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13 General Public License for more details.
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22 * @file transport/plugin_transport_http.c
23 * @brief http transport service plugin
24 * @author Matthias Wachs
27 #include "plugin_transport_http.h"
30 * After how long do we expire an address that we
31 * learned from another peer if it is not reconfirmed
34 #define LEARNED_ADDRESS_EXPIRATION GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 6)
37 * Wrapper to manage IPv4 addresses
39 struct IPv4HttpAddressWrapper
44 struct IPv4HttpAddressWrapper *next;
47 * Linked list previous
49 struct IPv4HttpAddressWrapper *prev;
51 struct IPv4HttpAddress addr;
55 * Wrapper for IPv4 addresses.
57 struct IPv6HttpAddressWrapper
62 struct IPv6HttpAddressWrapper *next;
65 * Linked list previous
67 struct IPv6HttpAddressWrapper *prev;
69 struct IPv6HttpAddress addr6;
74 * Context for address to string conversion.
76 struct PrettyPrinterContext
79 * Function to call with the result.
81 GNUNET_TRANSPORT_AddressStringCallback asc;
86 struct Plugin *plugin;
94 * Port to add after the IP address.
105 * Encapsulation of all of the state of the plugin.
110 * Start session timeout
113 start_session_timeout (struct Session *s);
116 * Increment session timeout due to activity
119 reschedule_session_timeout (struct Session *s);
125 stop_session_timeout (struct Session *s);
128 * Append our port and forward the result.
130 * @param cls the 'struct PrettyPrinterContext*'
131 * @param hostname hostname part of the address
134 append_port (void *cls, const char *hostname)
136 struct PrettyPrinterContext *ppc = cls;
137 static char rbuf[INET6_ADDRSTRLEN + 13];
139 if (hostname == NULL)
141 ppc->asc (ppc->asc_cls, NULL);
147 const char *protocol = "http";
149 const char *protocol = "https";
151 GNUNET_assert ((strlen (hostname) + 7) < (INET6_ADDRSTRLEN + 13));
152 if (ppc->addrlen == sizeof (struct IPv6HttpAddress))
154 if (ppc->numeric == GNUNET_YES)
155 GNUNET_snprintf (rbuf, sizeof (rbuf), "%s://[%s]:%u/", protocol, hostname, ppc->port);
158 if (strchr(hostname, ':') != NULL)
159 GNUNET_snprintf (rbuf, sizeof (rbuf), "%s://[%s]:%u/", protocol, hostname, ppc->port);
161 GNUNET_snprintf (rbuf, sizeof (rbuf), "%s://%s:%u/", protocol, hostname, ppc->port);
164 else if (ppc->addrlen == sizeof (struct IPv4HttpAddress))
165 GNUNET_snprintf (rbuf, sizeof (rbuf), "%s://%s:%u/", protocol, hostname, ppc->port);
166 ppc->asc (ppc->asc_cls, rbuf);
174 * Convert the transports address to a nice, human-readable
178 * @param type name of the transport that generated the address
179 * @param addr one of the addresses of the host, NULL for the last address
180 * the specific address format depends on the transport
181 * @param addrlen length of the address
182 * @param numeric should (IP) addresses be displayed in numeric form?
183 * @param timeout after how long should we give up?
184 * @param asc function to call on each string
185 * @param asc_cls closure for asc
188 http_plugin_address_pretty_printer (void *cls, const char *type,
189 const void *addr, size_t addrlen,
191 struct GNUNET_TIME_Relative timeout,
192 GNUNET_TRANSPORT_AddressStringCallback asc,
195 GNUNET_assert (cls != NULL);
196 struct PrettyPrinterContext *ppc;
198 struct sockaddr_in s4;
199 struct sockaddr_in6 s6;
203 if ((addrlen == sizeof (struct IPv6HttpAddress)) && (addr != NULL))
205 struct IPv6HttpAddress *a6 = (struct IPv6HttpAddress *) addr;
206 s6.sin6_family = AF_INET6;
207 s6.sin6_addr = a6->ipv6_addr;
208 s6.sin6_port = a6->u6_port;
209 #if HAVE_SOCKADDR_IN_SIN_LEN
210 s6.sin6_len = sizeof (struct sockaddr_in6);
213 sbs = sizeof (struct sockaddr_in6);
214 port = ntohs (a6->u6_port);
217 else if ((addrlen == sizeof (struct IPv4HttpAddress)) && (addr != NULL))
219 struct IPv4HttpAddress *a4 = (struct IPv4HttpAddress *) addr;
221 s4.sin_family = AF_INET;
222 s4.sin_addr.s_addr = a4->ipv4_addr;
223 s4.sin_port = a4->u4_port;
224 #if HAVE_SOCKADDR_IN_SIN_LEN
225 s4.sin_len = sizeof (struct sockaddr_in);
228 sbs = sizeof (struct sockaddr_in);
229 port = ntohs (a4->u4_port);
231 else if (0 == addrlen)
233 asc (asc_cls, "<inbound connection>");
239 /* invalid address */
244 ppc = GNUNET_malloc (sizeof (struct PrettyPrinterContext));
246 ppc->asc_cls = asc_cls;
249 ppc->addrlen = addrlen;
250 ppc->numeric = numeric;
251 GNUNET_RESOLVER_hostname_get (sb, sbs, !numeric, timeout, &append_port, ppc);
257 * Another peer has suggested an address for this
