2 This file is part of GNUnet.
3 (C) 2010-2014 Christian Grothoff (and other contributing authors)
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22 * @file transport/gnunet-service-transport_clients.c
23 * @brief plugin management API
24 * @author Christian Grothoff
27 #include "gnunet-service-transport_blacklist.h"
28 #include "gnunet-service-transport_clients.h"
29 #include "gnunet-service-transport_hello.h"
30 #include "gnunet-service-transport_neighbours.h"
31 #include "gnunet-service-transport_plugins.h"
32 #include "gnunet-service-transport_validation.h"
33 #include "gnunet-service-transport_manipulation.h"
34 #include "gnunet-service-transport.h"
35 #include "transport.h"
39 * How many messages can we have pending for a given client process
40 * before we start to drop incoming messages? We typically should
41 * have only one client and so this would be the primary buffer for
42 * messages, so the number should be chosen rather generously.
44 * The expectation here is that most of the time the queue is large
45 * enough so that a drop is virtually never required. Note that
46 * this value must be about as large as 'TOTAL_MSGS' in the
47 * 'test_transport_api_reliability.c', otherwise that testcase may
50 #define MAX_PENDING (128 * 1024)
54 * Linked list of messages to be transmitted to the client. Each
55 * entry is followed by the actual message.
57 struct ClientMessageQueueEntry
60 * This is a doubly-linked list.
62 struct ClientMessageQueueEntry *next;
65 * This is a doubly-linked list.
67 struct ClientMessageQueueEntry *prev;
72 * Client connected to the transport service.
74 struct TransportClient
78 * This is a doubly-linked list.
80 struct TransportClient *next;
83 * This is a doubly-linked list.
85 struct TransportClient *prev;
88 * Handle to the client.
90 struct GNUNET_SERVER_Client *client;
93 * Linked list of messages yet to be transmitted to
96 struct ClientMessageQueueEntry *message_queue_head;
99 * Tail of linked list of messages yet to be transmitted to the
102 struct ClientMessageQueueEntry *message_queue_tail;
105 * Current transmit request handle.
107 struct GNUNET_SERVER_TransmitHandle *th;
110 * Length of the list of messages pending for this client.
112 unsigned int message_count;
115 * Is this client interested in payload messages?
122 * Context for address to string operations
124 struct AddressToStringContext
127 * This is a doubly-linked list.
129 struct AddressToStringContext *next;
132 * This is a doubly-linked list.
134 struct AddressToStringContext *prev;
137 * Transmission context
139 struct GNUNET_SERVER_TransmitContext* tc;
144 * Client monitoring changes of active addresses of our neighbours.
146 struct MonitoringClient
149 * This is a doubly-linked list.
151 struct MonitoringClient *next;
154 * This is a doubly-linked list.
156 struct MonitoringClient *prev;
159 * Handle to the client.
161 struct GNUNET_SERVER_Client *client;
164 * Peer identity to monitor the addresses of.
165 * Zero to monitor all neighrours.
167 struct GNUNET_PeerIdentity peer;
173 * Head of linked list of all clients to this service.
175 static struct TransportClient *clients_head;
178 * Tail of linked list of all clients to this service.
180 static struct TransportClient *clients_tail;
183 * Head of linked list of all pending address iterations
185 struct AddressToStringContext *a2s_head;
188 * Tail of linked list of all pending address iterations
190 struct AddressToStringContext *a2s_tail;
193 * Head of linked list of monitoring clients.
195 static struct MonitoringClient *peer_monitoring_clients_head;
198 * Tail of linked list of monitoring clients.
200 static struct MonitoringClient *peer_monitoring_clients_tail;
203 * Head of linked list of validation monitoring clients.
205 static struct MonitoringClient *val_monitoring_clients_head;
208 * Tail of linked list of validation monitoring clients.
210 static struct MonitoringClient *val_monitoring_clients_tail;
213 * Notification context, to send updates on changes to active addresses
216 static struct GNUNET_SERVER_NotificationContext *peer_nc;
219 * Notification context, to send updates on changes to active addresses
222 static struct GNUNET_SERVER_NotificationContext *val_nc;
225 * Notification context, to send updates on changes to active plugin
228 static struct GNUNET_SERVER_NotificationContext *plugin_nc;
231 * Plugin monitoring client we are currently syncing, NULL if all
232 * monitoring clients are in sync.
234 static struct GNUNET_SERVER_Client *sync_client;
237 * Peer identity that is all zeros, used as a way to indicate
238 * "all peers". Used for comparissons.
240 static struct GNUNET_PeerIdentity all_zeros;
244 * Find the internal handle associated with the given client handle.
246 * @param client server's client handle to look up
247 * @return internal client handle
249 static struct TransportClient *
250 lookup_client (struct GNUNET_SERVER_Client *client)
252 return GNUNET_SERVER_client_get_user_context (client,
253 struct TransportClient);
258 * Create the internal handle for the given server client handle.
260 * @param client server's client handle to create our internal handle for
261 * @return fresh internal client handle
263 static struct TransportClient *
264 setup_client (struct GNUNET_SERVER_Client *client)
266 struct TransportClient *tc;
268 GNUNET_assert (NULL == lookup_client (client));
269 tc = GNUNET_new (struct TransportClient);
271 GNUNET_SERVER_client_set_user_context (client, tc);
272 GNUNET_CONTAINER_DLL_insert (clients_head,
275 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
276 "Client %p connected\n",
283 * Find the handle to the monitoring client associated with the given
286 * @param head the head of the client queue to look in
287 * @param client server's client handle to look up
288 * @return handle to the monitoring client
290 static struct MonitoringClient *
291 lookup_monitoring_client (struct MonitoringClient *head,
292 struct GNUNET_SERVER_Client *client)
294 struct MonitoringClient *mc;
296 for (mc = head; NULL != mc; mc = mc->next)
297 if (mc->client == client)
304 * Setup a new monitoring client using the given server client handle and
307 * @param client server's client handle to create our internal handle for
308 * @param peer identity of the peer to monitor the addresses of,
309 * zero to monitor all neighrours.
