GNUnet  0.10.x
transport_api2_core.c
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1 /*
2  This file is part of GNUnet.
3  Copyright (C) 2009-2013, 2016, 2018 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 
40 #define STARTING_NEIGHBOURS_SIZE 16
41 
50 #define SEND_WINDOW_SIZE 4
51 
52 
56 struct Neighbour
57 {
58 
63 
68 
73 
78 
82  void *handlers_cls;
83 
88  unsigned int ready_window;
89 
97  int16_t awaiting_done;
98 
102  uint16_t env_size;
103 };
104 
105 
111 {
112 
116  void *cls;
117 
123 
128 
133 
138 
143 
149 
153  struct GNUNET_PeerIdentity self;
154 
159 
163  struct GNUNET_TIME_Relative reconnect_delay;
164 
170 };
171 
172 
179 static void
181 
182 
190 static struct Neighbour *
192  const struct GNUNET_PeerIdentity *peer)
193 {
195 }
196 
197 
208 static int
209 neighbour_delete (void *cls, const struct GNUNET_PeerIdentity *key, void *value)
210 {
212  struct Neighbour *n = value;
213 
215  "Dropping entry for neighbour `%s'.\n",
216  GNUNET_i2s (key));
217  if (NULL != handle->nd_cb)
218  handle->nd_cb (handle->cls, &n->id, n->handlers_cls);
219  if (NULL != n->env)
220  {
222  n->env = NULL;
223  }
224  GNUNET_MQ_destroy (n->mq);
225  GNUNET_assert (NULL == n->mq);
226  GNUNET_assert (
227  GNUNET_YES ==
229  GNUNET_free (n);
230  return GNUNET_YES;
231 }
232 
233 
243 static void
244 mq_error_handler (void *cls, enum GNUNET_MQ_Error error)
245 {
247 
249  "Error receiving from transport service, disconnecting temporarily.\n");
251 }
252 
253 
264 static void
266 {
267  struct Neighbour *n = cls;
268 
270  n->env = NULL;
272 }
273 
274 
281 static void
282 do_send (struct Neighbour *n)
283 {
284  GNUNET_assert (0 < n->ready_window);
285  GNUNET_assert (NULL != n->env);
286  n->ready_window--;
289  GNUNET_MQ_send (n->h->mq, n->env);
291  "Passed message of type %u for neighbour `%s' to TRANSPORT.\n",
292  ntohs (GNUNET_MQ_env_get_msg (n->env)->type),
293  GNUNET_i2s (&n->id));
294 }
295 
296 
307 static void
309  const struct GNUNET_MessageHeader *msg,
310  void *impl_state)
311 {
312  struct Neighbour *n = impl_state;
313  struct OutboundMessage *obm;
314  uint16_t msize;
315 
316  msize = ntohs (msg->size);
317  if (msize >= GNUNET_MAX_MESSAGE_SIZE - sizeof (*obm))
318  {
319  GNUNET_break (0);
321  return;
322  }
324  "CORE requested transmission of message of type %u to neighbour `%s'.\n",
325  ntohs (msg->type),
326  GNUNET_i2s (&n->id));
327 
328  GNUNET_assert (NULL == n->env);
329  n->env =
331  n->env_size = ntohs (msg->size);
332  {
333  struct GNUNET_MQ_Envelope *env;
334 
336  obm->priority = htonl ((uint32_t) GNUNET_MQ_env_get_options (env));
337  }
338  obm->peer = n->id;
339  if (0 == n->ready_window)
340  {
342  "Flow control delays transmission to CORE until we see SEND_OK.\n");
343  return; /* can't send yet, need to wait for SEND_OK */
344  }
345  do_send (n);
346 }
347 
348 
356 static void
357 mq_destroy_impl (struct GNUNET_MQ_Handle *mq, void *impl_state)
358 {
359  struct Neighbour *n = impl_state;
360 
361  GNUNET_assert (mq == n->mq);
362  n->mq = NULL;
363 }
364 
365 
373 static void
374 mq_cancel_impl (struct GNUNET_MQ_Handle *mq, void *impl_state)
