GNUnet  0.11.x
Data Structures | Macros | Functions
transport_api2_core.c File Reference
#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_constants.h"
#include "gnunet_arm_service.h"
#include "gnunet_hello_lib.h"
#include "gnunet_protocols.h"
#include "gnunet_transport_core_service.h"
#include "transport.h"
Include dependency graph for transport_api2_core.c:

Go to the source code of this file.

Data Structures

struct  Neighbour
 A connected controller which is not our child. More...
 
struct  GNUNET_TRANSPORT_CoreHandle
 Handle for the transport service (includes all of the state for the transport service). More...
 

Macros

#define LOG(kind, ...)   GNUNET_log_from (kind, "transport-api-core", __VA_ARGS__)
 
#define STARTING_NEIGHBOURS_SIZE   16
 How large to start with for the hashmap of neighbours. More...
 
#define SEND_WINDOW_SIZE   4
 Window size. More...
 

Functions

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. More...
 
static struct Neighbourneighbour_find (struct GNUNET_TRANSPORT_CoreHandle *h, const struct GNUNET_PeerIdentity *peer)
 Get the neighbour list entry for the given peer. More...
 
static int neighbour_delete (void *cls, const struct GNUNET_PeerIdentity *key, void *value)
 Iterator over hash map entries, for deleting state of a neighbour. More...
 
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 creation of the message queue. More...
 
static void notify_send_done (void *cls)
 A message from the handler's message queue to a neighbour was transmitted. More...
 
static void do_send (struct Neighbour *n)
 We have an envelope waiting for transmission at n, and our transmission window is positive. More...
 
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. More...
 
static void mq_destroy_impl (struct GNUNET_MQ_Handle *mq, void *impl_state)
 Handle destruction of a message queue. More...
 
static void mq_cancel_impl (struct GNUNET_MQ_Handle *mq, void *impl_state)
 Implementation function that cancels the currently sent message. More...
 
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. More...
 
static void handle_connect (void *cls, const struct ConnectInfoMessage *cim)
 Function we use for handling incoming connect messages. More...
 
static void handle_disconnect (void *cls, const struct DisconnectInfoMessage *dim)
 Function we use for handling incoming disconnect messages. More...
 
static void handle_send_ok (void *cls, const struct SendOkMessage *okm)
 Function we use for handling incoming send-ok messages. More...
 
static int check_recv (void *cls, const struct InboundMessage *im)
 Function we use for checking incoming "inbound" messages. More...
 
static void handle_recv (void *cls, const struct InboundMessage *im)
 Function we use for handling incoming messages. More...
 
static void reconnect (void *cls)
 Try again to connect to transport service. More...
 
static void disconnect (struct GNUNET_TRANSPORT_CoreHandle *h)
 Disconnect from the transport service. More...
 
struct GNUNET_MQ_HandleGNUNET_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. More...
 

Macro Definition Documentation

◆ LOG

#define LOG (   kind,
  ... 
)    GNUNET_log_from (kind, "transport-api-core", __VA_ARGS__)

Definition at line 35 of file transport_api2_core.c.

◆ STARTING_NEIGHBOURS_SIZE

#define STARTING_NEIGHBOURS_SIZE   16

How large to start with for the hashmap of neighbours.

Definition at line 40 of file transport_api2_core.c.

◆ SEND_WINDOW_SIZE

#define SEND_WINDOW_SIZE   4

Window size.

How many messages to the same target do we pass to TRANSPORT without a SEND_OK in between? Small values limit thoughput, large values will increase latency.

FIXME-OPTIMIZE: find out what good values are experimentally, maybe set adaptively (i.e. to observed available bandwidth).

Definition at line 50 of file transport_api2_core.c.

Function Documentation

◆ disconnect_and_schedule_reconnect()

static void disconnect_and_schedule_reconnect ( struct GNUNET_TRANSPORT_CoreHandle h)
static

Function that will schedule the job that will try to connect us again to the client.

Parameters
htransport service to reconnect

Definition at line 645 of file transport_api2_core.c.

