmp!=NULL) && (addr_given == GNUNET_YES))
2147 if (0 == memcmp(tmp->addr, addr, addrlen))
2149 /* connection can not be used, since it is disconnected */
2150 if ((tmp->recv_force_disconnect==GNUNET_NO) && (tmp->send_force_disconnect==GNUNET_NO))
2152 #if DEBUG_SESSION_SELECTION
2153 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using existing session to send to forced address \n", session);
2161 /* no session to use */
2164 if ((force_address == GNUNET_NO) || (force_address == GNUNET_SYSERR))
2166 /* check session given as argument */
2167 if (session != NULL)
2169 /* connection can not be used, since it is disconnected */
2170 if ((session->recv_force_disconnect==GNUNET_NO) && (session->send_force_disconnect==GNUNET_NO))
2172 #if DEBUG_SESSION_SELECTION
2173 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using session passed by transport to send not-forced address \n", session);
2179 /* check last session used */
2180 if (pc->last_session != NULL)
2182 /* connection can not be used, since it is disconnected */
2183 if ((pc->last_session->recv_force_disconnect==GNUNET_NO) && (pc->last_session->send_force_disconnect==GNUNET_NO))
2185 #if DEBUG_SESSION_SELECTION
2186 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using last session to send to not-forced address \n", pc->last_session);
2188 return pc->last_session;
2191 /* find session in existing sessions */
2195 /* connection can not be used, since it is disconnected */
2196 if ((tmp->recv_force_disconnect==GNUNET_NO) && (tmp->send_force_disconnect==GNUNET_NO))
2198 #if DEBUG_SESSION_SELECTION
2199 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using existing session to send to not-forced address \n", tmp);
2211 * Function that can be used by the transport service to transmit
2212 * a message using the plugin. Note that in the case of a
2213 * peer disconnecting, the continuation MUST be called
2214 * prior to the disconnect notification itself. This function
2215 * will be called with this peer's HELLO message to initiate
2216 * a fresh connection to another peer.
2218 * @param cls closure
2219 * @param target who should receive this message
2220 * @param msgbuf the message to transmit
2221 * @param msgbuf_size number of bytes in 'msgbuf'
2222 * @param priority how important is the message (most plugins will
2223 * ignore message priority and just FIFO)
2224 * @param to how long to wait at most for the transmission (does not
2225 * require plugins to discard the message after the timeout,
2226 * just advisory for the desired delay; most plugins will ignore
2228 * @param session which session must be used (or NULL for "any")
2229 * @param addr the address to use (can be NULL if the plugin
2230 * is "on its own" (i.e. re-use existing TCP connection))
2231 * @param addrlen length of the address in bytes
2232 * @param force_address GNUNET_YES if the plugin MUST use the given address,
2233 * GNUNET_NO means the plugin may use any other address and
2234 * GNUNET_SYSERR means that only reliable existing
2235 * bi-directional connections should be used (regardless
2237 * @param cont continuation to call once the message has
2238 * been transmitted (or if the transport is ready
2239 * for the next transmission call; or if the
2240 * peer disconnected...); can be NULL
2241 * @param cont_cls closure for cont
2242 * @return number of bytes used (on the physical network, with overheads);
2243 * -1 on hard errors (i.e. address invalid); 0 is a legal value
2244 * and does NOT mean that the message was not transmitted (DV)
2247 http_plugin_send (void *cls,
2248 const struct GNUNET_PeerIdentity *target,
2251 unsigned int priority,
2252 struct GNUNET_TIME_Relative to,
2253 struct Session *session,
2257 GNUNET_TRANSPORT_TransmitContinuation cont,
2260 struct Plugin *plugin = cls;
