GNUnet  0.10.x
transport_api_core.c
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1 /*
2  This file is part of GNUnet.
3  Copyright (C) 2009-2013, 2016 GNUnet e.V.
4 
5  GNUnet is free software: you can redistribute it and/or modify it
6  under the terms of the GNU Affero General Public License as published
7  by the Free Software Foundation, either version 3 of the License,
8  or (at your option) any later version.
9 
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  Affero General Public License for more details.
14 
15  You should have received a copy of the GNU Affero General Public License
16  along with this program. If not, see <http://www.gnu.org/licenses/>.
17 
18  SPDX-License-Identifier: AGPL3.0-or-later
19 */
20 
26 #include "platform.h"
27 #include "gnunet_util_lib.h"
28 #include "gnunet_constants.h"
29 #include "gnunet_arm_service.h"
30 #include "gnunet_hello_lib.h"
31 #include "gnunet_protocols.h"
33 #include "transport.h"
34 
35 #define LOG(kind, ...) GNUNET_log_from (kind, "transport-api-core", __VA_ARGS__)
36 
41 #define UNREADY_WARN_TIME GNUNET_TIME_UNIT_MINUTES
42 
46 #define STARTING_NEIGHBOURS_SIZE 16
47 
48 
52 struct Neighbour
53 {
58 
62  struct GNUNET_MQ_Handle *mq;
63 
67  struct GNUNET_MQ_Envelope *env;
68 
72  void *handlers_cls;
73 
77  struct GNUNET_PeerIdentity id;
78 
83 
93 
99 
104  unsigned long long traffic_overhead;
105 
109  int is_ready;
110 
114  uint16_t env_size;
115 };
116 
117 
123 {
124 
128  void *cls;
129 
135 
140 
145 
150 
154  struct GNUNET_MQ_Handle *mq;
155 
159  const struct GNUNET_CONFIGURATION_Handle *cfg;
160 
166 
170  struct GNUNET_PeerIdentity self;
171 
176 
180  struct GNUNET_TIME_Relative reconnect_delay;
181 
189  unsigned int rom_pending;
190 
195  int check_self;
196 };
197 
198 
205 static void
207 
208 
216 static struct Neighbour *
218  const struct GNUNET_PeerIdentity *peer)
219 {
221 }
222 
223 
230 static void
231 notify_excess_cb (void *cls)
232 {
233  struct Neighbour *n = cls;
234  struct GNUNET_TRANSPORT_CoreHandle *h = n->h;
235 
237  "Notifying CORE that more bandwidth is available for %s\n",
238  GNUNET_i2s (&n->id));
239 
240  if (NULL != h->neb_cb)
241  h->neb_cb (h->cls, &n->id, n->handlers_cls);
242 }
243 
244 
255 static int
256 neighbour_delete (void *cls, const struct GNUNET_PeerIdentity *key, void *value)
257 {
259  struct Neighbour *n = value;
260 
262  "Dropping entry for neighbour `%s'.\n",
263  GNUNET_i2s (key));
265  if (NULL != handle->nd_cb)
266  handle->nd_cb (handle->cls, &n->id, n->handlers_cls);
267  if (NULL != n->timeout_task)
268  {
270  n->timeout_task = NULL;
271  }
272  if (NULL != n->env)
273  {
275  n->env = NULL;
276  }
277  GNUNET_MQ_destroy (n->mq);
278  GNUNET_assert (NULL == n->mq);
279  GNUNET_assert (
280  GNUNET_YES ==
282  GNUNET_free (n);
283  return GNUNET_YES;
284 }
285 
286 
296 static void
297 mq_error_handler (void *cls, enum GNUNET_MQ_Error error)
298 {
300 
302  "Error receiving from transport service (%d), disconnecting temporarily.\n",
303  error);
305 }
306 
307 
315 static int
316 check_hello (void *cls, const struct GNUNET_MessageHeader *msg)
317 {
318  struct GNUNET_PeerIdentity me;
319 
320  if (GNUNET_OK !=
321  GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *) msg, &me))
322  {
323  GNUNET_break (0);
324  return GNUNET_SYSERR;
325  }
326  return GNUNET_OK;
327 }
328 
329 
336 static void
337 handle_hello (void *cls, const struct GNUNET_MessageHeader *msg)
338 {
339  /* we do not care => FIXME: signal in options to NEVER send HELLOs! */
340 }
341 
342 
351 static void
353 {