646 {
647  GNUNET_assert (NULL == h->reconnect_task);
648  disconnect (h);
650  "Scheduling task to reconnect to transport service in %s.\n",
652  h->reconnect_task =
653  GNUNET_SCHEDULER_add_delayed (h->reconnect_delay, &reconnect, h);
654  h->reconnect_delay = GNUNET_TIME_STD_BACKOFF (h->reconnect_delay);
655 }
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:99
@ GNUNET_YES
Definition: gnunet_common.h:97
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
@ GNUNET_ERROR_TYPE_DEBUG
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:1269
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:557
#define GNUNET_TIME_STD_BACKOFF(r)
Perform our standard exponential back-off calculation, starting at 1 ms and then going by a factor of...
struct GNUNET_SCHEDULER_Task * reconnect_task
ID of the reconnect task (if any).
Definition: arm_api.c:147
static void disconnect(struct GNUNET_TRANSPORT_CoreHandle *h)
Disconnect from the transport service.
static void reconnect(void *cls)
Try again to connect to transport service.
#define LOG(kind,...)

References disconnect(), GNUNET_assert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_SCHEDULER_add_delayed(), GNUNET_STRINGS_relative_time_to_string(), GNUNET_TIME_STD_BACKOFF, GNUNET_YES, h, LOG, reconnect(), and GNUNET_ARM_Handle::reconnect_task.

Referenced by handle_connect(), handle_disconnect(), handle_recv(), handle_send_ok(), and mq_error_handler().

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◆ neighbour_find()

static struct Neighbour* neighbour_find ( struct GNUNET_TRANSPORT_CoreHandle h,
const struct GNUNET_PeerIdentity peer 
)
static

Get the neighbour list entry for the given peer.

Parameters
hour context
peerpeer to look up
Returns
NULL if no such peer entry exists

Definition at line 189 of file transport_api2_core.c.

191 {
192  return GNUNET_CONTAINER_multipeermap_get (h->neighbours, peer);
193 }
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.
struct GNUNET_TESTBED_Peer * peer
The peer associated with this model.

References GNUNET_CONTAINER_multipeermap_get(), h, and peer.

Referenced by handle_connect(), handle_disconnect(), handle_recv(), and handle_send_ok().

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◆ neighbour_delete()

static int neighbour_delete ( void *  cls,
const struct GNUNET_PeerIdentity key,
void *  value 
)
static

Iterator over hash map entries, for deleting state of a neighbour.

Parameters
clsthe struct GNUNET_TRANSPORT_CoreHandle *
keypeer identity
valuevalue in the hash map, the neighbour entry to delete
Returns
GNUNET_YES if we should continue to iterate, GNUNET_NO if not.

Definition at line 207 of file transport_api2_core.c.

208 {
210  struct Neighbour *n = value;
211 
213  "Dropping entry for neighbour `%s'.\n",
214  GNUNET_i2s (key));
215  if (NULL != handle->nd_cb)
216  handle->nd_cb (handle->cls, &n->id, n->handlers_cls);
217  if (NULL != n->env)
218  {
220  n->env = NULL;
221  }
222  GNUNET_MQ_destroy (n->mq);
223  GNUNET_assert (NULL == n->mq);
224  GNUNET_assert (
225  GNUNET_YES ==
227  GNUNET_free (n);
228  return GNUNET_YES;
229 }
struct GNUNET_HashCode key
The key used in the DHT.
static struct GNUNET_DNS_Handle * handle
Handle to transport service.
static char * value
Value of the record to add/remove.
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.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
#define GNUNET_free(ptr)
Wrapper around free.
void GNUNET_MQ_send_cancel(struct GNUNET_MQ_Envelope *ev)
Cancel sending the message.
Definition: mq.c:929
void GNUNET_MQ_destroy(struct GNUNET_MQ_Handle *mq)
Destroy the message queue.
Definition: mq.c:837
Handle for the transport service (includes all of the state for the transport service).
void * cls
Closure for the callbacks.
A connected controller which is not our child.
void * handlers_cls
Closure for mq handlers.
struct GNUNET_MQ_Envelope * env
Envelope with the message we are currently transmitting (or NULL).
struct GNUNET_MQ_Handle * mq
Active message queue for the peer.
struct GNUNET_PeerIdentity id
Identity of this neighbour.

References GNUNET_TRANSPORT_CoreHandle::cls, Neighbour::env, GNUNET_assert, GNUNET_CONTAINER_multipeermap_remove(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_i2s(), GNUNET_MQ_destroy(), GNUNET_MQ_send_cancel(), GNUNET_YES, handle, Neighbour::handlers_cls, Neighbour::id, key, LOG, Neighbour::mq, and value.

Referenced by disconnect(), and handle_disconnect().

