2 This file is part of GNUnet.
3 (C) 2009, 2010 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 mesh/mesh_api.c
23 * @brief mesh service; API for the Mesh. This is used to talk to arbitrary peers
24 * as of 2011-01Jan-06 this is a mockup.
25 * @author Philipp Tölke
28 #include <gnunet_constants.h>
29 #include <gnunet_mesh_service.h>
30 #include <gnunet_core_service.h>
31 #include <gnunet_container_lib.h>
32 #include <gnunet_applications.h>
36 uint32_t id GNUNET_PACKED;
37 struct GNUNET_PeerIdentity initiator;
38 struct GNUNET_PeerIdentity target;
41 static uint32_t current_id = 0;
45 struct GNUNET_MessageHeader hdr;
47 /* followed by another GNUNET_MessageHeader */
53 GNUNET_CONNECTION_TransmitReadyNotify notify;
54 struct GNUNET_MESH_Tunnel *tunnel;
57 struct GNUNET_MESH_Tunnel
59 /* The other peer this tunnel leads to; just unicast for the moment! */
60 struct GNUNET_PeerIdentity peer;
64 /* The handlers and cls for outbound tunnels. Are NULL for inbound tunnels. */
65 GNUNET_MESH_TunnelDisconnectHandler disconnect_handler;
66 GNUNET_MESH_TunnelConnectHandler connect_handler;
69 struct GNUNET_MESH_Handle* handle;
71 /* The application-type requested for this tunnel. Is only needed for pending
74 uint16_t application_type;
76 struct GNUNET_MESH_TransmitHandle* notify_handle;
78 /* The context of the receive-function. */
82 struct tunnel_list_element
84 struct GNUNET_MESH_Tunnel tunnel;
85 struct tunnel_list_element *next, *prev;
90 struct tunnel_list_element *head, *tail;
93 struct type_list_element
95 GNUNET_MESH_ApplicationType type;
96 struct type_list_element *next, *prev;
99 struct peer_list_element
101 struct GNUNET_PeerIdentity peer;
103 /* list of application-types */
104 struct type_list_element *type_head, *type_tail;
106 struct GNUNET_TRANSPORT_ATS_Information atsi;
107 struct peer_list_element *next, *prev;
112 struct peer_list_element *head, *tail;
115 struct GNUNET_MESH_Handle
117 struct GNUNET_CORE_Handle *core;
118 struct GNUNET_MESH_MessageHandler *handlers;
119 struct GNUNET_PeerIdentity myself;
120 unsigned int connected_to_core;
121 struct peer_list connected_peers;
122 struct tunnel_list established_tunnels;
123 struct tunnel_list pending_tunnels;
124 struct tunnel_list pending_by_type_tunnels;
126 GNUNET_MESH_TunnelEndHandler *cleaner;
127 size_t hello_message_size;
128 uint16_t *hello_message;
132 send_end_connect(void* cls,
133 const struct GNUNET_SCHEDULER_TaskContext* tc)
135 if ( (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
138 struct GNUNET_MESH_Tunnel* tunnel = cls;
140 tunnel->connect_handler(tunnel->handler_cls, NULL, NULL);
144 send_self_connect(void* cls,
145 const struct GNUNET_SCHEDULER_TaskContext* tc)
147 if ( (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
150 struct GNUNET_MESH_Tunnel* tunnel = cls;
152 tunnel->connect_handler(tunnel->handler_cls, &tunnel->handle->myself, NULL);
153 GNUNET_SCHEDULER_add_now(send_end_connect, tunnel);
157 call_connect_handler (void *cls,
158 const struct GNUNET_SCHEDULER_TaskContext *tc)
160 if ( (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
163 struct GNUNET_MESH_Tunnel *tunnel = cls;
165 tunnel->connect_handler (tunnel->handler_cls, &tunnel->peer,
167 GNUNET_SCHEDULER_add_now (send_end_connect, tunnel);
171 core_startup (void *cls,
172 struct GNUNET_CORE_Handle *core __attribute__((unused)),
173 const struct GNUNET_PeerIdentity *my_identity,
174 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *publicKey __attribute__((unused)))
176 struct GNUNET_MESH_Handle *handle = cls;
177 memcpy (&handle->myself, my_identity, sizeof (struct GNUNET_PeerIdentity));
178 handle->connected_to_core = GNUNET_YES;
182 send_hello_message (void *cls, size_t size, void *buf)
184 if (cls == NULL) return 0;
186 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Sending hello\n");
188 struct GNUNET_MESH_Handle *handle = cls;
189 struct GNUNET_MessageHeader *hdr = buf;
191 size_t sent = sizeof(struct GNUNET_MessageHeader) + handle->hello_message_size;
193 if (sent > size) return 0;
195 hdr->type = htons(GNUNET_MESSAGE_TYPE_MESH_HELLO);
196 hdr->size = htons(size);
198 memcpy(hdr+1, handle->hello_message, handle->hello_message_size);
204 * Core calls this if we are connected to a new peer.