2261 struct HTTP_Message *msg;
2262 struct HTTP_PeerContext * pc;
2263 struct Session * ps = NULL;
2265 GNUNET_assert(cls !=NULL);
2269 if (force_address == GNUNET_YES)
2270 GNUNET_asprintf(&force, "forced addr.");
2271 if (force_address == GNUNET_NO)
2272 GNUNET_asprintf(&force, "any addr.");
2273 if (force_address == GNUNET_SYSERR)
2274 GNUNET_asprintf(&force,"reliable bi-direc. address addr.");
2276 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Transport tells me to send %u bytes to `%s' using %s (%s) and session: %X\n",
2280 http_plugin_address_to_string(NULL, addr, addrlen),
2286 pc = GNUNET_CONTAINER_multihashmap_get (plugin->peers, &target->hashPubKey);
2290 pc = GNUNET_malloc(sizeof (struct HTTP_PeerContext));
2291 pc->plugin = plugin;
2292 pc->session_id_counter=1;
2293 pc->last_session = NULL;
2294 memcpy(&pc->identity, target, sizeof(struct GNUNET_PeerIdentity));
2295 GNUNET_CONTAINER_multihashmap_put(plugin->peers, &pc->identity.hashPubKey, pc, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
2296 GNUNET_STATISTICS_update (plugin->env->stats,
2297 gettext_noop ("# HTTP peers active"),
2302 ps = send_select_session (pc, addr, addrlen, force_address, session);
2304 /* session not existing, but address forced -> creating new session */
2307 if ((addr!=NULL) && (addrlen!=0))
2309 ps = GNUNET_malloc(sizeof (struct Session));
2310 #if DEBUG_SESSION_SELECTION
2311 if (force_address == GNUNET_YES)
2312 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No existing connection & forced address: creating new session %X to peer %s\n", ps, GNUNET_i2s(target));
2313 if (force_address != GNUNET_YES)
2314 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No existing connection: creating new session %X to peer %s\n", ps, GNUNET_i2s(target));
2316 ps->addr = GNUNET_malloc(addrlen);
2317 memcpy(ps->addr,addr,addrlen);
2318 ps->addrlen = addrlen;
2325 ps->direction=OUTBOUND;
2326 ps->recv_connected = GNUNET_NO;
2327 ps->recv_force_disconnect = GNUNET_NO;
2328 ps->send_connected = GNUNET_NO;
2329 ps->send_force_disconnect = GNUNET_NO;
2330 ps->pending_msgs_head = NULL;
2331 ps->pending_msgs_tail = NULL;
2333 ps->session_id = pc->session_id_counter;
2334 ps->queue_length_cur = 0;
2335 ps->queue_length_max = GNUNET_SERVER_MAX_MESSAGE_SIZE;
2336 pc->session_id_counter++;
2337 ps->url = create_url (plugin, ps->addr, ps->addrlen, ps->session_id);
2338 if (ps->msgtok == NULL)
2339 ps->msgtok = GNUNET_SERVER_mst_create (&curl_receive_mst_cb, ps);
2340 GNUNET_CONTAINER_DLL_insert(pc->head,pc->tail,ps);
2341 GNUNET_STATISTICS_update (plugin->env->stats,
2342 gettext_noop ("# HTTP outbound sessions for peers active"),
2349 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));
2351 return GNUNET_SYSERR;
2355 if (msgbuf_size >= (ps->queue_length_max - ps->queue_length_cur))
2357 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Queue %X full: %u bytes in queue available, message with %u is too big\n", ps, (ps->queue_length_max - ps->queue_length_cur), msgbuf_size);
2358 //return GNUNET_SYSERR;
2362 msg = GNUNET_malloc (sizeof (struct HTTP_Message) + msgbuf_size);
2364 msg->size = msgbuf_size;
2366 msg->buf = (char *) &msg[1];
2367 msg->transmit_cont = cont;
2368 msg->transmit_cont_cls = cont_cls;
2369 memcpy (msg->buf,msgbuf, msgbuf_size);
2371 GNUNET_CONTAINER_DLL_insert(ps->pending_msgs_head,ps->pending_msgs_tail,msg);
2372 ps->queue_length_cur += msgbuf_size;
2374 if (send_check_connections (plugin, ps) == GNUNET_SYSERR)
2375 return GNUNET_SYSERR;
2376 if (force_address != GNUNET_YES)
2377 pc->last_session = ps;
2379 if (pc->last_session==NULL)
2380 pc->last_session = ps;
2387 * Function that can be used to force the plugin to disconnect
2388 * from the given peer and cancel all previous transmissions
2389 * (and their continuationc).
