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;
115 * Head of linked list of all clients to this service.
117 static struct TransportClient *clients_head;
120 * Tail of linked list of all clients to this service.
122 static struct TransportClient *clients_tail;
125 * Find the internal handle associated with the given client handle
127 * @param client server's client handle to look up
128 * @return internal client handle
130 static struct TransportClient *
131 lookup_client (struct GNUNET_SERVER_Client *client)
133 struct TransportClient *tc;
138 if (tc->client == client)
147 * Create the internal handle for the given server client handle
149 * @param client server's client handle to create our internal handle for
150 * @return fresh internal client handle
152 static struct TransportClient *
153 setup_client (struct GNUNET_SERVER_Client *client)
155 struct TransportClient *tc;
157 GNUNET_assert (lookup_client (client) == NULL);
159 tc = GNUNET_malloc (sizeof (struct TransportClient));
162 GNUNET_CONTAINER_DLL_insert (clients_head, clients_tail, tc);
168 * Function called to notify a client about the socket being ready to
169 * queue more data. "buf" will be NULL and "size" zero if the socket
170 * was closed for writing in the meantime.
173 * @param size number of bytes available in buf
174 * @param buf where the callee should write the message
175 * @return number of bytes written to buf
178 transmit_to_client_callback (void *cls, size_t size, void *buf)
180 struct TransportClient *tc = cls;
181 struct ClientMessageQueueEntry *q;
182 const struct GNUNET_MessageHeader *msg;
191 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
192 "Transmission to client failed, closing connection.\n");
198 while (NULL != (q = tc->message_queue_head))
200 msg = (const struct GNUNET_MessageHeader *) &q[1];
201 msize = ntohs (msg->size);
202 if (msize + tsize > size)
205 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
206 "Transmitting message of type %u to client %X.\n",
207 ntohs (msg->type), tc);
209 GNUNET_CONTAINER_DLL_remove (tc->message_queue_head, tc->message_queue_tail,
212 memcpy (&cbuf[tsize], msg, msize);
218 GNUNET_assert (msize >= sizeof (struct GNUNET_MessageHeader));
220 GNUNET_SERVER_notify_transmit_ready (tc->client, msize,
221 GNUNET_TIME_UNIT_FOREVER_REL,
222 &transmit_to_client_callback, tc);
223 GNUNET_assert (tc->th != NULL);
230 * Queue the given message for transmission to the given client
232 * @param client target of the message
233 * @param msg message to transmit
234 * @param may_drop GNUNET_YES if the message can be dropped
237 unicast (struct TransportClient *tc, const struct GNUNET_MessageHeader *msg,
240 struct ClientMessageQueueEntry *q;
243 if ((tc->message_count >= MAX_PENDING) && (GNUNET_YES == may_drop))
245 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
247 ("Dropping message of type %u and size %u, have %u/%u messages pending\n"),
248 ntohs (msg->type), ntohs (msg->size), tc->message_count,
250 GNUNET_STATISTICS_update (GST_stats,
252 ("# messages dropped due to slow client"), 1,
256 msize = ntohs (msg->size);
257 GNUNET_assert (msize >= sizeof (struct GNUNET_MessageHeader));
258 q = GNUNET_malloc (sizeof (struct ClientMessageQueueEntry) + msize);
259 memcpy (&q[1], msg, msize);
260 GNUNET_CONTAINER_DLL_insert_tail (tc->message_queue_head,
261 tc->message_queue_tail, q);
266 GNUNET_SERVER_notify_transmit_ready (tc->client, msize,
267 GNUNET_TIME_UNIT_FOREVER_REL,
268 &transmit_to_client_callback, tc);
269 GNUNET_assert (tc->th != NULL);
274 * Called whenever a client is disconnected. Frees our
275 * resources associated with that client.
278 * @param client identification of the client
281 client_disconnect_notification (void *cls, struct GNUNET_SERVER_Client *client)
283 struct TransportClient *tc;
284 struct ClientMessageQueueEntry *mqe;
288 tc = lookup_client (client);
292 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
293 "Client %X disconnected, cleaning up.\n", tc);
295 while (NULL != (mqe = tc->message_queue_head))
297 GNUNET_CONTAINER_DLL_remove (tc->message_queue_head, tc->message_queue_tail,
302 GNUNET_CONTAINER_DLL_remove (clients_head, clients_tail, tc);
305 GNUNET_CONNECTION_notify_transmit_ready_cancel (tc->th);
308 GNUNET_break (0 == tc->message_count);
314 * Function called for each of our connected neighbours. Notify the
315 * client about the existing neighbour.
