2 This file is part of GNUnet.
3 (C) 2010,2011 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.h"
34 #include "transport.h"
37 * How many messages can we have pending for a given client process
38 * before we start to drop incoming messages? We typically should
39 * have only one client and so this would be the primary buffer for
40 * messages, so the number should be chosen rather generously.
42 * The expectation here is that most of the time the queue is large
43 * enough so that a drop is virtually never required. Note that
44 * this value must be about as large as 'TOTAL_MSGS' in the
45 * 'test_transport_api_reliability.c', otherwise that testcase may
48 #define MAX_PENDING (128 * 1024)
52 * Linked list of messages to be transmitted to the client. Each
53 * entry is followed by the actual message.
55 struct ClientMessageQueueEntry
58 * This is a doubly-linked list.
60 struct ClientMessageQueueEntry *next;
63 * This is a doubly-linked list.
65 struct ClientMessageQueueEntry *prev;
70 * Client connected to the transport service.
72 struct TransportClient
76 * This is a doubly-linked list.
78 struct TransportClient *next;
81 * This is a doubly-linked list.
83 struct TransportClient *prev;
86 * Handle to the client.
88 struct GNUNET_SERVER_Client *client;
91 * Linked list of messages yet to be transmitted to
94 struct ClientMessageQueueEntry *message_queue_head;
97 * Tail of linked list of messages yet to be transmitted to the
100 struct ClientMessageQueueEntry *message_queue_tail;
103 * Current transmit request handle.
105 struct GNUNET_CONNECTION_TransmitHandle *th;
108 * Length of the list of messages pending for this client.
110 unsigned int message_count;
116 * Head of linked list of all clients to this service.
118 static struct TransportClient *clients_head;
121 * Tail of linked list of all clients to this service.
123 static struct TransportClient *clients_tail;
127 * Find the internal handle associated with the given client handle
129 * @param client server's client handle to look up
130 * @return internal client handle
132 static struct TransportClient *
133 lookup_client (struct GNUNET_SERVER_Client *client)
135 struct TransportClient *tc;
140 if (tc->client == client)
149 * Create the internal handle for the given server client handle
151 * @param client server's client handle to create our internal handle for
152 * @return fresh internal client handle
154 static struct TransportClient *
155 setup_client (struct GNUNET_SERVER_Client *client)
157 struct TransportClient *tc;
159 tc = GNUNET_malloc (sizeof (struct TransportClient));
161 GNUNET_CONTAINER_DLL_insert (clients_head, clients_tail, tc);
167 * Function called to notify a client about the socket being ready to
168 * queue more data. "buf" will be NULL and "size" zero if the socket
169 * was closed for writing in the meantime.
172 * @param size number of bytes available in buf
173 * @param buf where the callee should write the message
174 * @return number of bytes written to buf
177 transmit_to_client_callback (void *cls, size_t size, void *buf)
179 struct TransportClient *tc = cls;
180 struct ClientMessageQueueEntry *q;
181 const struct GNUNET_MessageHeader *msg;
190 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
191 "Transmission to client failed, closing connection.\n");
197 while (NULL != (q = tc->message_queue_head))
199 msg = (const struct GNUNET_MessageHeader *) &q[1];
200 msize = ntohs (msg->size);
201 if (msize + tsize > size)
204 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
205 "Transmitting message of type %u to client.\n",
208 GNUNET_CONTAINER_DLL_remove (tc->message_queue_head, tc->message_queue_tail,
211 memcpy (&cbuf[tsize], msg, msize);
217 GNUNET_assert (msize >= sizeof (struct GNUNET_MessageHeader));
219 GNUNET_SERVER_notify_transmit_ready (tc->client, msize,
220 GNUNET_TIME_UNIT_FOREVER_REL,
221 &transmit_to_client_callback, tc);
222 GNUNET_assert (tc->th != NULL);
229 * Queue the given message for transmission to the given client
231 * @param client target of the message
232 * @param msg message to transmit
