2 This file is part of GNUnet.
3 Copyright (C) 2009 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
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 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 Boston, MA 02110-1301, USA.
22 * @author Christian Grothoff
25 * "Global" constants for performance tuning
28 #ifndef GNUNET_CONSTANTS_H
29 #define GNUNET_CONSTANTS_H
34 #if 0 /* keep Emacsens' auto-indent happy */
40 * Last resort choice for configuration file name.
42 #define GNUNET_DEFAULT_USER_CONFIG_FILE "~/.config/gnunet.conf"
45 * Bandwidth (in/out) to assume initially (before either peer has
46 * communicated any particular preference). Should be rather low; set
47 * so that at least one maximum-size message can be send roughly once
50 #define GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT GNUNET_BANDWIDTH_value_init (1024)
53 * After how long do we consider a connection to a peer dead
54 * if we don't receive messages from the peer?
56 #define GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 5)
59 * How long do we delay reading more from a peer after a quota violation?
61 #define GNUNET_CONSTANTS_QUOTA_VIOLATION_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 2)
64 * After how long do we consider a service unresponsive
65 * even if we assume that the service commonly does not
66 * respond instantly (DNS, Database, etc.).
68 #define GNUNET_CONSTANTS_SERVICE_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 10)
71 * How long do we delay messages to get larger packet sizes (CORKing)?
73 #define GNUNET_CONSTANTS_MAX_CORK_DELAY GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 1)
76 * After what amount of latency for a message do we print a warning?
78 #define GNUNET_CONSTANTS_LATENCY_WARN GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 3)
81 * Until which load do we consider the peer overly idle
82 * (which means that we would like to use more resources).<p>
84 * Note that we use 70 to leave some room for applications
85 * to consume resources "idly" (i.e. up to 85%) and then
86 * still have some room for "paid for" resource consumption.
88 #define GNUNET_CONSTANTS_IDLE_LOAD_THRESHOLD 70
91 * For how long do we allow unused bandwidth
92 * from the past to carry over into the future? (in seconds)
94 #define GNUNET_CONSTANTS_MAX_BANDWIDTH_CARRY_S 5
98 * After how long do we expire an address in a HELLO that we just
99 * validated? This value is also used for our own addresses when we
102 #define GNUNET_CONSTANTS_HELLO_ADDRESS_EXPIRATION GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 12)
106 * How long do we cache records at most in the DHT?
108 #define GNUNET_CONSTANTS_DHT_MAX_EXPIRATION GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 24)
112 * Size of the `struct EncryptedMessage` of the core (which
113 * is the per-message overhead of the core).
115 #define GNUNET_CONSTANTS_CORE_SIZE_ENCRYPTED_MESSAGE (24 + sizeof (struct GNUNET_HashCode))
118 * What is the maximum size for encrypted messages? Note that this
119 * number imposes a clear limit on the maximum size of any message.
120 * Set to a value close to 64k but not so close that transports will
121 * have trouble with their headers.
123 * Could theoretically be 64k minus (#GNUNET_CONSTANTS_CORE_SIZE_ENCRYPTED_MESSAGE +
124 * #GNUNET_CONSTANTS_TRANSPORT_SIZE_OUTBOUND_MESSAGE), but we're going
125 * to be more conservative for now.
127 #define GNUNET_CONSTANTS_MAX_ENCRYPTED_MESSAGE_SIZE (63 * 1024)
130 * Size of the CADET message overhead:
131 * + sizeof (struct GNUNET_CADET_Encrypted)
132 * + sizeof (struct GNUNET_CADET_Data)
133 * + sizeof (struct GNUNET_CADET_ACK))
135 * Checked for correcteness in gnunet-service-cadet_tunnel.c: GCT_init().
137 #define GNUNET_CONSTANTS_CADET_P2P_OVERHEAD 132
140 * Maximum message size that can be sent on CADET.
142 #define GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE \
143 (GNUNET_CONSTANTS_MAX_ENCRYPTED_MESSAGE_SIZE - GNUNET_CONSTANTS_CADET_P2P_OVERHEAD)
146 * Largest block that can be stored in the DHT.
148 #define GNUNET_CONSTANTS_MAX_BLOCK_SIZE (62 * 1024)
152 * K-value that must be used for the bloom filters in 'GET'
155 #define GNUNET_CONSTANTS_BLOOMFILTER_K 16
160 #if 0 /* keep Emacsens' auto-indent happy */