317 * @param cls the 'struct TransportClient' to notify
318 * @param peer identity of the neighbour
319 * @param ats performance data
320 * @param ats_count number of entries in ats (excluding 0-termination)
323 notify_client_about_neighbour (void *cls,
324 const struct GNUNET_PeerIdentity *peer,
325 const struct GNUNET_TRANSPORT_ATS_Information
326 *ats, uint32_t ats_count)
328 struct TransportClient *tc = cls;
329 struct ConnectInfoMessage *cim;
333 sizeof (struct ConnectInfoMessage) +
334 ats_count * sizeof (struct GNUNET_TRANSPORT_ATS_Information);
335 GNUNET_assert (size < GNUNET_SERVER_MAX_MESSAGE_SIZE);
336 cim = GNUNET_malloc (size);
337 cim->header.size = htons (size);
338 cim->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_CONNECT);
339 cim->ats_count = htonl (ats_count);
341 memcpy (&cim->ats, ats,
342 ats_count * sizeof (struct GNUNET_TRANSPORT_ATS_Information));
343 unicast (tc, &cim->header, GNUNET_NO);
349 * Initialize a normal client. We got a start message from this
350 * client, add him to the list of clients for broadcasting of inbound
354 * @param client the client
355 * @param message the start message that was sent
358 clients_handle_start (void *cls, struct GNUNET_SERVER_Client *client,
359 const struct GNUNET_MessageHeader *message)
361 const struct StartMessage *start;
362 struct TransportClient *tc;
364 tc = lookup_client (client);
368 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
369 "Client %X sent START\n", tc);
371 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
372 "Client %X sent START\n", tc);
376 /* got 'start' twice from the same client, not allowed */
378 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
379 "TransportClient %X ServerClient %X sent multiple START messages\n",
384 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
387 start = (const struct StartMessage *) message;
388 if ((GNUNET_NO != ntohl (start->do_check)) &&
390 memcmp (&start->self, &GST_my_identity,
391 sizeof (struct GNUNET_PeerIdentity))))
393 /* client thinks this is a different peer, reject */
394 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
396 ("Rejecting control connection from peer `%s', which is not me!\n"),
397 GNUNET_i2s (&start->self));
398 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
401 tc = setup_client (client);
403 unicast (tc, GST_hello_get (), GNUNET_NO);
404 GST_neighbours_iterate (¬ify_client_about_neighbour, tc);
405 GNUNET_SERVER_receive_done (client, GNUNET_OK);
410 * Client sent us a HELLO. Process the request.
413 * @param client the client
414 * @param message the HELLO message
417 clients_handle_hello (void *cls, struct GNUNET_SERVER_Client *client,
418 const struct GNUNET_MessageHeader *message)
420 GST_validation_handle_hello (message);
421 GNUNET_SERVER_receive_done (client, GNUNET_OK);
426 * Closure for 'handle_send_transmit_continuation'
428 struct SendTransmitContinuationContext
431 * Client that made the request.
433 struct GNUNET_SERVER_Client *client;
436 * Peer that was the target.
438 struct GNUNET_PeerIdentity target;
443 * Function called after the transmission is done. Notify the client that it is
444 * OK to send the next message.
447 * @param success GNUNET_OK on success, GNUNET_NO on failure, GNUNET_SYSERR if we're not connected
450 handle_send_transmit_continuation (void *cls, int success)
452 struct SendTransmitContinuationContext *stcc = cls;
453 struct SendOkMessage send_ok_msg;
455 send_ok_msg.header.size = htons (sizeof (send_ok_msg));
456 send_ok_msg.header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_OK);
457 send_ok_msg.success = htonl (success);
458 send_ok_msg.latency =
459 GNUNET_TIME_relative_hton (GNUNET_TIME_UNIT_FOREVER_REL);
460 send_ok_msg.peer = stcc->target;
461 GST_clients_unicast (stcc->client, &send_ok_msg.header, GNUNET_NO);
462 GNUNET_SERVER_client_drop (stcc->client);
468 * Client asked for transmission to a peer. Process the request.