206 * The peer is added to the connected_peers-list.
210 core_connect (void *cls,
211 const struct GNUNET_PeerIdentity *peer,
212 const struct GNUNET_TRANSPORT_ATS_Information *atsi)
214 struct GNUNET_MESH_Handle *handle = cls;
216 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Core tells us we are connected to peer %s\n", GNUNET_i2s(peer));
218 /* Send a hello to this peer */
219 GNUNET_CORE_notify_transmit_ready(handle->core,
222 GNUNET_TIME_UNIT_SECONDS,
224 sizeof(struct GNUNET_MessageHeader) + handle->hello_message_size,
228 /* put the new peer into the list of connected peers */
229 struct peer_list_element *element =
230 GNUNET_malloc (sizeof (struct peer_list_element));
231 memcpy (&element->peer, peer, sizeof (struct GNUNET_PeerIdentity));
234 memcpy (&element->atsi, atsi,
235 sizeof (struct GNUNET_TRANSPORT_ATS_Information));
237 GNUNET_CONTAINER_DLL_insert_after (handle->connected_peers.head,
238 handle->connected_peers.tail,
239 handle->connected_peers.tail, element);
241 struct tunnel_list_element *tunnel = handle->pending_tunnels.head;
242 while (tunnel != NULL)
245 memcmp (&tunnel->tunnel.peer, peer,
246 sizeof (struct GNUNET_PeerIdentity)))
248 struct tunnel_list_element *next = tunnel->next;
249 GNUNET_CONTAINER_DLL_remove (handle->pending_tunnels.head,
250 handle->pending_tunnels.tail, tunnel);
251 GNUNET_CONTAINER_DLL_insert_after (handle->established_tunnels.head,
252 handle->established_tunnels.tail,
253 handle->established_tunnels.tail,
255 tunnel->tunnel.connect_handler (tunnel->tunnel.handler_cls,
257 GNUNET_SCHEDULER_add_now(send_end_connect, tunnel);
261 tunnel = tunnel->next;
266 * Core calls this if we disconnect a peer
268 * Remove this peer from the list of connected peers
269 * Close all tunnels this peer belongs to
272 core_disconnect (void *cls, const struct GNUNET_PeerIdentity *peer)
274 struct GNUNET_MESH_Handle *handle = cls;
276 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Core tells us we are no longer connected to peer %s\n", GNUNET_i2s(peer));
278 struct peer_list_element *element = handle->connected_peers.head;
279 while (element != NULL)
282 memcmp (&element->peer, peer, sizeof (struct GNUNET_PeerIdentity)))
284 element = element->next;
288 GNUNET_CONTAINER_DLL_remove (handle->connected_peers.head,
289 handle->connected_peers.tail, element);
290 while (element->type_head != NULL)
292 struct type_list_element* tail = element->type_tail;
293 GNUNET_CONTAINER_DLL_remove(element->type_head, element->type_tail, tail);
296 GNUNET_free (element);
299 struct tunnel_list_element *telement = handle->established_tunnels.head;
300 while (telement != NULL)
303 memcmp (&telement->tunnel.peer, peer,
304 sizeof (struct GNUNET_PeerIdentity)))
306 /* disconnect tunnels */
307 /* outbound tunnels */
308 if (telement->tunnel.connect_handler != NULL && NULL != telement->tunnel.disconnect_handler)
309 telement->tunnel.disconnect_handler (telement->tunnel.handler_cls,
311 /* inbound tunnels */
312 else if (NULL != handle->cleaner)
313 handle->cleaner (handle->cls, &telement->tunnel,
314 &telement->tunnel.ctx);
316 struct tunnel_list_element *next = telement->next;
317 GNUNET_CONTAINER_DLL_remove (handle->established_tunnels.head,
318 handle->established_tunnels.tail,
320 GNUNET_free (telement);
325 telement = telement->next;
331 * Receive a message from core.