2391 * @param cls closure
2392 * @param target peer from which to disconnect
2395 http_plugin_disconnect (void *cls,
2396 const struct GNUNET_PeerIdentity *target)
2400 struct Plugin *plugin = cls;
2401 struct HTTP_PeerContext *pc = NULL;
2402 struct Session *ps = NULL;
2403 //struct Session *tmp = NULL;
2405 pc = GNUNET_CONTAINER_multihashmap_get (plugin->peers, &target->hashPubKey);
2412 /* Telling transport that session is getting disconnected */
2413 plugin->env->session_end(plugin, target, ps);
2414 if (ps->direction==OUTBOUND)
2416 if (ps->send_endpoint!=NULL)
2418 //GNUNET_assert(CURLM_OK == curl_multi_remove_handle(plugin->multi_handle,ps->send_endpoint));
2419 //curl_easy_cleanup(ps->send_endpoint);
2420 //ps->send_endpoint=NULL;
2421 ps->send_force_disconnect = GNUNET_YES;
2423 if (ps->recv_endpoint!=NULL)
2425 //GNUNET_assert(CURLM_OK == curl_multi_remove_handle(plugin->multi_handle,ps->recv_endpoint));
2426 //curl_easy_cleanup(ps->recv_endpoint);
2427 //ps->recv_endpoint=NULL;
2428 ps->recv_force_disconnect = GNUNET_YES;
2432 if (ps->direction==INBOUND)
2434 ps->recv_force_disconnect = GNUNET_YES;
2435 ps->send_force_disconnect = GNUNET_YES;
2438 while (ps->pending_msgs_head!=NULL)
2440 remove_http_message(ps, ps->pending_msgs_head);
2442 ps->recv_active = GNUNET_NO;
2443 ps->send_active = GNUNET_NO;
2450 * Convert the transports address to a nice, human-readable
2453 * @param cls closure
2454 * @param type name of the transport that generated the address
2455 * @param addr one of the addresses of the host, NULL for the last address
2456 * the specific address format depends on the transport
2457 * @param addrlen length of the address
2458 * @param numeric should (IP) addresses be displayed in numeric form?
2459 * @param timeout after how long should we give up?
2460 * @param asc function to call on each string
2461 * @param asc_cls closure for asc
2464 http_plugin_address_pretty_printer (void *cls,
2469 struct GNUNET_TIME_Relative timeout,
2470 GNUNET_TRANSPORT_AddressStringCallback
2473 const struct IPv4HttpAddress *t4;
2474 const struct IPv6HttpAddress *t6;
2475 struct sockaddr_in a4;
2476 struct sockaddr_in6 a6;
2482 GNUNET_assert(cls !=NULL);
2483 if (addrlen == sizeof (struct IPv6HttpAddress))
2485 address = GNUNET_malloc (INET6_ADDRSTRLEN);
2487 a6.sin6_addr = t6->ipv6_addr;
2488 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
2489 port = ntohs(t6->u6_port);
2491 else if (addrlen == sizeof (struct IPv4HttpAddress))
2493 address = GNUNET_malloc (INET_ADDRSTRLEN);
2495 a4.sin_addr.s_addr = t4->ipv4_addr;
2496 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
2497 port = ntohs(t4->u_port);
2501 /* invalid address */
2502 GNUNET_break_op (0);
2503 asc (asc_cls, NULL);
2506 res = GNUNET_asprintf(&ret,"%s://%s:%u/", PROTOCOL_PREFIX, address, port);
2507 GNUNET_free (address);
2508 GNUNET_assert(res != 0);
2510 GNUNET_free_non_null (ret);
2516 * Another peer has suggested an address for this
2517 * peer and transport plugin. Check that this could be a valid
2518 * address. If so, consider adding it to the list
2521 * @param cls closure
2522 * @param addr pointer to the address
2523 * @param addrlen length of addr
2524 * @return GNUNET_OK if this is a plausible address for this peer
2528 http_plugin_address_suggested (void *cls,
2529 const void *addr, size_t addrlen)
2531 struct Plugin *plugin = cls;
2532 struct IPv4HttpAddress *v4;
2533 struct IPv6HttpAddress *v6;
2535 struct IPv4HttpAddress *tv4 = plugin->ipv4_addr_head;
2536 struct IPv6HttpAddress *tv6 = plugin->ipv6_addr_head;
2538 GNUNET_assert(cls !=NULL);
2539 if ((addrlen != sizeof (struct IPv4HttpAddress)) &&
2540 (addrlen != sizeof (struct IPv6HttpAddress)))
2542 return GNUNET_SYSERR;
2544 if (addrlen == sizeof (struct IPv4HttpAddress))
2546 v4 = (struct IPv4HttpAddress *) addr;
2548 if (plugin->bind4_address!=NULL)
2550 if (0 == memcmp (&plugin->bind4_address->sin_addr, &v4->ipv4_addr, sizeof(uint32_t)))
2553 return GNUNET_SYSERR;
2557 if (0==memcmp (&tv4->ipv4_addr, &v4->ipv4_addr, sizeof(uint32_t)))
2564 return GNUNET_SYSERR;
2566 if (addrlen == sizeof (struct IPv6HttpAddress))
2568 v6 = (struct IPv6HttpAddress *) addr;
2570 if (plugin->bind6_address!=NULL)
2572 if (0 == memcmp (&plugin->bind6_address->sin6_addr, &v6->ipv6_addr, sizeof(struct in6_addr)))
2575 return GNUNET_SYSERR;
2580 if (0 == memcmp (&tv6->ipv6_addr, &v6->ipv6_addr, sizeof(struct in6_addr)))
2587 return GNUNET_SYSERR;
2590 return GNUNET_SYSERR;
2595 * Function called for a quick conversion of the binary address to
2596 * a numeric address. Note that the caller must not free the
2597 * address and that the next call to this function is allowed
2598 * to override the address again.