471 * @param client the client
472 * @param message the send message that was sent
475 clients_handle_send (void *cls, struct GNUNET_SERVER_Client *client,
476 const struct GNUNET_MessageHeader *message)
478 const struct OutboundMessage *obm;
479 const struct GNUNET_MessageHeader *obmm;
480 struct SendTransmitContinuationContext *stcc;
484 size = ntohs (message->size);
486 sizeof (struct OutboundMessage) + sizeof (struct GNUNET_MessageHeader))
489 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
492 obm = (const struct OutboundMessage *) message;
493 obmm = (const struct GNUNET_MessageHeader *) &obm[1];
494 msize = size - sizeof (struct OutboundMessage);
495 if (msize < sizeof (struct GNUNET_MessageHeader))
498 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
501 GNUNET_STATISTICS_update (GST_stats,
503 ("# bytes payload received for other peers"), msize,
506 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
507 "Received `%s' request from client with target `%4s' and first message of type %u and total size %u\n",
508 "SEND", GNUNET_i2s (&obm->peer), ntohs (obmm->type), msize);
510 if (GNUNET_NO == GST_neighbours_test_connected (&obm->peer))
512 /* not connected, not allowed to send; can happen due to asynchronous operations */
514 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
515 "Could not send message to peer `%s': not connected\n",
516 GNUNET_i2s (&obm->peer));
518 GNUNET_STATISTICS_update (GST_stats,
520 ("# bytes payload dropped (other peer was not connected)"),
522 GNUNET_SERVER_receive_done (client, GNUNET_OK);
525 GNUNET_SERVER_receive_done (client, GNUNET_OK);
526 stcc = GNUNET_malloc (sizeof (struct SendTransmitContinuationContext));
527 stcc->target = obm->peer;
528 stcc->client = client;
529 GNUNET_SERVER_client_keep (client);
530 GST_neighbours_send (&obm->peer, obmm, msize,
531 GNUNET_TIME_relative_ntoh (obm->timeout),
532 &handle_send_transmit_continuation, stcc);
537 * Try to initiate a connection to the given peer if the blacklist
540 * @param cls closure (unused, NULL)
541 * @param peer identity of peer that was tested
542 * @param result GNUNET_OK if the connection is allowed,
546 try_connect_if_allowed (void *cls, const struct GNUNET_PeerIdentity *peer,
549 if (GNUNET_OK != result)
550 return; /* not allowed */
551 GST_neighbours_try_connect (peer);
556 * Handle request connect message
558 * @param cls closure (always NULL)
559 * @param client identification of the client
560 * @param message the actual message
563 clients_handle_request_connect (void *cls, struct GNUNET_SERVER_Client *client,
564 const struct GNUNET_MessageHeader *message)
566 const struct TransportRequestConnectMessage *trcm =
567 (const struct TransportRequestConnectMessage *) message;
569 GNUNET_STATISTICS_update (GST_stats,
571 ("# REQUEST CONNECT messages received"), 1,
574 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
575 "Received a request connect message for peer `%s'\n",
576 GNUNET_i2s (&trcm->peer));
578 (void) GST_blacklist_test_allowed (&trcm->peer, NULL, &try_connect_if_allowed,
580 GNUNET_SERVER_receive_done (client, GNUNET_OK);
585 * Client asked for a quota change for a particular peer. Process the request.
588 * @param client the client
589 * @param message the quota changing message
592 clients_handle_set_quota (void *cls, struct GNUNET_SERVER_Client *client,
593 const struct GNUNET_MessageHeader *message)
595 const struct QuotaSetMessage *qsm;
597 qsm = (const struct QuotaSetMessage *) message;
598 GNUNET_STATISTICS_update (GST_stats,
599 gettext_noop ("# SET QUOTA messages received"), 1,
602 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
603 "Received `%s' request (new quota %u) from client for peer `%4s'\n",
604 "SET_QUOTA", (unsigned int) ntohl (qsm->quota.value__),
605 GNUNET_i2s (&qsm->peer));
607 GST_neighbours_set_incoming_quota (&qsm->peer, qsm->quota);
608 GNUNET_SERVER_receive_done (client, GNUNET_OK);
613 * Take the given address and append it to the set of results sent back to
616 * @param cls the transmission context used ('struct GNUNET_SERVER_TransmitContext*')
617 * @param address the resolved name, NULL to indicate the last response
620 transmit_address_to_client (void *cls, const char *address)
622 struct GNUNET_SERVER_TransmitContext *tc = cls;
626 GNUNET_SERVER_transmit_context_append_data (tc, NULL, 0,
627 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_REPLY);
628 GNUNET_SERVER_transmit_context_run (tc, GNUNET_TIME_UNIT_FOREVER_REL);
631 GNUNET_SERVER_transmit_context_append_data (tc, address, strlen (address) + 1,
632 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_REPLY);
637 * Client asked to resolve an address. Process the request.
