2 This file is part of GNUnet.
3 (C) 2010,2011 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file transport/gnunet-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 */
497 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
498 "Could not send message to peer `%s': not connected\n", GNUNET_i2s (&obm->peer));
500 GNUNET_STATISTICS_update (GST_stats,
502 ("# bytes payload dropped (other peer was not connected)"),
504 GNUNET_SERVER_receive_done (client, GNUNET_OK);
507 GNUNET_SERVER_receive_done (client, GNUNET_OK);
508 stcc = GNUNET_malloc (sizeof (struct SendTransmitContinuationContext));
509 stcc->target = obm->peer;
510 stcc->client = client;
511 GNUNET_SERVER_client_keep (client);
512 GST_neighbours_send (&obm->peer, obmm, msize,
513 GNUNET_TIME_relative_ntoh (obm->timeout),
514 &handle_send_transmit_continuation, stcc);
519 * Try to initiate a connection to the given peer if the blacklist
522 * @param cls closure (unused, NULL)
523 * @param peer identity of peer that was tested
524 * @param result GNUNET_OK if the connection is allowed,
528 try_connect_if_allowed (void *cls, const struct GNUNET_PeerIdentity *peer,
531 if (GNUNET_OK != result)
532 return; /* not allowed */
533 GST_neighbours_try_connect (peer);
538 * Handle request connect message
540 * @param cls closure (always NULL)
541 * @param client identification of the client
542 * @param message the actual message
545 clients_handle_request_connect (void *cls, struct GNUNET_SERVER_Client *client,
546 const struct GNUNET_MessageHeader *message)
548 const struct TransportRequestConnectMessage *trcm =
549 (const struct TransportRequestConnectMessage *) message;
551 GNUNET_STATISTICS_update (GST_stats,
553 ("# REQUEST CONNECT messages received"), 1,
556 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
557 "Received a request connect message for peer `%s'\n",
558 GNUNET_i2s (&trcm->peer));
560 (void) GST_blacklist_test_allowed (&trcm->peer, NULL, &try_connect_if_allowed,
562 GNUNET_SERVER_receive_done (client, GNUNET_OK);
567 * Client asked for a quota change for a particular peer. Process the request.
570 * @param client the client
571 * @param message the quota changing message
574 clients_handle_set_quota (void *cls, struct GNUNET_SERVER_Client *client,
575 const struct GNUNET_MessageHeader *message)
577 const struct QuotaSetMessage *qsm;
579 qsm = (const struct QuotaSetMessage *) message;
580 GNUNET_STATISTICS_update (GST_stats,
581 gettext_noop ("# SET QUOTA messages received"), 1,
584 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
585 "Received `%s' request (new quota %u) from client for peer `%4s'\n",
586 "SET_QUOTA", (unsigned int) ntohl (qsm->quota.value__),
587 GNUNET_i2s (&qsm->peer));
589 GST_neighbours_set_incoming_quota (&qsm->peer, qsm->quota);
590 GNUNET_SERVER_receive_done (client, GNUNET_OK);
595 * Take the given address and append it to the set of results sent back to
598 * @param cls the transmission context used ('struct GNUNET_SERVER_TransmitContext*')
599 * @param address the resolved name, NULL to indicate the last response
602 transmit_address_to_client (void *cls, const char *address)
604 struct GNUNET_SERVER_TransmitContext *tc = cls;
608 GNUNET_SERVER_transmit_context_append_data (tc, NULL, 0,
609 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_REPLY);
610 GNUNET_SERVER_transmit_context_run (tc, GNUNET_TIME_UNIT_FOREVER_REL);
613 GNUNET_SERVER_transmit_context_append_data (tc, address, strlen (address) + 1,
614 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_REPLY);
619 * Client asked to resolve an address. Process the request.