310 * @return handle to the new monitoring client
312 static struct MonitoringClient *
313 setup_peer_monitoring_client (struct GNUNET_SERVER_Client *client,
314 const struct GNUNET_PeerIdentity *peer)
316 struct MonitoringClient *mc;
318 GNUNET_assert (NULL ==
319 lookup_monitoring_client (peer_monitoring_clients_head,
321 mc = GNUNET_new (struct MonitoringClient);
324 GNUNET_CONTAINER_DLL_insert (peer_monitoring_clients_head,
325 peer_monitoring_clients_tail,
327 GNUNET_SERVER_client_mark_monitor (client);
328 GNUNET_SERVER_notification_context_add (peer_nc,
330 if (0 != memcmp (peer,
332 sizeof (struct GNUNET_PeerIdentity)))
333 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
334 "Client %p started monitoring of the peer `%s'\n",
338 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
339 "Client %p started monitoring all peers\n",
346 * Setup a new monitoring client using the given server client handle and
349 * @param client server's client handle to create our internal handle for
350 * @param peer identity of the peer to monitor the addresses of,
351 * zero to monitor all neighrours.
352 * @return handle to the new monitoring client
354 static struct MonitoringClient *
355 setup_val_monitoring_client (struct GNUNET_SERVER_Client *client,
356 struct GNUNET_PeerIdentity *peer)
358 struct MonitoringClient *mc;
360 GNUNET_assert (NULL ==
361 lookup_monitoring_client (val_monitoring_clients_head,
363 mc = GNUNET_new (struct MonitoringClient);
366 GNUNET_CONTAINER_DLL_insert (val_monitoring_clients_head,
367 val_monitoring_clients_tail,
369 GNUNET_SERVER_notification_context_add (val_nc, client);
371 if (0 != memcmp (peer,
373 sizeof (struct GNUNET_PeerIdentity)))
374 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
375 "Client %p started monitoring of the peer `%s'\n",
376 mc, GNUNET_i2s (peer));
378 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
379 "Client %p started monitoring all peers\n", mc);
385 * Function called to notify a client about the socket being ready to
386 * queue more data. @a buf will be NULL and @a size zero if the socket
387 * was closed for writing in the meantime.
390 * @param size number of bytes available in @a buf
391 * @param buf where the callee should write the message
392 * @return number of bytes written to @a buf
395 transmit_to_client_callback (void *cls,
399 struct TransportClient *tc = cls;
400 struct ClientMessageQueueEntry *q;
401 const struct GNUNET_MessageHeader *msg;
409 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
410 "Transmission to client failed, closing connection.\n");
415 while (NULL != (q = tc->message_queue_head))
417 msg = (const struct GNUNET_MessageHeader *) &q[1];
418 msize = ntohs (msg->size);
419 if (msize + tsize > size)
421 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
422 "Transmitting message of type %u to client %p.\n",
425 GNUNET_CONTAINER_DLL_remove (tc->message_queue_head,
426 tc->message_queue_tail,
429 memcpy (&cbuf[tsize], msg, msize);
435 GNUNET_assert (msize >= sizeof (struct GNUNET_MessageHeader));
437 GNUNET_SERVER_notify_transmit_ready (tc->client, msize,
438 GNUNET_TIME_UNIT_FOREVER_REL,
439 &transmit_to_client_callback, tc);
440 GNUNET_assert (NULL != tc->th);
447 * Queue the given message for transmission to the given client
449 * @param tc target of the message
450 * @param msg message to transmit
451 * @param may_drop #GNUNET_YES if the message can be dropped
454 unicast (struct TransportClient *tc,
455 const struct GNUNET_MessageHeader *msg,
458 struct ClientMessageQueueEntry *q;
466 if ( (tc->message_count >= MAX_PENDING) &&
467 (GNUNET_YES == may_drop) )
469 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
470 _("Dropping message of type %u and size %u, have %u/%u messages pending\n"),
475 GNUNET_STATISTICS_update (GST_stats,
477 ("# messages dropped due to slow client"), 1,
481 msize = ntohs (msg->size);
482 GNUNET_assert (msize >= sizeof (struct GNUNET_MessageHeader));
483 q = GNUNET_malloc (sizeof (struct ClientMessageQueueEntry) + msize);
484 memcpy (&q[1], msg, msize);
485 GNUNET_CONTAINER_DLL_insert_tail (tc->message_queue_head,
486 tc->message_queue_tail,
492 GNUNET_SERVER_notify_transmit_ready (tc->client, msize,
493 GNUNET_TIME_UNIT_FOREVER_REL,
494 &transmit_to_client_callback, tc);
495 GNUNET_assert (NULL != tc->th);
500 * Called whenever a client is disconnected. Frees our
501 * resources associated with that client.
503 * @param cls closure, NULL
504 * @param client identification of the client
507 client_disconnect_notification (void *cls,
508 struct GNUNET_SERVER_Client *client)
510 struct TransportClient *tc;
511 struct MonitoringClient *mc;
512 struct ClientMessageQueueEntry *mqe;
516 mc = lookup_monitoring_client (peer_monitoring_clients_head,
520 GNUNET_CONTAINER_DLL_remove (peer_monitoring_clients_head,
521 peer_monitoring_clients_tail,
525 mc = lookup_monitoring_client (val_monitoring_clients_head,
529 GNUNET_CONTAINER_DLL_remove (val_monitoring_clients_head,
530 val_monitoring_clients_tail,
534 tc = lookup_client (client);
537 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
538 "Client %p disconnected, cleaning up.\n", tc);
539 while (NULL != (mqe = tc->message_queue_head))
541 GNUNET_CONTAINER_DLL_remove (tc->message_queue_head, tc->message_queue_tail,
546 GNUNET_CONTAINER_DLL_remove (clients_head, clients_tail, tc);
547 GNUNET_SERVER_client_set_user_context (client, NULL);
550 GNUNET_SERVER_notify_transmit_ready_cancel (tc->th);
553 GNUNET_break (0 == tc->message_count);
559 * Function called for each of our connected neighbours. Notify the
560 * client about the existing neighbour.