2600 * @param cls closure
2601 * @param addr binary address
2602 * @param addrlen length of the address
2603 * @return string representing the same address
2606 http_plugin_address_to_string (void *cls,
2610 const struct IPv4HttpAddress *t4;
2611 const struct IPv6HttpAddress *t6;
2612 struct sockaddr_in a4;
2613 struct sockaddr_in6 a6;
2619 if (addrlen == sizeof (struct IPv6HttpAddress))
2621 address = GNUNET_malloc (INET6_ADDRSTRLEN);
2623 a6.sin6_addr = t6->ipv6_addr;
2624 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
2625 port = ntohs(t6->u6_port);
2627 else if (addrlen == sizeof (struct IPv4HttpAddress))
2629 address = GNUNET_malloc (INET_ADDRSTRLEN);
2631 a4.sin_addr.s_addr = t4->ipv4_addr;
2632 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
2633 port = ntohs(t4->u_port);
2637 /* invalid address */
2640 res = GNUNET_asprintf(&ret,"%s:%u",address,port);
2641 GNUNET_free (address);
2642 GNUNET_assert(res != 0);
2648 * Exit point from the plugin.
2651 LIBGNUNET_PLUGIN_TRANSPORT_DONE (void *cls)
2653 struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
2654 struct Plugin *plugin = api->cls;
2656 struct IPv4HttpAddress * ipv4addr;
2657 struct IPv6HttpAddress * ipv6addr;
2658 GNUNET_assert(cls !=NULL);
2660 if (plugin->http_server_daemon_v4 != NULL)
2662 MHD_stop_daemon (plugin->http_server_daemon_v4);
2663 plugin->http_server_daemon_v4 = NULL;
2665 if (plugin->http_server_daemon_v6 != NULL)
2667 MHD_stop_daemon (plugin->http_server_daemon_v6);
2668 plugin->http_server_daemon_v6 = NULL;
2671 if ( plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
2673 GNUNET_SCHEDULER_cancel(plugin->http_server_task_v4);
2674 plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
2677 if ( plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
2679 GNUNET_SCHEDULER_cancel(plugin->http_server_task_v6);
2680 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
2683 while (plugin->ipv4_addr_head!=NULL)
2685 ipv4addr = plugin->ipv4_addr_head;
2686 GNUNET_CONTAINER_DLL_remove(plugin->ipv4_addr_head,plugin->ipv4_addr_tail,ipv4addr);
2687 GNUNET_free(ipv4addr);
2690 while (plugin->ipv6_addr_head!=NULL)
2692 ipv6addr = plugin->ipv6_addr_head;
2693 GNUNET_CONTAINER_DLL_remove(plugin->ipv6_addr_head,plugin->ipv6_addr_tail,ipv6addr);
2694 GNUNET_free(ipv6addr);
2697 /* free all peer information */
2698 if (plugin->peers!=NULL)
2700 GNUNET_CONTAINER_multihashmap_iterate (plugin->peers,
2701 &remove_peer_context_Iterator,
2703 GNUNET_CONTAINER_multihashmap_destroy (plugin->peers);
2705 if (plugin->multi_handle!=NULL)
2707 mret = curl_multi_cleanup(plugin->multi_handle);
2709 if ( CURLM_OK != mret)
2710 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"curl multihandle clean up failed\n");
2712 plugin->multi_handle = NULL;
2714 curl_global_cleanup();
2716 if ( plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
2718 GNUNET_SCHEDULER_cancel(plugin->http_curl_task);
2719 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
2722 GNUNET_free_non_null (plugin->bind4_address);
2723 GNUNET_free_non_null (plugin->bind6_address);
2724 GNUNET_free_non_null(plugin->bind_hostname);
2726 GNUNET_free_non_null (plugin->crypto_init);
2727 GNUNET_free_non_null (plugin->cert);
2728 GNUNET_free_non_null (plugin->key);
2730 GNUNET_free (plugin);
2733 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Unload %s plugin complete...\n", PROTOCOL_PREFIX);
2740 load_certificate( const char * file )
