note when ICP service is disabled

[thirdparty/squid.git] / src / cf.data.pre

#
# $Id: cf.data.pre,v 1.102 1998/09/09 17:47:09 wessels Exp $
#
#
# SQUID Internet Object Cache  http://squid.nlanr.net/Squid/
# ----------------------------------------------------------
#
#  Squid is the result of efforts by numerous individuals from the
#  Internet community.  Development is led by Duane Wessels of the
#  National Laboratory for Applied Network Research and funded by the
#  National Science Foundation.  Squid is Copyrighted (C) 1998 by
#  Duane Wessels and the University of California San Diego.  Please
#  see the COPYRIGHT file for full details.  Squid incorporates
#  software developed and/or copyrighted by other sources.  Please see
#  the CREDITS file for full details.
#
#  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, USA.
#

COMMENT_START
	WELCOME TO SQUID 1.2
	--------------------

	This is the default Squid configuration file. You may wish
	to look at http://cache.is.co.za/squid/ for documentation,
	or the Squid home page (http://squid.nlanr.net/) for the FAQ.

COMMENT_END

COMMENT_START
 NETWORK OPTIONS
 -----------------------------------------------------------------------------
COMMENT_END

NAME: http_port ascii_port
TYPE: ushortlist
DEFAULT: none
DEFAULT_IF_NONE: 3128
LOC: Config.Port.http
DOC_START
	The port number where Squid will listen for HTTP client
	requests.  Default is 3128, for httpd-accel mode use port 80.
	May be overridden with -a on the command line.

	You may specify multiple ports here, but they MUST all be on
	a single line.

http_port 3128
DOC_END


NAME: icp_port udp_port
TYPE: ushort
DEFAULT: 3130
LOC: Config.Port.icp
DOC_START
	The port number where Squid sends and receives ICP requests to
	and from neighbor caches.  Default is 3130.  To disable use
	"0".  May be overridden with -u on the command line.

icp_port 3130
DOC_END

NAME: htcp_port
IFDEF: USE_HTCP
TYPE: ushort
DEFAULT: 4827
LOC: Config.Port.htcp
DOC_START
	The port number where Squid sends and receives ICP requests to
	and from neighbor caches.  Default is 4827.  To disable use
	"0".

htcp_port 4827
DOC_END


NAME: mcast_groups
TYPE: wordlist
LOC: Config.mcast_group_list
DEFAULT: none
DOC_START
	This tag specifies a list of multicast groups which your server
	should join to receive multicasted ICP requests.

	NOTE!  Be very careful what you put here!  Be sure you
	understand the difference between an ICP _query_ and an ICP
	_reply_.  This option is to be set only if you want to RECEIVE
	multicast queries.  Do NOT set this option to SEND multicast
	ICP (use cache_peer for that).  ICP replies are always sent via
	unicast, so this option does not affect whether or not you will
	receive replies from multicast group members.

	You must be very careful to NOT use a multicast address which
	is already in use by another group of caches.  NLANR has been
	assigned a block of multicast address space for use in Web
	Caching.  Plese write to us at nlanr-cache@nlanr.net to receive
	an address for your own use.

	If you are unsure about multicast, please read the Multicast
	chapter in the Squid FAQ (http://squid.nlanr.net/Squid/FAQ/).

	Usage: mcast_groups 239.128.16.128 224.0.1.20

	By default, Squid doesn't listen on any multicast groups.

mcast_groups 239.128.16.128
DOC_END


NAME: tcp_incoming_address bind_address
TYPE: address
LOC: Config.Addrs.tcp_incoming
DEFAULT: 0.0.0.0
DOC_NONE

NAME: tcp_outgoing_address outbound_address
TYPE: address
LOC: Config.Addrs.tcp_outgoing
DEFAULT: 255.255.255.255
DOC_NONE

NAME: udp_incoming_address
TYPE: address
LOC:Config.Addrs.udp_incoming
DEFAULT: 0.0.0.0
DOC_NONE

NAME: udp_outgoing_address
TYPE: address
LOC: Config.Addrs.udp_outgoing
DEFAULT: 255.255.255.255
DOC_START
	Usage: tcp_incoming_address 10.20.30.40
	       udp_outgoing_address fully.qualified.domain.name

	tcp_incoming_address	is used for the HTTP socket which accepts
				connections from clients and other caches.
	tcp_outgoing_address	is used for connections made to remote
				servers and other caches.
	udp_incoming_address	is used for the ICP socket receiving packets
				from other caches.
	udp_outgoing_address	is used for ICP packets sent out to other
				caches.

	The default behaviour is to not bind to any specific address.

