aboutsummaryrefslogtreecommitdiff
path: root/src/include/gnunet_transport_monitor_service.h
blob: b9d024d59da2e8c43d22688a4551e3bb0b98ef75 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
/*
     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 Affero 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.
    
     You should have received a copy of the GNU Affero General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

/**
 * @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 */