2742 struct GNUNET_DISK_FileHandle * gn_file;
2747 if (0!=STAT(file, &fstat))
2749 text = GNUNET_malloc (fstat.st_size+1);
2750 gn_file = GNUNET_DISK_file_open(file,GNUNET_DISK_OPEN_READ, GNUNET_DISK_PERM_USER_READ);
2756 if (GNUNET_SYSERR == GNUNET_DISK_file_read(gn_file, text, fstat.st_size))
2759 GNUNET_DISK_file_close(gn_file);
2762 text[fstat.st_size] = '\0';
2763 GNUNET_DISK_file_close(gn_file);
2771 * Entry point for the plugin.
2774 LIBGNUNET_PLUGIN_TRANSPORT_INIT (void *cls)
2776 struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
2777 struct Plugin *plugin;
2778 struct GNUNET_TRANSPORT_PluginFunctions *api;
2779 struct GNUNET_TIME_Relative gn_timeout;
2780 long long unsigned int port;
2781 char * component_name;
2783 char * key_file = NULL;
2784 char * cert_file = NULL;
2787 GNUNET_assert(cls !=NULL);
2789 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting %s plugin...\n", PROTOCOL_PREFIX);
2791 GNUNET_asprintf(&component_name,"transport-%s",PROTOCOL_PREFIX);
2793 plugin = GNUNET_malloc (sizeof (struct Plugin));
2794 plugin->stats = env->stats;
2796 plugin->peers = NULL;
2797 plugin->bind4_address = NULL;
2798 plugin->use_ipv6 = GNUNET_YES;
2799 plugin->use_ipv4 = GNUNET_YES;
2801 api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
2803 api->send = &http_plugin_send;
2804 api->disconnect = &http_plugin_disconnect;
2805 api->address_pretty_printer = &http_plugin_address_pretty_printer;
2806 api->check_address = &http_plugin_address_suggested;
2807 api->address_to_string = &http_plugin_address_to_string;
2809 /* Hashing our identity to use it in URLs */
2810 GNUNET_CRYPTO_hash_to_enc ( &(plugin->env->my_identity->hashPubKey), &plugin->my_ascii_hash_ident);
2813 if (GNUNET_CONFIGURATION_have_value (env->cfg,
2814 component_name, "USE_IPv6"))
2816 plugin->use_ipv6 = GNUNET_CONFIGURATION_get_value_yesno (env->cfg,
2821 if (GNUNET_CONFIGURATION_have_value (env->cfg,
2822 component_name, "USE_IPv4"))
2824 plugin->use_ipv4 = GNUNET_CONFIGURATION_get_value_yesno (env->cfg,
2825 component_name,"USE_IPv4");
2827 /* Reading port number from config file */
2829 GNUNET_CONFIGURATION_get_value_number (env->cfg,
2835 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
2837 _("Require valid port number for transport plugin `%s' in configuration!\n"),
2839 GNUNET_free(component_name);
2840 LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
2844 /* Reading ipv4 addresse to bind to from config file */
2845 if ((plugin->use_ipv4==GNUNET_YES) && (GNUNET_CONFIGURATION_have_value (env->cfg,
2846 component_name, "BINDTO4")))
2848 GNUNET_break (GNUNET_OK ==
2849 GNUNET_CONFIGURATION_get_value_string (env->cfg,
2852 &plugin->bind_hostname));
2853 plugin->bind4_address = GNUNET_malloc(sizeof(struct sockaddr_in));
2854 plugin->bind4_address->sin_family = AF_INET;
2855 plugin->bind4_address->sin_port = htons (port);
2857 if (plugin->bind_hostname!=NULL)
2859 if (inet_pton(AF_INET,plugin->bind_hostname, &plugin->bind4_address->sin_addr)<=0)
2861 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
2863 _("Misconfigured address to bind to in configuration!\n"));
2864 GNUNET_free(plugin->bind4_address);
2865 GNUNET_free(plugin->bind_hostname);
2866 plugin->bind_hostname = NULL;
2867 plugin->bind4_address = NULL;
2872 /* Reading ipv4 addresse to bind to from config file */
2873 if ((plugin->use_ipv6==GNUNET_YES) && (GNUNET_CONFIGURATION_have_value (env->cfg,
2874 component_name, "BINDTO6")))