	NOTE, udp_incoming_address and udp_outgoing_address can not have
	the same value since they both use port 3130.

tcp_incoming_address 0.0.0.0
tcp_outgoing_address 0.0.0.0
udp_incoming_address 0.0.0.0
udp_outgoing_address 0.0.0.0
DOC_END

COMMENT_START
 OPTIONS WHICH AFFECT THE NEIGHBOR SELECTION ALGORITHM
 -----------------------------------------------------------------------------
COMMENT_END

NAME: cache_peer
TYPE: peer
DEFAULT: none
LOC: Config.peers
DOC_START
	To specify other caches in a hierarchy, use the format:

		hostname type http_port icp_port

	For example,

	#                                        proxy  icp
	#          hostname             type     port   port  options
	#          -------------------- -------- ----- -----  -----------
	cache_peer parent.foo.net       parent    3128  3130  [proxy-only]
	cache_peer sib1.foo.net         sibling   3128  3130  [proxy-only]
	cache_peer sib2.foo.net         sibling   3128  3130  [proxy-only]

	      type:  either 'parent', 'sibling', or 'multicast'.

	proxy_port:  The port number where the cache listens for proxy
		     requests.

	  icp_port:  Used for querying neighbor caches about
		     objects.  To have a non-ICP neighbor
		     specify '7' for the ICP port and make sure the
		     neighbor machine has the UDP echo port
		     enabled in its /etc/inetd.conf file.

	    options: proxy-only
		     weight=n
		     ttl=n
		     no-query
		     default
		     round-robin
		     multicast-responder
		     closest-only
		     no-netdb-exchange
		     no-delay

		     use 'proxy-only' to specify that objects fetched
		     from this cache should not be saved locally.

		     use 'weight=n' to specify a weighted parent.
		     The weight must be an integer.  The default weight
		     is 1, larger weights are favored more.

		     use 'ttl=n' to specify a IP multicast TTL to use
		     when sending an ICP request to this address.
		     Only useful when sending to a multicast group.
		     Because we don't accept ICP replies from random
		     hosts, you must configure other group members as
		     peers with the 'multicast-responder' option below.

		     use 'no-query' to NOT send ICP queries to this
		     neighbor.

		     use 'default' if this is a parent cache which can
		     be used as a "last-resort." You should probably
		     only use 'default' in situations where you cannot
		     use ICP with your parent cache(s).

		     use 'round-robin' to define a set of parents which
		     should be used in a round-robin fashion in the
		     absence of any ICP queries.

		     'multicast-responder' indicates that the named peer
		     is a member of a multicast group.  ICP queries will
		     not be sent directly to the peer, but ICP replies
		     will be accepted from it.

		     'closest-only' indicates that, for ICP_OP_MISS
		     replies, we'll only forward CLOSEST_PARENT_MISSes
		     and never FIRST_PARENT_MISSes.

		     'no-netdb-exchange' disables requesting ICMP
		     RTT database (NetDB) from the neighbor.

		     use 'no-delay' to prevent access to this neighbor
		     from influencing the delay pools.

	NOTE: non-ICP neighbors must be specified as 'parent'.

cache_peer hostname type 3128 3130
DOC_END


NAME: cache_peer_domain cache_host_domain
TYPE: hostdomain
DEFAULT: none
LOC: none
DOC_START
	Use to limit the domains for which a neighbor cache will be
	queried.  Usage:

	cache_peer_domain cache-host domain [domain ...]
	cache_peer_domain cache-host !domain

	For example, specifying

		cache_peer_domain parent.foo.net	.edu

	has the effect such that UDP query packets are sent to
	'bigserver' only when the requested object exists on a
	server in the .edu domain.  Prefixing the domainname
	with '!' means that the cache will be queried for objects
	NOT in that domain.

	NOTE:	* Any number of domains may be given for a cache-host,
		  either on the same or separate lines.
		* When multiple domains are given for a particular
		  cache-host, the first matched domain is applied.
		* Cache hosts with no domain restrictions are queried
		  for all requests.
		* There are no defaults.
		* There is also a 'cache_peer_acl' tag in the ACL
		  section.
DOC_END


NAME: neighbor_type_domain
TYPE: hostdomaintype
DEFAULT: none
LOC: none
DOC_START
	usage: neighbor_type_domain parent|sibling domain domain ...

	Modifying the neighbor type for specific domains is now
	possible.  You can treat some domains differently than the the
	default neighbor type specified on the 'cache_peer' line.
	Normally it should only be necessary to list domains which
	should be treated differently because the default neighbor type
	applies for hostnames which do not match domains listed here.

EXAMPLE:
	cache_peer  parent cache.foo.org 3128 3130
	neighbor_type_domain cache.foo.org sibling .com .net
	neighbor_type_domain cache.foo.org sibling .au .de
DOC_END

NAME: icp_query_timeout
COMMENT: (msec)
DEFAULT: 0
TYPE: int
LOC: Config.Timeout.icp_query
DOC_START
	Normally Squid will automatically determine an optimal ICP
	query timeout value based on the round-trip-time of recent ICP
	queries.  If you want to override the value determined by
	Squid, set this 'icp_query_timeout' to a non-zero value.  This
	value is specified in MILLISECONDS, so, to use a 2-second
	timeout (the old default), you would write:

		icp_query_timeout 2000

icp_query_timeout 0
DOC_END

NAME: mcast_icp_query_timeout
COMMENT: (msec)
DEFAULT: 2000
TYPE: int
LOC: Config.Timeout.mcast_icp_query
DOC_START
	For Multicast peers, Squid regularly sends out ICP "probes" to
	count how many other peers are listening on the given multicast
	address.  This value specifies how long Squid should wait to
	count all the replies.  The default is 2000 msec, or 2
	seconds.