354  struct Neighbour *n = cls;
355 
356  n->timeout_task = NULL;
357  n->is_ready = GNUNET_YES;
359 }
360 
361 
370 static void
371 notify_send_done (void *cls)
372 {
373  struct Neighbour *n = cls;
374  struct GNUNET_TIME_Relative delay;
375 
376  n->timeout_task = NULL;
377  if (NULL != n->env)
378  {
380  n->env_size + n->traffic_overhead);
381  n->env = NULL;
382  n->traffic_overhead = 0;
383  }
385  if (0 == delay.rel_value_us)
386  {
387  n->is_ready = GNUNET_YES;
389  return;
390  }
392  /* cannot send even a small message without violating
393  quota, wait a before allowing MQ to send next message */
394  n->timeout_task =
396 }
397 
398 
409 static void
411  const struct GNUNET_MessageHeader *msg,
412  void *impl_state)
413 {
414  struct Neighbour *n = impl_state;
415  struct GNUNET_TRANSPORT_CoreHandle *h = n->h;
416  struct OutboundMessage *obm;
417  uint16_t msize;
418 
420  msize = ntohs (msg->size);
421  if (msize >= GNUNET_MAX_MESSAGE_SIZE - sizeof (*obm))
422  {
423  GNUNET_break (0);
425  return;
426  }
427  GNUNET_assert (NULL == n->env);
428  n->env =
430  {
431  struct GNUNET_MQ_Envelope *env;
432 
434  obm->priority = htonl ((uint32_t) GNUNET_MQ_env_get_options (env));
435  }
437  GNUNET_TIME_UNIT_MINUTES); /* FIXME: to be removed */
438  obm->peer = n->id;
439  GNUNET_assert (NULL == n->timeout_task);
440  n->is_ready = GNUNET_NO;
441  n->env_size = ntohs (msg->size);
443  GNUNET_MQ_send (h->mq, n->env);
445  "Queued message of type %u for neighbour `%s'.\n",
446  ntohs (msg->type),
447  GNUNET_i2s (&n->id));
448 }
449 
450 
458 static void
459 mq_destroy_impl (struct GNUNET_MQ_Handle *mq, void *impl_state)
460 {
461  struct Neighbour *n = impl_state;
462 
463  GNUNET_assert (mq == n->mq);
464  n->mq = NULL;
465 }
466 
467 
475 static void
476 mq_cancel_impl (struct GNUNET_MQ_Handle *mq, void *impl_state)
477 {
478  struct Neighbour *n = impl_state;
479 
481  if (NULL != n->env)
482  {
484  n->env = NULL;
485  }
486 
487  n->is_ready = GNUNET_YES;
488 }
489 
490 
499 static void
500 peer_mq_error_handler (void *cls, enum GNUNET_MQ_Error error)
501 {
502  /* struct Neighbour *n = cls; */
503 
504  GNUNET_break_op (0);
505 }
506 
507 
514 static void
516 {
517  struct Neighbour *n = cls;
518  struct GNUNET_TIME_Relative delay;
519 
520  if (NULL == n->timeout_task)
521  return;
525 }
526 
527 
534 static void
535 handle_connect (void *cls, const struct ConnectInfoMessage *cim)
536 {
538  struct Neighbour *n;
539 
541  "Receiving CONNECT message for `%s' with quota %u\n",
542  GNUNET_i2s (&cim->id),
543  ntohl (cim->quota_out.value__));
544  n = neighbour_find (h, &cim->id);
545  if (NULL != n)
546  {
547  GNUNET_break (0); /* FIXME: this assertion seems to fail sometimes!? */
549  return;
550  }
551  n = GNUNET_new (struct Neighbour);
552  n->id = cim->id;
553  n->h = h;
554  n->is_ready = GNUNET_YES;
555  n->traffic_overhead = 0;
558  n,
562  n);
565  h->neighbours,
566  &n->id,
567  n,
569 
574  n,
575  h->handlers,
577  n);
578  if (NULL != h->nc_cb)
579  {
580  n->handlers_cls = h->nc_cb (h->cls, &n->id, n->mq);
582  }
583 }
584 
585 
592 static void
593 handle_disconnect (void *cls, const struct DisconnectInfoMessage *dim)
594 {
596  struct Neighbour *n;
597 
598  GNUNET_break (ntohl (dim->reserved) == 0);
600  "Receiving DISCONNECT message for `%s'.\n",
601  GNUNET_i2s (&dim->peer));
602  n = neighbour_find (h, &dim->peer);
603  if (NULL == n)
604  {
605  GNUNET_break (0);
607  return;
608  }
609  GNUNET_assert (GNUNET_YES == neighbour_delete (h, &dim->peer, n));
610 }
611 
612 
619 static void