332 * This is a hello-message, containing the application-types the other peer can receive
335 receive_hello (void *cls,
336 const struct GNUNET_PeerIdentity *other,
337 const struct GNUNET_MessageHeader *message,
338 const struct GNUNET_TRANSPORT_ATS_Information *atsi)
340 struct GNUNET_MESH_Handle *handle = cls;
341 uint16_t *num = (uint16_t *) (message + 1);
342 GNUNET_MESH_ApplicationType *ports = (GNUNET_MESH_ApplicationType*) (num + 1);
345 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "The peer %s tells us he supports %d application-types.\n", GNUNET_i2s(other), ntohs(*num));
347 struct peer_list_element *element = handle->connected_peers.head;
348 while (element != NULL)
351 memcmp (&element->peer, other, sizeof (struct GNUNET_PeerIdentity)))
353 element = element->next;
356 GNUNET_assert(NULL != element);
358 for (i = 0; i < ntohs(*num); i++)
360 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "The peer %s newly supports the application-type %d\n", GNUNET_i2s(other), ntohs(ports[i]));
361 if (GNUNET_APPLICATION_TYPE_END == ntohs(ports[i])) continue;
362 struct type_list_element* new_type = GNUNET_malloc(sizeof *new_type);
363 new_type->type = (GNUNET_MESH_ApplicationType)ntohs (ports[i]);
364 GNUNET_CONTAINER_DLL_insert(element->type_head, element->type_tail, new_type);
367 struct type_list_element *type;
368 for (type = element->type_head; type != NULL; type = type->next)
370 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "The peer %s supports the application-type %d\n", GNUNET_i2s(other), type->type);
373 struct tunnel_list_element *tunnel = handle->pending_by_type_tunnels.head;
374 while (tunnel != NULL)
376 struct tunnel_list_element *next = tunnel->next;
377 for (i = 0; i < ntohs(*num); i++)
379 if (ntohs (ports[i]) == tunnel->tunnel.application_type)
381 GNUNET_CONTAINER_DLL_remove (handle->pending_tunnels.head,
382 handle->pending_tunnels.tail,
384 GNUNET_CONTAINER_DLL_insert_after (handle->established_tunnels.
386 handle->established_tunnels.
388 handle->established_tunnels.
390 tunnel->tunnel.connect_handler (tunnel->tunnel.handler_cls,
391 &tunnel->tunnel.peer, atsi);
392 GNUNET_SCHEDULER_add_now (send_end_connect, tunnel);
396 if (ntohs (ports[i]) == tunnel->tunnel.application_type)
399 tunnel = tunnel->next;
405 * Receive a message from core.