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◆ mq_error_handler()

static void mq_error_handler ( void *  cls,
enum GNUNET_MQ_Error  error 
)
static

Generic error handler, called with the appropriate error code and the same closure specified at the creation of the message queue.

Not every message queue implementation supports an error handler.

Parameters
clsclosure with the struct GNUNET_TRANSPORT_CoreHandle *
errorerror code

Definition at line 242 of file transport_api2_core.c.

243 {
245 
247  "Error receiving from transport service, disconnecting temporarily.\n");
249 }
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.

References GNUNET_TRANSPORT_CoreHandle::cls, disconnect_and_schedule_reconnect(), GNUNET_ERROR_TYPE_DEBUG, h, and LOG.

Referenced by reconnect().

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◆ notify_send_done()

static void notify_send_done ( void *  cls)
static

A message from the handler's message queue to a neighbour was transmitted.

Now trigger (possibly delayed) notification of the neighbour's message queue that we are done and thus ready for the next message. Note that the MQ being ready is independent of the send window, as we may queue many messages and simply not pass them to TRANSPORT if the send window is insufficient.

Parameters
clsthe struct Neighbour where the message was sent

Definition at line 263 of file transport_api2_core.c.

264 {
265  struct Neighbour *n = cls;
266 
268  n->env = NULL;
270 }
@ GNUNET_NO
Definition: gnunet_common.h:94
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:499
int16_t awaiting_done
Used to indicate our status if env is non-NULL.

References Neighbour::awaiting_done, Neighbour::env, GNUNET_MQ_impl_send_continue(), GNUNET_NO, and Neighbour::mq.

Referenced by do_send().

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◆ do_send()

static void do_send ( struct Neighbour n)
static

We have an envelope waiting for transmission at n, and our transmission window is positive.

Perform the transmission.

Parameters
nneighbour to perform transmission for

Definition at line 280 of file transport_api2_core.c.

281 {
282  GNUNET_assert (0 < n->ready_window);
283  GNUNET_assert (NULL != n->env);
284  n->ready_window--;
287  GNUNET_MQ_send (n->h->mq, n->env);
289  "Passed message of type %u for neighbour `%s' to TRANSPORT.\n",
290  ntohs (GNUNET_MQ_env_get_msg (n->env)->type),
291  GNUNET_i2s (&n->id));
292 }
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:355
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:787
const struct GNUNET_MessageHeader * GNUNET_MQ_env_get_msg(const struct GNUNET_MQ_Envelope *env)
Obtain message contained in envelope.
Definition: mq.c:1097
uint16_t type
The type of the message (GNUNET_MESSAGE_TYPE_XXXX), in big-endian format.
struct GNUNET_MQ_Handle * mq
My client connection to the transport service.
struct GNUNET_TRANSPORT_CoreHandle * h
Overall transport handle.
unsigned int ready_window
How many messages can we still send to this peer before we should throttle?
static void notify_send_done(void *cls)
A message from the handler's message queue to a neighbour was transmitted.

References Neighbour::awaiting_done, Neighbour::env, GNUNET_assert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_i2s(), GNUNET_MQ_env_get_msg(), GNUNET_MQ_notify_sent(), GNUNET_MQ_send(), GNUNET_YES, Neighbour::h, Neighbour::id, LOG, GNUNET_TRANSPORT_CoreHandle::mq, notify_send_done(), Neighbour::ready_window, and GNUNET_MessageHeader::type.

Referenced by handle_send_ok(), and mq_send_impl().

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◆ mq_send_impl()

static void mq_send_impl ( struct GNUNET_MQ_Handle mq,
const struct GNUNET_MessageHeader msg,
void *  impl_state 
)
static

Implement sending functionality of a message queue.

Called one message at a time. Should send the msg to the transport service and then notify the queue once we are ready for the next one.

Parameters
mqthe message queue
msgthe message to send
impl_statestate of the implementation

Definition at line 306 of file transport_api2_core.c.