620 handle_send_ok (void *cls, const struct SendOkMessage *okm)
621 {
623  struct Neighbour *n;
624  uint32_t bytes_msg;
625  uint32_t bytes_physical;
626 
627  bytes_msg = ntohl (okm->bytes_msg);
628  bytes_physical = ntohl (okm->bytes_physical);
630  "Receiving SEND_OK message, transmission to %s %s.\n",
631  GNUNET_i2s (&okm->peer),
632  ntohl (okm->success) == GNUNET_OK ? "succeeded" : "failed");
633  n = neighbour_find (h, &okm->peer);
634  if (NULL == n)
635  {
636  /* We should never get a 'SEND_OK' for a peer that we are not
637  connected to */
638  GNUNET_break (0);
640  return;
641  }
642  if (bytes_physical > bytes_msg)
643  {
645  "Overhead for %u byte message was %u\n",
646  bytes_msg,
647  bytes_physical - bytes_msg);
648  n->traffic_overhead += bytes_physical - bytes_msg;
649  }
650 }
651 
652 
659 static int
660 check_recv (void *cls, const struct InboundMessage *im)
661 {
662  const struct GNUNET_MessageHeader *imm;
663  uint16_t size;
664 
665  size = ntohs (im->header.size) - sizeof (*im);
666  if (size < sizeof (struct GNUNET_MessageHeader))
667  {
668  GNUNET_break (0);
669  return GNUNET_SYSERR;
670  }
671  imm = (const struct GNUNET_MessageHeader *) &im[1];
672  if (ntohs (imm->size) != size)
673  {
674  GNUNET_break (0);
675  return GNUNET_SYSERR;
676  }
677  return GNUNET_OK;
678 }
679 
680 
687 static void
688 handle_recv (void *cls, const struct InboundMessage *im)
689 {
691  const struct GNUNET_MessageHeader *imm =
692  (const struct GNUNET_MessageHeader *) &im[1];
693  struct Neighbour *n;
694 
696  "Received message of type %u with %u bytes from `%s'.\n",
697  (unsigned int) ntohs (imm->type),
698  (unsigned int) ntohs (imm->size),
699  GNUNET_i2s (&im->peer));
700  n = neighbour_find (h, &im->peer);
701  if (NULL == n)
702  {
703  GNUNET_break (0);
705  return;
706  }
707  h->rom_pending++;
708  GNUNET_MQ_inject_message (n->mq, imm);
709 }
710 
711 
718 static void
719 handle_set_quota (void *cls, const struct QuotaSetMessage *qm)
720 {
722  struct Neighbour *n;
723 
725  "Receiving SET_QUOTA message for `%s' with quota %u\n",
726  GNUNET_i2s (&qm->peer),
727  ntohl (qm->quota.value__));
728  n = neighbour_find (h, &qm->peer);
729  if (NULL == n)
730  {
731  GNUNET_break (
732  0); /* FIXME: julius reports this assertion fails sometimes? */
734  return;
735  }
737 }
738 
739 
745 static void
746 reconnect (void *cls)
747 {
749  struct GNUNET_MQ_MessageHandler handlers[] =
750  {GNUNET_MQ_hd_var_size (hello,
752  struct GNUNET_MessageHeader,
753  h),
754  GNUNET_MQ_hd_fixed_size (connect,
756  struct ConnectInfoMessage,
757  h),
760  struct DisconnectInfoMessage,
761  h),
762  GNUNET_MQ_hd_fixed_size (send_ok,
764  struct SendOkMessage,
765  h),
766  GNUNET_MQ_hd_var_size (recv,
768  struct InboundMessage,
769  h),
770  GNUNET_MQ_hd_fixed_size (set_quota,
772  struct QuotaSetMessage,
773  h),
775  struct GNUNET_MQ_Envelope *env;
776  struct StartMessage *s;
777  uint32_t options;
778 
779  h->reconnect_task = NULL;
780  LOG (GNUNET_ERROR_TYPE_DEBUG, "Connecting to transport service.\n");
781  GNUNET_assert (NULL == h->mq);
782  h->mq =
783  GNUNET_CLIENT_connect (h->cfg, "transport", handlers, &mq_error_handler, h);
784  if (NULL == h->mq)
785  return;
787  options = 0;
788  if (h->check_self)
789  options |= 1;
790  if (NULL != h->handlers)
791  options |= 2;
792  s->options = htonl (options);
793  s->self = h->self;
794  GNUNET_MQ_send (h->mq, env);
795 }
796 
797 
804 static void
806 {
807  GNUNET_assert (NULL == h->reconnect_task);
808  /* Forget about all neighbours that we used to be connected to */