mcast_icp_query_timeout 2000
DOC_END

NAME: dead_peer_timeout
COMMENT: (seconds)
DEFAULT: 10 seconds
TYPE: time_t
LOC: Config.Timeout.deadPeer
DOC_START
	This controls how long Squid waits to declare a peer cache
	as "dead."  If there are no ICP replies received in this
	amount of time, Squid will declare the peer dead and not
	expect to receive any further ICP replies.  However, it
	continues to send ICP queries, and will mark the peer as
	alive upon receipt of the first subsequent ICP reply.

dead_peer_timeout 10 seconds
DOC_END


NAME: hierarchy_stoplist
TYPE: wordlist
DEFAULT: none
DEFAULT_IF_NONE: cgi-bin ?
LOC: Config.hierarchy_stoplist
DOC_START
	A list of words which, if found in a URL, cause the object to
	be handled directly by this cache.  In other words, use this
	to not query neighbor caches for certain objects.  You may
	list this option multiple times.

	The default is to directly fetch URLs containing 'cgi-bin' or '?'.

hierarchy_stoplist cgi-bin ?
DOC_END


NAME: no_cache
TYPE: acl_access
DEFAULT: none
LOC: Config.accessList.noCache
DOC_START
	A list of ACL elements which, if matched, cause the reply to
	immediately removed from the cache.  In other words, use this
	to force certain objects to never be cached.

	You must use the word 'DENY' to indicate the ACL names which should
	NOT be cached.

	There is no default.  We recommend you uncomment the following
	two lines.

acl QUERY urlpath_regex cgi-bin \?
no_cache deny QUERY
DOC_END


COMMENT_START
 OPTIONS WHICH AFFECT THE CACHE SIZE
 -----------------------------------------------------------------------------
COMMENT_END

NAME: cache_mem
COMMENT: (bytes)
TYPE: b_size_t
DEFAULT: 8 MB
LOC: Config.Mem.maxSize
DOC_START
	NOTE: THIS PARAMETER DOES NOT SPECIFY THE MAXIMUM PROCESS
	SIZE.  IT PLACES A LIMIT ON ONE ASPECT OF SQUID'S MEMORY
	USAGE.  SQUID USES MEMORY FOR OTHER THINGS AS WELL.
	YOUR PROCESS WILL PROBABLY BECOME TWICE OR THREE TIMES
	BIGGER THAN THE VALUE YOU PUT HERE 

	'cache_mem' specifies the ideal amount of memory to be used
	for:
		* In-Transit objects
		* Hot Objects
		* Negative-Cached objects

	Data for these objects are stored in 4 KB blocks.  This
	parameter specifies the ideal upper limit on the total size of
	4 KB blocks allocated.  In-Transit objects take the highest
	priority.

	In-transit objects have priority over the others.  When
	additional space is needed for incoming data, negative-cached
	and hot objects will be released.  In other words, the
	negative-cached and hot objects will fill up any unused space
	not needed for in-transit objects.

	If circumstances require, this limit will be exceeded.
	Specifically, if your incoming request rate requires more than
	'cache_mem' of memory to hold in-transit objects, Squid will
	exceed this limit to satisfy the new requests.  When the load
	decreases, blocks will be freed until the high-water mark is
	reached.  Thereafter, blocks will be used to store hot
	objects.

	The values of cache_mem_low and cache_mem_high (below) can be
	used to tune the use of the memory pool.  When the high mark is
	reached, in-transit and hot objects will be released to clear
	space.  When an object transfer is completed, it will remain in
	memory only if the current memory usage is below the low water
	mark.

	The default is 8 Megabytes.

cache_mem  8 MB
DOC_END


NAME: cache_swap_low
COMMENT: (percent, 0-100)
TYPE: int
DEFAULT: 90
LOC: Config.Swap.lowWaterMark
DOC_NONE

NAME: cache_swap_high
COMMENT: (percent, 0-100)
TYPE: int
DEFAULT: 95
LOC: Config.Swap.highWaterMark
DOC_START
	The low- and high-water marks for cache LRU replacement.  LRU
	replacement begins when the high-water mark is reached and ends
	when enough objects have been removed and the low-water mark is
	reached. Defaults are 90% and 95%. If you have a large cache, 5%
	could be hundreds of MB. If this is the case you may wish to
	set these numbers closer together.

cache_swap_low  90
cache_swap_high 95
DOC_END


NAME: cache_mem_low
COMMENT: (in percent, 0-100)
TYPE: int
DEFAULT: 75
LOC: Config.Mem.lowWaterMark
DOC_NONE

NAME: cache_mem_high
COMMENT: (in percent, 0-100)
TYPE: int
DEFAULT: 95
LOC: Config.Mem.highWaterMark
DOC_START
	The low- and high-water mark for cache memory storage.  When
	the amount of RAM used by the hot-object RAM cache reaches this
	point, the cache starts throwing objects out of the RAM cache
	(but they remain on disk).  Defaults are 75% and 90%.