309 {
310  struct Neighbour *n = impl_state;
311  struct OutboundMessage *obm;
312  uint16_t msize;
313 
314  msize = ntohs (msg->size);
315  if (msize >= GNUNET_MAX_MESSAGE_SIZE - sizeof(*obm))
316  {
317  GNUNET_break (0);
319  return;
320  }
322  "CORE requested transmission of message of type %u to neighbour `%s'.\n",
323  ntohs (msg->type),
324  GNUNET_i2s (&n->id));
325 
326  GNUNET_assert (NULL == n->env);
327  n->env =
329  n->env_size = ntohs (msg->size);
330  {
331  struct GNUNET_MQ_Envelope *env;
332 
334  obm->priority = htonl ((uint32_t) GNUNET_MQ_env_get_options (env));
335  }
336  obm->peer = n->id;
337  if (0 == n->ready_window)
338  {
340  "Flow control delays transmission to CORE until we see SEND_OK.\n");
341  return; /* can't send yet, need to wait for SEND_OK */
342  }
343  do_send (n);
344 }
struct GNUNET_MQ_Handle * mq
Definition: 003.c:5
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
#define GNUNET_MAX_MESSAGE_SIZE
Largest supported message (to be precise, one byte more than the largest possible message,...
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur.
#define GNUNET_MQ_msg_nested_mh(mvar, type, mh)
Allocate a GNUNET_MQ_Envelope, and append a payload message after the given message struct.
enum GNUNET_MQ_PriorityPreferences GNUNET_MQ_env_get_options(struct GNUNET_MQ_Envelope *env)
Get performance preferences set for this envelope.
Definition: mq.c:1037
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:991
#define GNUNET_MESSAGE_TYPE_TRANSPORT_SEND
Request to TRANSPORT to transmit a message.
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format.
uint16_t env_size
Size of the message in env.
Message used to notify the transport service about a message to be transmitted to another peer.
Definition: transport.h:285
uint32_t priority
An enum GNUNET_MQ_PriorityPreferences in NBO.
Definition: transport.h:294
struct GNUNET_PeerIdentity peer
Which peer should receive the message?
Definition: transport.h:308
static void do_send(struct Neighbour *n)
We have an envelope waiting for transmission at n, and our transmission window is positive.

References do_send(), env, Neighbour::env, Neighbour::env_size, GNUNET_assert, GNUNET_break, GNUNET_ERROR_TYPE_DEBUG, GNUNET_i2s(), GNUNET_MAX_MESSAGE_SIZE, GNUNET_MESSAGE_TYPE_TRANSPORT_SEND, GNUNET_MQ_env_get_options(), GNUNET_MQ_get_current_envelope(), GNUNET_MQ_impl_send_continue(), GNUNET_MQ_msg_nested_mh, Neighbour::id, LOG, mq, msg, OutboundMessage::peer, OutboundMessage::priority, Neighbour::ready_window, GNUNET_MessageHeader::size, and GNUNET_MessageHeader::type.

Referenced by handle_connect().

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◆ mq_destroy_impl()

static void mq_destroy_impl ( struct GNUNET_MQ_Handle mq,
void *  impl_state 
)
static

Handle destruction of a message queue.

Implementations must not free mq, but should take care of impl_state.

Parameters
mqthe message queue to destroy
impl_statestate of the implementation

Definition at line 355 of file transport_api2_core.c.

356 {
357  struct Neighbour *n = impl_state;
358 
359  GNUNET_assert (mq == n->mq);
360  n->mq = NULL;
361 }

References GNUNET_assert, mq, and Neighbour::mq.

Referenced by handle_connect().

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◆ mq_cancel_impl()

static void mq_cancel_impl ( struct GNUNET_MQ_Handle mq,
void *  impl_state 
)
static

Implementation function that cancels the currently sent message.

Should basically undo whatever mq_send_impl() did.

Parameters
mqmessage queue
impl_statestate specific to the implementation

Definition at line 372 of file transport_api2_core.c.

373 {
374  struct Neighbour *n = impl_state;
375 
376  n->ready_window++;
377  if (GNUNET_YES == n->awaiting_done)
378  {
380  n->env = NULL;
382  }
383  else
384  {
385  GNUNET_assert (0 == n->ready_window);
386  n->env = NULL;
387  }
388 }

References Neighbour::awaiting_done, Neighbour::env, GNUNET_assert, GNUNET_MQ_send_cancel(), GNUNET_NO, GNUNET_YES, and Neighbour::ready_window.

Referenced by handle_connect().

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◆ peer_mq_error_handler()

static void peer_mq_error_handler ( void *  cls,
enum GNUNET_MQ_Error  error 
)
static

We had an error processing a message we forwarded from a peer to the CORE service.

We should just complain about it but otherwise continue processing.

Parameters
clsclosure
errorerror code

Definition at line 400 of file transport_api2_core.c.