810  if (NULL != h->mq)
811  {
812  GNUNET_MQ_destroy (h->mq);
813  h->mq = NULL;
814  }
816  "Scheduling task to reconnect to transport service in %s.\n",
818  h->reconnect_task =
821 }
822 
823 
831 struct GNUNET_MQ_Handle *
833  const struct GNUNET_PeerIdentity *peer)
834 {
835  struct Neighbour *n;
836 
837  n = neighbour_find (handle, peer);
838  if (NULL == n)
839  return NULL;
840  return n->mq;
841 }
842 
843 
860  const struct GNUNET_PeerIdentity *self,
861  const struct GNUNET_MQ_MessageHandler *handlers,
862  void *cls,
866 {
868  unsigned int i;
869 
871  if (NULL != self)
872  {
873  h->self = *self;
874  h->check_self = GNUNET_YES;
875  }
876  h->cfg = cfg;
877  h->cls = cls;
878  h->nc_cb = nc;
879  h->nd_cb = nd;
880  h->neb_cb = neb;
882  if (NULL != handlers)
883  {
884  for (i = 0; NULL != handlers[i].cb; i++)
885  ;
888  handlers,
889  i * sizeof (struct GNUNET_MQ_MessageHandler));
890  }
891  LOG (GNUNET_ERROR_TYPE_DEBUG, "Connecting to transport service\n");
892  reconnect (h);
893  if (NULL == h->mq)
894  {
896  GNUNET_free (h);
897  return NULL;
898  }
899  h->neighbours =
901  return h;
902 }
903 
904 
911 void
913 {
914  LOG (GNUNET_ERROR_TYPE_DEBUG, "Transport disconnect called!\n");
915  /* this disconnects all neighbours... */
916  if (NULL == handle->reconnect_task)
918  /* and now we stop trying to connect again... */
919  if (NULL != handle->reconnect_task)
920  {
922  handle->reconnect_task = NULL;
923  }
925  handle->neighbours = NULL;
926  GNUNET_free_non_null (handle->handlers);
927  handle->handlers = NULL;
928  GNUNET_free (handle);
929 }
930 
931 
952 void
953 GNUNET_TRANSPORT_core_receive_continue (struct GNUNET_TRANSPORT_CoreHandle *ch,
954  const struct GNUNET_PeerIdentity *pid)
955 {
956  struct RecvOkMessage *rom;
957  struct GNUNET_MQ_Envelope *env;
958 
959  GNUNET_assert (ch->rom_pending > 0);
960  ch->rom_pending--;
962  rom->increase_window_delta = htonl (1);
963  rom->peer = *pid;
964  GNUNET_MQ_send (ch->mq, env);
965 }
966 
967 
968 /* end of transport_api_core.c */
struct GNUNET_MQ_MessageHandler * handlers
Functions to call for received data (template for new message queues).
A connected controller which is not our child.
struct GNUNET_PeerIdentity id
Identity of the new neighbour.
Definition: transport.h:145
int GNUNET_HELLO_get_id(const struct GNUNET_HELLO_Message *hello, struct GNUNET_PeerIdentity *peer)
Get the peer identity from a HELLO message.
Definition: hello.c:668
static struct GNUNET_CADET_Channel * ch
Channel handle.
Definition: gnunet-cadet.c:117
static void disconnect_and_schedule_reconnect(struct GNUNET_TRANSPORT_CoreHandle *h)
Function that will schedule the job that will try to connect us again to the client.
static struct GNUNET_CONTAINER_MultiPeerMap * neighbours
Map from PIDs to struct Neighbour entries.
A HELLO message is used to exchange information about transports with other peers.
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
int GNUNET_BANDWIDTH_tracker_consume(struct GNUNET_BANDWIDTH_Tracker *av, ssize_t size)
Notify the tracker that a certain number of bytes of bandwidth have been consumed.
Definition: bandwidth.c:402
void * cls
Closure for the callbacks.
uint64_t rel_value_us
The actual value.
#define LOG(kind,...)
Message used to notify the transport API that it can send another message to the transport service...
Definition: transport.h:271
uint32_t priority
An enum GNUNET_MQ_PriorityPreferences in NBO.
Definition: transport.h:307
common internal definitions for transport service
void * handlers_cls
Closure for mq handlers.