408 core_receive (void *cls,
409 const struct GNUNET_PeerIdentity *other,
410 const struct GNUNET_MessageHeader *message,
411 const struct GNUNET_TRANSPORT_ATS_Information *atsi)
413 struct GNUNET_MESH_Handle *handle = cls;
414 struct tunnel_message *tmessage = (struct tunnel_message *) message;
415 struct GNUNET_MessageHeader *rmessage =
416 (struct GNUNET_MessageHeader *) (tmessage + 1);
418 struct GNUNET_MESH_MessageHandler *handler;
420 for (handler = handle->handlers; handler->callback != NULL; handler++)
422 if ( (ntohs (rmessage->type) == handler->type)
423 && ( (handler->expected_size == 0)
424 || (handler->expected_size == ntohs (rmessage->size))) )
430 /* handler->callback handles this message */
432 /* If no handler was found, drop the message but keep the channel open */
433 if (handler->callback == NULL)
435 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Received message of type %d from peer %s; dropping it.\n",
436 ntohs(rmessage->type), GNUNET_i2s(other));
440 struct tunnel_list_element *tunnel = handle->established_tunnels.head;
442 while (tunnel != NULL)
444 if (tunnel->tunnel.id.id == tmessage->id.id &&
446 memcmp (&tmessage->id.initiator, &tunnel->tunnel.id.initiator,
447 sizeof (struct GNUNET_PeerIdentity)))
449 memcmp (&tmessage->id.target, &tunnel->tunnel.id.target,
450 sizeof (struct GNUNET_PeerIdentity))))
452 tunnel = tunnel->next;
455 /* if no tunnel was found: create a new inbound tunnel */
458 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "New inbound tunnel from peer %s; first message has type %d.\n",
459 GNUNET_i2s(other), ntohs(rmessage->type));
460 tunnel = GNUNET_malloc (sizeof (struct tunnel_list_element));
461 tunnel->tunnel.connect_handler = NULL;
462 tunnel->tunnel.disconnect_handler = NULL;
463 tunnel->tunnel.handler_cls = NULL;
464 tunnel->tunnel.ctx = NULL;
465 tunnel->tunnel.handle = handle;
466 memcpy (&tunnel->tunnel.peer, other,
467 sizeof (struct GNUNET_PeerIdentity));
468 memcpy (&tunnel->tunnel.id, &tmessage->id, sizeof (struct tunnel_id));
470 GNUNET_CONTAINER_DLL_insert_after (handle->established_tunnels.head,
471 handle->established_tunnels.tail,
472 handle->established_tunnels.tail,
476 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Inbound message from peer %s; type %d.\n",
477 GNUNET_i2s(other), ntohs(rmessage->type));
479 return handler->callback (handle->cls, &tunnel->tunnel,
480 &tunnel->tunnel.ctx, other, rmessage, atsi);
483 struct GNUNET_MESH_Tunnel *
484 GNUNET_MESH_peer_request_connect_by_type (struct GNUNET_MESH_Handle *handle,
485 struct GNUNET_TIME_Relative timeout,
486 GNUNET_MESH_ApplicationType application_type,
487 GNUNET_MESH_TunnelConnectHandler
489 GNUNET_MESH_TunnelDisconnectHandler
493 /* Look in the list of connected peers */
494 struct peer_list_element *element = handle->connected_peers.head;
495 while (element != NULL)
497 struct type_list_element* i;
498 for (i = element->type_head; i != NULL; i = i->next)
499 if (application_type == i->type)
500 return GNUNET_MESH_peer_request_connect_all (handle, timeout, 1,
505 element = element->next;
508 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Trying to connect by tupe %d.\n", application_type);
510 /* Put into pending list */
511 struct tunnel_list_element *tunnel =
512 GNUNET_malloc (sizeof (struct tunnel_list_element));
514 tunnel->tunnel.connect_handler = connect_handler;
515 tunnel->tunnel.disconnect_handler = disconnect_handler;
516 tunnel->tunnel.handler_cls = handler_cls;
517 tunnel->tunnel.ctx = NULL;
518 tunnel->tunnel.handle = handle;
519 memcpy (&tunnel->tunnel.id.initiator, &handle->myself,
520 sizeof (struct GNUNET_PeerIdentity));
521 tunnel->tunnel.id.id = current_id++;
522 tunnel->tunnel.application_type = application_type;
524 GNUNET_CONTAINER_DLL_insert_after (handle->pending_by_type_tunnels.head,
525 handle->pending_by_type_tunnels.tail,
526 handle->pending_by_type_tunnels.tail,