233 * @param may_drop GNUNET_YES if the message can be dropped
236 unicast (struct TransportClient *tc, const struct GNUNET_MessageHeader *msg,
239 struct ClientMessageQueueEntry *q;
242 if ((tc->message_count >= MAX_PENDING) && (GNUNET_YES == may_drop))
244 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
246 ("Dropping message of type %u and size %u, have %u/%u messages pending\n"),
247 ntohs (msg->type), ntohs (msg->size), tc->message_count,
249 GNUNET_STATISTICS_update (GST_stats,
251 ("# messages dropped due to slow client"), 1,
255 msize = ntohs (msg->size);
256 GNUNET_assert (msize >= sizeof (struct GNUNET_MessageHeader));
257 q = GNUNET_malloc (sizeof (struct ClientMessageQueueEntry) + msize);
258 memcpy (&q[1], msg, msize);
259 GNUNET_CONTAINER_DLL_insert_tail (tc->message_queue_head,
260 tc->message_queue_tail, q);
265 GNUNET_SERVER_notify_transmit_ready (tc->client, msize,
266 GNUNET_TIME_UNIT_FOREVER_REL,
267 &transmit_to_client_callback, tc);
268 GNUNET_assert (tc->th != NULL);
273 * Called whenever a client is disconnected. Frees our
274 * resources associated with that client.
277 * @param client identification of the client
280 client_disconnect_notification (void *cls, struct GNUNET_SERVER_Client *client)
282 struct TransportClient *tc;
283 struct ClientMessageQueueEntry *mqe;
287 tc = lookup_client (client);
291 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
292 "Client disconnected, cleaning up.\n");
294 while (NULL != (mqe = tc->message_queue_head))
296 GNUNET_CONTAINER_DLL_remove (tc->message_queue_head, tc->message_queue_tail,
301 GNUNET_CONTAINER_DLL_remove (clients_head, clients_tail, tc);
304 GNUNET_CONNECTION_notify_transmit_ready_cancel (tc->th);
307 GNUNET_break (0 == tc->message_count);
313 * Function called for each of our connected neighbours. Notify the
314 * client about the existing neighbour.
316 * @param cls the 'struct TransportClient' to notify
317 * @param peer identity of the neighbour
318 * @param ats performance data
319 * @param ats_count number of entries in ats (excluding 0-termination)
322 notify_client_about_neighbour (void *cls,
323 const struct GNUNET_PeerIdentity *peer,
324 const struct GNUNET_TRANSPORT_ATS_Information
325 *ats, uint32_t ats_count)
327 struct TransportClient *tc = cls;
328 struct ConnectInfoMessage *cim;
332 sizeof (struct ConnectInfoMessage) +
333 ats_count * sizeof (struct GNUNET_TRANSPORT_ATS_Information);
334 GNUNET_assert (size < GNUNET_SERVER_MAX_MESSAGE_SIZE);
335 cim = GNUNET_malloc (size);
336 cim->header.size = htons (size);
337 cim->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_CONNECT);
338 cim->ats_count = htonl (ats_count);
340 memcpy (&cim->ats, ats,
341 ats_count * sizeof (struct GNUNET_TRANSPORT_ATS_Information));
342 unicast (tc, &cim->header, GNUNET_NO);
348 * Initialize a normal client. We got a start message from this
349 * client, add him to the list of clients for broadcasting of inbound
353 * @param client the client
354 * @param message the start message that was sent
357 clients_handle_start (void *cls, struct GNUNET_SERVER_Client *client,
358 const struct GNUNET_MessageHeader *message)
360 const struct StartMessage *start;
361 struct TransportClient *tc;
363 tc = lookup_client (client);
366 /* got 'start' twice from the same client, not allowed */
368 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
371 start = (const struct StartMessage *) message;
372 if ((GNUNET_NO != ntohl (start->do_check)) &&
374 memcmp (&start->self, &GST_my_identity,
375 sizeof (struct GNUNET_PeerIdentity))))
377 /* client thinks this is a different peer, reject */
378 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
380 ("Rejecting control connection from peer `%s', which is not me!\n"),
381 GNUNET_i2s (&start->self));
382 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
385 tc = setup_client (client);
386 unicast (tc, GST_hello_get (), GNUNET_NO);
387 GST_neighbours_iterate (¬ify_client_about_neighbour, tc);
388 GNUNET_SERVER_receive_done (client, GNUNET_OK);
393 * Client sent us a HELLO. Process the request.