GNUNET_TRANSPORT_NotifyDisconnect nd_cb
function to call on disconnect events
struct GNUNET_GETOPT_CommandLineOption options[]
Definition: 002.c:5
#define GNUNET_MESSAGE_TYPE_TRANSPORT_RECV_OK
Message telling transport to limit its receive rate.
struct GNUNET_MQ_Handle * GNUNET_CLIENT_connect(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *service_name, const struct GNUNET_MQ_MessageHandler *handlers, GNUNET_MQ_ErrorHandler error_handler, void *error_handler_cls)
Create a message queue to connect to a GNUnet service.
Definition: client.c:901
static void handle_disconnect(void *cls, const struct DisconnectInfoMessage *dim)
Function we use for handling incoming disconnect messages.
#define GNUNET_MQ_msg_nested_mh(mvar, type, mh)
Allocate a GNUNET_MQ_Envelope, and append a payload message after the given message struct...
GNUNET_MQ_Error
Error codes for the queue.
struct GNUNET_TRANSPORT_CoreHandle * h
Overall transport handle.
#define GNUNET_TIME_UNIT_MINUTES
One minute.
void GNUNET_BANDWIDTH_tracker_update_quota(struct GNUNET_BANDWIDTH_Tracker *av, struct GNUNET_BANDWIDTH_Value32NBO bytes_per_second_limit)
Update quota of bandwidth tracker.
Definition: bandwidth.c:526
struct GNUNET_MQ_Handle * mq
Active message queue for the peer.
const struct GNUNET_CONFIGURATION_Handle * cfg
My configuration.
struct GNUNET_PeerIdentity peer
Which peer should receive the message?
Definition: transport.h:321
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
struct GNUNET_BANDWIDTH_Value32NBO quota_out
Current outbound quota for this peer.
Definition: transport.h:139
struct GNUNET_MQ_Handle * mq
My client connection to the transport service.
struct GNUNET_PeerIdentity peer
Which peer can CORE handle more from now?
Definition: transport.h:288
static void notify_excess_cb(void *cls)
Function called by the bandwidth tracker if we have excess bandwidth.
GNUNET_TRANSPORT_NotifyExcessBandwidth neb_cb
function to call on excess bandwidth events
static int neighbour_delete(void *cls, const struct GNUNET_PeerIdentity *key, void *value)
Iterator over hash map entries, for deleting state of a neighbour.
static void handle_set_quota(void *cls, const struct QuotaSetMessage *qm)
Function we use for handling incoming set quota messages.
GNUNET_TRANSPORT_NotifyConnect nc_cb
function to call on connect events
#define GNUNET_MQ_hd_fixed_size(name, code, str, ctx)
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
Struct to track available bandwidth.
#define GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT
Bandwidth (in/out) to assume initially (before either peer has communicated any particular preference...
int GNUNET_CONTAINER_multipeermap_remove(struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key, const void *value)
Remove the given key-value pair from the map.
#define GNUNET_NO
Definition: gnunet_common.h:81
uint32_t increase_window_delta
Number of messages by which to increase the window, greater or equal to one.
Definition: transport.h:283
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:78
#define GNUNET_free_non_null(ptr)
Free the memory pointed to by ptr if ptr is not NULL.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
struct GNUNET_PeerIdentity self
Identity we think we have.
Definition: transport.h:110
void *(* GNUNET_TRANSPORT_NotifyConnect)(void *cls, const struct GNUNET_PeerIdentity *peer, struct GNUNET_MQ_Handle *mq)
Function called to notify transport users that another peer connected to us.
static void mq_error_handler(void *cls, enum GNUNET_MQ_Error error)
Generic error handler, called with the appropriate error code and the same closure specified at the c...
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
struct GNUNET_PeerIdentity self
Peer identity as assumed by this process, or all zeros.
struct GNUNET_CONTAINER_MultiPeerMap * GNUNET_CONTAINER_multipeermap_create(unsigned int len, int do_not_copy_keys)
Create a multi peer map (hash map for public keys of peers).
static void notify_send_done_fin(void *cls)
A message from the handler&#39;s message queue to a neighbour was transmitted.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
struct GNUNET_CONTAINER_MultiPeerMap * neighbours
Hash map of the current connected neighbours of this peer.
void GNUNET_CONTAINER_multipeermap_destroy(struct GNUNET_CONTAINER_MultiPeerMap *map)
Destroy a hash map.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_SEND
Request to TRANSPORT to transmit a message.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_CONNECT
Message from TRANSPORT notifying about a client that connected to us.
struct GNUNET_TIME_Relative reconnect_delay
Delay until we try to reconnect.
struct GNUNET_TRANSPORT_CoreHandle * GNUNET_TRANSPORT_core_connect(const struct GNUNET_CONFIGURATION_Handle *cfg, const struct GNUNET_PeerIdentity *self, const struct GNUNET_MQ_MessageHandler *handlers, void *cls, GNUNET_TRANSPORT_NotifyConnect nc, GNUNET_TRANSPORT_NotifyDisconnect nd, GNUNET_TRANSPORT_NotifyExcessBandwidth neb)
Connect to the transport service.
uint32_t value__
The actual value (bytes per second).
