2 This file is part of GNUnet.
3 (C) 2010,2011 Christian Grothoff (and other contributing authors)
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6 it under the terms of the GNU General Public License as published
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13 General Public License for more details.
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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);
158 tc = GNUNET_malloc (sizeof (struct TransportClient));
160 GNUNET_CONTAINER_DLL_insert (clients_head, clients_tail, tc);
163 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
164 "Client %X connected\n", tc);
171 * Function called to notify a client about the socket being ready to
172 * queue more data. "buf" will be NULL and "size" zero if the socket
173 * was closed for writing in the meantime.
176 * @param size number of bytes available in buf
177 * @param buf where the callee should write the message
178 * @return number of bytes written to buf
181 transmit_to_client_callback (void *cls, size_t size, void *buf)
183 struct TransportClient *tc = cls;
184 struct ClientMessageQueueEntry *q;
185 const struct GNUNET_MessageHeader *msg;
194 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
195 "Transmission to client failed, closing connection.\n");
201 while (NULL != (q = tc->message_queue_head))
203 msg = (const struct GNUNET_MessageHeader *) &q[1];
204 msize = ntohs (msg->size);
205 if (msize + tsize > size)
208 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
209 "Transmitting message of type %u to client %X.\n",
210 ntohs (msg->type), tc);
212 GNUNET_CONTAINER_DLL_remove (tc->message_queue_head, tc->message_queue_tail,
215 memcpy (&cbuf[tsize], msg, msize);
221 GNUNET_assert (msize >= sizeof (struct GNUNET_MessageHeader));
223 GNUNET_SERVER_notify_transmit_ready (tc->client, msize,
224 GNUNET_TIME_UNIT_FOREVER_REL,
225 &transmit_to_client_callback, tc);
226 GNUNET_assert (tc->th != NULL);
233 * Queue the given message for transmission to the given client
235 * @param tc target of the message
236 * @param msg message to transmit
237 * @param may_drop GNUNET_YES if the message can be dropped
240 unicast (struct TransportClient *tc, const struct GNUNET_MessageHeader *msg,
243 struct ClientMessageQueueEntry *q;
246 if ((tc->message_count >= MAX_PENDING) && (GNUNET_YES == may_drop))
248 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
250 ("Dropping message of type %u and size %u, have %u/%u messages pending\n"),
251 ntohs (msg->type), ntohs (msg->size), tc->message_count,
253 GNUNET_STATISTICS_update (GST_stats,
255 ("# messages dropped due to slow client"), 1,
259 msize = ntohs (msg->size);
260 GNUNET_assert (msize >= sizeof (struct GNUNET_MessageHeader));
261 q = GNUNET_malloc (sizeof (struct ClientMessageQueueEntry) + msize);
262 memcpy (&q[1], msg, msize);
263 GNUNET_CONTAINER_DLL_insert_tail (tc->message_queue_head,
264 tc->message_queue_tail, q);
269 GNUNET_SERVER_notify_transmit_ready (tc->client, msize,
270 GNUNET_TIME_UNIT_FOREVER_REL,
271 &transmit_to_client_callback, tc);
272 GNUNET_assert (tc->th != NULL);
277 * Called whenever a client is disconnected. Frees our
278 * resources associated with that client.
281 * @param client identification of the client
284 client_disconnect_notification (void *cls, struct GNUNET_SERVER_Client *client)
286 struct TransportClient *tc;
287 struct ClientMessageQueueEntry *mqe;
291 tc = lookup_client (client);
295 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
296 "Client %X disconnected, cleaning up.\n", tc);
298 while (NULL != (mqe = tc->message_queue_head))
300 GNUNET_CONTAINER_DLL_remove (tc->message_queue_head, tc->message_queue_tail,
305 GNUNET_CONTAINER_DLL_remove (clients_head, clients_tail, tc);
308 GNUNET_CONNECTION_notify_transmit_ready_cancel (tc->th);
311 GNUNET_break (0 == tc->message_count);
317 * Function called for each of our connected neighbours. Notify the
318 * client about the existing neighbour.