562 * @param cls the `struct TransportClient *` to notify
563 * @param peer identity of the neighbour
564 * @param address the address
565 * @param state the current state of the peer
566 * @param state_timeout the time out for the state
567 * @param bandwidth_in inbound bandwidth in NBO
568 * @param bandwidth_out outbound bandwidth in NBO
571 notify_client_about_neighbour (void *cls,
572 const struct GNUNET_PeerIdentity *peer,
573 const struct GNUNET_HELLO_Address *address,
574 enum GNUNET_TRANSPORT_PeerState state,
575 struct GNUNET_TIME_Absolute state_timeout,
576 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
577 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
579 struct TransportClient *tc = cls;
580 struct ConnectInfoMessage *cim;
581 size_t size = sizeof (struct ConnectInfoMessage);
582 char buf[size] GNUNET_ALIGN;
584 if (GNUNET_NO == GST_neighbours_test_connected (peer))
587 GNUNET_assert (size < GNUNET_SERVER_MAX_MESSAGE_SIZE);
588 cim = (struct ConnectInfoMessage *) buf;
589 cim->header.size = htons (size);
590 cim->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_CONNECT);
592 cim->quota_in = bandwidth_in;
593 cim->quota_out = bandwidth_out;
594 unicast (tc, &cim->header, GNUNET_NO);
599 * Initialize a normal client. We got a start message from this
600 * client, add him to the list of clients for broadcasting of inbound
604 * @param client the client
605 * @param message the start message that was sent
608 clients_handle_start (void *cls,
609 struct GNUNET_SERVER_Client *client,
610 const struct GNUNET_MessageHeader *message)
612 const struct StartMessage *start;
613 struct TransportClient *tc;
616 tc = lookup_client (client);
618 GNUNET_log (GNUNET_ERROR_TYPE_INFO | GNUNET_ERROR_TYPE_BULK,
619 "Client %p sent START\n", tc);
622 /* got 'start' twice from the same client, not allowed */
623 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
624 "TransportClient %p ServerClient %p sent multiple START messages\n",
627 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
630 start = (const struct StartMessage *) message;
631 options = ntohl (start->options);
632 if ((0 != (1 & options)) &&
634 memcmp (&start->self, &GST_my_identity,
635 sizeof (struct GNUNET_PeerIdentity))))
637 /* client thinks this is a different peer, reject */
638 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
639 _("Rejecting control connection from peer `%s', which is not me!\n"),
640 GNUNET_i2s (&start->self));
641 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
644 tc = setup_client (client);
645 tc->send_payload = (0 != (2 & options));
649 GST_neighbours_iterate (¬ify_client_about_neighbour, tc);
650 GNUNET_SERVER_receive_done (client, GNUNET_OK);
655 * Client sent us a HELLO. Process the request.
658 * @param client the client
659 * @param message the HELLO message
662 clients_handle_hello (void *cls, struct GNUNET_SERVER_Client *client,
663 const struct GNUNET_MessageHeader *message)
665 GST_validation_handle_hello (message);
666 GNUNET_SERVER_receive_done (client, GNUNET_OK);
671 * Closure for #handle_send_transmit_continuation()
673 struct SendTransmitContinuationContext
676 * Client that made the request.
678 struct GNUNET_SERVER_Client *client;
681 * Peer that was the target.
683 struct GNUNET_PeerIdentity target;
688 * Function called after the transmission is done. Notify the client that it is
689 * OK to send the next message.
692 * @param success #GNUNET_OK on success, #GNUNET_NO on failure, #GNUNET_SYSERR if we're not connected
693 * @param bytes_payload bytes payload sent
694 * @param bytes_on_wire bytes sent on wire
697 handle_send_transmit_continuation (void *cls,
699 size_t bytes_payload,
700 size_t bytes_on_wire)
702 struct SendTransmitContinuationContext *stcc = cls;
703 struct SendOkMessage send_ok_msg;
705 if (GNUNET_OK == success)
706 GST_neighbours_notify_payload_sent (&stcc->target,
708 send_ok_msg.header.size = htons (sizeof (send_ok_msg));
709 send_ok_msg.header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_OK);
710 send_ok_msg.bytes_msg = htonl (bytes_payload);
711 send_ok_msg.bytes_physical = htonl (bytes_on_wire);
712 send_ok_msg.success = htonl (success);
713 send_ok_msg.peer = stcc->target;
714 GST_clients_unicast (stcc->client,
717 GNUNET_SERVER_client_drop (stcc->client);
723 * Client asked for transmission to a peer. Process the request.