622 * @param client the client
623 * @param message the resolution request
626 clients_handle_address_lookup (void *cls, struct GNUNET_SERVER_Client *client,
627 const struct GNUNET_MessageHeader *message)
629 const struct AddressLookupMessage *alum;
630 struct GNUNET_TRANSPORT_PluginFunctions *papi;
631 const char *plugin_name;
633 uint32_t address_len;
635 struct GNUNET_SERVER_TransmitContext *tc;
636 struct GNUNET_TIME_Relative rtimeout;
639 size = ntohs (message->size);
640 if (size < sizeof (struct AddressLookupMessage))
643 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
646 alum = (const struct AddressLookupMessage *) message;
647 address_len = ntohl (alum->addrlen);
648 if (size <= sizeof (struct AddressLookupMessage) + address_len)
651 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
654 address = (const char *) &alum[1];
655 plugin_name = (const char *) &address[address_len];
656 if (plugin_name[size - sizeof (struct AddressLookupMessage) - address_len - 1]
660 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
663 rtimeout = GNUNET_TIME_relative_ntoh (alum->timeout);
664 numeric = ntohl (alum->numeric_only);
665 tc = GNUNET_SERVER_transmit_context_create (client);
666 papi = GST_plugins_find (plugin_name);
669 GNUNET_SERVER_transmit_context_append_data (tc, NULL, 0,
670 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_REPLY);
671 GNUNET_SERVER_transmit_context_run (tc, rtimeout);
674 GNUNET_SERVER_disable_receive_done_warning (client);
675 papi->address_pretty_printer (papi->cls, plugin_name, address, address_len,
676 numeric, rtimeout, &transmit_address_to_client,
682 * Send an address to the client.
684 * @param cls our 'struct GNUNET_SERVER_TransmitContext' (for sending)
685 * @param public_key public key for the peer, never NULL
686 * @param target peer this change is about, never NULL
687 * @param valid_until until what time do we consider the address valid?
688 * @param validation_block is FOREVER if the address is for an unsupported plugin (from PEERINFO)
689 * is ZERO if the address is considered valid (no validation needed)
690 * is a time in the future if we're currently denying re-validation
691 * @param plugin_name name of the plugin
692 * @param plugin_address binary address
693 * @param plugin_address_len length of address
696 send_address_to_client (void *cls,
697 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded
698 *public_key, const struct GNUNET_PeerIdentity *target,
699 struct GNUNET_TIME_Absolute valid_until,
700 struct GNUNET_TIME_Absolute validation_block,
701 const char *plugin_name, const void *plugin_address,
702 size_t plugin_address_len)
704 struct GNUNET_SERVER_TransmitContext *tc = cls;
707 /* FIXME: move to a binary format!!! */
708 GNUNET_asprintf (&addr_buf, "%s --- %s, %s",
709 GST_plugins_a2s (plugin_name, plugin_address,
712 GST_neighbours_test_connected (target)) ? "CONNECTED" :
714 (GNUNET_TIME_absolute_get_remaining (valid_until).rel_value >
715 0) ? "VALIDATED" : "UNVALIDATED");
716 transmit_address_to_client (tc, addr_buf);
717 GNUNET_free (addr_buf);
722 * Client asked to obtain information about a peer's addresses.
723 * Process the request.
724 * FIXME: use better name!
727 * @param client the client
728 * @param message the peer address information request
731 clients_handle_peer_address_lookup (void *cls,
732 struct GNUNET_SERVER_Client *client,
733 const struct GNUNET_MessageHeader *message)
735 const struct PeerAddressLookupMessage *peer_address_lookup;
736 struct GNUNET_SERVER_TransmitContext *tc;
738 peer_address_lookup = (const struct PeerAddressLookupMessage *) message;
739 GNUNET_break (ntohl (peer_address_lookup->reserved) == 0);
740 tc = GNUNET_SERVER_transmit_context_create (client);
741 GST_validation_get_addresses (&peer_address_lookup->peer,
742 &send_address_to_client, tc);
743 GNUNET_SERVER_transmit_context_append_data (tc, NULL, 0,
744 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_REPLY);
745 GNUNET_SERVER_transmit_context_run (tc, GNUNET_TIME_UNIT_FOREVER_REL);
750 * Output the active address of connected neighbours to the given client.