cache_mem_low  75
cache_mem_high 90
DOC_END


NAME: maximum_object_size
COMMENT: (bytes)
TYPE: b_size_t
DEFAULT: 4096 KB
LOC: Config.Store.maxObjectSize
DOC_START
	Objects larger than this size will NOT be saved on disk.  The
	value is specified in kilobytes, and the default is 4MB.  If
	you wish to get a high BYTES hit ratio, you should probably
	increase this (one 32 MB object hit counts for 3200 10KB
	hits).  If you wish to increase speed more than your want to
	save bandwidth you should leave this low.

maximum_object_size 4096 KB
DOC_END


NAME: ipcache_size
COMMENT: (number of entries)
TYPE: int
DEFAULT: 1024
LOC: Config.ipcache.size
DOC_NONE

NAME: ipcache_low
COMMENT: (percent)
TYPE: int
DEFAULT: 90
LOC: Config.ipcache.low
DOC_NONE

NAME: ipcache_high
COMMENT: (percent)
TYPE: int
DEFAULT: 95
LOC: Config.ipcache.high
DOC_START
	The size, low-, and high-water marks for the IP cache.

ipcache_size 1024
ipcache_low  90
ipcache_high 95
DOC_END

NAME: fqdncache_size
COMMENT: (number of entries)
TYPE: int
DEFAULT: 1024
LOC: Config.fqdncache.size
DOC_START
	Maximum number of FQDN cache entries.
fqdncache_size 1024
DOC_END

COMMENT_START
 LOGFILE PATHNAMES AND CACHE DIRECTORIES
 -----------------------------------------------------------------------------
COMMENT_END

NAME: cache_dir
TYPE: cachedir
DEFAULT: none
DEFAULT_IF_NONE: @DEFAULT_SWAP_DIR@ 100 16 256
LOC: Config.cacheSwap
DOC_START
	Usage:
	
	cache_dir Directory-Name Mbytes Level-1 Level2

	You can specify multiple cache_dir lines to spread the
	cache among different disk partitions.

	'Directory' is a top-level directory where cache swap
	files will be stored.  If you want to use an entire disk
	for caching, then this can be the mount-point directory.
	The directory must exist and be writable by the Squid
	process.  Squid will NOT create this directory for you.

	If no 'cache_dir' lines are specified, the following
	default will be used: @DEFAULT_SWAP_DIR@.

	'Mbytes' is the amount of disk space (MB) to use under this
	directory.  The default is 100 MB.  Change this to suit your
	configuration.

	'Level-1' is the number of first-level subdirectories which
	will be created under the 'Directory'.  The default is 16.

	'Level-2' is the number of second-level subdirectories which
	will be created under each first-level directory.  The default
	is 256.

cache_dir @DEFAULT_SWAP_DIR@ 100 16 256
DOC_END


NAME: cache_access_log
TYPE: string
DEFAULT: @DEFAULT_ACCESS_LOG@
LOC: Config.Log.access
DOC_START
	Logs the client request activity.  Contains an entry for
	every HTTP and ICP request received.

cache_access_log @DEFAULT_ACCESS_LOG@
DOC_END


NAME: cache_log
TYPE: string
DEFAULT: @DEFAULT_CACHE_LOG@
LOC: Config.Log.log
DOC_START
	Cache logging file. This is where general information about
	your cache's behaviour goes. You can increase the amount of data
	logged to this file with the "debug_options" tag below.

cache_log @DEFAULT_CACHE_LOG@
DOC_END


NAME: cache_store_log
TYPE: string
DEFAULT: @DEFAULT_STORE_LOG@
LOC: Config.Log.store
DOC_START
	Logs the activities of the storage manager.  Shows which
	objects are ejected from the cache, and which objects are
	saved and for how long.  To disable, enter "none". There are
	not really utilities to analyse this data, so you can safely
	disable it.

cache_store_log @DEFAULT_STORE_LOG@
DOC_END


NAME: cache_swap_log
TYPE: string
LOC: Config.Log.swap
DEFAULT: none
DOC_START
	Location for the cache "swap.log."  This log file holds the
	metadata of objects saved on disk.  It is used to rebuild the
	cache during startup.  Normally this file resides in the first
	'cache_dir' directory, but you may specify an alternate
	pathname here.  Note you must give a full filename, not just
	a directory. Since this is the index for the whole object
	list you CANNOT periodically rotate it!

cache_swap_log
DOC_END


NAME: emulate_httpd_log
COMMENT: on|off
TYPE: onoff
DEFAULT: off
LOC: Config.onoff.common_log
DOC_START
	The Cache can emulate the log file format which many 'httpd'
	programs use.  To disable/enable this emulation, set
	emulate_httpd_log to 'off' or 'on'.  The default
	is to use the native log format since it includes useful
	information that Squid-specific log analysers use.

emulate_httpd_log off
DOC_END


NAME: mime_table
TYPE: string
DEFAULT: @DEFAULT_MIME_TABLE@
LOC: Config.mimeTablePathname
DOC_START
	Pathname to Squid's MIME table. You shouldn't need to change
	this, but the default file contains examples and formatting
	information if you do.