726 * @param client the client
727 * @param message the send message that was sent
730 clients_handle_send (void *cls,
731 struct GNUNET_SERVER_Client *client,
732 const struct GNUNET_MessageHeader *message)
734 const struct OutboundMessage *obm;
735 const struct GNUNET_MessageHeader *obmm;
736 struct SendTransmitContinuationContext *stcc;
739 struct TransportClient *tc;
741 tc = lookup_client (client);
744 /* client asked for transmission before 'START' */
746 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
750 size = ntohs (message->size);
752 sizeof (struct OutboundMessage) + sizeof (struct GNUNET_MessageHeader))
755 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
758 obm = (const struct OutboundMessage *) message;
759 obmm = (const struct GNUNET_MessageHeader *) &obm[1];
760 msize = size - sizeof (struct OutboundMessage);
761 if (msize < sizeof (struct GNUNET_MessageHeader))
764 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
768 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
769 "Received `%s' request from client with target `%4s' and first message of type %u and total size %u\n",
771 GNUNET_i2s (&obm->peer),
774 if (GNUNET_NO == GST_neighbours_test_connected (&obm->peer))
776 /* not connected, not allowed to send; can happen due to asynchronous operations */
777 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
778 "Could not send message to peer `%s': not connected\n",
779 GNUNET_i2s (&obm->peer));
780 GNUNET_STATISTICS_update (GST_stats,
782 ("# bytes payload dropped (other peer was not connected)"),
784 GNUNET_SERVER_receive_done (client, GNUNET_OK);
787 GNUNET_SERVER_receive_done (client, GNUNET_OK);
788 stcc = GNUNET_new (struct SendTransmitContinuationContext);
789 stcc->target = obm->peer;
790 stcc->client = client;
791 GNUNET_SERVER_client_keep (client);
792 GST_manipulation_send (&obm->peer, obmm, msize,
793 GNUNET_TIME_relative_ntoh (obm->timeout),
794 &handle_send_transmit_continuation, stcc);
799 * Try to initiate a connection to the given peer if the blacklist
802 * @param cls closure (unused, NULL)
803 * @param peer identity of peer that was tested
804 * @param result #GNUNET_OK if the connection is allowed,
808 try_connect_if_allowed (void *cls,
809 const struct GNUNET_PeerIdentity *peer,
812 if (GNUNET_OK != result)
814 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
815 _("Blacklist refuses connection attempt to peer `%s'\n"),
817 return; /* not allowed */
820 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
821 _("Blacklist allows connection attempt to peer `%s'\n"),
824 GST_neighbours_try_connect (peer);
829 * Handle request connect message
831 * @param cls closure (always NULL)
832 * @param client identification of the client
833 * @param message the actual message
836 clients_handle_request_connect (void *cls,
837 struct GNUNET_SERVER_Client *client,
838 const struct GNUNET_MessageHeader *message)
840 const struct TransportRequestConnectMessage *trcm =
841 (const struct TransportRequestConnectMessage *) message;
843 if (GNUNET_YES == ntohl (trcm->connect))
845 GNUNET_STATISTICS_update (GST_stats,
847 ("# REQUEST CONNECT messages received"), 1,
850 if (0 == memcmp (&trcm->peer, &GST_my_identity,
851 sizeof (struct GNUNET_PeerIdentity)))
854 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
855 "Received a request connect message myself `%s'\n",
856 GNUNET_i2s (&trcm->peer));
860 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
861 _("Received a request connect message for peer `%s'\n"),
862 GNUNET_i2s (&trcm->peer));
864 (void) GST_blacklist_test_allowed (&trcm->peer, NULL, &try_connect_if_allowed,
868 else if (GNUNET_NO == ntohl (trcm->connect))
870 GNUNET_STATISTICS_update (GST_stats,
872 ("# REQUEST DISCONNECT messages received"), 1,
875 if (0 == memcmp (&trcm->peer, &GST_my_identity,
876 sizeof (struct GNUNET_PeerIdentity)))
879 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
880 "Received a request disconnect message myself `%s'\n",
881 GNUNET_i2s (&trcm->peer));
885 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
886 _("Received a request disconnect message for peer `%s'\n"),
887 GNUNET_i2s (&trcm->peer));
888 (void) GST_neighbours_force_disconnect (&trcm->peer);
894 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
897 GNUNET_SERVER_receive_done (client, GNUNET_OK);
902 * Take the given address and append it to the set of results sent back to
903 * the client. This function may be called serveral times for a single
904 * conversion. The last invocation will be with a @a address of
905 * NULL and a @a res of #GNUNET_OK. Thus, to indicate conversion
906 * errors, the callback might be called first with @a address NULL and
907 * @a res being #GNUNET_SYSERR. In that case, there will still be a
908 * subsequent call later with @a address NULL and @a res #GNUNET_OK.
910 * @param cls the transmission context used (`struct GNUNET_SERVER_TransmitContext *`)
911 * @param buf text to transmit (contains the human-readable address, or NULL)
912 * @param res #GNUNET_OK if conversion was successful, #GNUNET_SYSERR on error,
916 transmit_address_to_client (void *cls,
920 struct AddressToStringContext *actx = cls;
921 struct AddressToStringResultMessage *atsm;
925 GNUNET_assert ( (GNUNET_OK == res) ||
926 (GNUNET_SYSERR == res) );
929 len = sizeof (struct AddressToStringResultMessage);
930 atsm = GNUNET_malloc (len);
931 atsm->header.size = ntohs (len);
932 atsm->header.type = ntohs (GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_TO_STRING_REPLY);
933 if (GNUNET_OK == res)
935 /* this was the last call, transmit */
936 atsm->res = htonl (GNUNET_OK);
937 atsm->addr_len = htonl (0);
938 GNUNET_SERVER_transmit_context_append_message (actx->tc,
939 (const struct GNUNET_MessageHeader *) atsm);
940 GNUNET_SERVER_transmit_context_run (actx->tc,
941 GNUNET_TIME_UNIT_FOREVER_REL);
942 GNUNET_CONTAINER_DLL_remove (a2s_head,
949 if (GNUNET_SYSERR == res)
951 /* address conversion failed, but there will be more callbacks */
952 atsm->res = htonl (GNUNET_SYSERR);
953 atsm->addr_len = htonl (0);
954 GNUNET_SERVER_transmit_context_append_message (actx->tc,
955 (const struct GNUNET_MessageHeader *) atsm);
960 GNUNET_assert (GNUNET_OK == res);
961 /* succesful conversion, append*/
962 slen = strlen (buf) + 1;
963 len = sizeof (struct AddressToStringResultMessage) + slen;
964 atsm = GNUNET_malloc (len);
965 atsm->header.size = ntohs (len);
966 atsm->header.type = ntohs (GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_TO_STRING_REPLY);
967 atsm->res = htonl (GNUNET_YES);
968 atsm->addr_len = htonl (slen);
972 GNUNET_SERVER_transmit_context_append_message (actx->tc,
973 (const struct GNUNET_MessageHeader *) atsm);
979 * Client asked to resolve an address. Process the request.
