/*
This file is part of GNUnet.
- (C) 2009 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2009 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 2, or (at your
+ by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
/**
- * @file include/gnunet_constants.h
- * @brief "global" constants for performance tuning
* @author Christian Grothoff
+ *
+ * @file
+ * Global constants for performance tuning
+ *
+ * @defgroup constants Constant definitions
+ * Global constants for performance tuning
+ * @{
*/
#ifndef GNUNET_CONSTANTS_H
#endif
/**
- * Amount of bytes per minute (in/out) to assume initially (before
- * either peer has communicated any particular preference). Should be
- * rather low; set so that at least one maximum-size message can be
- * send each minute.
+ * Bandwidth (in/out) to assume initially (before either peer has
+ * communicated any particular preference). Should be rather low; set
+ * so that at least one maximum-size message can be send roughly once
+ * per minute.
*/
-#define GNUNET_CONSTANTS_DEFAULT_BPM_IN_OUT GNUNET_SERVER_MAX_MESSAGE_SIZE
+#define GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT GNUNET_BANDWIDTH_value_init (1024)
/**
* After how long do we consider a connection to a peer dead
*/
#define GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 5)
+/**
+ * How long do we delay reading more from a peer after a quota violation?
+ */
+#define GNUNET_CONSTANTS_QUOTA_VIOLATION_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 2)
+
+/**
+ * After how long do we consider a service unresponsive
+ * even if we assume that the service commonly does not
+ * respond instantly (DNS, Database, etc.).
+ */
+#define GNUNET_CONSTANTS_SERVICE_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 10)
+
+/**
+ * How long do we delay messages to get larger packet sizes (CORKing)?
+ */
+#define GNUNET_CONSTANTS_MAX_CORK_DELAY GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 1)
+
+/**
+ * After what amount of latency for a message do we print a warning?
+ */
+#define GNUNET_CONSTANTS_LATENCY_WARN GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 3)
+
+/**
+ * Until which load do we consider the peer overly idle
+ * (which means that we would like to use more resources).<p>
+ *
+ * Note that we use 70 to leave some room for applications
+ * to consume resources "idly" (i.e. up to 85%) and then
+ * still have some room for "paid for" resource consumption.
+ */
+#define GNUNET_CONSTANTS_IDLE_LOAD_THRESHOLD 70
+
+/**
+ * For how long do we allow unused bandwidth
+ * from the past to carry over into the future? (in seconds)
+ */
+#define GNUNET_CONSTANTS_MAX_BANDWIDTH_CARRY_S 5
+
+
+/**
+ * After how long do we expire an address in a HELLO that we just
+ * validated? This value is also used for our own addresses when we
+ * create a HELLO.
+ */
+#define GNUNET_CONSTANTS_HELLO_ADDRESS_EXPIRATION GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 12)
+
+
+/**
+ * How long do we cache records at most in the DHT?
+ */
+#define GNUNET_CONSTANTS_DHT_MAX_EXPIRATION GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 24)
+
+
+/**
+ * Size of the `struct EncryptedMessage` of the core (which
+ * is the per-message overhead of the core).
+ */
+#define GNUNET_CONSTANTS_CORE_SIZE_ENCRYPTED_MESSAGE (24 + sizeof (struct GNUNET_HashCode))
+
+/**
+ * What is the maximum size for encrypted messages? Note that this
+ * number imposes a clear limit on the maximum size of any message.
+ * Set to a value close to 64k but not so close that transports will
+ * have trouble with their headers.
+ *
+ * Could theoretically be 64k minus (#GNUNET_CONSTANTS_CORE_SIZE_ENCRYPTED_MESSAGE +
+ * #GNUNET_CONSTANTS_TRANSPORT_SIZE_OUTBOUND_MESSAGE), but we're going
+ * to be more conservative for now.
+ */
+#define GNUNET_CONSTANTS_MAX_ENCRYPTED_MESSAGE_SIZE (63 * 1024)
+
+/**
+ * Size of the CADET message overhead:
+ * + sizeof (struct GNUNET_CADET_AX)
+ * + sizeof (struct GNUNET_CADET_Data)
+ * + sizeof (struct GNUNET_CADET_ACK))
+ *
+ * Checked for correcteness in gnunet-service-cadet_tunnel.c: GCT_init().
+ */
+#define GNUNET_CONSTANTS_CADET_P2P_OVERHEAD 164
+
+/**
+ * Maximum message size that can be sent on CADET.
+ */
+#define GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE \
+(GNUNET_CONSTANTS_MAX_ENCRYPTED_MESSAGE_SIZE - GNUNET_CONSTANTS_CADET_P2P_OVERHEAD)
+
+/**
+ * Largest block that can be stored in the DHT.
+ */
+#define GNUNET_CONSTANTS_MAX_BLOCK_SIZE (62 * 1024)
+
+
+/**
+ * K-value that must be used for the bloom filters in 'GET'
+ * queries.
+ */
+#define GNUNET_CONSTANTS_BLOOMFILTER_K 16
+
+
+
#if 0 /* keep Emacsens' auto-indent happy */
{
#endif
#endif
+
+/** @} */ /* end of group */