2876 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (env->cfg,
2879 &plugin->bind_hostname))
2881 plugin->bind6_address = GNUNET_malloc(sizeof(struct sockaddr_in6));
2882 plugin->bind6_address->sin6_family = AF_INET6;
2883 plugin->bind6_address->sin6_port = htons (port);
2884 if (plugin->bind_hostname!=NULL)
2886 if (inet_pton(AF_INET6,plugin->bind_hostname, &plugin->bind6_address->sin6_addr)<=0)
2888 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
2890 _("Misconfigured address to bind to in configuration!\n"));
2891 GNUNET_free(plugin->bind6_address);
2892 GNUNET_free(plugin->bind_hostname);
2893 plugin->bind_hostname = NULL;
2894 plugin->bind6_address = NULL;
2901 /* Reading HTTPS crypto related configuration */
2902 /* Get crypto init string from config */
2903 if (GNUNET_CONFIGURATION_have_value (env->cfg,
2904 "transport-https", "CRYPTO_INIT"))
2906 GNUNET_CONFIGURATION_get_value_string (env->cfg,
2909 &plugin->crypto_init);
2913 GNUNET_asprintf(&plugin->crypto_init,"NORMAL");
2916 /* Get private key file from config */
2917 if (GNUNET_CONFIGURATION_have_value (env->cfg,
2918 "transport-https", "KEY_FILE"))
2920 GNUNET_CONFIGURATION_get_value_string (env->cfg,
2926 GNUNET_asprintf(&key_file,"https.key");
2928 /* Get private key file from config */
2929 if (GNUNET_CONFIGURATION_have_value (env->cfg,"transport-https", "CERT_FILE"))
2931 GNUNET_CONFIGURATION_get_value_string (env->cfg,
2936 if (cert_file==NULL)
2937 GNUNET_asprintf(&cert_file,"https.cert");
2939 /* read key & certificates from file */
2940 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Loading TLS certificate `%s' `%s'\n", key_file, cert_file);
2942 plugin->key = load_certificate( key_file );
2943 plugin->cert = load_certificate( cert_file );
2945 if ((plugin->key==NULL) || (plugin->cert==NULL))
2949 GNUNET_asprintf(&cmd,"gnunet-transport-certificate-creation %s %s", key_file, cert_file);
2950 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "No usable TLS certificate found, creating certificate \n");
2955 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
2957 _("Could not create a new TLS certificate, shell script `%s' failed!\n"),cmd,
2959 GNUNET_free (key_file);
2960 GNUNET_free (cert_file);
2961 GNUNET_free (component_name);
2963 LIBGNUNET_PLUGIN_TRANSPORT_DONE(api);
2970 plugin->key = load_certificate( key_file );
2971 plugin->cert = load_certificate( cert_file );
2973 if ((plugin->key==NULL) || (plugin->cert==NULL))
2975 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
2977 _("No usable TLS certificate found and creating one failed! \n"),
2979 GNUNET_free (key_file);
2980 GNUNET_free (cert_file);
2981 GNUNET_free (component_name);
2983 LIBGNUNET_PLUGIN_TRANSPORT_DONE(api);
2987 GNUNET_free (key_file);
2988 GNUNET_free (cert_file);
2990 GNUNET_assert((plugin->key!=NULL) && (plugin->cert!=NULL));
2991 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "TLS certificate loaded\n");
2994 GNUNET_assert ((port > 0) && (port <= 65535));
2995 plugin->port_inbound = port;
2996 gn_timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
2997 unsigned int timeout = (gn_timeout.rel_value) / 1000;
2998 if ((plugin->http_server_daemon_v6 == NULL) && (plugin->use_ipv6 == GNUNET_YES) && (port != 0))
3000 struct sockaddr * tmp = (struct sockaddr *) plugin->bind6_address;
3001 plugin->http_server_daemon_v6 = MHD_start_daemon (
3011 plugin , &mhd_access_cb, plugin,
3012 MHD_OPTION_SOCK_ADDR, tmp,