mime_table @DEFAULT_MIME_TABLE@
DOC_END


NAME: log_mime_hdrs
COMMENT: on|off
TYPE: onoff
LOC: Config.onoff.log_mime_hdrs
DEFAULT: off
DOC_START
	The Cache can record both the request and the response MIME
	headers for each HTTP transaction.  The headers are encoded
	safely and will appear as two bracketed fields at the end of
	the access log (for either the native or httpd-emulated log
	formats).  To enable this logging set log_mime_hdrs to 'on'.

log_mime_hdrs off
DOC_END


NAME: useragent_log
TYPE: string
LOC: Config.Log.useragent
DEFAULT: none
DOC_START
	If configured with the "--enable-useragent_log" configure
	option, Squid will write the User-Agent field from HTTP
	requests to the filename specified here.  By default
	useragent_log is disabled.

useragent_log none
DOC_END


NAME: pid_filename
TYPE: string
DEFAULT: @DEFAULT_PID_FILE@
LOC: Config.pidFilename
DOC_START
	A filename to write the process-id to.  To disable, enter "none".

pid_filename @DEFAULT_PID_FILE@
DOC_END


NAME: debug_options
TYPE: eol
DEFAULT: ALL,1
LOC: Config.debugOptions
DOC_START
	Logging options are set as section,level where each source file
	is assigned a unique section.  Lower levels result in less
	output,  Full debugging (level 9) can result in a very large
	log file, so be careful.  The magic word "ALL" sets debugging
	levels for all sections.  We recommend normally running with
	"ALL,1".

debug_options ALL,1
DOC_END


NAME: ident_lookup
COMMENT: on|off
TYPE: onoff
DEFAULT: off
LOC: Config.onoff.ident_lookup
DOC_START
	If you wish to make an RFC931/ident lookup of the client
	username for each connection, enable this.  It is off by
	default.

ident_lookup off
DOC_END


NAME: log_fqdn
COMMENT: on|off
TYPE: onoff
DEFAULT: off
LOC: Config.onoff.log_fqdn
DOC_START
	Turn this on if you wish to log fully qualified domain names
	in the access.log. To do this Squid does a DNS lookup of all
	IP's connecting to it. This can (in some situations) increase
	latency, which makes your cache seem slower for interactive
	browsing. 

log_fqdn off
DOC_END


NAME: client_netmask
TYPE: address
LOC: Config.Addrs.client_netmask
DEFAULT: 255.255.255.255
DOC_START
	A netmask for client addresses in logfiles and cachemgr output.
	Change this to protect the privacy of your cache clients.
	A netmask of 255.255.255.0 will log all IP's in that range with
	the last digit set to '0'.

client_netmask 255.255.255.255
DOC_END


COMMENT_START
 OPTIONS FOR EXTERNAL SUPPORT PROGRAMS
 -----------------------------------------------------------------------------
COMMENT_END

NAME: ftp_user
TYPE: string
DEFAULT: Squid@
LOC: Config.Ftp.anon_user
DOC_START
	If you want the anonymous login password to be more informative
	(and enable the use of picky ftp servers), set this to something
	resonable for your domain, like wwwuser@somewhere.net

	The reason why this is domainless by default is that the
	request can be made on the behalf of a user in any domain,
	depending on how the cache is used.
	Some ftp server also validate that the email address is valid
	(for example perl.com).

ftp_user Squid@
DOC_END

NAME: ftp_list_width
TYPE: size_t
DEFAULT: 32
LOC: Config.Ftp.list_width
DOC_START
	Sets the width of ftp listings. This should be set to fit in
	the width of a standard browser. Setting this too small
	can cut off long filenames when browsing ftp sites.

ftp_list_width 32
DOC_END

NAME: cache_dns_program
TYPE: string
DEFAULT: @DEFAULT_DNSSERVER@
LOC: Config.Program.dnsserver
DOC_START
	Specify the location of the executable for dnslookup process.

cache_dns_program @DEFAULT_DNSSERVER@
DOC_END

NAME: dns_children
TYPE: int
DEFAULT: 5
LOC: Config.dnsChildren
DOC_START
	The number of processes spawn to service DNS name lookups.
	For heavily loaded caches on large servers, you should
	probably increase this value to at least 10.  The maximum
	is 32.  The default is 5.

	To disable dnsservers, set this to 0.  NOTE, this is very
	strongly discouraged.  If you disable dnsservers your Squid
	process will BLOCK on DNS lookups!

dns_children 5
DOC_END


NAME: dns_defnames
COMMENT: on|off
TYPE: onoff
DEFAULT: off
LOC: Config.onoff.res_defnames
DOC_START
	Normally the 'dnsserver' disables the RES_DEFNAMES resolver
	option (see res_init(3)).  This prevents caches in a hierarchy
	from interpreting single-component hostnames locally.  To allow
	dnsserver to handle single-component names, enable this
	option.

dns_defnames off
DOC_END

NAME: dns_nameservers
TYPE: wordlist
DEFAULT: none
LOC: Config.dns_nameservers
DOC_START
	Use this if you want to specify a list of DNS name servers
	(IP addresses) to use instead of those given in your
	/etc/resolv.conf file.

