cadet_api_list_peers.c File Reference

cadet api: client implementation of cadet service More...

#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_constants.h"
#include "gnunet_cadet_service.h"
#include "cadet.h"
#include "cadet_protocol.h"

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Data Structures
struct	GNUNET_CADET_PeersLister
	Operation handle. More...

Functions
static void	handle_get_peers (void *cls, const struct GNUNET_CADET_LocalInfoPeers *info)
	Process a local reply about info on all tunnels, pass info to the user. More...
static void	handle_get_peers_end (void *cls, const struct GNUNET_MessageHeader *msg)
	Process a end of list reply about info on all peers. More...
static void	reconnect (void *cls)
	Reconnect to the service and try again. More...
static void	error_handler (void *cls, enum GNUNET_MQ_Error error)
	Function called on connection trouble. More...
struct GNUNET_CADET_PeersLister *	GNUNET_CADET_list_peers (const struct GNUNET_CONFIGURATION_Handle *cfg, GNUNET_CADET_PeersCB callback, void *callback_cls)
	Request information about peers known to the running cadet service. More...
void *	GNUNET_CADET_list_peers_cancel (struct GNUNET_CADET_PeersLister *pl)
	Cancel a peer info request. More...

Detailed Description

cadet api: client implementation of cadet service

Author

Bartlomiej Polot

Christian Grothoff

Definition in file cadet_api_list_peers.c.

Function Documentation

handle_get_peers()

static void handle_get_peers ( void *  cls, const struct GNUNET_CADET_LocalInfoPeers *  info  )

static

Process a local reply about info on all tunnels, pass info to the user.

Parameters

cls	a struct GNUNET_CADET_PeersLister
info	Message itself.

Definition at line 78 of file cadet_api_list_peers.c.

{
  struct GNUNET_CADET_PeersLister *pl = cls;
  struct GNUNET_CADET_PeerListEntry ple;
 
  ple.peer = info->destination;
  ple.have_tunnel = (int) ntohs (info->tunnel);
  ple.n_paths = (unsigned int) ntohs (info->paths);
  ple.best_path_length = (unsigned int) ntohl (info->best_path_length);
  pl->peers_cb (pl->peers_cb_cls,
                &ple);
}

References GNUNET_CADET_PeerListEntry::best_path_length, GNUNET_CADET_PeerListEntry::have_tunnel, info, consensus-simulation::int, GNUNET_CADET_PeerListEntry::n_paths, GNUNET_CADET_PeerListEntry::peer, GNUNET_CADET_PeersLister::peers_cb, and GNUNET_CADET_PeersLister::peers_cb_cls.

handle_get_peers_end()

static void handle_get_peers_end ( void *  cls, const struct GNUNET_MessageHeader *  msg  )

static

Process a end of list reply about info on all peers.

Parameters

cls	a struct GNUNET_CADET_PeersLister
msg	Message itself.

Definition at line 100 of file cadet_api_list_peers.c.

{
  struct GNUNET_CADET_PeersLister *pl = cls;
 
  (void) msg;
 
  pl->peers_cb (pl->peers_cb_cls,
                NULL);
  GNUNET_CADET_list_peers_cancel (pl);
}

References GNUNET_CADET_list_peers_cancel(), msg, GNUNET_CADET_PeersLister::peers_cb, and GNUNET_CADET_PeersLister::peers_cb_cls.

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reconnect()

static void reconnect ( void *  cls )

static

Reconnect to the service and try again.

Parameters

cls	a struct GNUNET_CADET_PeersLister operation

Definition at line 150 of file cadet_api_list_peers.c.

{
  struct GNUNET_CADET_PeersLister *pl = cls;
  struct GNUNET_MQ_MessageHandler handlers[] = {
    GNUNET_MQ_hd_fixed_size (get_peers,
                             GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_PEERS,
                             struct GNUNET_CADET_LocalInfoPeers,
                             pl),
    GNUNET_MQ_hd_fixed_size (get_peers_end,
                             GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_PEERS_END,
                             struct GNUNET_MessageHeader,
                             pl),
    GNUNET_MQ_handler_end ()
  };
  struct GNUNET_MessageHeader *msg;
  struct GNUNET_MQ_Envelope *env;
 
  pl->reconnect_task = NULL;
  pl->mq = GNUNET_CLIENT_connect (pl->cfg,
                                  "cadet",
                                  handlers,
                                  &error_handler,
                                  pl);
  if (NULL == pl->mq)
    return;
  env = GNUNET_MQ_msg (msg,
                       GNUNET_MESSAGE_TYPE_CADET_LOCAL_REQUEST_INFO_PEERS);
  GNUNET_MQ_send (pl->mq,
                  env);
}

References GNUNET_CADET_PeersLister::cfg, env, error_handler(), get_peers(), GNUNET_CLIENT_connect(), GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_PEERS, GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_PEERS_END, GNUNET_MESSAGE_TYPE_CADET_LOCAL_REQUEST_INFO_PEERS, GNUNET_MQ_handler_end, GNUNET_MQ_hd_fixed_size, GNUNET_MQ_msg, GNUNET_MQ_send(), handlers, GNUNET_CADET_PeersLister::mq, msg, and GNUNET_CADET_PeersLister::reconnect_task.

Referenced by error_handler(), and GNUNET_CADET_list_peers().

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error_handler()

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

static

Function called on connection trouble.

Reconnects.

Parameters

cls	a struct GNUNET_CADET_PeersLister
error	error code from MQ

Definition at line 129 of file cadet_api_list_peers.c.

{
  struct GNUNET_CADET_PeersLister *pl = cls;
 
  GNUNET_MQ_destroy (pl->mq);
  pl->mq = NULL;
  pl->backoff = GNUNET_TIME_randomized_backoff (pl->backoff,
                                                GNUNET_TIME_UNIT_MINUTES);
  pl->reconnect_task = GNUNET_SCHEDULER_add_delayed (pl->backoff,
                                                     &reconnect,
                                                     pl);
}

References GNUNET_CADET_PeersLister::backoff, GNUNET_MQ_destroy(), GNUNET_SCHEDULER_add_delayed(), GNUNET_TIME_randomized_backoff(), GNUNET_TIME_UNIT_MINUTES, GNUNET_CADET_PeersLister::mq, reconnect(), and GNUNET_CADET_PeersLister::reconnect_task.

Referenced by reconnect().

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