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/*
This file is part of GNUnet.
Copyright (C) 2009-2016 GNUnet e.V.
GNUnet is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published
by the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Affero General Public License for more details.
*/
/**
* @author Christian Grothoff
*
* @file
* Monitoring / diagnostics API for the transport service
*
* @defgroup transport TRANSPORT service
* Communication with other peers
*
* @see [Documentation](https://gnunet.org/transport-service)
*
* @{
*/
#ifndef GNUNET_TRANSPORT_MONITOR_SERVICE_H
#define GNUNET_TRANSPORT_MONITOR_SERVICE_H
#ifdef __cplusplus
extern "C"
{
#if 0 /* keep Emacsens' auto-indent happy */
}
#endif
#endif
#include "gnunet_util_lib.h"
/**
* Version number of the transport API.
*/
#define GNUNET_TRANSPORT_MONITOR_VERSION 0x00000000
/**
* Information about another peer's address.
*/
struct GNUNET_TRANSPORT_MonitorInformation
{
/**
* Address we have for the peer, human-readable, 0-terminated, in UTF-8.
*/
const char *address;
/**
* Network type of the address.
*/
enum GNUNET_ATS_Network_Type nt;
/**
* #GNUNET_YES if this is an inbound connection (communicator initiated)
* #GNUNET_NO if this is an outbound connection (transport initiated)
*/
int is_inbound;
/**
* Number of messages pending transmission for this @e address.
*/
uint32_t num_msg_pending;
/**
* Number of bytes pending transmission for this @e address.
*/
uint32_t num_bytes_pending;
/**
* When was this address last validated.
*/
struct GNUNET_TIME_Absolute last_validation;
/**
* When does this address expire.
*/
struct GNUNET_TIME_Absolute valid_until;
/**
* Time of the next validation operation.
*/
struct GNUNET_TIME_Absolute next_validation;
/**
* Current estimate of the RTT.
*/
struct GNUNET_TIME_Relative rtt;
};
/**
* Function to call with information about a peer.
*
* If one_shot was set to #GNUNET_YES to iterate over all peers once,
* a final call with NULL for peer and address will follow when done.
* In this case state and timeout do not contain valid values.
*
* The #GNUNET_TRANSPORT_monitor_peers_cancel() call MUST not be called from
* within this function!
*
*
* @param cls closure
* @param peer peer this update is about,
* NULL if this is the final last callback for a iteration operation
* @param mi monitoring data on the peer
*/
typedef void
(*GNUNET_TRANSPORT_MontiorCallback) (void *cls,
const struct GNUNET_PeerIdentity *peer,
const struct GNUNET_TRANSPORT_MonitorInformation *mi);
/**
* Handle for a #GNUNET_TRANSPORT_monitor() operation.
*/
struct GNUNET_TRANSPORT_MonitorContext;
/**
* Return information about a specific peer or all peers currently known to
* transport service once or in monitoring mode. To obtain information about
* a specific peer, a peer identity can be passed. To obtain information about
* all peers currently known to transport service, NULL can be passed as peer
* identity.
*
* For each peer, the callback is called with information about the address used
* to communicate with this peer, the state this peer is currently in and the
* the current timeout for this state.
*
* Upon completion, the #GNUNET_TRANSPORT_PeerIterateCallback is called one
* more time with `NULL`. After this, the operation must no longer be
* explicitly canceled.
*
* The #GNUNET_TRANSPORT_monitor_peers_cancel call MUST not be called in the
* the peer_callback!
*
* @param cfg configuration to use
* @param peer a specific peer identity to obtain information for,
* NULL for all peers
* @param one_shot #GNUNET_YES to return the current state and then end (with NULL+NULL),
* #GNUNET_NO to monitor peers continuously
* @param mc function to call with the results
* @param mc_cls closure for @a mc
*/
struct GNUNET_TRANSPORT_MonitorContext *
GNUNET_TRANSPORT_monitor (const struct GNUNET_CONFIGURATION_Handle *cfg,
const struct GNUNET_PeerIdentity *peer,
int one_shot,
GNUNET_TRANSPORT_MonitorCallback mc,
void *mc_cls);
/**
* Cancel request to monitor peers
*
* @param pmc handle for the request to cancel
*/
void
GNUNET_TRANSPORT_monitor_cancel (struct GNUNET_TRANSPORT_MonitorContext *pmc);
#if 0 /* keep Emacsens' auto-indent happy */
{
#endif
#ifdef __cplusplus
}
#endif
/* ifndef GNUNET_TRANSPORT_MONITOR_SERVICE_H */
#endif
/** @} */ /* end of group */
/* end of gnunet_transport_monitor_service.h */
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