752 * @param cls the 'struct GNUNET_SERVER_TransmitContext' for transmission to the client
753 * @param neighbour identity of the neighbour
754 * @param ats performance data
755 * @param ats_count number of entries in ats (excluding 0-termination)
758 output_addresses (void *cls, const struct GNUNET_PeerIdentity *neighbour,
759 const struct GNUNET_TRANSPORT_ATS_Information *ats,
762 struct GNUNET_SERVER_TransmitContext *tc = cls;
765 /* FIXME: move to a binary format!!! */
766 GNUNET_asprintf (&addr_buf, "%s: %s", GNUNET_i2s (neighbour),
767 GST_plugins_a2s ("FIXME", NULL, 0));
768 transmit_address_to_client (tc, addr_buf);
769 GNUNET_free (addr_buf);
774 * Client asked to obtain information about all actively used addresses.
775 * Process the request. FIXME: use better name!
778 * @param client the client
779 * @param message the peer address information request
782 clients_handle_address_iterate (void *cls, struct GNUNET_SERVER_Client *client,
783 const struct GNUNET_MessageHeader *message)
785 struct GNUNET_SERVER_TransmitContext *tc;
787 GNUNET_SERVER_disable_receive_done_warning (client);
788 tc = GNUNET_SERVER_transmit_context_create (client);
789 GST_neighbours_iterate (&output_addresses, tc);
790 GNUNET_SERVER_transmit_context_append_data (tc, NULL, 0,
791 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_REPLY);
792 GNUNET_SERVER_transmit_context_run (tc, GNUNET_TIME_UNIT_FOREVER_REL);
797 * Start handling requests from clients.
799 * @param server server used to accept clients from.
802 GST_clients_start (struct GNUNET_SERVER_Handle *server)
804 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
805 {&clients_handle_start, NULL,
806 GNUNET_MESSAGE_TYPE_TRANSPORT_START, sizeof (struct StartMessage)},
807 {&clients_handle_hello, NULL,
808 GNUNET_MESSAGE_TYPE_HELLO, 0},
809 {&clients_handle_send, NULL,
810 GNUNET_MESSAGE_TYPE_TRANSPORT_SEND, 0},
811 {&clients_handle_request_connect, NULL,
812 GNUNET_MESSAGE_TYPE_TRANSPORT_REQUEST_CONNECT,
813 sizeof (struct TransportRequestConnectMessage)},
814 {&clients_handle_set_quota, NULL,
815 GNUNET_MESSAGE_TYPE_TRANSPORT_SET_QUOTA, sizeof (struct QuotaSetMessage)},
816 {&clients_handle_address_lookup, NULL,
817 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_LOOKUP, 0},
818 {&clients_handle_peer_address_lookup, NULL,
819 GNUNET_MESSAGE_TYPE_TRANSPORT_PEER_ADDRESS_LOOKUP,
820 sizeof (struct PeerAddressLookupMessage)},
821 {&clients_handle_address_iterate, NULL,
822 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_ITERATE,
823 sizeof (struct GNUNET_MessageHeader)},
824 {&GST_blacklist_handle_init, NULL,
825 GNUNET_MESSAGE_TYPE_TRANSPORT_BLACKLIST_INIT,
826 sizeof (struct GNUNET_MessageHeader)},
827 {&GST_blacklist_handle_reply, NULL,
828 GNUNET_MESSAGE_TYPE_TRANSPORT_BLACKLIST_REPLY,
829 sizeof (struct BlacklistMessage)},
832 GNUNET_SERVER_add_handlers (server, handlers);
833 GNUNET_SERVER_disconnect_notify (server, &client_disconnect_notification,
839 * Stop processing clients.
849 * Broadcast the given message to all of our clients.
851 * @param msg message to broadcast
852 * @param may_drop GNUNET_YES if the message can be dropped
855 GST_clients_broadcast (const struct GNUNET_MessageHeader *msg, int may_drop)
857 struct TransportClient *tc;
859 for (tc = clients_head; tc != NULL; tc = tc->next)
860 unicast (tc, msg, may_drop);
865 * Send the given message to a particular client
867 * @param client target of the message
868 * @param msg message to transmit
869 * @param may_drop GNUNET_YES if the message can be dropped
872 GST_clients_unicast (struct GNUNET_SERVER_Client *client,
873 const struct GNUNET_MessageHeader *msg, int may_drop)
875 struct TransportClient *tc;
877 tc = lookup_client (client);
879 tc = setup_client (client);
880 unicast (tc, msg, may_drop);
884 /* end of file gnunet-service-transport_clients.c */