396 * @param client the client
397 * @param message the HELLO message
400 clients_handle_hello (void *cls, struct GNUNET_SERVER_Client *client,
401 const struct GNUNET_MessageHeader *message)
403 GST_validation_handle_hello (message);
404 GNUNET_SERVER_receive_done (client, GNUNET_OK);
409 * Closure for 'handle_send_transmit_continuation'
411 struct SendTransmitContinuationContext
414 * Client that made the request.
416 struct GNUNET_SERVER_Client *client;
419 * Peer that was the target.
421 struct GNUNET_PeerIdentity target;
426 * Function called after the transmission is done. Notify the client that it is
427 * OK to send the next message.
430 * @param success GNUNET_OK on success, GNUNET_NO on failure, GNUNET_SYSERR if we're not connected
433 handle_send_transmit_continuation (void *cls, int success)
435 struct SendTransmitContinuationContext *stcc = cls;
436 struct SendOkMessage send_ok_msg;
438 send_ok_msg.header.size = htons (sizeof (send_ok_msg));
439 send_ok_msg.header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_OK);
440 send_ok_msg.success = htonl (success);
441 send_ok_msg.latency =
442 GNUNET_TIME_relative_hton (GNUNET_TIME_UNIT_FOREVER_REL);
443 send_ok_msg.peer = stcc->target;
444 GST_clients_unicast (stcc->client, &send_ok_msg.header, GNUNET_NO);
445 GNUNET_SERVER_client_drop (stcc->client);
451 * Client asked for transmission to a peer. Process the request.
454 * @param client the client
455 * @param message the send message that was sent
458 clients_handle_send (void *cls, struct GNUNET_SERVER_Client *client,
459 const struct GNUNET_MessageHeader *message)
461 const struct OutboundMessage *obm;
462 const struct GNUNET_MessageHeader *obmm;
463 struct SendTransmitContinuationContext *stcc;
467 size = ntohs (message->size);
469 sizeof (struct OutboundMessage) + sizeof (struct GNUNET_MessageHeader))
472 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
475 obm = (const struct OutboundMessage *) message;
476 obmm = (const struct GNUNET_MessageHeader *) &obm[1];
477 msize = size - sizeof (struct OutboundMessage);
478 if (msize < sizeof (struct GNUNET_MessageHeader))
481 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
484 GNUNET_STATISTICS_update (GST_stats,
486 ("# bytes payload received for other peers"), msize,
489 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
490 "Received `%s' request from client with target `%4s' and first message of type %u and total size %u\n",
491 "SEND", GNUNET_i2s (&obm->peer), ntohs (obmm->type), msize);
493 if (GNUNET_NO == GST_neighbours_test_connected (&obm->peer))
495 /* not connected, not allowed to send; can happen due to asynchronous operations */
496 GNUNET_STATISTICS_update (GST_stats,
498 ("# bytes payload dropped (other peer was not connected)"),
500 GNUNET_SERVER_receive_done (client, GNUNET_OK);
503 GNUNET_SERVER_receive_done (client, GNUNET_OK);
504 stcc = GNUNET_malloc (sizeof (struct SendTransmitContinuationContext));
505 stcc->target = obm->peer;
506 stcc->client = client;
507 GNUNET_SERVER_client_keep (client);
508 GST_neighbours_send (&obm->peer, obmm, msize,
509 GNUNET_TIME_relative_ntoh (obm->timeout),
510 &handle_send_transmit_continuation, stcc);
515 * Try to initiate a connection to the given peer if the blacklist
518 * @param cls closure (unused, NULL)
519 * @param peer identity of peer that was tested
520 * @param result GNUNET_OK if the connection is allowed,
524 try_connect_if_allowed (void *cls, const struct GNUNET_PeerIdentity *peer,
527 if (GNUNET_OK != result)
528 return; /* not allowed */
529 GST_neighbours_try_connect (peer);
534 * Handle request connect message
536 * @param cls closure (always NULL)
537 * @param client identification of the client
538 * @param message the actual message
541 clients_handle_request_connect (void *cls, struct GNUNET_SERVER_Client *client,