258 * peer and transport plugin. Check that this could be a valid
259 * address. If so, consider adding it to the list
263 * @param addr pointer to the address
264 * @param addrlen length of addr
265 * @return GNUNET_OK if this is a plausible address for this peer
269 http_plugin_address_suggested (void *cls, const void *addr, size_t addrlen)
271 struct Plugin *plugin = cls;
272 struct IPv4HttpAddressWrapper *w_tv4 = plugin->ipv4_addr_head;
273 struct IPv6HttpAddressWrapper *w_tv6 = plugin->ipv6_addr_head;
275 GNUNET_assert (cls != NULL);
276 if ((addrlen != sizeof (struct sockaddr_in)) ||
277 (addrlen != sizeof (struct sockaddr_in6)))
278 return GNUNET_SYSERR;
280 if (addrlen == sizeof (struct IPv4HttpAddress))
282 struct IPv4HttpAddress *a4 = (struct IPv4HttpAddress *) addr;
284 while (w_tv4 != NULL)
287 memcmp (&w_tv4->addr.ipv4_addr, &a4->ipv4_addr,
288 sizeof (struct in_addr))) &&
289 (w_tv4->addr.u4_port == a4->u4_port))
296 return GNUNET_SYSERR;
298 if (addrlen == sizeof (struct sockaddr_in6))
300 struct IPv6HttpAddress *a6 = (struct IPv6HttpAddress *) addr;
302 while (w_tv6 != NULL)
305 memcmp (&w_tv6->addr6.ipv6_addr, &a6->ipv6_addr,
306 sizeof (struct in6_addr))) &&
307 (w_tv6->addr6.u6_port == a6->u6_port))
314 return GNUNET_SYSERR;
319 struct GNUNET_TIME_Relative
320 http_plugin_receive (void *cls, const struct GNUNET_PeerIdentity *peer,
321 const struct GNUNET_MessageHeader *message,
322 struct Session *session, const char *sender_address,
323 uint16_t sender_address_len)
325 struct Session *s = cls;
326 struct Plugin *plugin = s->plugin;
327 struct GNUNET_TIME_Relative delay;
328 struct GNUNET_ATS_Information atsi[2];
330 atsi[0].type = htonl (GNUNET_ATS_QUALITY_NET_DISTANCE);
331 atsi[0].value = htonl (1);
332 atsi[1].type = htonl (GNUNET_ATS_NETWORK_TYPE);
333 atsi[1].value = session->ats_address_network_type;
334 GNUNET_break (session->ats_address_network_type != ntohl (GNUNET_ATS_NET_UNSPECIFIED));
336 reschedule_session_timeout (session);
339 plugin->env->receive (plugin->env->cls, &s->target, message,
340 (const struct GNUNET_ATS_Information *) &atsi,
341 2, s, s->addr, s->addrlen);
347 * Function called to convert a string address to
350 * @param cls closure ('struct Plugin*')
351 * @param addr string address
352 * @param addrlen length of the address
353 * @param buf location to store the buffer
354 * If the function returns GNUNET_SYSERR, its contents are undefined.
355 * @param added length of created address
356 * @return GNUNET_OK on success, GNUNET_SYSERR on failure
359 http_string_to_address (void *cls,
366 char *protocol = "http";
368 char *protocol = "https";
370 char *addr_str = NULL;
371 struct sockaddr_in addr_4;
372 struct sockaddr_in6 addr_6;
373 struct IPv4HttpAddress * http_4addr;
374 struct IPv6HttpAddress * http_6addr;
376 if ((NULL == addr) || (addrlen == 0))
379 return GNUNET_SYSERR;
382 if ('\0' != addr[addrlen - 1])
385 return GNUNET_SYSERR;
388 if (strlen (addr) != addrlen - 1)
391 return GNUNET_SYSERR;
394 /* protocoll + "://" + ":" */
395 if (addrlen <= (strlen (protocol) + 4))
397 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
398 "Invalid address string `%s' to convert to address\n",
401 return GNUNET_SYSERR;
404 if (NULL == (addr_str = strstr(addr, "://")))
406 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
407 "Invalid address string `%s' to convert to address\n",
410 return GNUNET_SYSERR;
412 addr_str = &addr_str[3];
414 if (addr_str[strlen(addr_str)-1] == '/')
415 addr_str[strlen(addr_str)-1] = '\0';
417 if (GNUNET_OK == GNUNET_STRINGS_to_address_ipv4(addr_str, strlen(addr_str), &addr_4))
419 http_4addr = GNUNET_malloc (sizeof (struct IPv4HttpAddress));
420 http_4addr->u4_port = addr_4.sin_port;
421 http_4addr->ipv4_addr = (uint32_t) addr_4.sin_addr.s_addr;
423 (*added) = sizeof (struct IPv4HttpAddress);
426 if (GNUNET_OK == GNUNET_STRINGS_to_address_ipv6(addr_str, strlen(addr_str), &addr_6))
428 http_6addr = GNUNET_malloc (sizeof (struct IPv6HttpAddress));
429 http_6addr->u6_port = addr_6.sin6_port;
430 http_6addr->ipv6_addr = addr_6.sin6_addr;
432 (*added) = sizeof (struct IPv6HttpAddress);
435 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
436 "Invalid address string `%s' to convert to address\n",
439 return GNUNET_SYSERR;
444 * Function called for a quick conversion of the binary address to
445 * a numeric address. Note that the caller must not free the
446 * address and that the next call to this function is allowed
447 * to override the address again.