	Example: dns_nameservers 10.0.0.1 192.172.0.4

dns_nameservers none
DOC_END


NAME: unlinkd_program
TYPE: string
DEFAULT: @DEFAULT_UNLINKD@
LOC: Config.Program.unlinkd
DOC_START
	Specify the location of the executable for file deletion process.
	This isn't needed if you are using async-io since it's handled by
	a thread.

unlinkd_program @DEFAULT_UNLINKD@
DOC_END


NAME: pinger_program
TYPE: string
DEFAULT: @DEFAULT_PINGER@
LOC: Config.Program.pinger
DOC_START
	Specify the location of the executable for the pinger process.
	This is only useful if you configured Squid (during compliation)
	with the '--enable-icmp' option.

pinger_program @DEFAULT_PINGER@
DOC_END


NAME: redirect_program
TYPE: string
LOC: Config.Program.redirect
DEFAULT: none
DOC_START
	Specify the location of the executable for the URL redirector.
	Since they can perform almost any function there isn't one included.
	See the Release-Notes for information on how to write one.
	By default, a redirector is not used.

redirect_program none
DOC_END


NAME: redirect_children
TYPE: int
DEFAULT: 5
LOC: Config.redirectChildren
DOC_START
	The number of redirector processes to spawn. If you start
	too few Squid will have to wait for them to process a backlog of
	URLs, slowing it down. If you start too many they will use RAM
	and other system resources.

redirect_children 5
DOC_END

NAME: authenticate_program
TYPE: wordlist
LOC: Config.Program.authenticate
DEFAULT: none
DOC_START
	Specify the command for the external authenticator.  Such a
	program reads a line containing "username password" and replies
	"OK" or "ERR" in an endless loop.  If you use an authenticator,
	make sure you have 1 acl of type proxy_auth.  By default, the
	authenticator_program is not used.

	If you want to use the traditional proxy authentication,
	jump over to the ../auth_modules/NCSA directory and
	type:
		% make
		% make install

	Then, set this line to something like

	authenticate_program @DEFAULT_PREFIX@/bin/ncsa_auth @DEFAULT_PREFIX@/etc/passwd

authenticate_program none
DOC_END

NAME: authenticate_children
TYPE: int
DEFAULT: 5
LOC: Config.authenticateChildren
DOC_START
	The number of authenticator processes to spawn (default 5). If you
	start too few Squid will have to wait for them to process a backlog
	of usercode/password verifications, slowing it down. When password
	verifications are done via a (slow) network you are likely to need
	lots of authenticator processes.

authenticate_children 5
DOC_END

COMMENT_START
 OPTIONS FOR TUNING THE CACHE
 -----------------------------------------------------------------------------
COMMENT_END

NAME: wais_relay_host
TYPE: string
DEFAULT: none
LOC: Config.Wais.relayHost
DOC_NONE

NAME: wais_relay_port
TYPE: ushort
DEFAULT: 0
LOC: Config.Wais.relayPort
DOC_START
	Relay WAIS request to host (1st arg) at port (2 arg).

wais_relay_host localhost
wais_relay_port 8000
DOC_END


NAME: request_size
COMMENT: (KB)
TYPE: b_size_t
DEFAULT: 100 KB
LOC: Config.maxRequestSize
DOC_START
	Maximum allowed request size in kilobytes.  If people are using
	POST to upload files, then set this to the largest acceptable
	filesize plus a few extra kbytes.

request_size 100 KB
DOC_END


NAME: refresh_pattern
TYPE: refreshpattern
LOC: Config.Refresh
DEFAULT: none
DOC_START
	usage: refresh_pattern regex min percent max [options]

	min and max are specified in MINUTES.
	percent is an integer number.

	options: override-expire
		 override-lastmod
		 reload-into-ims
		 ignore-reload

		override-expire enforces min age even if the server
		sent a Expires: header. Doing this VIOLATES the HTTP
		standard.  Enabling this feature could make you liable
		for problems which it causes.

		override-lastmod enforces min age even on objects
		that was modified recently.

		reload-into-ims changes client no-cache or ``reload''
		to If-Modified-Since requests. Doing this VIOLATES the
		HTTP standard. Enabling this feature could make you
		liable for problems which it causes.

		ignore-reload ignores a client no-cache or ``reload''
		header. Doing this VIOLATES the HTTP standard. Enabling
		this feature could make you liable for problems which
		it causes.
		
	Please see the file doc/Release-Notes-1.1.txt for a full
	description of Squid's refresh algorithm.  Basically a
	cached object is: (the order is changed from 1.1.X)

		STALE if age > max
		FRESH if expires < now, else STALE
		FRESH if lm-factor < percent, else STALE
		FRESH if age < min
		else STALE

	The refresh_pattern lines are checked in the order listed here.
	The first entry which matches is used.  If none of the entries
	match, then the default will be used.

Default:
refresh_pattern 	.	0 20% 4320
DOC_END


NAME: reference_age
TYPE: time_t
LOC: Config.referenceAge
DEFAULT: 1 year
DOC_START
	As a part of normal operation, Squid performs Least Recently
	Used removal of cached objects.  The LRU age for removal is
	computed dynamically, based on the amount of disk space in
	use.  The dynamic value can be seen in the Cache Manager 'info'
	output.