320 * @param cls the 'struct TransportClient' to notify
321 * @param peer identity of the neighbour
322 * @param ats performance data
323 * @param ats_count number of entries in ats (excluding 0-termination)
324 * @param transport plugin
325 * @param addr address
326 * @param addrlen address length
329 notify_client_about_neighbour (void *cls,
330 const struct GNUNET_PeerIdentity *peer,
331 const struct GNUNET_TRANSPORT_ATS_Information
332 *ats, uint32_t ats_count,
333 const char * transport,
337 struct TransportClient *tc = cls;
338 struct ConnectInfoMessage *cim;
342 sizeof (struct ConnectInfoMessage) +
343 ats_count * sizeof (struct GNUNET_TRANSPORT_ATS_Information);
344 GNUNET_assert (size < GNUNET_SERVER_MAX_MESSAGE_SIZE);
345 cim = GNUNET_malloc (size);
346 cim->header.size = htons (size);
347 cim->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_CONNECT);
348 cim->ats_count = htonl (ats_count);
350 memcpy (&cim->ats, ats,
351 ats_count * sizeof (struct GNUNET_TRANSPORT_ATS_Information));
352 unicast (tc, &cim->header, GNUNET_NO);
358 * Initialize a normal client. We got a start message from this
359 * client, add him to the list of clients for broadcasting of inbound
363 * @param client the client
364 * @param message the start message that was sent
367 clients_handle_start (void *cls, struct GNUNET_SERVER_Client *client,
368 const struct GNUNET_MessageHeader *message)
370 const struct StartMessage *start;
371 struct TransportClient *tc;
373 tc = lookup_client (client);
377 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
378 "Client %X sent START\n", tc);
380 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
381 "Client %X sent START\n", tc);
385 /* got 'start' twice from the same client, not allowed */
387 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
388 "TransportClient %X ServerClient %X sent multiple START messages\n",
392 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
395 start = (const struct StartMessage *) message;
396 if ((GNUNET_NO != ntohl (start->do_check)) &&
398 memcmp (&start->self, &GST_my_identity,
399 sizeof (struct GNUNET_PeerIdentity))))
401 /* client thinks this is a different peer, reject */
402 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
404 ("Rejecting control connection from peer `%s', which is not me!\n"),
405 GNUNET_i2s (&start->self));
406 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
409 tc = setup_client (client);
411 unicast (tc, GST_hello_get (), GNUNET_NO);
412 GST_neighbours_iterate (¬ify_client_about_neighbour, tc);
413 GNUNET_SERVER_receive_done (client, GNUNET_OK);
418 * Client sent us a HELLO. Process the request.
421 * @param client the client
422 * @param message the HELLO message
425 clients_handle_hello (void *cls, struct GNUNET_SERVER_Client *client,
426 const struct GNUNET_MessageHeader *message)
428 GST_validation_handle_hello (message);
429 GNUNET_SERVER_receive_done (client, GNUNET_OK);
434 * Closure for 'handle_send_transmit_continuation'
436 struct SendTransmitContinuationContext
439 * Client that made the request.
441 struct GNUNET_SERVER_Client *client;
444 * Peer that was the target.
446 struct GNUNET_PeerIdentity target;
451 * Function called after the transmission is done. Notify the client that it is
452 * OK to send the next message.
455 * @param success GNUNET_OK on success, GNUNET_NO on failure, GNUNET_SYSERR if we're not connected
458 handle_send_transmit_continuation (void *cls, int success)
460 struct SendTransmitContinuationContext *stcc = cls;
461 struct SendOkMessage send_ok_msg;
462 struct TransportClient *tc;
464 send_ok_msg.header.size = htons (sizeof (send_ok_msg));
465 send_ok_msg.header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_OK);
466 send_ok_msg.success = htonl (success);
467 send_ok_msg.latency =
468 GNUNET_TIME_relative_hton (GNUNET_TIME_UNIT_FOREVER_REL);
469 send_ok_msg.peer = stcc->target;
470 GST_clients_unicast (stcc->client, &send_ok_msg.header, GNUNET_NO);
471 GNUNET_SERVER_client_drop (stcc->client);
477 * Client asked for transmission to a peer. Process the request.