450 * @param addr binary address
451 * @param addrlen length of the address
452 * @return string representing the same address
455 http_plugin_address_to_string (void *cls, const void *addr, size_t addrlen)
458 struct IPv4HttpAddress *a4;
459 struct IPv6HttpAddress *a6;
461 static char rbuf[INET6_ADDRSTRLEN + 13];
465 if (addrlen == sizeof (struct IPv6HttpAddress))
467 a6 = (struct IPv6HttpAddress *) addr;
468 address = GNUNET_malloc (INET6_ADDRSTRLEN);
469 GNUNET_assert (NULL !=
470 inet_ntop (AF_INET6, &a6->ipv6_addr, address,
472 port = ntohs (a6->u6_port);
474 else if (addrlen == sizeof (struct IPv4HttpAddress))
476 a4 = (struct IPv4HttpAddress *) addr;
477 address = GNUNET_malloc (INET_ADDRSTRLEN);
478 GNUNET_assert (NULL !=
479 inet_ntop (AF_INET, &(a4->ipv4_addr), address,
481 port = ntohs (a4->u4_port);
485 /* invalid address */
490 char *protocol = "http";
492 char *protocol = "https";
495 GNUNET_assert (strlen (address) + 7 < (INET6_ADDRSTRLEN + 13));
496 if (addrlen == sizeof (struct IPv6HttpAddress))
498 GNUNET_snprintf (rbuf, sizeof (rbuf), "%s://[%s]:%u/", protocol,
500 else if (addrlen == sizeof (struct IPv4HttpAddress))
502 GNUNET_snprintf (rbuf, sizeof (rbuf), "%s://%s:%u/", protocol, address,
505 GNUNET_free (address);
506 GNUNET_assert (res != 0);
512 lookup_session_old (struct Plugin *plugin, const struct GNUNET_PeerIdentity *target,
513 struct Session *session, const void *addr, size_t addrlen,
520 for (t = plugin->head; NULL != t; t = t->next)
523 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
524 "Comparing peer `%s' address `%s' len %i session %p to \n",
525 GNUNET_i2s (target), GNUNET_a2s (addr, addrlen), addrlen,
527 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
528 "peer `%s' address `%s' len %i session %p \n\n",
529 GNUNET_i2s (&t->target), GNUNET_a2s (t->addr, t->addrlen),
531 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name, "memcmp %i \n",
532 memcmp (addr, t->addr, addrlen));
536 if (0 == memcmp (target, &t->target, sizeof (struct GNUNET_PeerIdentity)))
539 if ( (addrlen == t->addrlen) &&
540 (0 == memcmp (addr, t->addr, addrlen)) )
542 if ( (t == session) &&
543 (t->addrlen == session->addrlen) &&
544 (0 == memcmp (session->addr, t->addr, t->addrlen)) )
548 if ( ((e_peer == GNUNET_YES) && (force_address == GNUNET_NO)) ||
549 ((e_peer == GNUNET_YES) && (force_address == GNUNET_YES) && (e_addr == GNUNET_YES)) ||
550 ((e_peer == GNUNET_YES) && (force_address == GNUNET_SYSERR)) )
558 lookup_session (struct Plugin *plugin,
559 const struct GNUNET_HELLO_Address *address)
563 for (pos = plugin->head; NULL != pos; pos = pos->next)
564 if ( (0 == memcmp (&address->peer, &pos->target, sizeof (struct GNUNET_PeerIdentity))) &&
565 (address->address_length == pos->addrlen) &&
566 (0 == memcmp (address->address, pos->addr, pos->addrlen)) )
573 exist_session (struct Plugin *plugin, struct Session *s)
575 struct Session * head;
577 GNUNET_assert (NULL != plugin);
578 GNUNET_assert (NULL != s);
580 for (head = plugin->head; head != NULL; head = head->next)
590 delete_session (struct Session *s)
592 stop_session_timeout(s);
594 if (s->msg_tk != NULL)
596 GNUNET_SERVER_mst_destroy (s->msg_tk);
599 GNUNET_free (s->addr);
600 GNUNET_free_non_null (s->server_recv);
601 GNUNET_free_non_null (s->server_send);
607 create_session (struct Plugin *plugin, const struct GNUNET_PeerIdentity *target,
608 const void *addr, size_t addrlen)
610 struct Session *s = NULL;
611 struct GNUNET_ATS_Information ats;
613 GNUNET_assert ((addrlen == sizeof (struct IPv6HttpAddress)) ||
614 (addrlen == sizeof (struct IPv4HttpAddress)));
619 if (addrlen == sizeof (struct IPv4HttpAddress))
621 struct IPv4HttpAddress *a4 = (struct IPv4HttpAddress *) addr;
622 struct sockaddr_in s4;
624 if (0 == ntohs(a4->u4_port))
627 s4.sin_family = AF_INET;
628 s4.sin_addr.s_addr = a4->ipv4_addr;
629 s4.sin_port = a4->u4_port;
630 #if HAVE_SOCKADDR_IN_SIN_LEN
631 s4.sin_len = sizeof (struct sockaddr_in);
633 ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) &s4, sizeof (struct sockaddr_in));
635 if (addrlen == sizeof (struct IPv6HttpAddress))
637 struct IPv6HttpAddress *a6 = (struct IPv6HttpAddress *) addr;
638 struct sockaddr_in6 s6;
640 if (0 == ntohs(a6->u6_port))
643 s6.sin6_family = AF_INET6;
644 s6.sin6_addr = a6->ipv6_addr;
645 s6.sin6_port = a6->u6_port;
646 #if HAVE_SOCKADDR_IN_SIN_LEN
647 s6.sin6_len = sizeof (struct sockaddr_in6);
649 ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) &s6, sizeof (struct sockaddr_in6));
652 s = GNUNET_malloc (sizeof (struct Session));
653 memcpy (&s->target, target, sizeof (struct GNUNET_PeerIdentity));
655 s->addr = GNUNET_malloc (addrlen);
656 memcpy (s->addr, addr, addrlen);