401 {
402  /* struct Neighbour *n = cls; */
403 
404  GNUNET_break_op (0);
405 }
#define GNUNET_break_op(cond)
Use this for assertion violations caused by other peers (i.e.

References GNUNET_break_op.

Referenced by handle_connect().

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◆ handle_connect()

static void handle_connect ( void *  cls,
const struct ConnectInfoMessage cim 
)
static

Function we use for handling incoming connect messages.

Parameters
clsclosure, a struct GNUNET_TRANSPORT_Handle *
cimmessage received

Definition at line 415 of file transport_api2_core.c.

416 {
418  struct Neighbour *n;
419 
421  "Receiving CONNECT message for `%s'\n",
422  GNUNET_i2s (&cim->id));
423  n = neighbour_find (h, &cim->id);
424  if (NULL != n)
425  {
426  GNUNET_break (0);
428  return;
429  }
430  n = GNUNET_new (struct Neighbour);
431  n->id = cim->id;
432  n->h = h;
436  h->neighbours,
437  &n->id,
438  n,
440 
444  n,
445  h->handlers,
447  n);
448  if (NULL != h->nc_cb)
449  {
450  n->handlers_cls = h->nc_cb (h->cls, &n->id, n->mq);
452  }
453 }
@ GNUNET_OK
Definition: gnunet_common.h:95
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.
@ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY
There must only be one value per key; storing a value should fail if a value under the same key alrea...
#define GNUNET_new(type)
Allocate a struct or union of the given type.
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:565
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:596
struct GNUNET_PeerIdentity id
Identity of the new neighbour.
Definition: transport.h:141
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.
static struct Neighbour * neighbour_find(struct GNUNET_TRANSPORT_CoreHandle *h, const struct GNUNET_PeerIdentity *peer)
Get the neighbour list entry for the given peer.
static void mq_destroy_impl(struct GNUNET_MQ_Handle *mq, void *impl_state)
Handle destruction of a message queue.
#define SEND_WINDOW_SIZE
Window size.
static void mq_cancel_impl(struct GNUNET_MQ_Handle *mq, void *impl_state)
Implementation function that cancels the currently sent message.
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.

References GNUNET_TRANSPORT_CoreHandle::cls, disconnect_and_schedule_reconnect(), GNUNET_assert, GNUNET_break, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY, GNUNET_CONTAINER_multipeermap_put(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_i2s(), GNUNET_MQ_queue_for_callbacks(), GNUNET_MQ_set_handlers_closure(), GNUNET_new, GNUNET_OK, h, Neighbour::h, Neighbour::handlers_cls, ConnectInfoMessage::id, Neighbour::id, LOG, Neighbour::mq, mq_cancel_impl(), mq_destroy_impl(), mq_send_impl(), neighbour_find(), peer_mq_error_handler(), Neighbour::ready_window, and SEND_WINDOW_SIZE.

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◆ handle_disconnect()

static void handle_disconnect ( void *  cls,
const struct DisconnectInfoMessage dim 
)
static

Function we use for handling incoming disconnect messages.

Parameters
clsclosure, a struct GNUNET_TRANSPORT_CoreHandle *
dimmessage received

Definition at line 463 of file transport_api2_core.c.

464 {
466  struct Neighbour *n;
467 
468  GNUNET_break (ntohl (dim->reserved) == 0);
470  "Receiving DISCONNECT message for `%s'.\n",
471  GNUNET_i2s (&dim->peer));
472  n = neighbour_find (h, &dim->peer);
473  if (NULL == n)
474  {
475  GNUNET_break (0);
477  return;
478  }
480 }
uint32_t reserved
Reserved, always zero.
Definition: transport.h:159
struct GNUNET_PeerIdentity peer
Who got disconnected?
Definition: transport.h:164
static int neighbour_delete(void *cls, const struct GNUNET_PeerIdentity *key, void *value)
Iterator over hash map entries, for deleting state of a neighbour.

References GNUNET_TRANSPORT_CoreHandle::cls, disconnect_and_schedule_reconnect(), GNUNET_assert, GNUNET_break, GNUNET_ERROR_TYPE_DEBUG, GNUNET_i2s(), GNUNET_YES, h, LOG, neighbour_delete(), neighbour_find(), DisconnectInfoMessage::peer, and DisconnectInfoMessage::reserved.