542 const struct GNUNET_MessageHeader *message)
544 const struct TransportRequestConnectMessage *trcm =
545 (const struct TransportRequestConnectMessage *) message;
547 GNUNET_STATISTICS_update (GST_stats,
549 ("# REQUEST CONNECT messages received"), 1,
552 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
553 "Received a request connect message for peer `%s'\n",
554 GNUNET_i2s (&trcm->peer));
556 (void) GST_blacklist_test_allowed (&trcm->peer, NULL, &try_connect_if_allowed,
558 GNUNET_SERVER_receive_done (client, GNUNET_OK);
563 * Client asked for a quota change for a particular peer. Process the request.
566 * @param client the client
567 * @param message the quota changing message
570 clients_handle_set_quota (void *cls, struct GNUNET_SERVER_Client *client,
571 const struct GNUNET_MessageHeader *message)
573 const struct QuotaSetMessage *qsm;
575 qsm = (const struct QuotaSetMessage *) message;
576 GNUNET_STATISTICS_update (GST_stats,
577 gettext_noop ("# SET QUOTA messages received"), 1,
580 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
581 "Received `%s' request (new quota %u) from client for peer `%4s'\n",
582 "SET_QUOTA", (unsigned int) ntohl (qsm->quota.value__),
583 GNUNET_i2s (&qsm->peer));
585 GST_neighbours_set_incoming_quota (&qsm->peer, qsm->quota);
586 GNUNET_SERVER_receive_done (client, GNUNET_OK);
591 * Take the given address and append it to the set of results sent back to
594 * @param cls the transmission context used ('struct GNUNET_SERVER_TransmitContext*')
595 * @param address the resolved name, NULL to indicate the last response
598 transmit_address_to_client (void *cls, const char *address)
600 struct GNUNET_SERVER_TransmitContext *tc = cls;
604 GNUNET_SERVER_transmit_context_append_data (tc, NULL, 0,
605 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_REPLY);
606 GNUNET_SERVER_transmit_context_run (tc, GNUNET_TIME_UNIT_FOREVER_REL);
609 GNUNET_SERVER_transmit_context_append_data (tc, address, strlen (address) + 1,
610 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_REPLY);
615 * Client asked to resolve an address. Process the request.
618 * @param client the client
619 * @param message the resolution request
622 clients_handle_address_lookup (void *cls, struct GNUNET_SERVER_Client *client,
623 const struct GNUNET_MessageHeader *message)
625 const struct AddressLookupMessage *alum;
626 struct GNUNET_TRANSPORT_PluginFunctions *papi;
627 const char *plugin_name;
629 uint32_t address_len;
631 struct GNUNET_SERVER_TransmitContext *tc;
632 struct GNUNET_TIME_Relative rtimeout;
635 size = ntohs (message->size);
636 if (size < sizeof (struct AddressLookupMessage))
639 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
642 alum = (const struct AddressLookupMessage *) message;
643 address_len = ntohl (alum->addrlen);
644 if (size <= sizeof (struct AddressLookupMessage) + address_len)
647 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
650 address = (const char *) &alum[1];
651 plugin_name = (const char *) &address[address_len];
652 if (plugin_name[size - sizeof (struct AddressLookupMessage) - address_len - 1]
656 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
659 rtimeout = GNUNET_TIME_relative_ntoh (alum->timeout);
660 numeric = ntohl (alum->numeric_only);
661 tc = GNUNET_SERVER_transmit_context_create (client);
662 papi = GST_plugins_find (plugin_name);
665 GNUNET_SERVER_transmit_context_append_data (tc, NULL, 0,
666 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_REPLY);
667 GNUNET_SERVER_transmit_context_run (tc, rtimeout);
670 GNUNET_SERVER_disable_receive_done_warning (client);
671 papi->address_pretty_printer (papi->cls, plugin_name, address, address_len,
672 numeric, rtimeout, &transmit_address_to_client,
678 * Send an address to the client.