657 s->addrlen = addrlen;
658 s->ats_address_network_type = ats.value;
661 start_session_timeout(s);
667 notify_session_end (void *cls, const struct GNUNET_PeerIdentity *peer,
670 struct Plugin *plugin = cls;
672 plugin->env->session_end (plugin->env->cls, peer, s);
673 GNUNET_CONTAINER_DLL_remove (plugin->head, plugin->tail, s);
679 * Creates a new outbound session the transport service will use to send data to the
682 * @param cls the plugin
683 * @param address the address
684 * @return the session or NULL of max connections exceeded
686 static struct Session *
687 http_get_session (void *cls,
688 const struct GNUNET_HELLO_Address *address)
690 struct Plugin *plugin = cls;
691 struct Session * s = NULL;
694 GNUNET_assert (plugin != NULL);
695 GNUNET_assert (address != NULL);
696 GNUNET_assert (address->address != NULL);
698 /* find existing session */
699 s = lookup_session (plugin, address);
703 if (plugin->max_connections <= plugin->cur_connections)
705 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
706 "Maximum number of connections reached, "
707 "cannot connect to peer `%s'\n", GNUNET_i2s (&address->peer));
711 /* create new session */
712 addrlen = address->address_length;
714 GNUNET_assert ((addrlen == sizeof (struct IPv6HttpAddress)) ||
715 (addrlen == sizeof (struct IPv4HttpAddress)));
717 s = create_session (plugin, &address->peer, address->address, address->address_length);
719 /* add new session */
720 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
721 /* initiate new connection */
722 if (GNUNET_SYSERR == client_connect (s))
724 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
725 "Cannot connect to peer `%s' address `%s''\n",
726 http_plugin_address_to_string(NULL, s->addr, s->addrlen),
727 GNUNET_i2s (&s->target));
728 GNUNET_CONTAINER_DLL_remove (plugin->head, plugin->tail, s);
738 * Function that can be used by the transport service to transmit
739 * a message using the plugin. Note that in the case of a
740 * peer disconnecting, the continuation MUST be called
741 * prior to the disconnect notification itself. This function
742 * will be called with this peer's HELLO message to initiate
743 * a fresh connection to another peer.
746 * @param session which session must be used
747 * @param msgbuf the message to transmit
748 * @param msgbuf_size number of bytes in 'msgbuf'
749 * @param priority how important is the message (most plugins will
750 * ignore message priority and just FIFO)
751 * @param to how long to wait at most for the transmission (does not
752 * require plugins to discard the message after the timeout,
753 * just advisory for the desired delay; most plugins will ignore
755 * @param cont continuation to call once the message has
756 * been transmitted (or if the transport is ready
757 * for the next transmission call; or if the
758 * peer disconnected...); can be NULL
759 * @param cont_cls closure for cont
760 * @return number of bytes used (on the physical network, with overheads);
761 * -1 on hard errors (i.e. address invalid); 0 is a legal value
762 * and does NOT mean that the message was not transmitted (DV)
765 http_plugin_send (void *cls,
766 struct Session *session,
767 const char *msgbuf, size_t msgbuf_size,
768 unsigned int priority,
769 struct GNUNET_TIME_Relative to,
770 GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
772 struct Plugin *plugin = cls;
773 struct HTTP_Message *msg;
777 GNUNET_assert (plugin != NULL);
778 GNUNET_assert (session != NULL);
780 /* lookup if session is really existing */
784 if ((tmp == session) &&
785 (0 == memcmp (&session->target, &tmp->target, sizeof (struct GNUNET_PeerIdentity))) &&
786 (session->addrlen == tmp->addrlen) &&
787 (0 == memcmp (session->addr, tmp->addr, tmp->addrlen)))
797 /* create new message and schedule */
798 msg = GNUNET_malloc (sizeof (struct HTTP_Message) + msgbuf_size);
800 msg->size = msgbuf_size;
802 msg->buf = (char *) &msg[1];
803 msg->transmit_cont = cont;
804 msg->transmit_cont_cls = cont_cls;
805 memcpy (msg->buf, msgbuf, msgbuf_size);
807 reschedule_session_timeout (session);
809 if (session->inbound == GNUNET_NO)
811 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
812 "Using outbound client session %p to send to `%s'\n", session,
813 GNUNET_i2s (&session->target));
814 client_send (session, msg);
817 if (session->inbound == GNUNET_YES)
819 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
820 "Using inbound server %p session to send to `%s'\n", session,
821 GNUNET_i2s (&session->target));
822 server_send (session, msg);
831 * Function that can be used to force the plugin to disconnect
832 * from the given peer and cancel all previous transmissions
833 * (and their continuationc).