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◆ handle_send_ok()

static void handle_send_ok ( void *  cls,
const struct SendOkMessage okm 
)
static

Function we use for handling incoming send-ok messages.

Parameters
clsclosure, a struct GNUNET_TRANSPORT_CoreHandle *
okmmessage received

Definition at line 490 of file transport_api2_core.c.

491 {
493  struct Neighbour *n;
494 
496  "Receiving SEND_OK message for transmission to %s\n",
497  GNUNET_i2s (&okm->peer));
498  n = neighbour_find (h, &okm->peer);
499  if (NULL == n)
500  {
501  /* We should never get a 'SEND_OK' for a peer that we are not
502  connected to */
503  GNUNET_break (0);
505  return;
506  }
507  n->ready_window++;
508  if ((NULL != n->env) && (1 == n->ready_window))
509  do_send (n);
510 }
struct GNUNET_PeerIdentity peer
Which peer can send more now?
Definition: transport.h:251

References GNUNET_TRANSPORT_CoreHandle::cls, disconnect_and_schedule_reconnect(), do_send(), Neighbour::env, GNUNET_break, GNUNET_ERROR_TYPE_DEBUG, GNUNET_i2s(), h, LOG, neighbour_find(), SendOkMessage::peer, and Neighbour::ready_window.

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◆ check_recv()

static int check_recv ( void *  cls,
const struct InboundMessage im 
)
static

Function we use for checking incoming "inbound" messages.

Parameters
clsclosure, a struct GNUNET_TRANSPORT_CoreHandle *
immessage received

Definition at line 520 of file transport_api2_core.c.

521 {
522  const struct GNUNET_MessageHeader *imm;
523  uint16_t size;
524 
525  size = ntohs (im->header.size) - sizeof(*im);
526  if (size < sizeof(struct GNUNET_MessageHeader))
527  {
528  GNUNET_break (0);
529  return GNUNET_SYSERR;
530  }
531  imm = (const struct GNUNET_MessageHeader *) &im[1];
532  if (ntohs (imm->size) != size)
533  {
534  GNUNET_break (0);
535  return GNUNET_SYSERR;
536  }
537  return GNUNET_OK;
538 }
@ GNUNET_SYSERR
Definition: gnunet_common.h:93
static unsigned int size
Size of the "table".
Definition: peer.c:67
Header for all communications.
struct GNUNET_MessageHeader header
Type will be GNUNET_MESSAGE_TYPE_TRANSPORT_RECV.
Definition: transport.h:203

References GNUNET_break, GNUNET_OK, GNUNET_SYSERR, InboundMessage::header, GNUNET_MessageHeader::size, and size.

◆ handle_recv()

static void handle_recv ( void *  cls,
const struct InboundMessage im 
)
static

Function we use for handling incoming messages.

Parameters
clsclosure, a struct GNUNET_TRANSPORT_CoreHandle *
immessage received

Definition at line 548 of file transport_api2_core.c.

549 {
551  const struct GNUNET_MessageHeader *imm =
552  (const struct GNUNET_MessageHeader *) &im[1];
553  struct Neighbour *n;
554 
556  "Received message of type %u with %u bytes from `%s'.\n",
557  (unsigned int) ntohs (imm->type),
558  (unsigned int) ntohs (imm->size),
559  GNUNET_i2s (&im->peer));
560  n = neighbour_find (h, &im->peer);
561  if (NULL == n)
562  {
563  GNUNET_break (0);
565  return;
566  }
567  GNUNET_MQ_inject_message (n->mq, imm);
568 }
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
struct GNUNET_PeerIdentity peer
Which peer sent the message?
Definition: transport.h:208

References GNUNET_TRANSPORT_CoreHandle::cls, disconnect_and_schedule_reconnect(), GNUNET_break, GNUNET_ERROR_TYPE_DEBUG, GNUNET_i2s(), GNUNET_MQ_inject_message(), h, LOG, Neighbour::mq, neighbour_find(), InboundMessage::peer, GNUNET_MessageHeader::size, and GNUNET_MessageHeader::type.

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◆ reconnect()

static void reconnect ( void *  cls)
static

Try again to connect to transport service.

Parameters
clsthe handle to the transport service

Definition at line 577 of file transport_api2_core.c.