375 {
376  struct Neighbour *n = impl_state;
377 
378  n->ready_window++;
379  if (GNUNET_YES == n->awaiting_done)
380  {
382  n->env = NULL;
384  }
385  else
386  {
387  GNUNET_assert (0 == n->ready_window);
388  n->env = NULL;
389  }
390 }
391 
392 
401 static void
402 peer_mq_error_handler (void *cls, enum GNUNET_MQ_Error error)
403 {
404  /* struct Neighbour *n = cls; */
405 
406  GNUNET_break_op (0);
407 }
408 
409 
416 static void
417 handle_connect (void *cls, const struct ConnectInfoMessage *cim)
418 {
420  struct Neighbour *n;
421 
423  "Receiving CONNECT message for `%s'\n",
424  GNUNET_i2s (&cim->id));
425  n = neighbour_find (h, &cim->id);
426  if (NULL != n)
427  {
428  GNUNET_break (0);
430  return;
431  }
432  n = GNUNET_new (struct Neighbour);
433  n->id = cim->id;
434  n->h = h;
438  h->neighbours,
439  &n->id,
440  n,
442 
446  n,
447  h->handlers,
449  n);
450  if (NULL != h->nc_cb)
451  {
452  n->handlers_cls = h->nc_cb (h->cls, &n->id, n->mq);
454  }
455 }
456 
457 
464 static void
465 handle_disconnect (void *cls, const struct DisconnectInfoMessage *dim)
466 {
468  struct Neighbour *n;
469 
470  GNUNET_break (ntohl (dim->reserved) == 0);
472  "Receiving DISCONNECT message for `%s'.\n",
473  GNUNET_i2s (&dim->peer));
474  n = neighbour_find (h, &dim->peer);
475  if (NULL == n)
476  {
477  GNUNET_break (0);
479  return;
480  }
481  GNUNET_assert (GNUNET_YES == neighbour_delete (h, &dim->peer, n));
482 }
483 
484 
491 static void
492 handle_send_ok (void *cls, const struct SendOkMessage *okm)
493 {
495  struct Neighbour *n;
496 
498  "Receiving SEND_OK message for transmission to %s\n",
499  GNUNET_i2s (&okm->peer));
500  n = neighbour_find (h, &okm->peer);
501  if (NULL == n)
502  {
503  /* We should never get a 'SEND_OK' for a peer that we are not
504  connected to */
505  GNUNET_break (0);
507  return;
508  }
509  n->ready_window++;
510  if ((NULL != n->env) && (1 == n->ready_window))
511  do_send (n);
512 }
513 
514 
521 static int
522 check_recv (void *cls, const struct InboundMessage *im)
523 {
524  const struct GNUNET_MessageHeader *imm;
525  uint16_t size;
526 
527  size = ntohs (im->header.size) - sizeof (*im);
528  if (size < sizeof (struct GNUNET_MessageHeader))
529  {
530  GNUNET_break (0);
531  return GNUNET_SYSERR;
532  }
533  imm = (const struct GNUNET_MessageHeader *) &im[1];
534  if (ntohs (imm->size) != size)
535  {
536  GNUNET_break (0);
537  return GNUNET_SYSERR;
538  }
539  return GNUNET_OK;
540 }
541 
542 
549 static void
550 handle_recv (void *cls, const struct InboundMessage *im)
551 {
553  const struct GNUNET_MessageHeader *imm =
554  (const struct GNUNET_MessageHeader *) &im[1];
555  struct Neighbour *n;
556 
558  "Received message of type %u with %u bytes from `%s'.\n",
559  (unsigned int) ntohs (imm->type),
560  (unsigned int) ntohs (imm->size),
561  GNUNET_i2s (&im->peer));
562  n = neighbour_find (h, &im->peer);
563  if (NULL == n)
564  {
565  GNUNET_break (0);
567  return;
568  }
569  GNUNET_MQ_inject_message (n->mq, imm);
570 }
571 
572 
578 static void
579 reconnect (void *cls)
580 {
582  struct GNUNET_MQ_MessageHandler handlers[] =