836 * @param target peer from which to disconnect
839 http_plugin_disconnect (void *cls, const struct GNUNET_PeerIdentity *target)
841 struct Plugin *plugin = cls;
842 struct Session *next = NULL;
843 struct Session *s = plugin->head;
845 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
846 "Transport tells me to disconnect `%s'\n",
847 GNUNET_i2s (target));
851 if (0 == memcmp (target, &s->target, sizeof (struct GNUNET_PeerIdentity)))
853 if (s->inbound == GNUNET_NO)
854 GNUNET_assert (GNUNET_OK == client_disconnect (s));
856 GNUNET_assert (GNUNET_OK == server_disconnect (s));
857 GNUNET_CONTAINER_DLL_remove (plugin->head, plugin->tail, s);
859 struct HTTP_Message *msg = s->msg_head;
860 struct HTTP_Message *tmp = NULL;
866 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
867 if (msg->transmit_cont != NULL)
869 msg->transmit_cont (msg->transmit_cont_cls, target, GNUNET_SYSERR);
883 find_address (struct Plugin *plugin, const struct sockaddr *addr, socklen_t addrlen)
886 struct IPv4HttpAddressWrapper *w_t4 = NULL;
887 struct IPv6HttpAddressWrapper *w_t6 = NULL;
889 af = addr->sa_family;
893 w_t4 = plugin->ipv4_addr_head;
894 struct sockaddr_in *a4 = (struct sockaddr_in *) addr;
898 int res = memcmp (&w_t4->addr.ipv4_addr,
900 sizeof (struct in_addr));
904 if (a4->sin_port != w_t4->addr.u4_port)
915 w_t6 = plugin->ipv6_addr_head;
916 struct sockaddr_in6 *a6 = (struct sockaddr_in6 *) addr;
920 int res = memcmp (&w_t6->addr6.ipv6_addr, &a6->sin6_addr,
921 sizeof (struct in6_addr));
925 if (a6->sin6_port != w_t6->addr6.u6_port)
942 nat_add_address (void *cls, int add_remove, const struct sockaddr *addr,
945 struct Plugin *plugin = cls;
946 struct IPv4HttpAddressWrapper *w_t4 = NULL;
947 struct IPv6HttpAddressWrapper *w_t6 = NULL;
950 af = addr->sa_family;
954 w_t4 = find_address (plugin, addr, addrlen);
957 struct sockaddr_in *a4 = (struct sockaddr_in *) addr;
958 w_t4 = GNUNET_malloc (sizeof (struct IPv4HttpAddressWrapper));
959 memcpy (&w_t4->addr.ipv4_addr, &a4->sin_addr, sizeof (struct in_addr));
960 w_t4->addr.u4_port = a4->sin_port;
962 GNUNET_CONTAINER_DLL_insert (plugin->ipv4_addr_head,
963 plugin->ipv4_addr_tail, w_t4);
965 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
966 "Notifying transport to add IPv4 address `%s'\n",
967 http_plugin_address_to_string (NULL, &w_t4->addr,
970 plugin->env->notify_address (plugin->env->cls, add_remove, &w_t4->addr,
971 sizeof (struct IPv4HttpAddress));
975 w_t6 = find_address (plugin, addr, addrlen);
978 w_t6 = GNUNET_malloc (sizeof (struct IPv6HttpAddressWrapper));
979 struct sockaddr_in6 *a6 = (struct sockaddr_in6 *) addr;
980 memcpy (&w_t6->addr6.ipv6_addr, &a6->sin6_addr, sizeof (struct in6_addr));
981 w_t6->addr6.u6_port = a6->sin6_port;
983 GNUNET_CONTAINER_DLL_insert (plugin->ipv6_addr_head,
984 plugin->ipv6_addr_tail, w_t6);
986 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
987 "Notifying transport to add IPv6 address `%s'\n",
988 http_plugin_address_to_string (NULL, &w_t6->addr6,
991 plugin->env->notify_address (plugin->env->cls, add_remove, &w_t6->addr6,
992 sizeof (struct IPv6HttpAddress));
1003 nat_remove_address (void *cls, int add_remove, const struct sockaddr *addr,
1006 struct Plugin *plugin = cls;
1007 struct IPv4HttpAddressWrapper *w_t4 = NULL;
1008 struct IPv6HttpAddressWrapper *w_t6 = NULL;
1011 af = addr->sa_family;
1015 w_t4 = find_address (plugin, addr, addrlen);
1020 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1021 "Notifying transport to remove IPv4 address `%s'\n",
1022 http_plugin_address_to_string (NULL, &w_t4->addr,
1025 plugin->env->notify_address (plugin->env->cls, add_remove, &w_t4->addr,
1026 sizeof (struct IPv4HttpAddress));
1028 GNUNET_CONTAINER_DLL_remove (plugin->ipv4_addr_head, plugin->ipv4_addr_tail,
1033 w_t6 = find_address (plugin, addr, addrlen);
1037 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1038 "Notifying transport to remove IPv6 address `%s'\n",
1039 http_plugin_address_to_string (NULL, &w_t6->addr6,
1043 plugin->env->notify_address (plugin->env->cls, add_remove, &w_t6->addr6,
1044 sizeof (struct IPv6HttpAddress));
1046 GNUNET_CONTAINER_DLL_remove (plugin->ipv6_addr_head, plugin->ipv6_addr_tail,
1057 * Our external IP address/port mapping has changed.