#define STARTING_NEIGHBOURS_SIZE
How large to start with for the hashmap of neighbours.
enum GNUNET_MQ_PriorityPreferences GNUNET_MQ_env_get_options(struct GNUNET_MQ_Envelope *env)
Get performance preferences set for this envelope.
Definition: mq.c:1020
unsigned int rom_pending
Internal counter to check how many more receive OK messages this CORE service is allowed to send in t...
uint16_t env_size
Size of the message in env.
void GNUNET_MQ_set_handlers_closure(struct GNUNET_MQ_Handle *mq, void *handlers_cls)
Change the closure argument in all of the handlers of the mq.
Definition: mq.c:583
struct GNUNET_PeerIdentity peer
About which peer are we talking here?
Definition: transport.h:196
void(* GNUNET_TRANSPORT_NotifyDisconnect)(void *cls, const struct GNUNET_PeerIdentity *peer, void *handler_cls)
Function called to notify transport users that another peer disconnected from us. ...
static void peer_mq_error_handler(void *cls, enum GNUNET_MQ_Error error)
We had an error processing a message we forwarded from a peer to the CORE service.
uint16_t success
GNUNET_OK if the transmission succeeded, GNUNET_SYSERR if it failed (i.e.
Definition: transport.h:244
void GNUNET_MQ_impl_send_in_flight(struct GNUNET_MQ_Handle *mq)
Call the send notification for the current message, but do not try to send the next message until #gn...
Definition: mq.c:519
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed(struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1246
uint16_t type
The type of the message (GNUNET_MESSAGE_TYPE_XXXX), in big-endian format.
static int check_hello(void *cls, const struct GNUNET_MessageHeader *msg)
Function we use for checking incoming HELLO messages.
uint32_t reserved
Reserved, always zero.
Definition: transport.h:164
struct GNUNET_MQ_Handle * GNUNET_MQ_queue_for_callbacks(GNUNET_MQ_SendImpl send, GNUNET_MQ_DestroyImpl destroy, GNUNET_MQ_CancelImpl cancel, void *impl_state, const struct GNUNET_MQ_MessageHandler *handlers, GNUNET_MQ_ErrorHandler error_handler, void *cls)
Create a message queue for the specified handlers.
Definition: mq.c:552
#define GNUNET_memcpy(dst, src, n)
static struct GNUNET_CADET_MessageHandler handlers[]
Handlers, for diverse services.
void GNUNET_MQ_notify_sent(struct GNUNET_MQ_Envelope *ev, GNUNET_SCHEDULER_TaskCallback cb, void *cb_cls)
Call a callback once the envelope has been sent, that is, sending it can not be canceled anymore...
Definition: mq.c:774
static char * value
Value of the record to add/remove.
struct GNUNET_SCHEDULER_Task * timeout_task
Task to trigger MQ when we have enough bandwidth for the next transmission.
#define GNUNET_MQ_hd_var_size(name, code, str, ctx)
static void handle_recv(void *cls, const struct InboundMessage *im)
Function we use for handling incoming messages.
#define GNUNET_break_op(cond)
Use this for assertion violations caused by other peers (i.e.
static void mq_cancel_impl(struct GNUNET_MQ_Handle *mq, void *impl_state)
Implementation function that cancels the currently sent message.
static void handle_hello(void *cls, const struct GNUNET_MessageHeader *msg)
Function we use for handling incoming HELLO messages.
const char * GNUNET_STRINGS_relative_time_to_string(struct GNUNET_TIME_Relative delta, int do_round)
Give relative time in human-readable fancy format.
Definition: strings.c:727
uint32_t bytes_physical
Size of message sent over wire.
Definition: transport.h:255
uint32_t options
0: no options 1: The self field should be checked 2: this client is interested in payload traffic ...
Definition: transport.h:104
#define GNUNET_new_array(n, type)
Allocate a size n array with structs or unions of the given type.
static void disconnect(struct GNUNET_PEERSTORE_Handle *h)
Disconnect from the peerstore service.
Message from the transport service to the library informing about neighbors.