583  {GNUNET_MQ_hd_fixed_size (connect,
585  struct ConnectInfoMessage,
586  h),
589  struct DisconnectInfoMessage,
590  h),
591  GNUNET_MQ_hd_fixed_size (send_ok,
593  struct SendOkMessage,
594  h),
595  GNUNET_MQ_hd_var_size (recv,
597  struct InboundMessage,
598  h),
600  struct GNUNET_MQ_Envelope *env;
601  struct StartMessage *s;
602  uint32_t options;
603 
604  h->reconnect_task = NULL;
605  LOG (GNUNET_ERROR_TYPE_DEBUG, "Connecting to transport service.\n");
606  GNUNET_assert (NULL == h->mq);
607  h->mq =
608  GNUNET_CLIENT_connect (h->cfg, "transport", handlers, &mq_error_handler, h);
609  if (NULL == h->mq)
610  return;
612  options = 0;
613  if (h->check_self)
614  options |= 1;
615  if (NULL != h->handlers)
616  options |= 2;
617  s->options = htonl (options);
618  s->self = h->self;
619  GNUNET_MQ_send (h->mq, env);
620 }
621 
622 
628 static void
630 {
632  if (NULL != h->mq)
633  {
634  GNUNET_MQ_destroy (h->mq);
635  h->mq = NULL;
636  }
637 }
638 
639 
646 static void
648 {
649  GNUNET_assert (NULL == h->reconnect_task);
650  disconnect (h);
652  "Scheduling task to reconnect to transport service in %s.\n",
654  h->reconnect_task =
657 }
658 
659 
667 struct GNUNET_MQ_Handle *
669  const struct GNUNET_PeerIdentity *peer)
670 {
671  struct Neighbour *n;
672 
673  n = neighbour_find (handle, peer);
674  if (NULL == n)
675  return NULL;
676  return n->mq;
677 }
678 
679 
700 void
701 GNUNET_TRANSPORT_core_receive_continue (struct GNUNET_TRANSPORT_CoreHandle *ch,
702  const struct GNUNET_PeerIdentity *pid)
703 {
704  struct GNUNET_MQ_Envelope *env;
705  struct RecvOkMessage *rok;
706 
708  "Message for %s finished CORE processing, sending RECV_OK.\n",
709  GNUNET_i2s (pid));
710  if (NULL == ch->mq)
711  return;
713  rok->increase_window_delta = htonl (1);
714  rok->peer = *pid;
715  GNUNET_MQ_send (ch->mq, env);
716 }
717 
718 
734  const struct GNUNET_PeerIdentity *self,
735  const struct GNUNET_MQ_MessageHandler *handlers,
736  void *cls,
739 {
741  unsigned int i;
742 
744  if (NULL != self)
745  {
746  h->self = *self;
747  h->check_self = GNUNET_YES;
748  }
749  h->cfg = cfg;
750  h->cls = cls;
751  h->nc_cb = nc;
752  h->nd_cb = nd;
754  if (NULL != handlers)
755  {
756  for (i = 0; NULL != handlers[i].cb; i++)
757  ;
760  handlers,
761  i * sizeof (struct GNUNET_MQ_MessageHandler));
762  }
763  LOG (GNUNET_ERROR_TYPE_DEBUG, "Connecting to transport service\n");
764  reconnect (h);
765  if (NULL == h->mq)
766  {
768  GNUNET_free (h);
769  return NULL;
770  }
771  h->neighbours =
773  return h;
774 }
775 
776 
783 void
785 {
786  LOG (GNUNET_ERROR_TYPE_DEBUG, "Transport disconnect called!\n");
787  /* this disconnects all neighbours... */
788  disconnect (handle);
789  /* and now we stop trying to connect again... */
790  if (NULL != handle->reconnect_task)
791  {
793  handle->reconnect_task = NULL;
794  }
796  handle->neighbours = NULL;
797  GNUNET_free_non_null (handle->handlers);
798  handle->handlers = NULL;
799  GNUNET_free (handle);
800 }
801 
802 
803 /* 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
static struct GNUNET_CADET_Channel * ch
Channel handle.