1059 * @param cls closure, the 'struct LocalAddrList'
1060 * @param add_remove GNUNET_YES to mean the new public IP address, GNUNET_NO to mean
1061 * the previous (now invalid) one
1062 * @param addr either the previous or the new public IP address
1063 * @param addrlen actual lenght of the address
1066 nat_port_map_callback (void *cls, int add_remove, const struct sockaddr *addr,
1069 GNUNET_assert (cls != NULL);
1070 struct Plugin *plugin = cls;
1072 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1073 "NPMC called %s to address `%s'\n",
1074 (add_remove == GNUNET_NO) ? "remove" : "add",
1075 GNUNET_a2s (addr, addrlen));
1080 nat_add_address (cls, add_remove, addr, addrlen);
1083 nat_remove_address (cls, add_remove, addr, addrlen);
1090 http_check_ipv6 (struct Plugin *plugin)
1092 struct GNUNET_NETWORK_Handle *desc = NULL;
1094 if (plugin->ipv6 == GNUNET_YES)
1096 /* probe IPv6 support */
1097 desc = GNUNET_NETWORK_socket_create (PF_INET6, SOCK_STREAM, 0);
1100 if ((errno == ENOBUFS) || (errno == ENOMEM) || (errno == ENFILE) ||
1103 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "socket");
1105 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
1107 ("Disabling IPv6 since it is not supported on this system!\n"));
1108 plugin->ipv6 = GNUNET_NO;
1112 GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (desc));
1116 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1117 "Testing IPv6 on this system: %s\n",
1118 (plugin->ipv6 == GNUNET_YES) ? "successful" : "failed");
1124 http_get_addresses (struct Plugin *plugin, const char *serviceName,
1125 const struct GNUNET_CONFIGURATION_Handle *cfg,
1126 struct sockaddr ***addrs, socklen_t ** addr_lens)
1129 unsigned long long port;
1130 struct addrinfo hints;
1131 struct addrinfo *res;
1132 struct addrinfo *pos;
1133 struct addrinfo *next;
1137 struct sockaddr **saddrs;
1138 socklen_t *saddrlens;
1144 disablev6 = !plugin->ipv6;
1147 if (GNUNET_CONFIGURATION_have_value (cfg, serviceName, "PORT"))
1149 GNUNET_break (GNUNET_OK ==
1150 GNUNET_CONFIGURATION_get_value_number (cfg, serviceName,
1154 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1156 ("Require valid port number for service in configuration!\n"));
1157 return GNUNET_SYSERR;
1162 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
1163 "Starting in listen only mode\n");
1164 return -1; /* listen only */
1168 if (GNUNET_CONFIGURATION_have_value (cfg, serviceName, "BINDTO"))
1170 GNUNET_break (GNUNET_OK ==
1171 GNUNET_CONFIGURATION_get_value_string (cfg, serviceName,
1172 "BINDTO", &hostname));
1177 if (hostname != NULL)
1179 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1180 "Resolving `%s' since that is where `%s' will bind to.\n",
1181 hostname, serviceName);
1182 memset (&hints, 0, sizeof (struct addrinfo));
1184 hints.ai_family = AF_INET;
1185 if ((0 != (ret = getaddrinfo (hostname, NULL, &hints, &res))) ||
1188 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Failed to resolve `%s': %s\n"),
1189 hostname, gai_strerror (ret));
1190 GNUNET_free (hostname);
1191 return GNUNET_SYSERR;
1195 while (NULL != (pos = next))
1197 next = pos->ai_next;
1198 if ((disablev6) && (pos->ai_family == AF_INET6))
1204 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1205 _("Failed to find %saddress for `%s'.\n"),
1206 disablev6 ? "IPv4 " : "", hostname);
1208 GNUNET_free (hostname);
1209 return GNUNET_SYSERR;
1212 saddrs = GNUNET_malloc ((resi + 1) * sizeof (struct sockaddr *));
1213 saddrlens = GNUNET_malloc ((resi + 1) * sizeof (socklen_t));
1216 while (NULL != (pos = next))
1218 next = pos->ai_next;
1219 if ((disablev6) && (pos->ai_family == AF_INET6))
1221 if ((pos->ai_protocol != IPPROTO_TCP) && (pos->ai_protocol != 0))
1222 continue; /* not TCP */
1223 if ((pos->ai_socktype != SOCK_STREAM) && (pos->ai_socktype != 0))
1224 continue; /* huh? */
1225 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1226 "Service will bind to `%s'\n", GNUNET_a2s (pos->ai_addr,
1228 if (pos->ai_family == AF_INET)
1230 GNUNET_assert (pos->ai_addrlen == sizeof (struct sockaddr_in));
1231 saddrlens[i] = pos->ai_addrlen;
1232 saddrs[i] = GNUNET_malloc (saddrlens[i]);
1233 memcpy (saddrs[i], pos->ai_addr, saddrlens[i]);
1234 ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
1238 GNUNET_assert (pos->ai_family == AF_INET6);
1239 GNUNET_assert (pos->ai_addrlen == sizeof (struct sockaddr_in6));
1240 saddrlens[i] = pos->ai_addrlen;
1241 saddrs[i] = GNUNET_malloc (saddrlens[i]);
1242 memcpy (saddrs[i], pos->ai_addr, saddrlens[i]);
1243 ((struct sockaddr_in6 *) saddrs[i])->sin6_port = htons (port);
1247 GNUNET_free (hostname);
1253 /* will bind against everything, just set port */
1259 saddrs = GNUNET_malloc ((resi + 1) * sizeof (struct sockaddr *));
1260 saddrlens = GNUNET_malloc ((resi + 1) * sizeof (socklen_t));
1262 saddrlens[i] = sizeof (struct sockaddr_in);
1263 saddrs[i] = GNUNET_malloc (saddrlens[i]);
1264 #if HAVE_SOCKADDR_IN_SIN_LEN
1265 ((struct sockaddr_in *) saddrs[i])->sin_len = saddrlens[i];
1267 ((struct sockaddr_in *) saddrs[i])->sin_family = AF_INET;
1268 ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
1274 saddrs = GNUNET_malloc ((resi + 1) * sizeof (struct sockaddr *));
1275 saddrlens = GNUNET_malloc ((resi + 1) * sizeof (socklen_t));
1277 saddrlens[i] = sizeof (struct sockaddr_in6);
1278 saddrs[i] = GNUNET_malloc (saddrlens[i]);
1279 #if HAVE_SOCKADDR_IN_SIN_LEN
1280 ((struct sockaddr_in6 *) saddrs[i])->sin6_len = saddrlens[0];
1282 ((struct sockaddr_in6 *) saddrs[i])->sin6_family = AF_INET6;
1283 ((struct sockaddr_in6 *) saddrs[i])->sin6_port = htons (port);
1285 saddrlens[i] = sizeof (struct sockaddr_in);
1286 saddrs[i] = GNUNET_malloc (saddrlens[i]);
1287 #if HAVE_SOCKADDR_IN_SIN_LEN
1288 ((struct sockaddr_in *) saddrs[i])->sin_len = saddrlens[1];
1290 ((struct sockaddr_in *) saddrs[i])->sin_family = AF_INET;
1291 ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
1295 *addr_lens = saddrlens;
1300 start_report_addresses (struct Plugin *plugin)
1302 int res = GNUNET_OK;
1303 struct sockaddr **addrs;
1304 socklen_t *addrlens;
1307 http_get_addresses (plugin, plugin->name, plugin->env->cfg, &addrs,
1309 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1310 _("Found %u addresses to report to NAT service\n"), res);
1312 if (GNUNET_SYSERR == res)
1319 GNUNET_NAT_register (plugin->env->cfg, GNUNET_YES, plugin->port,