528 return &tunnel->tunnel;
533 struct GNUNET_MESH_Tunnel *
534 GNUNET_MESH_peer_request_connect_all (struct GNUNET_MESH_Handle *handle,
535 struct GNUNET_TIME_Relative timeout,
536 unsigned int num_peers,
537 const struct GNUNET_PeerIdentity *peers,
538 GNUNET_MESH_TunnelConnectHandler
540 GNUNET_MESH_TunnelDisconnectHandler
541 disconnect_handler, void *handler_cls)
546 struct tunnel_list_element *tunnel =
547 GNUNET_malloc (sizeof (struct tunnel_list_element));
549 tunnel->tunnel.connect_handler = connect_handler;
550 tunnel->tunnel.disconnect_handler = disconnect_handler;
551 tunnel->tunnel.handler_cls = handler_cls;
552 tunnel->tunnel.ctx = NULL;
553 tunnel->tunnel.handle = handle;
554 memcpy (&tunnel->tunnel.id.initiator, &handle->myself,
555 sizeof (struct GNUNET_PeerIdentity));
556 memcpy (&tunnel->tunnel.id.target, peers,
557 sizeof (struct GNUNET_PeerIdentity));
558 tunnel->tunnel.id.id = current_id++;
559 memcpy (&tunnel->tunnel.peer, peers, sizeof(struct GNUNET_PeerIdentity));
561 struct peer_list_element *element = handle->connected_peers.head;
562 while (element != NULL)
565 memcmp (&element->peer, peers, sizeof (struct GNUNET_PeerIdentity)))
567 element = element->next;
572 /* we are connected to this peer */
573 GNUNET_CONTAINER_DLL_insert_after (handle->established_tunnels.head,
574 handle->established_tunnels.tail,
575 handle->established_tunnels.tail,
577 GNUNET_SCHEDULER_add_now(call_connect_handler, tunnel);
580 memcmp (peers, &handle->myself,
581 sizeof (struct GNUNET_PeerIdentity)))
583 /* we are the peer */
584 GNUNET_CONTAINER_DLL_insert_after (handle->established_tunnels.head,
585 handle->established_tunnels.tail,
586 handle->established_tunnels.tail,
588 GNUNET_SCHEDULER_add_now(send_self_connect, tunnel);
592 /* we are not connected to this peer */
593 GNUNET_CONTAINER_DLL_insert_after (handle->pending_tunnels.head,
594 handle->pending_tunnels.tail,
595 handle->pending_tunnels.tail,
597 (void) GNUNET_CORE_peer_request_connect (handle->core,
602 return &tunnel->tunnel;
605 const struct GNUNET_PeerIdentity*
606 GNUNET_MESH_get_peer(const struct GNUNET_MESH_Tunnel* tunnel)
608 return &tunnel->peer;
612 core_notify(void* cls, size_t size, void* buf)
614 struct notify_cls *ncls = cls;
615 struct GNUNET_MESH_Tunnel *tunnel = ncls->tunnel;
616 tunnel->notify_handle = NULL;
617 struct tunnel_message* message = buf;
618 void* cbuf = (void*) &message[1];
619 GNUNET_assert(NULL != ncls->notify);
621 size_t sent = ncls->notify(ncls->notify_cls, size - sizeof(struct tunnel_message), cbuf);
625 if (0 == sent) return 0;
627 sent += sizeof(struct tunnel_message);
629 message->hdr.type = htons(GNUNET_MESSAGE_TYPE_MESH);
630 message->hdr.size = htons(sent);
631 memcpy(&message->id, &tunnel->id, sizeof(struct tunnel_id));
637 * Ask the mesh to call "notify" once it is ready to transmit the
638 * given number of bytes to the specified "target". If we are not yet
639 * connected to the specified peer, a call to this function will cause
640 * us to try to establish a connection.
642 * @param tunnel tunnel to use for transmission
643 * @param cork is corking allowed for this transmission?
644 * @param priority how important is the message?
645 * @param maxdelay how long can the message wait?
646 * @param target destination for the message, NULL for multicast to all tunnel targets
647 * @param notify_size how many bytes of buffer space does notify want?
648 * @param notify function to call when buffer space is available;
649 * will be called with NULL on timeout or if the overall queue
650 * for this peer is larger than queue_size and this is currently
651 * the message with the lowest priority
652 * @param notify_cls closure for notify
653 * @return non-NULL if the notify callback was queued,
654 * NULL if we can not even queue the request (insufficient
655 * memory); if NULL is returned, "notify" will NOT be called.