	The 'reference_age' parameter defines the maximum LRU age.  For
	example, setting reference_age to '1 week' will cause objects
	to be removed if they have not been accessed for a week or
	more.  The default value is one month.

	Specify a number here, followed by units of time.  For example:
		1 week
		3.5 days
		4 months
		2.2 hours

reference_age 1 month
DOC_END


NAME: quick_abort_min
COMMENT: (KB)
TYPE: kb_size_t
DEFAULT: -1 kb
LOC: Config.quickAbort.min
DOC_NONE

NAME: quick_abort_pct
COMMENT: (percent)
TYPE: int
DEFAULT: 0
LOC: Config.quickAbort.pct
DOC_NONE

NAME: quick_abort_max
COMMENT: (KB)
TYPE: kb_size_t
DEFAULT: 0 kb
LOC: Config.quickAbort.max
DOC_START
	The cache can be configured to continue downloading aborted
	requests.  This may be undesirable on slow (e.g. SLIP) links
	and/or very busy caches.  Impatient users may tie up file
	descriptors and bandwidth by repeatedly requesting and
	immediately aborting downloads.

	When the user aborts a request, Squid will check the
	quick_abort values to the amount of data transfered until
	then.

	If the transfer has less than 'quick_abort_min' KB remaining,
	it will finish the retrieval.  Setting 'quick_abort_min' to -1
	will disable the quick_abort feature.

	If more than 'quick_abort_pct' of the transfer has completed,
	it will finish the retrieval.

	If the transfer has more than 'quick_abort_max' KB remaining,
	it will abort the retrieval.

quick_abort_min -1 KB
quick_abort_pct 0
quick_abort_max 0 KB
DOC_END


NAME: negative_ttl
COMMENT: time-units
TYPE: time_t
LOC: Config.negativeTtl
DEFAULT: 5 minutes
DOC_START
	Time-to-Live (TTL) for failed requests.  Certain types of
	failures (such as "connection refused" and "404 Not Found") are
	negatively-cached for a configurable amount of time.  The
	default is 5 minutes.  Note that this is different from
	negative caching of DNS lookups.

negative_ttl 5 minutes
DOC_END


NAME: positive_dns_ttl
COMMENT: time-units
TYPE: time_t
LOC: Config.positiveDnsTtl
DEFAULT: 6 hours
DOC_START
	Time-to-Live (TTL) for positive caching of successful DNS lookups.
	Default is 6 hours (360 minutes).  If you want to minimize the
	use of Squid's ipcache, set this to 1, not 0.

positive_dns_ttl 6 hours
DOC_END


NAME: negative_dns_ttl
COMMENT: time-units
TYPE: time_t
LOC: Config.negativeDnsTtl
DEFAULT: 5 minutes
DOC_START
	Time-to-Live (TTL) for negative caching of failed DNS lookups.

negative_dns_ttl 5 minutes
DOC_END

COMMENT_START
 TIMEOUTS
 -----------------------------------------------------------------------------
COMMENT_END

NAME: connect_timeout
COMMENT: time-units
TYPE: time_t
LOC: Config.Timeout.connect
DEFAULT: 2 minutes
DOC_START
	Some systems (notably Linux) can not be relied upon to properly
	time out connect(2) requests.  Therefore the Squid process
	enforces its own timeout on server connections.  This parameter
	specifies how long to wait for the connect to complete.  The
	default is two minutes (120 seconds).

connect_timeout 120 seconds
DOC_END

NAME: siteselect_timeout
COMMENT: time-units
TYPE: time_t
LOC: Config.Timeout.siteSelect
DEFAULT: 4 seconds
DOC_START
	For URN to multiple URL's URL selection

siteselect_timeout 4 seconds
DOC_END

NAME: read_timeout
COMMENT: time-units
TYPE: time_t
LOC: Config.Timeout.read
DEFAULT: 15 minutes
DOC_START
	The read_timeout is applied on server-side connections.  After
	each successful read(), the timeout will be extended by this
	amount.  If no data is read again after this amount of time,
	the request is aborted and logged with ERR_READ_TIMEOUT.  The
	default is 15 minutes.

read_timeout 15 minutes
DOC_END


NAME: request_timeout
TYPE: time_t
LOC: Config.Timeout.request
DEFAULT: 30 seconds
DOC_START
	How long to wait for an HTTP request after connection
	establishment.  For persistent connections, wait this long
	after the previous request completes.

request_timeout 30 seconds
DOC_END


NAME: client_lifetime
COMMENT: time-units
TYPE: time_t
LOC: Config.Timeout.lifetime
DEFAULT: 1 day
DOC_START
	The maximum amount of time that a client (browser) is allowed to
	remain connected to the cache process.  This protects the Cache
	from having alot of sockets (and hence file descriptors) tied up
	in a CLOSE_WAIT state from remote clients that go away without
	properly shutting down (either because of a network failure or
	because of a poor client implementation).  The default is one
	day, 1440 minutes.