1321 (const struct sockaddr **) addrs, addrlens,
1322 &nat_port_map_callback, NULL, plugin);
1327 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name, _("FREEING %s\n"),
1328 GNUNET_a2s (addrs[res], addrlens[res]));
1330 GNUNET_assert (addrs[res] != NULL);
1331 GNUNET_free (addrs[res]);
1333 GNUNET_free_non_null (addrs);
1334 GNUNET_free_non_null (addrlens);
1339 stop_report_addresses (struct Plugin *plugin)
1342 /* Stop NAT handle */
1343 if (NULL != plugin->nat)
1344 GNUNET_NAT_unregister (plugin->nat);
1346 /* Clean up addresses */
1347 struct IPv4HttpAddressWrapper *w_t4;
1348 struct IPv6HttpAddressWrapper *w_t6;
1350 while (plugin->ipv4_addr_head != NULL)
1352 w_t4 = plugin->ipv4_addr_head;
1353 GNUNET_CONTAINER_DLL_remove (plugin->ipv4_addr_head, plugin->ipv4_addr_tail,
1358 while (plugin->ipv6_addr_head != NULL)
1360 w_t6 = plugin->ipv6_addr_head;
1361 GNUNET_CONTAINER_DLL_remove (plugin->ipv6_addr_head, plugin->ipv6_addr_tail,
1369 configure_plugin (struct Plugin *plugin)
1371 int res = GNUNET_OK;
1374 if (GNUNET_CONFIGURATION_have_value
1375 (plugin->env->cfg, plugin->name, "USE_IPv4"))
1378 GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
1382 plugin->ipv4 = GNUNET_YES;
1385 if (GNUNET_CONFIGURATION_have_value
1386 (plugin->env->cfg, plugin->name, "USE_IPv6"))
1389 GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
1393 plugin->ipv6 = GNUNET_YES;
1395 if ((plugin->ipv4 == GNUNET_NO) && (plugin->ipv6 == GNUNET_NO))
1397 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1399 ("Neither IPv4 nor IPv6 are enabled! Fix in configuration\n"),
1401 res = GNUNET_SYSERR;
1404 /* Reading port number from config file */
1405 unsigned long long port;
1408 GNUNET_CONFIGURATION_get_value_number (plugin->env->cfg, plugin->name,
1409 "PORT", &port)) || (port > 65535))
1411 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1412 _("Port is required! Fix in configuration\n"),
1414 res = GNUNET_SYSERR;
1417 plugin->port = port;
1419 plugin->client_only = GNUNET_NO;
1420 if (plugin->port == 0)
1422 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1423 _("Port 0, client only mode\n"));
1424 plugin->client_only = GNUNET_YES;
1427 char *bind4_address = NULL;
1429 if ((plugin->ipv4 == GNUNET_YES) &&
1431 GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg, plugin->name,
1432 "BINDTO", &bind4_address)))
1434 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1435 "Binding %s plugin to specific IPv4 address: `%s'\n",
1436 plugin->protocol, bind4_address);
1437 plugin->server_addr_v4 = GNUNET_malloc (sizeof (struct sockaddr_in));
1439 inet_pton (AF_INET, bind4_address, &plugin->server_addr_v4->sin_addr))
1441 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1443 ("Specific IPv4 address `%s' for plugin %s in configuration file is invalid! Binding to all addresses!\n"),
1444 bind4_address, plugin->protocol);
1445 GNUNET_free (plugin->server_addr_v4);
1446 plugin->server_addr_v4 = NULL;
1450 plugin->server_addr_v4->sin_family = AF_INET;
1451 plugin->server_addr_v4->sin_port = htons (plugin->port);
1453 GNUNET_free (bind4_address);
1457 char *bind6_address = NULL;
1459 if ((plugin->ipv6 == GNUNET_YES) &&
1461 GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg, plugin->name,
1462 "BINDTO6", &bind6_address)))
1464 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1465 "Binding %s plugin to specific IPv6 address: `%s'\n",
1466 plugin->protocol, bind6_address);
1467 plugin->server_addr_v6 = GNUNET_malloc (sizeof (struct sockaddr_in6));
1469 inet_pton (AF_INET6, bind6_address, &plugin->server_addr_v6->sin6_addr))
1471 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1473 ("Specific IPv6 address `%s' for plugin %s in configuration file is invalid! Binding to all addresses!\n"),
1474 bind6_address, plugin->protocol);
1475 GNUNET_free (plugin->server_addr_v6);
1476 plugin->server_addr_v6 = NULL;
1480 plugin->server_addr_v6->sin6_family = AF_INET6;
1481 plugin->server_addr_v6->sin6_port = htons (plugin->port);
1483 GNUNET_free (bind6_address);
1487 /* Optional parameters */
1488 unsigned long long maxneigh;
1491 GNUNET_CONFIGURATION_get_value_number (plugin->env->cfg, plugin->name,
1492 "MAX_CONNECTIONS", &maxneigh))
1494 plugin->max_connections = maxneigh;
1502 * Session was idle, so disconnect it
1505 session_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1507 GNUNET_assert (NULL != cls);
1508 struct Session *s = cls;
1510 s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
1511 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1512 "Session %p was idle for %llu ms, disconnecting\n",
1513 s, (unsigned long long) GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
1515 /* call session destroy function */
1516 if (s->inbound == GNUNET_NO)
1517 GNUNET_assert (GNUNET_OK == client_disconnect (s));
1519 GNUNET_assert (GNUNET_OK == server_disconnect (s));
1524 * Start session timeout
1527 start_session_timeout (struct Session *s)
1529 GNUNET_assert (NULL != s);
1530 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == s->timeout_task);
1531 s->timeout_task = GNUNET_SCHEDULER_add_delayed (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT,
1534 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1535 "Timeout for session %p set to %llu ms\n",
1536 s, (unsigned long long) GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
1541 * Increment session timeout due to activity
1544 reschedule_session_timeout (struct Session *s)
1546 GNUNET_assert (NULL != s);
1547 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != s->timeout_task);
1549 GNUNET_SCHEDULER_cancel (s->timeout_task);
1550 s->timeout_task = GNUNET_SCHEDULER_add_delayed (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT,
1553 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1554 "Timeout rescheduled for session %p set to %llu ms\n",
1555 s, (unsigned long long) GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
1563 stop_session_timeout (struct Session *s)
1565 GNUNET_assert (NULL != s);
1567 if (GNUNET_SCHEDULER_NO_TASK != s->timeout_task)
1569 GNUNET_SCHEDULER_cancel (s->timeout_task);
1570 s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
1571 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1572 "Timeout stopped for session %p canceled\n",
1573 s, (unsigned long long) GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
1578 * Entry point for the plugin.