657 struct GNUNET_MESH_TransmitHandle *
658 GNUNET_MESH_notify_transmit_ready (struct
666 const struct GNUNET_PeerIdentity *target
667 __attribute__ ((unused)),
669 GNUNET_CONNECTION_TransmitReadyNotify
670 notify, void *notify_cls)
672 if (NULL != tunnel->notify_handle)
678 struct notify_cls *cls = GNUNET_malloc (sizeof (struct notify_cls));
679 cls->notify_cls = notify_cls;
680 GNUNET_assert (NULL != notify);
681 cls->notify = notify;
682 cls->tunnel = tunnel;
684 tunnel->notify_handle = (struct GNUNET_MESH_TransmitHandle *)
685 GNUNET_CORE_notify_transmit_ready (tunnel->handle->core, cork, priority,
686 maxdelay, &tunnel->peer,
688 sizeof (struct tunnel_message),
689 &core_notify, (void *) cls);
691 return tunnel->notify_handle;
695 GNUNET_MESH_notify_transmit_ready_cancel (struct GNUNET_MESH_TransmitHandle
698 GNUNET_CORE_notify_transmit_ready_cancel ((struct GNUNET_CORE_TransmitHandle
702 void build_hello_message(struct GNUNET_MESH_Handle* handle,
703 const GNUNET_MESH_ApplicationType *stypes)
706 const GNUNET_MESH_ApplicationType *t;
708 for (t = stypes; *t != GNUNET_APPLICATION_TYPE_END; t++, num++);
710 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "I can handle %d app-types.\n", num);
712 handle->hello_message_size = sizeof(uint16_t) + /* For the number of types */
713 num * sizeof(GNUNET_MESH_ApplicationType); /* For the types */
715 uint16_t *nums = GNUNET_malloc(handle->hello_message_size);
716 GNUNET_MESH_ApplicationType *types = (GNUNET_MESH_ApplicationType*)(nums + 1);
721 for (i = 0; i < num; i++)
723 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "I can handle the app-type %d\n", stypes[i]);
724 types[i] = htons(stypes[i]);
727 handle->hello_message = nums;
731 struct GNUNET_MESH_Handle *
732 GNUNET_MESH_connect (const struct
733 GNUNET_CONFIGURATION_Handle
735 GNUNET_MESH_TunnelEndHandler
737 const struct GNUNET_MESH_MessageHandler *handlers,
738 const GNUNET_MESH_ApplicationType *stypes)
740 struct GNUNET_MESH_Handle *ret =
741 GNUNET_malloc (sizeof (struct GNUNET_MESH_Handle));
743 ret->connected_to_core = GNUNET_NO;
744 ret->connected_peers.head = NULL;
745 ret->connected_peers.tail = NULL;
746 ret->cleaner = cleaner;
749 const struct GNUNET_MESH_MessageHandler *it;
750 unsigned int len = 1;
751 for (it = handlers; it->callback != NULL; it++)
757 GNUNET_malloc (len * sizeof (struct GNUNET_MESH_MessageHandler));
758 memset(ret->handlers, 0, len * sizeof(struct GNUNET_MESH_MessageHandler));
759 memcpy (ret->handlers, handlers,
760 len * sizeof (struct GNUNET_MESH_MessageHandler));
762 build_hello_message(ret, stypes);
764 static const struct GNUNET_CORE_MessageHandler core_handlers[] = {
765 {&core_receive, GNUNET_MESSAGE_TYPE_MESH, 0},
766 {&receive_hello, GNUNET_MESSAGE_TYPE_MESH_HELLO, 0},
770 ret->core = GNUNET_CORE_connect (cfg,
778 GNUNET_NO, NULL, GNUNET_NO, core_handlers);
783 GNUNET_MESH_disconnect (struct GNUNET_MESH_Handle *handle)
785 GNUNET_free (handle->handlers);
786 GNUNET_free (handle->hello_message);
787 GNUNET_CORE_disconnect (handle->core);
789 struct peer_list_element *element = handle->connected_peers.head;
790 while (element != NULL)
792 struct peer_list_element *next = element->next;
793 while (element->type_head != NULL)
795 struct type_list_element* tail = element->type_tail;
796 GNUNET_CONTAINER_DLL_remove(element->type_head, element->type_tail, tail);
799 GNUNET_free (element);
803 struct tunnel_list_element *tunnel = handle->pending_tunnels.head;
804 while (tunnel != NULL)
806 struct tunnel_list_element *next = tunnel->next;
807 GNUNET_free (tunnel);
810 tunnel = handle->established_tunnels.head;;
811 while (tunnel != NULL)
813 struct tunnel_list_element *next = tunnel->next;
814 GNUNET_free (tunnel);
818 GNUNET_free (handle);
821 /* end of mesh_api.c */