680 * @param cls our 'struct GNUNET_SERVER_TransmitContext' (for sending)
681 * @param public_key public key for the peer, never NULL
682 * @param target peer this change is about, never NULL
683 * @param valid_until until what time do we consider the address valid?
684 * @param validation_block is FOREVER if the address is for an unsupported plugin (from PEERINFO)
685 * is ZERO if the address is considered valid (no validation needed)
686 * is a time in the future if we're currently denying re-validation
687 * @param plugin_name name of the plugin
688 * @param plugin_address binary address
689 * @param plugin_address_len length of address
692 send_address_to_client (void *cls,
693 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded
694 *public_key, const struct GNUNET_PeerIdentity *target,
695 struct GNUNET_TIME_Absolute valid_until,
696 struct GNUNET_TIME_Absolute validation_block,
697 const char *plugin_name, const void *plugin_address,
698 size_t plugin_address_len)
700 struct GNUNET_SERVER_TransmitContext *tc = cls;
703 /* FIXME: move to a binary format!!! */
704 GNUNET_asprintf (&addr_buf, "%s --- %s, %s",
705 GST_plugins_a2s (plugin_name, plugin_address,
708 GST_neighbours_test_connected (target)) ? "CONNECTED" :
710 (GNUNET_TIME_absolute_get_remaining (valid_until).rel_value >
711 0) ? "VALIDATED" : "UNVALIDATED");
712 transmit_address_to_client (tc, addr_buf);
713 GNUNET_free (addr_buf);
718 * Client asked to obtain information about a peer's addresses.
719 * Process the request.
720 * FIXME: use better name!
723 * @param client the client
724 * @param message the peer address information request
727 clients_handle_peer_address_lookup (void *cls,
728 struct GNUNET_SERVER_Client *client,
729 const struct GNUNET_MessageHeader *message)
731 const struct PeerAddressLookupMessage *peer_address_lookup;
732 struct GNUNET_SERVER_TransmitContext *tc;
734 peer_address_lookup = (const struct PeerAddressLookupMessage *) message;
735 GNUNET_break (ntohl (peer_address_lookup->reserved) == 0);
736 tc = GNUNET_SERVER_transmit_context_create (client);
737 GST_validation_get_addresses (&peer_address_lookup->peer,
738 &send_address_to_client, tc);
739 GNUNET_SERVER_transmit_context_append_data (tc, NULL, 0,
740 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_REPLY);
741 GNUNET_SERVER_transmit_context_run (tc, GNUNET_TIME_UNIT_FOREVER_REL);
746 * Output the active address of connected neighbours to the given client.
748 * @param cls the 'struct GNUNET_SERVER_TransmitContext' for transmission to the client
749 * @param neighbour identity of the neighbour
750 * @param ats performance data
751 * @param ats_count number of entries in ats (excluding 0-termination)
754 output_addresses (void *cls, const struct GNUNET_PeerIdentity *neighbour,
755 const struct GNUNET_TRANSPORT_ATS_Information *ats,
758 struct GNUNET_SERVER_TransmitContext *tc = cls;
761 /* FIXME: move to a binary format!!! */
762 GNUNET_asprintf (&addr_buf, "%s: %s", GNUNET_i2s (neighbour),
763 GST_plugins_a2s ("FIXME", NULL, 0));
764 transmit_address_to_client (tc, addr_buf);
765 GNUNET_free (addr_buf);
770 * Client asked to obtain information about all actively used addresses.