Definition: transport.h:118
static struct GNUNET_DNS_Handle * handle
Handle to transport service.
struct GNUNET_TIME_RelativeNBO timeout
Allowed delay.
Definition: transport.h:315
int check_self
Should we check that self matches what the service thinks? (if GNUNET_NO, then self is all zeros!)...
GNUNET_MQ_MessageCallback cb
Callback, called every time a new message of the specified type has been receied. ...
#define GNUNET_MESSAGE_TYPE_TRANSPORT_START
Message from the core saying that the transport server should start giving it messages.
void GNUNET_MQ_inject_message(struct GNUNET_MQ_Handle *mq, const struct GNUNET_MessageHeader *mh)
Call the message message handler that was registered for the type of the given message in the given m...
Definition: mq.c:202
Internal representation of the hash map.
struct GNUNET_PeerIdentity id
Identity of this neighbour.
static void reconnect(void *cls)
Try again to connect to transport service.
static void reconnect_task(void *cls)
Re-establish the connection to the ATS service.
Message used to set a particular bandwidth quota.
Definition: transport.h:180
void GNUNET_BANDWIDTH_tracker_init2(struct GNUNET_BANDWIDTH_Tracker *av, GNUNET_BANDWIDTH_TrackerUpdateCallback update_cb, void *update_cb_cls, struct GNUNET_BANDWIDTH_Value32NBO bytes_per_second_limit, uint32_t max_carry_s, GNUNET_BANDWIDTH_ExcessNotificationCallback excess_cb, void *excess_cb_cls)
Initialize bandwidth tracker.
Definition: bandwidth.c:259
Message handler for a specific message type.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_DISCONNECT
Message from TRANSPORT notifying about a client that disconnected from us.
static struct GNUNET_CONFIGURATION_Handle * cfg
Our configuration.
Definition: gnunet-arm.c:104
Node in the heap.
Message used to notify the transport service about a message to be transmitted to another peer...
Definition: transport.h:296
#define MAX_BANDWIDTH_CARRY_S
Number of seconds that available bandwidth carries over (can accumulate).
struct GNUNET_TIME_Relative GNUNET_BANDWIDTH_tracker_get_delay(struct GNUNET_BANDWIDTH_Tracker *av, size_t size)
Compute how long we should wait until consuming size bytes of bandwidth in order to stay within the g...
Definition: bandwidth.c:458
static int check_recv(void *cls, const struct InboundMessage *im)
Function we use for checking incoming "inbound" messages.
There must only be one value per key; storing a value should fail if a value under the same key alrea...
Message from the transport service to the library asking to check if both processes agree about this ...
Definition: transport.h:91
struct GNUNET_TESTBED_Peer * peer
The peer associated with this model.
struct GNUNET_HashCode key
The key used in the DHT.
#define GNUNET_SYSERR
Definition: gnunet_common.h:79
static struct GNUNET_PEERINFO_NotifyContext * nc
Iterator context.
static unsigned int size
Size of the "table".
Definition: peer.c:67
struct GNUNET_PeerIdentity peer
Which peer sent the message?
Definition: transport.h:215
struct GNUNET_TIME_RelativeNBO GNUNET_TIME_relative_hton(struct GNUNET_TIME_Relative a)
Convert relative time to network byte order.
Definition: time.c:622
Message from the transport service to the library informing about disconnects.
Definition: transport.h:153
static struct Neighbour * neighbour_find(struct GNUNET_TRANSPORT_CoreHandle *h, const struct GNUNET_PeerIdentity *peer)
Get the neighbour list entry for the given peer.
int is_ready
Is this peer currently ready to receive a message?
uint16_t bytes_msg
Size of message sent.
Definition: transport.h:249
#define GNUNET_TIME_STD_BACKOFF(r)
Perform our standard exponential back-off calculation, starting at 1 ms and then going by a factor of...
#define GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_OK
Confirmation from TRANSPORT that message for transmission has been queued (and that the next message ...
unsigned long long traffic_overhead
Sending consumed more bytes on wire than payload was announced This overhead is added to the delay of...
static void handle_send_ok(void *cls, const struct SendOkMessage *okm)
Function we use for handling incoming send-ok messages.
#define GNUNET_TIME_UNIT_ZERO
Relative time zero.
#define GNUNET_MAX_MESSAGE_SIZE
Largest supported message (to be precise, one byte more than the largest possible message...
struct GNUNET_BANDWIDTH_Tracker out_tracker
Outbound bandwidh tracker.
static void mq_destroy_impl(struct GNUNET_MQ_Handle *mq, void *impl_state)
Handle destruction of a message queue.
static void notify_send_done(void *cls)
A message from the handler&#39;s message queue to a neighbour was transmitted.