982 * @param client the client
983 * @param message the resolution request
986 clients_handle_address_to_string (void *cls,
987 struct GNUNET_SERVER_Client *client,
988 const struct GNUNET_MessageHeader *message)
990 const struct AddressLookupMessage *alum;
991 struct GNUNET_TRANSPORT_PluginFunctions *papi;
992 const char *plugin_name;
994 uint32_t address_len;
996 struct GNUNET_SERVER_TransmitContext *tc;
997 struct AddressToStringContext *actx;
998 struct AddressToStringResultMessage atsm;
999 struct GNUNET_TIME_Relative rtimeout;
1002 size = ntohs (message->size);
1003 if (size < sizeof (struct AddressLookupMessage))
1006 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1009 alum = (const struct AddressLookupMessage *) message;
1010 address_len = ntohs (alum->addrlen);
1011 if (size <= sizeof (struct AddressLookupMessage) + address_len)
1014 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1017 address = (const char *) &alum[1];
1018 plugin_name = (const char *) &address[address_len];
1019 if ('\0' != plugin_name[size - sizeof (struct AddressLookupMessage) - address_len - 1])
1022 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1025 rtimeout = GNUNET_TIME_relative_ntoh (alum->timeout);
1026 numeric = ntohs (alum->numeric_only);
1027 tc = GNUNET_SERVER_transmit_context_create (client);
1028 papi = GST_plugins_printer_find (plugin_name);
1031 atsm.header.size = ntohs (sizeof (struct AddressToStringResultMessage));
1032 atsm.header.type = ntohs (GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_TO_STRING_REPLY);
1033 atsm.res = htonl (GNUNET_SYSERR);
1034 atsm.addr_len = htonl (0);
1035 GNUNET_SERVER_transmit_context_append_message (tc,
1037 atsm.header.size = ntohs (sizeof (struct AddressToStringResultMessage));
1038 atsm.header.type = ntohs (GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_TO_STRING_REPLY);
1039 atsm.res = htonl (GNUNET_OK);
1040 atsm.addr_len = htonl (0);
1041 GNUNET_SERVER_transmit_context_append_message (tc,
1043 GNUNET_SERVER_transmit_context_run (tc, GNUNET_TIME_UNIT_FOREVER_REL);
1046 actx = GNUNET_new (struct AddressToStringContext);
1048 GNUNET_CONTAINER_DLL_insert (a2s_head, a2s_tail, actx);
1049 GNUNET_SERVER_disable_receive_done_warning (client);
1050 papi->address_pretty_printer (papi->cls,
1052 address, address_len,
1055 &transmit_address_to_client,
1061 * Compose #PeerIterateResponseMessage using the given peer and address.
1063 * @param peer identity of the peer
1064 * @param address the address, NULL on disconnect
1065 * @return composed message
1067 static struct PeerIterateResponseMessage *
1068 compose_address_iterate_response_message (const struct GNUNET_PeerIdentity *peer,
1069 const struct GNUNET_HELLO_Address *address)
1071 struct PeerIterateResponseMessage *msg;
1077 GNUNET_assert (NULL != peer);
1078 if (NULL != address)
1080 tlen = strlen (address->transport_name) + 1;
1081 alen = address->address_length;
1085 size = (sizeof (struct PeerIterateResponseMessage) + alen + tlen);
1086 msg = GNUNET_malloc (size);
1087 msg->header.size = htons (size);
1089 htons (GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_RESPONSE);
1090 msg->reserved = htonl (0);
1092 msg->addrlen = htonl (alen);
1093 msg->pluginlen = htonl (tlen);
1095 if (NULL != address)
1097 msg->local_address_info = htonl((uint32_t) address->local_info);
1098 addr = (char *) &msg[1];
1099 memcpy (addr, address->address, alen);
1100 memcpy (&addr[alen], address->transport_name, tlen);
1107 * Compose #PeerIterateResponseMessage using the given peer and address.
1109 * @param peer identity of the peer
1110 * @param address the address, NULL on disconnect
1111 * @return composed message
1113 static struct ValidationIterateResponseMessage *
1114 compose_validation_iterate_response_message (const struct GNUNET_PeerIdentity *peer,
1115 const struct GNUNET_HELLO_Address *address)
1117 struct ValidationIterateResponseMessage *msg;
1123 GNUNET_assert (NULL != peer);
1124 if (NULL != address)
1126 tlen = strlen (address->transport_name) + 1;
1127 alen = address->address_length;
1131 size = (sizeof (struct ValidationIterateResponseMessage) + alen + tlen);
1132 msg = GNUNET_malloc (size);
1133 msg->header.size = htons (size);
1135 htons (GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_VALIDATION_RESPONSE);
1136 msg->reserved = htonl (0);
1138 msg->addrlen = htonl (alen);
1139 msg->pluginlen = htonl (tlen);
1141 if (NULL != address)
1143 msg->local_address_info = htonl((uint32_t) address->local_info);
1144 addr = (char *) &msg[1];
1145 memcpy (addr, address->address, alen);
1146 memcpy (&addr[alen], address->transport_name, tlen);
1153 * Context for #send_validation_information() and
1154 * #send_peer_information().
1156 struct IterationContext
1159 * Context to use for the transmission.
1161 struct GNUNET_SERVER_TransmitContext *tc;
1164 * Which peers do we care about?
1166 struct GNUNET_PeerIdentity id;
1169 * #GNUNET_YES if @e id should be ignored because we want all peers.