578 {
581  { GNUNET_MQ_hd_fixed_size (connect,
583  struct ConnectInfoMessage,
584  h),
587  struct DisconnectInfoMessage,
588  h),
589  GNUNET_MQ_hd_fixed_size (send_ok,
591  struct SendOkMessage,
592  h),
593  GNUNET_MQ_hd_var_size (recv,
595  struct InboundMessage,
596  h),
598  struct GNUNET_MQ_Envelope *env;
599  struct StartMessage *s;
600  uint32_t options;
601 
602  h->reconnect_task = NULL;
603  LOG (GNUNET_ERROR_TYPE_DEBUG, "Connecting to transport service.\n");
604  GNUNET_assert (NULL == h->mq);
605  h->mq =
607  if (NULL == h->mq)
608  return;
610  options = 0;
611  if (h->check_self)
612  options |= 1;
613  if (NULL != h->handlers)
614  options |= 2;
615  s->options = htonl (options);
616  s->self = h->self;
617  GNUNET_MQ_send (h->mq, env);
618 }
struct GNUNET_GETOPT_CommandLineOption options[]
Definition: 002.c:5
static struct GNUNET_CADET_MessageHandler handlers[]
Handlers, for diverse services.
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:1064
#define GNUNET_MQ_handler_end()
End-marker for the handlers array.
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
#define GNUNET_MQ_hd_var_size(name, code, str, ctx)
#define GNUNET_MQ_hd_fixed_size(name, code, str, ctx)
#define GNUNET_MESSAGE_TYPE_TRANSPORT_CONNECT
Message from TRANSPORT notifying about a client that connected to us.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_START
Message from the core saying that the transport server should start giving it messages.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_RECV
Message from TRANSPORT notifying about a message that was received.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_DISCONNECT
Message from TRANSPORT notifying about a client that disconnected from us.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_OK
Confirmation from TRANSPORT that message for transmission has been queued (and that the next message ...
Message from the transport service to the library informing about neighbors.
Definition: transport.h:118
Message from the transport service to the library informing about disconnects.
Definition: transport.h:150
struct GNUNET_MQ_Handle * mq
Our connection to the ARM service.
Definition: arm_api.c:107
const struct GNUNET_CONFIGURATION_Handle * cfg
The configuration that we are using.
Definition: arm_api.c:112
Message handler for a specific message type.
Message used to notify the transport API about a message received from the network.
Definition: transport.h:199
Message used to notify the transport API that it can send another message to the transport service.
Definition: transport.h:217
Message from the transport service to the library asking to check if both processes agree about this ...
Definition: transport.h:92
uint32_t options
0: no options 1: The self field should be checked 2: this client is interested in payload traffic
Definition: transport.h:103
struct GNUNET_PeerIdentity self
Identity we think we have.
Definition: transport.h:109
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...

References GNUNET_ARM_Handle::cfg, GNUNET_TRANSPORT_CoreHandle::cls, disconnect(), env, GNUNET_assert, GNUNET_CLIENT_connect(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_MESSAGE_TYPE_TRANSPORT_CONNECT, GNUNET_MESSAGE_TYPE_TRANSPORT_DISCONNECT, GNUNET_MESSAGE_TYPE_TRANSPORT_RECV, GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_OK, GNUNET_MESSAGE_TYPE_TRANSPORT_START, GNUNET_MQ_handler_end, GNUNET_MQ_hd_fixed_size, GNUNET_MQ_hd_var_size, GNUNET_MQ_msg, GNUNET_MQ_send(), h, handlers, LOG, GNUNET_ARM_Handle::mq, mq_error_handler(), options, StartMessage::options, GNUNET_ARM_Handle::reconnect_task, and StartMessage::self.

Referenced by disconnect_and_schedule_reconnect().

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◆ disconnect()

static void disconnect ( struct GNUNET_TRANSPORT_CoreHandle h)
static

Disconnect from the transport service.

Parameters
htransport service to reconnect

Definition at line 627 of file transport_api2_core.c.

628 {
630  if (NULL != h->mq)
631  {
633  h->mq = NULL;
634  }
635 }
int GNUNET_CONTAINER_multipeermap_iterate(struct GNUNET_CONTAINER_MultiPeerMap *map, GNUNET_CONTAINER_PeerMapIterator it, void *it_cls)
Iterate over all entries in the map.

References GNUNET_CONTAINER_multipeermap_iterate(), GNUNET_MQ_destroy(), h, GNUNET_ARM_Handle::mq, and neighbour_delete().

Referenced by disconnect_and_schedule_reconnect(), and reconnect().

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