1581 LIBGNUNET_PLUGIN_TRANSPORT_INIT (void *cls)
1583 struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
1584 struct GNUNET_TRANSPORT_PluginFunctions *api;
1585 struct Plugin *plugin;
1588 if (NULL == env->receive)
1590 /* run in 'stub' mode (i.e. as part of gnunet-peerinfo), don't fully
1591 initialze the plugin or the API */
1592 api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
1594 api->address_pretty_printer = &http_plugin_address_pretty_printer;
1595 api->address_to_string = &http_plugin_address_to_string;
1596 api->string_to_address = &http_string_to_address;
1600 plugin = GNUNET_malloc (sizeof (struct Plugin));
1602 plugin->outbound_sessions = 0;
1603 plugin->inbound_sessions = 0;
1604 api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
1606 api->disconnect = &http_plugin_disconnect;
1607 api->address_pretty_printer = &http_plugin_address_pretty_printer;
1608 api->check_address = &http_plugin_address_suggested;
1609 api->address_to_string = &http_plugin_address_to_string;
1610 api->string_to_address = &http_string_to_address;
1611 api->get_session = &http_get_session;
1612 api->send = &http_plugin_send;
1615 plugin->name = "transport-https";
1616 plugin->protocol = "https";
1618 plugin->name = "transport-http";
1619 plugin->protocol = "http";
1621 /* Configure plugin from configuration */
1622 res = configure_plugin (plugin);
1623 if (res == GNUNET_SYSERR)
1625 GNUNET_free_non_null (plugin->server_addr_v4);
1626 GNUNET_free_non_null (plugin->server_addr_v6);
1627 GNUNET_free (plugin);
1632 /* checking IPv6 support */
1633 http_check_ipv6 (plugin);
1636 res = client_start (plugin);
1637 if (res == GNUNET_SYSERR)
1639 GNUNET_free_non_null (plugin->server_addr_v4);
1640 GNUNET_free_non_null (plugin->server_addr_v6);
1641 GNUNET_free (plugin);
1647 if (plugin->client_only == GNUNET_NO)
1649 res = server_start (plugin);
1650 if (res == GNUNET_SYSERR)
1652 server_stop (plugin);
1653 client_stop (plugin);
1655 GNUNET_free_non_null (plugin->server_addr_v4);
1656 GNUNET_free_non_null (plugin->server_addr_v6);
1657 GNUNET_free (plugin);
1662 /* Report addresses to transport service */
1663 start_report_addresses (plugin);
1665 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1666 "Plugin `%s' loaded\n", plugin->name);
1672 * Exit point from the plugin.
1675 LIBGNUNET_PLUGIN_TRANSPORT_DONE (void *cls)
1677 struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
1678 struct Plugin *plugin = api->cls;
1687 /* Stop reporting addresses to transport service */
1688 stop_report_addresses (plugin);
1690 /* cleaning up sessions */
1694 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1695 "Disconnecting `%s' \n", GNUNET_i2s (&s->target));
1696 if (s->inbound == GNUNET_NO)
1697 GNUNET_assert (GNUNET_OK == client_disconnect (s));
1699 GNUNET_assert (GNUNET_OK == server_disconnect (s));
1703 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, "Stopping server\n");
1705 server_stop (plugin);
1707 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, "Stopping client\n");
1709 client_stop (plugin);
1711 /* deleting up sessions */
1715 struct Session *t = s->next;
1717 GNUNET_CONTAINER_DLL_remove (plugin->head, plugin->tail, s);
1719 struct HTTP_Message *msg = s->msg_head;
1720 struct HTTP_Message *tmp = NULL;
1726 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
1727 if (msg->transmit_cont != NULL)
1729 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_SYSERR);
1739 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1740 "Plugin `%s' unloaded\n", plugin->name);
1741 GNUNET_free_non_null (plugin->server_addr_v4);
1742 GNUNET_free_non_null (plugin->server_addr_v6);
1743 GNUNET_free (plugin);
1748 /* end of plugin_transport_http.c */