Handle to a message queue.
Definition: mq.c:85
int GNUNET_CONTAINER_multipeermap_put(struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key, void *value, enum GNUNET_CONTAINER_MultiHashMapOption opt)
Store a key-value pair in the map.
int GNUNET_CONTAINER_multipeermap_iterate(struct GNUNET_CONTAINER_MultiPeerMap *map, GNUNET_CONTAINER_PeerMapIterator it, void *it_cls)
Iterate over all entries in the map.
struct GNUNET_CONTAINER_HeapNode * hn
Entry in our readyness heap (which is sorted by next_ready value).
The identity of the host (wraps the signing key of the peer).
Message used to notify the transport API that it can send another message to the transport service...
Definition: transport.h:223
struct GNUNET_PeerIdentity peer
Which peer can send more now?
Definition: transport.h:262
static void handle_connect(void *cls, const struct ConnectInfoMessage *cim)
Function we use for handling incoming connect messages.
void(* GNUNET_TRANSPORT_NotifyExcessBandwidth)(void *cls, const struct GNUNET_PeerIdentity *neighbour, void *handlers_cls)
Function called if we have "excess" bandwidth to a peer.
configuration data
Definition: configuration.c:85
#define GNUNET_MESSAGE_TYPE_TRANSPORT_RECV
Message from TRANSPORT notifying about a message that was received.
struct GNUNET_BANDWIDTH_Value32NBO quota
Quota.
Definition: transport.h:191
struct GNUNET_PeerIdentity peer
Who got disconnected?
Definition: transport.h:169
void GNUNET_BANDWIDTH_tracker_notification_stop(struct GNUNET_BANDWIDTH_Tracker *av)
Stop notifying about tracker updates and excess notifications.
Definition: bandwidth.c:325
void * GNUNET_CONTAINER_multipeermap_get(const struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key)
Given a key find a value in the map matching the key.
void GNUNET_TRANSPORT_core_disconnect(struct GNUNET_TRANSPORT_CoreHandle *handle)
Disconnect from the transport service.
Entry in list of pending tasks.
Definition: scheduler.c:134
struct GNUNET_SCHEDULER_Task * reconnect_task
ID of the task trying to reconnect to the service.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_SET_QUOTA
Message telling transport to limit its receive rate.
Header for all communications.
struct GNUNET_MQ_Envelope * GNUNET_MQ_get_current_envelope(struct GNUNET_MQ_Handle *mq)
Function to obtain the current envelope from within GNUNET_MQ_SendImpl implementations.
Definition: mq.c:974
void GNUNET_MQ_destroy(struct GNUNET_MQ_Handle *mq)
Destroy the message queue.
Definition: mq.c:824
#define GNUNET_YES
Definition: gnunet_common.h:80
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:353
static void outbound_bw_tracker_update(void *cls)
The outbound quota has changed in a way that may require us to reset the timeout. ...
struct GNUNET_MQ_Handle * GNUNET_TRANSPORT_core_get_mq(struct GNUNET_TRANSPORT_CoreHandle *handle, const struct GNUNET_PeerIdentity *peer)
Checks if a given peer is connected to us and get the message queue.
struct GNUNET_MQ_Envelope * env
Envelope with the message we are currently transmitting (or NULL).
struct GNUNET_MessageHeader header
Type will be GNUNET_MESSAGE_TYPE_TRANSPORT_RECV.
Definition: transport.h:210
#define GNUNET_MESSAGE_TYPE_HELLO
HELLO message with friend only flag used for communicating peer addresses.
static void mq_send_impl(struct GNUNET_MQ_Handle *mq, const struct GNUNET_MessageHeader *msg, void *impl_state)
Implement sending functionality of a message queue.
Handle for the transport service (includes all of the state for the transport service).
void GNUNET_MQ_impl_send_continue(struct GNUNET_MQ_Handle *mq)
Call the send implementation for the next queued message, if any.
Definition: mq.c:486
void GNUNET_MQ_send_cancel(struct GNUNET_MQ_Envelope *ev)
Cancel sending the message.
Definition: mq.c:916
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
#define GNUNET_MQ_handler_end()
End-marker for the handlers array.
Message used to notify the transport API about a message received from the network.
Definition: transport.h:204
#define GNUNET_free(ptr)
Wrapper around free.
Time for relative time used by GNUnet, in microseconds.
struct GNUNET_PeerIdentity pid
Which peer is this about?
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:965