771 * Process the request. FIXME: use better name!
774 * @param client the client
775 * @param message the peer address information request
778 clients_handle_address_iterate (void *cls, struct GNUNET_SERVER_Client *client,
779 const struct GNUNET_MessageHeader *message)
781 struct GNUNET_SERVER_TransmitContext *tc;
783 GNUNET_SERVER_disable_receive_done_warning (client);
784 tc = GNUNET_SERVER_transmit_context_create (client);
785 GST_neighbours_iterate (&output_addresses, tc);
786 GNUNET_SERVER_transmit_context_append_data (tc, NULL, 0,
787 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_REPLY);
788 GNUNET_SERVER_transmit_context_run (tc, GNUNET_TIME_UNIT_FOREVER_REL);
793 * Start handling requests from clients.
795 * @param server server used to accept clients from.
798 GST_clients_start (struct GNUNET_SERVER_Handle *server)
800 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
801 {&clients_handle_start, NULL,
802 GNUNET_MESSAGE_TYPE_TRANSPORT_START, sizeof (struct StartMessage)},
803 {&clients_handle_hello, NULL,
804 GNUNET_MESSAGE_TYPE_HELLO, 0},
805 {&clients_handle_send, NULL,
806 GNUNET_MESSAGE_TYPE_TRANSPORT_SEND, 0},
807 {&clients_handle_request_connect, NULL,
808 GNUNET_MESSAGE_TYPE_TRANSPORT_REQUEST_CONNECT,
809 sizeof (struct TransportRequestConnectMessage)},
810 {&clients_handle_set_quota, NULL,
811 GNUNET_MESSAGE_TYPE_TRANSPORT_SET_QUOTA, sizeof (struct QuotaSetMessage)},
812 {&clients_handle_address_lookup, NULL,
813 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_LOOKUP, 0},
814 {&clients_handle_peer_address_lookup, NULL,
815 GNUNET_MESSAGE_TYPE_TRANSPORT_PEER_ADDRESS_LOOKUP,
816 sizeof (struct PeerAddressLookupMessage)},
817 {&clients_handle_address_iterate, NULL,
818 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_ITERATE,
819 sizeof (struct GNUNET_MessageHeader)},
820 {&GST_blacklist_handle_init, NULL,
821 GNUNET_MESSAGE_TYPE_TRANSPORT_BLACKLIST_INIT,
822 sizeof (struct GNUNET_MessageHeader)},
823 {&GST_blacklist_handle_reply, NULL,
824 GNUNET_MESSAGE_TYPE_TRANSPORT_BLACKLIST_REPLY,
825 sizeof (struct BlacklistMessage)},
828 GNUNET_SERVER_add_handlers (server, handlers);
829 GNUNET_SERVER_disconnect_notify (server, &client_disconnect_notification,
835 * Stop processing clients.
845 * Broadcast the given message to all of our clients.
847 * @param msg message to broadcast
848 * @param may_drop GNUNET_YES if the message can be dropped
851 GST_clients_broadcast (const struct GNUNET_MessageHeader *msg, int may_drop)
853 struct TransportClient *tc;
855 for (tc = clients_head; tc != NULL; tc = tc->next)
856 unicast (tc, msg, may_drop);
861 * Send the given message to a particular client
863 * @param client target of the message
864 * @param msg message to transmit
865 * @param may_drop GNUNET_YES if the message can be dropped
868 GST_clients_unicast (struct GNUNET_SERVER_Client *client,
869 const struct GNUNET_MessageHeader *msg, int may_drop)
871 struct TransportClient *tc;
873 tc = lookup_client (client);
875 tc = setup_client (client);
876 unicast (tc, msg, may_drop);
880 /* end of file gnunet-service-transport_clients.c */