1176 * Output information of validation entries to the given client.
1178 * @param cls the `struct IterationContext *`
1179 * @param peer identity of the neighbour
1180 * @param address the address
1181 * @param last_validation point in time when last validation was performed
1182 * @param valid_until point in time how long address is valid
1183 * @param next_validation point in time when next validation will be performed
1184 * @param state state of validation notification
1187 send_validation_information (void *cls,
1188 const struct GNUNET_PeerIdentity *peer,
1189 const struct GNUNET_HELLO_Address *address,
1190 struct GNUNET_TIME_Absolute last_validation,
1191 struct GNUNET_TIME_Absolute valid_until,
1192 struct GNUNET_TIME_Absolute next_validation,
1193 enum GNUNET_TRANSPORT_ValidationState state)
1195 struct IterationContext *pc = cls;
1196 struct ValidationIterateResponseMessage *msg;
1198 if ( (GNUNET_YES == pc->all) ||
1199 (0 == memcmp (peer, &pc->id, sizeof (pc->id))) )
1201 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1202 "Sending information about for validation entry for peer `%s' using address `%s'\n",
1203 GNUNET_i2s(peer), (address != NULL) ? GST_plugins_a2s (address) : "<none>");
1204 msg = compose_validation_iterate_response_message (peer, address);
1205 msg->last_validation = GNUNET_TIME_absolute_hton(last_validation);
1206 msg->valid_until = GNUNET_TIME_absolute_hton(valid_until);
1207 msg->next_validation = GNUNET_TIME_absolute_hton(next_validation);
1208 msg->state = htonl ((uint32_t) state);
1209 GNUNET_SERVER_transmit_context_append_message (pc->tc, &msg->header);
1216 * Output information of neighbours to the given client.
1218 * @param cls the `struct PeerIterationContext *`
1219 * @param peer identity of the neighbour
1220 * @param address the address
1221 * @param state current state this peer is in
1222 * @param state_timeout timeout for the current state of the peer
1223 * @param bandwidth_in inbound quota in NBO
1224 * @param bandwidth_out outbound quota in NBO
1227 send_peer_information (void *cls,
1228 const struct GNUNET_PeerIdentity *peer,
1229 const struct GNUNET_HELLO_Address *address,
1230 enum GNUNET_TRANSPORT_PeerState state,
1231 struct GNUNET_TIME_Absolute state_timeout,
1232 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
1233 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
1235 struct IterationContext *pc = cls;
1236 struct PeerIterateResponseMessage *msg;
1238 if ( (GNUNET_YES == pc->all) ||
1239 (0 == memcmp (peer, &pc->id, sizeof (pc->id))) )
1241 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1242 "Sending information about `%s' using address `%s' in state `%s'\n",
1244 (address != NULL) ? GST_plugins_a2s (address) : "<none>",
1245 GNUNET_TRANSPORT_ps2s (state));
1246 msg = compose_address_iterate_response_message (peer, address);
1247 msg->state = htonl (state);
1248 msg->state_timeout = GNUNET_TIME_absolute_hton(state_timeout);
1249 GNUNET_SERVER_transmit_context_append_message (pc->tc, &msg->header);
1256 * Client asked to obtain information about a specific or all peers
1257 * Process the request.
1260 * @param client the client
1261 * @param message the peer address information request
1264 clients_handle_monitor_peers (void *cls,
1265 struct GNUNET_SERVER_Client *client,
1266 const struct GNUNET_MessageHeader *message)
1268 struct GNUNET_SERVER_TransmitContext *tc;
1269 const struct PeerMonitorMessage *msg;
1270 struct IterationContext pc;
1272 msg = (const struct PeerMonitorMessage *) message;
1273 if ( (GNUNET_YES != ntohl (msg->one_shot)) &&
1274 (NULL != lookup_monitoring_client (peer_monitoring_clients_head,
1277 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
1278 "ServerClient %p tried to start monitoring twice\n",
1281 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1284 GNUNET_SERVER_disable_receive_done_warning (client);
1285 GNUNET_SERVER_client_mark_monitor (client);
1286 pc.tc = tc = GNUNET_SERVER_transmit_context_create (client);
1288 /* Send initial list */
1289 if (0 == memcmp (&msg->peer, &all_zeros, sizeof (struct GNUNET_PeerIdentity)))
1291 /* iterate over all neighbours */
1292 pc.all = GNUNET_YES;
1297 /* just return one neighbour */
1301 GST_neighbours_iterate (&send_peer_information, &pc);
1303 if (GNUNET_YES != ntohl (msg->one_shot))
1305 setup_peer_monitoring_client (client, &msg->peer);
1309 GNUNET_SERVER_transmit_context_append_data (tc, NULL, 0,
1310 GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_RESPONSE);
1313 GNUNET_SERVER_transmit_context_run (tc, GNUNET_TIME_UNIT_FOREVER_REL);
1318 * Client asked to obtain information about a specific or all validation
1322 * @param client the client
1323 * @param message the peer address information request
1326 clients_handle_monitor_validation (void *cls,
1327 struct GNUNET_SERVER_Client *client,
1328 const struct GNUNET_MessageHeader *message)
1330 struct GNUNET_SERVER_TransmitContext *tc;
1331 struct PeerMonitorMessage *msg;
1332 struct IterationContext pc;
1334 if (ntohs (message->type) != GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_VALIDATION_REQUEST)
1337 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1340 if (ntohs (message->size) != sizeof (struct ValidationMonitorMessage))
1343 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1346 msg = (struct PeerMonitorMessage *) message;
1347 if ( (GNUNET_YES != ntohl (msg->one_shot)) &&
1348 (NULL != lookup_monitoring_client (val_monitoring_clients_head, client)) )
1350 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
1351 "ServerClient %p tried to start monitoring twice\n",
1354 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1357 GNUNET_SERVER_disable_receive_done_warning (client);
1358 GNUNET_SERVER_client_mark_monitor (client);
1359 pc.tc = tc = GNUNET_SERVER_transmit_context_create (client);
1361 /* Send initial list */
1362 if (0 == memcmp (&msg->peer, &all_zeros, sizeof (struct GNUNET_PeerIdentity)))
1364 /* iterate over all neighbours */
1365 pc.all = GNUNET_YES;
1370 /* just return one neighbour */
1375 GST_validation_iterate (&send_validation_information, &pc);
1377 if (GNUNET_YES != ntohl (msg->one_shot))
1379 setup_val_monitoring_client (client, &msg->peer);
1383 GNUNET_SERVER_transmit_context_append_data (tc, NULL, 0,
1384 GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_VALIDATION_RESPONSE);
1386 GNUNET_SERVER_transmit_context_run (tc, GNUNET_TIME_UNIT_FOREVER_REL);
1391 * Function called by the plugin with information about the
1392 * current sessions managed by the plugin (for monitoring).