640 * @param client the client
641 * @param message the resolution request
644 clients_handle_address_lookup (void *cls, struct GNUNET_SERVER_Client *client,
645 const struct GNUNET_MessageHeader *message)
647 const struct AddressLookupMessage *alum;
648 struct GNUNET_TRANSPORT_PluginFunctions *papi;
649 const char *plugin_name;
651 uint32_t address_len;
653 struct GNUNET_SERVER_TransmitContext *tc;
654 struct GNUNET_TIME_Relative rtimeout;
657 size = ntohs (message->size);
658 if (size < sizeof (struct AddressLookupMessage))
661 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
664 alum = (const struct AddressLookupMessage *) message;
665 address_len = ntohl (alum->addrlen);
666 if (size <= sizeof (struct AddressLookupMessage) + address_len)
669 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
672 address = (const char *) &alum[1];
673 plugin_name = (const char *) &address[address_len];
674 if (plugin_name[size - sizeof (struct AddressLookupMessage) - address_len - 1]
678 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
681 rtimeout = GNUNET_TIME_relative_ntoh (alum->timeout);
682 numeric = ntohl (alum->numeric_only);
683 tc = GNUNET_SERVER_transmit_context_create (client);
684 papi = GST_plugins_find (plugin_name);
687 GNUNET_SERVER_transmit_context_append_data (tc, NULL, 0,
688 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_REPLY);
689 GNUNET_SERVER_transmit_context_run (tc, rtimeout);
692 GNUNET_SERVER_disable_receive_done_warning (client);
693 papi->address_pretty_printer (papi->cls, plugin_name, address, address_len,
694 numeric, rtimeout, &transmit_address_to_client,
700 * Send an address to the client.
702 * @param cls our 'struct GNUNET_SERVER_TransmitContext' (for sending)
703 * @param public_key public key for the peer, never NULL
704 * @param target peer this change is about, never NULL
705 * @param valid_until until what time do we consider the address valid?
706 * @param validation_block is FOREVER if the address is for an unsupported plugin (from PEERINFO)
707 * is ZERO if the address is considered valid (no validation needed)
708 * is a time in the future if we're currently denying re-validation
709 * @param plugin_name name of the plugin
710 * @param plugin_address binary address
711 * @param plugin_address_len length of address
714 send_address_to_client (void *cls,
715 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded
716 *public_key, const struct GNUNET_PeerIdentity *target,
717 struct GNUNET_TIME_Absolute valid_until,
718 struct GNUNET_TIME_Absolute validation_block,
719 const char *plugin_name, const void *plugin_address,
720 size_t plugin_address_len)
722 struct GNUNET_SERVER_TransmitContext *tc = cls;
725 /* FIXME: move to a binary format!!! */
726 GNUNET_asprintf (&addr_buf, "%s --- %s, %s",
727 GST_plugins_a2s (plugin_name, plugin_address,
730 GST_neighbours_test_connected (target)) ? "CONNECTED" :
732 (GNUNET_TIME_absolute_get_remaining (valid_until).rel_value >
733 0) ? "VALIDATED" : "UNVALIDATED");
734 transmit_address_to_client (tc, addr_buf);
735 GNUNET_free (addr_buf);
740 * Client asked to obtain information about a peer's addresses.
741 * Process the request.
742 * FIXME: use better name!
745 * @param client the client
746 * @param message the peer address information request
749 clients_handle_peer_address_lookup (void *cls,
750 struct GNUNET_SERVER_Client *client,
751 const struct GNUNET_MessageHeader *message)
753 const struct PeerAddressLookupMessage *peer_address_lookup;
754 struct GNUNET_SERVER_TransmitContext *tc;
756 peer_address_lookup = (const struct PeerAddressLookupMessage *) message;
757 GNUNET_break (ntohl (peer_address_lookup->reserved) == 0);
758 tc = GNUNET_SERVER_transmit_context_create (client);
759 GST_validation_get_addresses (&peer_address_lookup->peer,
760 &send_address_to_client, tc);
761 GNUNET_SERVER_transmit_context_append_data (tc, NULL, 0,
762 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_REPLY);
763 GNUNET_SERVER_transmit_context_run (tc, GNUNET_TIME_UNIT_FOREVER_REL);
768 * Output the active address of connected neighbours to the given client.