480 * @param client the client
481 * @param message the send message that was sent
484 clients_handle_send (void *cls, struct GNUNET_SERVER_Client *client,
485 const struct GNUNET_MessageHeader *message)
487 const struct OutboundMessage *obm;
488 const struct GNUNET_MessageHeader *obmm;
489 struct SendTransmitContinuationContext *stcc;
492 struct TransportClient *tc;
494 tc = lookup_client (client);
497 /* client asked for transmission before 'START' */
499 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
503 size = ntohs (message->size);
505 sizeof (struct OutboundMessage) + sizeof (struct GNUNET_MessageHeader))
508 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
511 obm = (const struct OutboundMessage *) message;
512 obmm = (const struct GNUNET_MessageHeader *) &obm[1];
513 msize = size - sizeof (struct OutboundMessage);
514 if (msize < sizeof (struct GNUNET_MessageHeader))
517 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
520 GNUNET_STATISTICS_update (GST_stats,
522 ("# bytes payload received for other peers"), msize,
525 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
526 "Received `%s' request from client with target `%4s' and first message of type %u and total size %u\n",
527 "SEND", GNUNET_i2s (&obm->peer), ntohs (obmm->type), msize);
529 if (GNUNET_NO == GST_neighbours_test_connected (&obm->peer))
531 /* not connected, not allowed to send; can happen due to asynchronous operations */
533 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
534 "Could not send message to peer `%s': not connected\n",
535 GNUNET_i2s (&obm->peer));
537 GNUNET_STATISTICS_update (GST_stats,
539 ("# bytes payload dropped (other peer was not connected)"),
541 GNUNET_SERVER_receive_done (client, GNUNET_OK);
544 GNUNET_SERVER_receive_done (client, GNUNET_OK);
545 stcc = GNUNET_malloc (sizeof (struct SendTransmitContinuationContext));
546 stcc->target = obm->peer;
547 stcc->client = client;
548 GNUNET_SERVER_client_keep (client);
549 GST_neighbours_send (&obm->peer, obmm, msize,
550 GNUNET_TIME_relative_ntoh (obm->timeout),
551 &handle_send_transmit_continuation, stcc);
556 * Try to initiate a connection to the given peer if the blacklist
559 * @param cls closure (unused, NULL)
560 * @param peer identity of peer that was tested
561 * @param result GNUNET_OK if the connection is allowed,
565 try_connect_if_allowed (void *cls, const struct GNUNET_PeerIdentity *peer,
568 if (GNUNET_OK != result)
569 return; /* not allowed */
570 GST_neighbours_try_connect (peer);
575 * Handle request connect message
577 * @param cls closure (always NULL)
578 * @param client identification of the client
579 * @param message the actual message
582 clients_handle_request_connect (void *cls, struct GNUNET_SERVER_Client *client,
583 const struct GNUNET_MessageHeader *message)
585 const struct TransportRequestConnectMessage *trcm =
586 (const struct TransportRequestConnectMessage *) message;
588 GNUNET_STATISTICS_update (GST_stats,
590 ("# REQUEST CONNECT messages received"), 1,
593 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
594 "Received a request connect message for peer `%s'\n",
595 GNUNET_i2s (&trcm->peer));
597 (void) GST_blacklist_test_allowed (&trcm->peer, NULL, &try_connect_if_allowed,
599 GNUNET_SERVER_receive_done (client, GNUNET_OK);
604 * Client asked for a quota change for a particular peer. Process the request.
607 * @param client the client
608 * @param message the quota changing message
611 clients_handle_set_quota (void *cls, struct GNUNET_SERVER_Client *client,
612 const struct GNUNET_MessageHeader *message)
614 const struct QuotaSetMessage *qsm;
616 qsm = (const struct QuotaSetMessage *) message;
617 GNUNET_STATISTICS_update (GST_stats,
618 gettext_noop ("# SET QUOTA messages received"), 1,
621 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
622 "Received `%s' request (new quota %u) from client for peer `%4s'\n",
623 "SET_QUOTA", (unsigned int) ntohl (qsm->quota.value__),
624 GNUNET_i2s (&qsm->peer));
626 GST_neighbours_set_incoming_quota (&qsm->peer, qsm->quota);
627 GNUNET_SERVER_receive_done (client, GNUNET_OK);
632 * Take the given address and append it to the set of results sent back to
635 * @param cls the transmission context used ('struct GNUNET_SERVER_TransmitContext*')
636 * @param address the resolved name, NULL to indicate the last response
639 transmit_address_to_client (void *cls, const char *buf)
641 struct GNUNET_SERVER_TransmitContext *tc = cls;
645 GNUNET_SERVER_transmit_context_append_data (tc, NULL, 0,
646 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_REPLY);
647 GNUNET_SERVER_transmit_context_run (tc, GNUNET_TIME_UNIT_FOREVER_REL);
650 GNUNET_SERVER_transmit_context_append_data (tc, buf, strlen (buf) + 1,
651 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_REPLY);
656 * Take the given address and append it to the set of results sent back to
659 * @param cls the transmission context used ('struct GNUNET_SERVER_TransmitContext*')
660 * @param address the resolved name, NULL to indicate the last response
663 transmit_binary_to_client (void *cls, void *buf, size_t size)
665 struct GNUNET_SERVER_TransmitContext *tc = cls;
669 GNUNET_SERVER_transmit_context_append_data (tc, NULL, 0,
670 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_REPLY);
671 GNUNET_SERVER_transmit_context_run (tc, GNUNET_TIME_UNIT_FOREVER_REL);
674 GNUNET_SERVER_transmit_context_append_data (tc, buf, size,
675 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_REPLY);
680 * Client asked to resolve an address. Process the request.