3013 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 32,
3014 //MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 6,
3016 MHD_OPTION_HTTPS_PRIORITIES, plugin->crypto_init,
3017 MHD_OPTION_HTTPS_MEM_KEY, plugin->key,
3018 MHD_OPTION_HTTPS_MEM_CERT, plugin->cert,
3020 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) timeout,
3021 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (2 * GNUNET_SERVER_MAX_MESSAGE_SIZE),
3022 MHD_OPTION_NOTIFY_COMPLETED, &mhd_termination_cb, NULL,
3023 MHD_OPTION_EXTERNAL_LOGGER, mhd_logger, plugin->mhd_log,
3026 if ((plugin->http_server_daemon_v4 == NULL) && (plugin->use_ipv4 == GNUNET_YES) && (port != 0))
3028 plugin->http_server_daemon_v4 = MHD_start_daemon (
3038 plugin , &mhd_access_cb, plugin,
3039 MHD_OPTION_SOCK_ADDR, (struct sockaddr_in *)plugin->bind4_address,
3040 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 32,
3041 //MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 6,
3043 MHD_OPTION_HTTPS_PRIORITIES, plugin->crypto_init,
3044 MHD_OPTION_HTTPS_MEM_KEY, plugin->key,
3045 MHD_OPTION_HTTPS_MEM_CERT, plugin->cert,
3047 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) timeout,
3048 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (2 * GNUNET_SERVER_MAX_MESSAGE_SIZE),
3049 MHD_OPTION_NOTIFY_COMPLETED, &mhd_termination_cb, NULL,
3050 MHD_OPTION_EXTERNAL_LOGGER, mhd_logger, plugin->mhd_log,
3053 if (plugin->http_server_daemon_v4 != NULL)
3054 plugin->http_server_task_v4 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
3055 if (plugin->http_server_daemon_v6 != NULL)
3056 plugin->http_server_task_v6 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
3059 if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
3062 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);
3065 else if ((plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK) && (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK))
3068 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);
3071 else if ((plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK) && (plugin->http_server_task_v4 == GNUNET_SCHEDULER_NO_TASK))
3074 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);
3080 if ((plugin->use_ipv6 == GNUNET_YES) && (plugin->use_ipv4 == GNUNET_YES))
3081 GNUNET_asprintf(&tmp,"with IPv4 and IPv6 enabled");
3082 if ((plugin->use_ipv6 == GNUNET_NO) && (plugin->use_ipv4 == GNUNET_YES))
3083 GNUNET_asprintf(&tmp,"with IPv4 enabled");
3084 if ((plugin->use_ipv6 == GNUNET_YES) && (plugin->use_ipv4 == GNUNET_NO))
3085 GNUNET_asprintf(&tmp,"with IPv6 enabled");
3086 if ((plugin->use_ipv6 == GNUNET_NO) && (plugin->use_ipv4 == GNUNET_NO))
3087 GNUNET_asprintf(&tmp,"with NO IP PROTOCOL enabled");
3088 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);
3090 GNUNET_free (component_name);
3091 LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
3095 /* Initializing cURL */
3096 curl_global_init(CURL_GLOBAL_ALL);
3097 plugin->multi_handle = curl_multi_init();
3099 if ( NULL == plugin->multi_handle )
3101 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
3103 _("Could not initialize curl multi handle, failed to start %s plugin!\n"),
3105 GNUNET_free(component_name);
3106 LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
3110 plugin->peers = GNUNET_CONTAINER_multihashmap_create (10);
3111 GNUNET_OS_network_interfaces_list (&process_interfaces, plugin);
3113 GNUNET_free(component_name);
3117 /* end of gnunet_transport_plugin.http.c */