Definition: gnunet-cadet.c:117
static void reconnect(void *cls)
Try again to connect to transport service.
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
void * cls
Closure for the callbacks.
const struct GNUNET_MessageHeader * GNUNET_MQ_env_get_msg(const struct GNUNET_MQ_Envelope *env)
Obtain message contained in envelope.
Definition: mq.c:1080
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
static void handle_disconnect(void *cls, const struct DisconnectInfoMessage *dim)
Function we use for handling incoming disconnect messages.
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
#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.
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_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_send_done(void *cls)
A message from the handler&#39;s message queue to a neighbour was transmitted.
static void disconnect(struct GNUNET_TRANSPORT_CoreHandle *h)
Disconnect from the transport service.
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
static void mq_destroy_impl(struct GNUNET_MQ_Handle *mq, void *impl_state)
Handle destruction of a message queue.
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.
#define STARTING_NEIGHBOURS_SIZE
How large to start with for the hashmap of neighbours.
struct GNUNET_PeerIdentity self
Identity we think we have.
Definition: transport.h:110
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)
Connect to the transport service.
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.
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
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.
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 int neighbour_delete(void *cls, const struct GNUNET_PeerIdentity *key, void *value)
Iterator over hash map entries, for deleting state of a neighbour.
#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.
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
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
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. ...
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.
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.
#define GNUNET_MQ_hd_var_size(name, code, str, ctx)
#define GNUNET_break_op(cond)
Use this for assertion violations caused by other peers (i.e.
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 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 handle_connect(void *cls, const struct ConnectInfoMessage *cim)
Function we use for handling incoming connect messages.
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.
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 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.
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
Message used to notify the transport service about a message to be transmitted to another peer...
Definition: transport.h:296
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
Message from the transport service to the library informing about disconnects.
Definition: transport.h:153
unsigned int ready_window
How many messages can we still send to this peer before we should throttle?
#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 ...
#define LOG(kind,...)
#define GNUNET_TIME_UNIT_ZERO
Relative time zero.
static void handle_send_ok(void *cls, const struct SendOkMessage *okm)
Function we use for handling incoming send-ok messages.
static void mq_cancel_impl(struct GNUNET_MQ_Handle *mq, void *impl_state)
Implementation function that cancels the currently sent message.
#define GNUNET_MAX_MESSAGE_SIZE
Largest supported message (to be precise, one byte more than the largest possible message...
static void handle_recv(void *cls, const struct InboundMessage *im)
Function we use for handling incoming messages.
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.
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
int16_t awaiting_done
Used to indicate our status if env is non-NULL.
configuration data
Definition: configuration.c:85
static int check_recv(void *cls, const struct InboundMessage *im)
Function we use for checking incoming "inbound" messages.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_RECV
Message from TRANSPORT notifying about a message that was received.
struct GNUNET_PeerIdentity peer
Who got disconnected?
Definition: transport.h:169
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.
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 struct Neighbour * neighbour_find(struct GNUNET_TRANSPORT_CoreHandle *h, const struct GNUNET_PeerIdentity *peer)
Get the neighbour list entry for the given peer.
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
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.
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.
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.
#define SEND_WINDOW_SIZE
Window size.
Time for relative time used by GNUnet, in microseconds.
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...
static void do_send(struct Neighbour *n)
We have an envelope waiting for transmission at n, and our transmission window is positive...
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