770 * @param cls the 'struct GNUNET_SERVER_TransmitContext' for transmission to the client
771 * @param neighbour identity of the neighbour
772 * @param ats performance data
773 * @param ats_count number of entries in ats (excluding 0-termination)
776 output_addresses (void *cls, const struct GNUNET_PeerIdentity *neighbour,
777 const struct GNUNET_TRANSPORT_ATS_Information *ats,
780 struct GNUNET_SERVER_TransmitContext *tc = cls;
783 /* FIXME: move to a binary format!!! */
784 GNUNET_asprintf (&addr_buf, "%s: %s", GNUNET_i2s (neighbour),
785 GST_plugins_a2s ("FIXME", NULL, 0));
786 transmit_address_to_client (tc, addr_buf);
787 GNUNET_free (addr_buf);
792 * Client asked to obtain information about all actively used addresses.
793 * Process the request. FIXME: use better name!
796 * @param client the client
797 * @param message the peer address information request
800 clients_handle_address_iterate (void *cls, struct GNUNET_SERVER_Client *client,
801 const struct GNUNET_MessageHeader *message)
803 struct GNUNET_SERVER_TransmitContext *tc;
805 GNUNET_SERVER_disable_receive_done_warning (client);
806 tc = GNUNET_SERVER_transmit_context_create (client);
807 GST_neighbours_iterate (&output_addresses, tc);
808 GNUNET_SERVER_transmit_context_append_data (tc, NULL, 0,
809 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_REPLY);
810 GNUNET_SERVER_transmit_context_run (tc, GNUNET_TIME_UNIT_FOREVER_REL);
815 * Start handling requests from clients.
817 * @param server server used to accept clients from.
820 GST_clients_start (struct GNUNET_SERVER_Handle *server)
822 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
823 {&clients_handle_start, NULL,
824 GNUNET_MESSAGE_TYPE_TRANSPORT_START, sizeof (struct StartMessage)},
825 {&clients_handle_hello, NULL,
826 GNUNET_MESSAGE_TYPE_HELLO, 0},
827 {&clients_handle_send, NULL,
828 GNUNET_MESSAGE_TYPE_TRANSPORT_SEND, 0},
829 {&clients_handle_request_connect, NULL,
830 GNUNET_MESSAGE_TYPE_TRANSPORT_REQUEST_CONNECT,
831 sizeof (struct TransportRequestConnectMessage)},
832 {&clients_handle_set_quota, NULL,
833 GNUNET_MESSAGE_TYPE_TRANSPORT_SET_QUOTA, sizeof (struct QuotaSetMessage)},
834 {&clients_handle_address_lookup, NULL,
835 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_LOOKUP, 0},
836 {&clients_handle_peer_address_lookup, NULL,
837 GNUNET_MESSAGE_TYPE_TRANSPORT_PEER_ADDRESS_LOOKUP,
838 sizeof (struct PeerAddressLookupMessage)},
839 {&clients_handle_address_iterate, NULL,
840 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_ITERATE,
841 sizeof (struct GNUNET_MessageHeader)},
842 {&GST_blacklist_handle_init, NULL,
843 GNUNET_MESSAGE_TYPE_TRANSPORT_BLACKLIST_INIT,
844 sizeof (struct GNUNET_MessageHeader)},
845 {&GST_blacklist_handle_reply, NULL,
846 GNUNET_MESSAGE_TYPE_TRANSPORT_BLACKLIST_REPLY,
847 sizeof (struct BlacklistMessage)},
850 GNUNET_SERVER_add_handlers (server, handlers);
851 GNUNET_SERVER_disconnect_notify (server, &client_disconnect_notification,
857 * Stop processing clients.
867 * Broadcast the given message to all of our clients.
869 * @param msg message to broadcast
870 * @param may_drop GNUNET_YES if the message can be dropped
873 GST_clients_broadcast (const struct GNUNET_MessageHeader *msg, int may_drop)
875 struct TransportClient *tc;
877 for (tc = clients_head; tc != NULL; tc = tc->next)
878 unicast (tc, msg, may_drop);
883 * Send the given message to a particular client
885 * @param client target of the message
886 * @param msg message to transmit
887 * @param may_drop GNUNET_YES if the message can be dropped
890 GST_clients_unicast (struct GNUNET_SERVER_Client *client,
891 const struct GNUNET_MessageHeader *msg, int may_drop)
893 struct TransportClient *tc;
895 tc = lookup_client (client);
897 tc = setup_client (client);
898 unicast (tc, msg, may_drop);
902 /* end of file gnunet-service-transport_clients.c */