683 * @param client the client
684 * @param message the resolution request
687 clients_handle_address_lookup (void *cls, struct GNUNET_SERVER_Client *client,
688 const struct GNUNET_MessageHeader *message)
690 const struct AddressLookupMessage *alum;
691 struct GNUNET_TRANSPORT_PluginFunctions *papi;
692 const char *plugin_name;
694 uint32_t address_len;
696 struct GNUNET_SERVER_TransmitContext *tc;
697 struct GNUNET_TIME_Relative rtimeout;
700 size = ntohs (message->size);
701 if (size < sizeof (struct AddressLookupMessage))
704 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
707 alum = (const struct AddressLookupMessage *) message;
708 address_len = ntohl (alum->addrlen);
709 if (size <= sizeof (struct AddressLookupMessage) + address_len)
712 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
715 address = (const char *) &alum[1];
716 plugin_name = (const char *) &address[address_len];
717 if (plugin_name[size - sizeof (struct AddressLookupMessage) - address_len - 1]
721 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
724 rtimeout = GNUNET_TIME_relative_ntoh (alum->timeout);
725 numeric = ntohl (alum->numeric_only);
726 tc = GNUNET_SERVER_transmit_context_create (client);
727 papi = GST_plugins_find (plugin_name);
730 GNUNET_SERVER_transmit_context_append_data (tc, NULL, 0,
731 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_REPLY);
732 GNUNET_SERVER_transmit_context_run (tc, rtimeout);
735 GNUNET_SERVER_disable_receive_done_warning (client);
736 papi->address_pretty_printer (papi->cls, plugin_name, address, address_len,
737 numeric, rtimeout, &transmit_address_to_client,
743 * Send an address to the client.
745 * @param cls our 'struct GNUNET_SERVER_TransmitContext' (for sending)
746 * @param public_key public key for the peer, never NULL
747 * @param target peer this change is about, never NULL
748 * @param valid_until until what time do we consider the address valid?
749 * @param validation_block is FOREVER if the address is for an unsupported plugin (from PEERINFO)
750 * is ZERO if the address is considered valid (no validation needed)
751 * is a time in the future if we're currently denying re-validation
752 * @param plugin_name name of the plugin
753 * @param plugin_address binary address
754 * @param plugin_address_len length of address
757 send_address_to_client (void *cls,
758 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded
759 *public_key, const struct GNUNET_PeerIdentity *target,
760 struct GNUNET_TIME_Absolute valid_until,
761 struct GNUNET_TIME_Absolute validation_block,
762 const char *plugin_name, const void *plugin_address,
763 size_t plugin_address_len)
765 struct GNUNET_SERVER_TransmitContext *tc = cls;
768 /* FIXME: move to a binary format!!! */
769 GNUNET_asprintf (&addr_buf, "%s --- %s, %s",
770 GST_plugins_a2s (plugin_name, plugin_address,
773 GST_neighbours_test_connected (target)) ? "CONNECTED" :
775 (GNUNET_TIME_absolute_get_remaining (valid_until).rel_value >
776 0) ? "VALIDATED" : "UNVALIDATED");
777 transmit_address_to_client (tc, addr_buf);
778 GNUNET_free (addr_buf);
783 * Client asked to obtain information about a peer's addresses.
784 * Process the request.
785 * FIXME: use better name!
788 * @param client the client
789 * @param message the peer address information request
792 clients_handle_peer_address_lookup (void *cls,
793 struct GNUNET_SERVER_Client *client,
794 const struct GNUNET_MessageHeader *message)
796 const struct PeerAddressLookupMessage *peer_address_lookup;
797 struct GNUNET_SERVER_TransmitContext *tc;
799 peer_address_lookup = (const struct PeerAddressLookupMessage *) message;
800 GNUNET_break (ntohl (peer_address_lookup->reserved) == 0);
801 tc = GNUNET_SERVER_transmit_context_create (client);
802 GST_validation_get_addresses (&peer_address_lookup->peer,
803 &send_address_to_client, tc);
804 GNUNET_SERVER_transmit_context_append_data (tc, NULL, 0,
805 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_REPLY);
806 GNUNET_SERVER_transmit_context_run (tc, GNUNET_TIME_UNIT_FOREVER_REL);
811 * Output the active address of connected neighbours to the given client.