1394 * @param cls closure
1395 * @param session session handle this information is about,
1396 * NULL to indicate that we are "in sync" (initial
1397 * iteration complete)
1398 * @param info information about the state of the session,
1399 * NULL if @a session is also NULL and we are
1400 * merely signalling that the initial iteration is over
1403 plugin_session_info_cb (void *cls,
1404 struct Session *session,
1405 const struct GNUNET_TRANSPORT_SessionInfo *info)
1407 struct TransportPluginMonitorMessage *msg;
1408 struct GNUNET_MessageHeader sync;
1415 if (0 == GNUNET_SERVER_notification_context_get_size (plugin_nc))
1417 fprintf (stderr, "UNSUB!\n");
1418 GST_plugins_monitor_subscribe (NULL, NULL);
1421 if ( (NULL == info) &&
1424 /* end of initial iteration */
1425 if (NULL != sync_client)
1427 sync.size = htons (sizeof (struct GNUNET_MessageHeader));
1428 sync.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PLUGIN_SYNC);
1429 GNUNET_SERVER_notification_context_unicast (plugin_nc,
1437 GNUNET_assert (NULL != info);
1438 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1439 "Plugin event for peer %s on transport %s\n",
1440 GNUNET_i2s (&info->address->peer),
1441 info->address->transport_name);
1442 slen = strlen (info->address->transport_name) + 1;
1443 alen = info->address->address_length;
1444 size = sizeof (struct TransportPluginMonitorMessage) + slen + alen;
1445 if (size > UINT16_MAX)
1450 msg = GNUNET_malloc (size);
1451 msg->header.size = htons (size);
1452 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PLUGIN_EVENT);
1453 msg->session_state = htons ((uint16_t) info->state);
1454 msg->is_inbound = htons ((int16_t) info->is_inbound);
1455 msg->msgs_pending = htonl (info->num_msg_pending);
1456 msg->bytes_pending = htonl (info->num_bytes_pending);
1457 msg->timeout = GNUNET_TIME_absolute_hton (info->session_timeout);
1458 msg->delay = GNUNET_TIME_absolute_hton (info->receive_delay);
1459 msg->peer = info->address->peer;
1460 msg->session_id = (uint64_t) (intptr_t) session;
1461 msg->plugin_name_len = htons (slen);
1462 msg->plugin_address_len = htons (alen);
1463 name = (char *) &msg[1];
1464 memcpy (name, info->address->transport_name, slen);
1465 addr = &name[slen + 1];
1466 memcpy (addr, info->address->address, alen);
1467 if (NULL != sync_client)
1468 GNUNET_SERVER_notification_context_unicast (plugin_nc,
1473 GNUNET_SERVER_notification_context_broadcast (plugin_nc,
1481 * Client asked to obtain information about all plugin connections.
1484 * @param client the client
1485 * @param message the peer address information request
1488 clients_handle_monitor_plugins (void *cls,
1489 struct GNUNET_SERVER_Client *client,
1490 const struct GNUNET_MessageHeader *message)
1492 GNUNET_SERVER_client_mark_monitor (client);
1493 GNUNET_SERVER_disable_receive_done_warning (client);
1494 GNUNET_SERVER_notification_context_add (plugin_nc, client);
1495 sync_client = client;
1496 GST_plugins_monitor_subscribe (&plugin_session_info_cb, NULL);
1501 * Start handling requests from clients.
1503 * @param server server used to accept clients from.
1506 GST_clients_start (struct GNUNET_SERVER_Handle *server)
1508 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
1509 {&clients_handle_start, NULL,
1510 GNUNET_MESSAGE_TYPE_TRANSPORT_START, sizeof (struct StartMessage)},
1511 {&clients_handle_hello, NULL,
1512 GNUNET_MESSAGE_TYPE_HELLO, 0},
1513 {&clients_handle_send, NULL,
1514 GNUNET_MESSAGE_TYPE_TRANSPORT_SEND, 0},
1515 {&clients_handle_request_connect, NULL,
1516 GNUNET_MESSAGE_TYPE_TRANSPORT_REQUEST_CONNECT,
1517 sizeof (struct TransportRequestConnectMessage)},
1518 {&clients_handle_address_to_string, NULL,
1519 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_TO_STRING, 0},
1520 {&clients_handle_monitor_peers, NULL,
1521 GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_REQUEST,
1522 sizeof (struct PeerMonitorMessage)},
1523 {&clients_handle_monitor_validation, NULL,
1524 GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_VALIDATION_REQUEST,
1525 sizeof (struct ValidationMonitorMessage)},
1526 {&GST_blacklist_handle_init, NULL,
1527 GNUNET_MESSAGE_TYPE_TRANSPORT_BLACKLIST_INIT,
1528 sizeof (struct GNUNET_MessageHeader)},
1529 {&GST_blacklist_handle_reply, NULL,
1530 GNUNET_MESSAGE_TYPE_TRANSPORT_BLACKLIST_REPLY,
1531 sizeof (struct BlacklistMessage)},
1532 {&GST_manipulation_set_metric, NULL,
1533 GNUNET_MESSAGE_TYPE_TRANSPORT_TRAFFIC_METRIC, 0},
1534 {&clients_handle_monitor_plugins, NULL,
1535 GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PLUGIN_START,
1536 sizeof (struct GNUNET_MessageHeader) },
1539 peer_nc = GNUNET_SERVER_notification_context_create (server, 0);
1540 val_nc = GNUNET_SERVER_notification_context_create (server, 0);
1541 plugin_nc = GNUNET_SERVER_notification_context_create (server, 0);
1542 GNUNET_SERVER_add_handlers (server, handlers);
1543 GNUNET_SERVER_disconnect_notify (server,
1544 &client_disconnect_notification,
1550 * Stop processing clients.
