config.h

基于sip协议的网络电话源码

/* $Id: config.h 1033 2007-03-02 14:51:03Z bennylp $ */
/* 
 * Copyright (C) 2003-2007 Benny Prijono <[e-mail]>
 *
 * This program 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 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
 */
#ifndef __PJLIB_UTIL_CONFIG_H__
#define __PJLIB_UTIL_CONFIG_H__


/**
 * @file config.h
 * @brief Compile time settings
 */

/**
 * @defgroup PJLIB_UTIL_CONFIG PJLIB-UTIL Configuration
 * @ingroup PJLIB_UTIL
 * @{
 */


/* **************************************************************************
 * DNS CONFIGURATION
 */

/**
 * This constant specifies the maximum names to keep in the temporary name
 * table when performing name compression scheme when duplicating DNS packet
 * (the #pj_dns_packet_dup() function).
 *
 * Generally name compression is desired, since it saves some memory (see
 * PJ_DNS_RESOLVER_RES_BUF_SIZE setting). However it comes at the expense of 
 * a little processing overhead to perform name scanning and also a little
 * bit more stack usage (8 bytes per entry on 32bit platform).
 *
 * Default: 16
 */
#ifndef PJ_DNS_MAX_NAMES_IN_NAMETABLE
#   define PJ_DNS_MAX_NAMES_IN_NAMETABLE	    16
#endif


/* **************************************************************************
 * RESOLVER CONFIGURATION
 */


/**
 * Maximum numbers of DNS nameservers that can be configured in resolver.
 */
#ifndef PJ_DNS_RESOLVER_MAX_NS
#   define PJ_DNS_RESOLVER_MAX_NS		    16
#endif


/**
 * Default retransmission delay, in miliseconds. The combination of 
 * retransmission delay and count determines the query timeout.
 *
 * Default: 2000 (2 seconds, according to RFC 1035)
 */
#ifndef PJ_DNS_RESOLVER_QUERY_RETRANSMIT_DELAY
#   define PJ_DNS_RESOLVER_QUERY_RETRANSMIT_DELAY   2000
#endif


/**
 * Maximum number of transmissions before timeout is declared for
 * the query.
 *
 * Default: 5
 */
#ifndef PJ_DNS_RESOLVER_QUERY_RETRANSMIT_COUNT
#   define PJ_DNS_RESOLVER_QUERY_RETRANSMIT_COUNT   5
#endif


/**
 * Maximum life-time of DNS response in the resolver response cache, 
 * in seconds. If the value is zero, then DNS response caching will be 
 * disabled.
 *
 * Default is 300 seconds (5 minutes).
 *
 * @see PJ_DNS_RESOLVER_INVALID_TTL
 */
#ifndef PJ_DNS_RESOLVER_MAX_TTL
#   define PJ_DNS_RESOLVER_MAX_TTL		    (5*60)
#endif

/**
 * The life-time of invalid DNS response in the resolver response cache.
 * An invalid DNS response is a response which RCODE is non-zero and 
 * response without any answer section. These responses can be put in 
 * the cache too to minimize message round-trip.
 *
 * Default: 60 (one minute).
 *
 * @see PJ_DNS_RESOLVER_MAX_TTL
 */
#ifndef PJ_DNS_RESOLVER_INVALID_TTL
#   define PJ_DNS_RESOLVER_INVALID_TTL		    60
#endif

/**
 * The interval on which nameservers which are known to be good to be 
 * probed again to determine whether they are still good. Note that
 * this applies to both active nameserver (the one currently being used)
 * and idle nameservers (good nameservers that are not currently selected).
 * The probing to query the "goodness" of nameservers involves sending
 * the same query to multiple servers, so it's probably not a good idea
 * to send this probing too often.
 *
 * Default: 600 (ten minutes)
 *
 * @see PJ_DNS_RESOLVER_BAD_NS_TTL
 */
#ifndef PJ_DNS_RESOLVER_GOOD_NS_TTL
#   define PJ_DNS_RESOLVER_GOOD_NS_TTL		    (10*60)
#endif

/**
 * The interval on which nameservers which known to be bad to be probed
 * again to determine whether it is still bad.
 *
 * Default: 60 (one minute)
 *
 * @see PJ_DNS_RESOLVER_GOOD_NS_TTL
 */
#ifndef PJ_DNS_RESOLVER_BAD_NS_TTL
#   define PJ_DNS_RESOLVER_BAD_NS_TTL		    (1*60)
#endif


/**
 * Maximum size of UDP packet. RFC 1035 states that maximum size of
 * DNS packet carried over UDP is 512 bytes.
 *
 * Default: 512 byes
 */
#ifndef PJ_DNS_RESOLVER_MAX_UDP_SIZE
#   define PJ_DNS_RESOLVER_MAX_UDP_SIZE		    512
#endif


/**
 * Size of memory pool allocated for each individual DNS response cache.
 * This value here should be more or less the same as maximum UDP packet
 * size (PJ_DNS_RESOLVER_MAX_UDP_SIZE), since the DNS replicator function
 * (#pj_dns_packet_dup()) is also capable of performing name compressions.
 *
 * Default: 512 (as a broad guidance, 400 is good for 4 SRV entries).
 */
#ifndef PJ_DNS_RESOLVER_RES_BUF_SIZE
#   define PJ_DNS_RESOLVER_RES_BUF_SIZE		    512
#endif


/**
 * Size of temporary pool buffer for parsing DNS packets in resolver.
 *
 * default: 4000
 */
#ifndef PJ_DNS_RESOLVER_TMP_BUF_SIZE
#   define PJ_DNS_RESOLVER_TMP_BUF_SIZE		    4000
#endif


/* **************************************************************************
 * SCANNER CONFIGURATION
 */


/**
 * Macro PJ_SCANNER_USE_BITWISE is defined and non-zero (by default yes)
 * will enable the use of bitwise for character input specification (cis).
 * This would save several kilobytes of .bss memory in the SIP parser.
 */
#ifndef PJ_SCANNER_USE_BITWISE
#  define PJ_SCANNER_USE_BITWISE		    1
#endif



/* **************************************************************************
 * STUN CLIENT CONFIGURATION
 */

/**
 * Maximum number of attributes in the STUN packet.
 *
 * Default: 16
 */
#ifndef PJ_STUN_MAX_ATTR
#   define PJ_STUN_MAX_ATTR			    16
#endif


/**
 * @}
 */

#endif	/* __PJLIB_UTIL_CONFIG_H__ */