813 * @param cls the 'struct GNUNET_SERVER_TransmitContext' for transmission to the client
814 * @param neighbour identity of the neighbour
815 * @param ats performance data
816 * @param ats_count number of entries in ats (excluding 0-termination)
817 * @param transport plugin
818 * @param addr address
819 * @param addrlen address length
822 output_addresses (void *cls, const struct GNUNET_PeerIdentity *peer,
823 const struct GNUNET_TRANSPORT_ATS_Information *ats,
825 const char * transport,
829 struct GNUNET_SERVER_TransmitContext *tc = cls;
830 struct AddressIterateResponseMessage * msg;
834 (sizeof (struct AddressIterateResponseMessage) + strlen(transport) + 1);
835 msg = GNUNET_malloc (size);
836 memcpy (&msg->peer, peer, sizeof (struct GNUNET_PeerIdentity));
837 memcpy (&msg[0], transport, strlen(transport)+1);
838 msg->addrlen = ntohs (addrlen);
839 msg->pluginlen = ntohs (strlen(transport)+1);
841 transmit_binary_to_client (tc, msg, size);
847 * Client asked to obtain information about all actively used addresses.
848 * Process the request. FIXME: use better name!
851 * @param client the client
852 * @param message the peer address information request
855 clients_handle_address_iterate (void *cls, struct GNUNET_SERVER_Client *client,
856 const struct GNUNET_MessageHeader *message)
858 struct GNUNET_SERVER_TransmitContext *tc;
860 GNUNET_SERVER_disable_receive_done_warning (client);
861 tc = GNUNET_SERVER_transmit_context_create (client);
862 GST_neighbours_iterate (&output_addresses, tc);
863 GNUNET_SERVER_transmit_context_append_data (tc, NULL, 0,
864 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_REPLY);
865 GNUNET_SERVER_transmit_context_run (tc, GNUNET_TIME_UNIT_FOREVER_REL);
870 * Start handling requests from clients.
872 * @param server server used to accept clients from.
875 GST_clients_start (struct GNUNET_SERVER_Handle *server)
877 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
878 {&clients_handle_start, NULL,
879 GNUNET_MESSAGE_TYPE_TRANSPORT_START, sizeof (struct StartMessage)},
880 {&clients_handle_hello, NULL,
881 GNUNET_MESSAGE_TYPE_HELLO, 0},
882 {&clients_handle_send, NULL,
883 GNUNET_MESSAGE_TYPE_TRANSPORT_SEND, 0},
884 {&clients_handle_request_connect, NULL,
885 GNUNET_MESSAGE_TYPE_TRANSPORT_REQUEST_CONNECT,
886 sizeof (struct TransportRequestConnectMessage)},
887 {&clients_handle_set_quota, NULL,
888 GNUNET_MESSAGE_TYPE_TRANSPORT_SET_QUOTA, sizeof (struct QuotaSetMessage)},
889 {&clients_handle_address_lookup, NULL,
890 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_LOOKUP, 0},
891 {&clients_handle_peer_address_lookup, NULL,
892 GNUNET_MESSAGE_TYPE_TRANSPORT_PEER_ADDRESS_LOOKUP,
893 sizeof (struct PeerAddressLookupMessage)},
894 {&clients_handle_address_iterate, NULL,
895 GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_ITERATE,
896 sizeof (struct AddressIterateMessage)},
897 {&GST_blacklist_handle_init, NULL,
898 GNUNET_MESSAGE_TYPE_TRANSPORT_BLACKLIST_INIT,
899 sizeof (struct GNUNET_MessageHeader)},
900 {&GST_blacklist_handle_reply, NULL,
901 GNUNET_MESSAGE_TYPE_TRANSPORT_BLACKLIST_REPLY,
902 sizeof (struct BlacklistMessage)},
905 GNUNET_SERVER_add_handlers (server, handlers);
906 GNUNET_SERVER_disconnect_notify (server, &client_disconnect_notification,
912 * Stop processing clients.
922 * Broadcast the given message to all of our clients.
924 * @param msg message to broadcast
925 * @param may_drop GNUNET_YES if the message can be dropped
928 GST_clients_broadcast (const struct GNUNET_MessageHeader *msg, int may_drop)
930 struct TransportClient *tc;
932 for (tc = clients_head; tc != NULL; tc = tc->next)
933 unicast (tc, msg, may_drop);
938 * Send the given message to a particular client
940 * @param client target of the message
941 * @param msg message to transmit
942 * @param may_drop GNUNET_YES if the message can be dropped
945 GST_clients_unicast (struct GNUNET_SERVER_Client *client,
946 const struct GNUNET_MessageHeader *msg, int may_drop)
948 struct TransportClient *tc;
950 tc = lookup_client (client);
952 return; /* client got disconnected in the meantime, drop message */
953 unicast (tc, msg, may_drop);
957 /* end of file gnunet-service-transport_clients.c */