1555 struct AddressToStringContext *cur;
1557 while (NULL != (cur = a2s_head))
1559 GNUNET_SERVER_transmit_context_destroy (cur->tc, GNUNET_NO);
1560 GNUNET_CONTAINER_DLL_remove (a2s_head, a2s_tail, cur);
1563 if (NULL != peer_nc)
1565 GNUNET_SERVER_notification_context_destroy (peer_nc);
1570 GNUNET_SERVER_notification_context_destroy (val_nc);
1573 if (NULL != plugin_nc)
1575 GNUNET_SERVER_notification_context_destroy (plugin_nc);
1582 * Broadcast the given message to all of our clients.
1584 * @param msg message to broadcast
1585 * @param may_drop #GNUNET_YES if the message can be dropped / is payload
1588 GST_clients_broadcast (const struct GNUNET_MessageHeader *msg,
1591 struct TransportClient *tc;
1593 for (tc = clients_head; NULL != tc; tc = tc->next)
1595 if ( (GNUNET_YES == may_drop) &&
1596 (GNUNET_YES != tc->send_payload) )
1597 continue; /* skip, this client does not care about payload */
1598 unicast (tc, msg, may_drop);
1604 * Send the given message to a particular client
1606 * @param client target of the message
1607 * @param msg message to transmit
1608 * @param may_drop #GNUNET_YES if the message can be dropped
1611 GST_clients_unicast (struct GNUNET_SERVER_Client *client,
1612 const struct GNUNET_MessageHeader *msg,
1615 struct TransportClient *tc;
1617 tc = lookup_client (client);
1619 return; /* client got disconnected in the meantime, drop message */
1620 unicast (tc, msg, may_drop);
1625 * Broadcast the new active address to all clients monitoring the peer.
1627 * @param peer peer this update is about (never NULL)
1628 * @param address address, NULL on disconnect
1629 * @param state the current state of the peer
1630 * @param state_timeout the time out for the state
1633 GST_clients_broadcast_peer_notification (const struct GNUNET_PeerIdentity *peer,
1634 const struct GNUNET_HELLO_Address *address,
1635 enum GNUNET_TRANSPORT_PeerState state,
1636 struct GNUNET_TIME_Absolute state_timeout)
1638 struct PeerIterateResponseMessage *msg;
1639 struct MonitoringClient *mc;
1641 msg = compose_address_iterate_response_message (peer, address);
1642 msg->state = htonl (state);
1643 msg->state_timeout = GNUNET_TIME_absolute_hton (state_timeout);
1644 mc = peer_monitoring_clients_head;
1647 if ((0 == memcmp (&mc->peer, &all_zeros,
1648 sizeof (struct GNUNET_PeerIdentity))) ||
1649 (0 == memcmp (&mc->peer, peer,
1650 sizeof (struct GNUNET_PeerIdentity))))
1652 GNUNET_SERVER_notification_context_unicast (peer_nc, mc->client,
1653 &msg->header, GNUNET_NO);
1662 * Broadcast the new validation changes to all clients monitoring the peer.
1664 * @param peer peer this update is about (never NULL)
1665 * @param address address, NULL on disconnect
1666 * @param last_validation point in time when last validation was performed
1667 * @param valid_until point in time how long address is valid
1668 * @param next_validation point in time when next validation will be performed
1669 * @param state state of validation notification
1672 GST_clients_broadcast_validation_notification (const struct GNUNET_PeerIdentity *peer,
1673 const struct GNUNET_HELLO_Address *address,
1674 struct GNUNET_TIME_Absolute last_validation,
1675 struct GNUNET_TIME_Absolute valid_until,
1676 struct GNUNET_TIME_Absolute next_validation,
1677 enum GNUNET_TRANSPORT_ValidationState state)
1679 struct ValidationIterateResponseMessage *msg;
1680 struct MonitoringClient *mc;
1682 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1683 "Sending information about for validation entry for peer `%s' using address `%s'\n",
1684 GNUNET_i2s(peer), (address != NULL) ? GST_plugins_a2s (address) : "<none>");
1686 msg = compose_validation_iterate_response_message (peer, address);
1687 msg->last_validation = GNUNET_TIME_absolute_hton(last_validation);
1688 msg->valid_until = GNUNET_TIME_absolute_hton(valid_until);
1689 msg->next_validation = GNUNET_TIME_absolute_hton(next_validation);
1690 msg->state = htonl ((uint32_t) state);
1691 mc = val_monitoring_clients_head;
1694 if ((0 == memcmp (&mc->peer, &all_zeros,
1695 sizeof (struct GNUNET_PeerIdentity))) ||
1696 (0 == memcmp (&mc->peer, peer,
1697 sizeof (struct GNUNET_PeerIdentity))))
1699 GNUNET_SERVER_notification_context_unicast (val_nc, mc->client,
1700 &msg->header, GNUNET_NO);
1709 /* end of file gnunet-service-transport_clients.c */