	NOTE:  The default value is intended to be much larger than any
	client would ever need to be connected to your cache.  You
	should probably change client_lifetime only as a last resort.
	If you seem to have many client connections tying up
	filedescriptors, we recommend first tuning the read_timeout,
	request_timeout, pconn_timeout and quick_abort values.

client_lifetime 1 day
DOC_END

NAME: half_closed_clients
TYPE: onoff
LOC: Config.onoff.half_closed_clients
DEFAULT: on
DOC_START
	Some clients may shutdown the sending side of their TCP
	connections, while leaving their receiving sides open.	Sometimes,
	Squid can not tell the difference between a half-closed and a
	fully-closed TCP connection.  By default, half-closed client
	connections are kept open until a read(2) or write(2) on the
	socket returns an error.  Change this option to 'off' and Squid
	will immediately close client connections when read(2) returns
	"no more data to read."

half_closed_clients on
DOC_END

NAME: pconn_timeout
TYPE: time_t
LOC: Config.Timeout.pconn
DEFAULT: 120 seconds
DOC_START
	Timeout for idle persistent connections to servers and other
	proxies.
pconn_timeout 120 seconds
DOC_END


NAME: shutdown_lifetime
COMMENT: time-units
TYPE: time_t
LOC: Config.shutdownLifetime
DEFAULT: 30 seconds
DOC_START
	When SIGTERM or SIGHUP is received, the cache is put into
	"shutdown pending" mode until all active sockets are closed.
	This value is the lifetime to set for all open descriptors
	during shutdown mode.  Any active clients after this many
	seconds will receive a 'timeout' message.

shutdown_lifetime 30 seconds
DOC_END

COMMENT_START
 ACCESS CONTROLS
 -----------------------------------------------------------------------------
COMMENT_END

NAME: acl
TYPE: acl
LOC: Config.aclList
DEFAULT: none
DOC_START
	Defining an Access List

	acl aclname acltype string1 ...
	acl aclname acltype "file" ...

	when using "file", the file should contain one item per line

	acltype is one of src dst srcdomain dstdomain url_pattern
		urlpath_pattern time port proto method browser user

	acl aclname src      ip-address/netmask ... (clients IP address)
	acl aclname src      addr1-addr2/netmask ... (range of addresses)
	acl aclname dst      ip-address/netmask ... (URL host's IP address)

	acl aclname srcdomain   foo.com ...     # reverse lookup, client IP
	acl aclname dstdomain   foo.com ...     # Destination server from URL
	acl aclname srcdom_regex xxx ...        # regex matching client name
	acl aclname dstdom_regex xxx ...        # regex matching server
	  # For dstdomain and dstdom_regex  a reverse lookup is tried if a IP
	  # based URL is used. The name "none" is used if the reverse lookup
	  # fails.

	acl aclname time     [day-abbrevs]  [h1:m1-h2:m2]
	    day-abbrevs:
		S - Sunday
		M - Monday
		T - Tuesday
		W - Wednesday
		H - Thursday
		F - Friday
		A - Saturday
	    h1:m1 must be less than h2:m2
	acl aclname url_regex  ^http:// ...	# regex matching on whole URL
	acl aclname urlpath_regex  \.gif$ ...	# regex matching on URL path
	acl aclname port     80 70 21 ...
	acl aclname proto    HTTP FTP ...
	acl aclname method   GET POST ...
	acl aclname browser  regexp
	acl aclname user     username ...	# string match on ident output.
						# use REQUIRED to accept any
						# non-null ident.
	acl aclname src_as   number ... 
	acl aclname dst_as   number ...
	  # Except for access control, AS numbers can be used for
	  # routing of requests to specific caches. Here's an 
	  # example for routing all requests for AS#1241 and only 
	  # those to mycache.mydomain.net:
	  # acl asexample dst_as 1241
	  # cache_peer_acl mycache.mydomain.net asexample
	  # cache_peer_acl mycache_mydomain.net !all

	acl aclname proxy_auth [ refresh ]
	  # Use an EXTERNAL authentication program to check username/password
	  # combinations (see authenticate_program).
	  #
	  # 'timeout' is the time a checked username/password combination
	  # remains cached (default = 3600 secs). If a wrong password
	  # is given for a cached user, the user gets removed from the
	  # username/password cache forcing a revalidation.
	  #
	  # When using a proxy_auth ACL in an http_access rule, make sure
	  # it is the *last* in the list and the only proxy_auth ACL in
	  # the list.
	  #
	  # NOTE: when a Proxy-Authentication header is sent but it is not
	  # needed during ACL checking the username is NOT logged
	  # in access.log.

acl manager proto cache_object
acl localhost src 127.0.0.1/255.255.255.255
acl all src 0.0.0.0/0.0.0.0
acl myexample dst_as 1241
acl SSL_ports port 443 563
acl Dangerous_ports port 7 9 19
acl CONNECT method CONNECT
acl password proxy_auth 300
DOC_END

NAME: http_access
TYPE: acl_access
LOC: Config.accessList.http
DEFAULT: none
DOC_START
	Allowing or Denying access based on defined access lists

	Access to the HTTP port:
	http_access allow|deny [!]aclname ...

	Access to the ICP port:
	icp_access  allow|deny [!]aclname ...

	NOTE on default values:

	If there are no "access" lines present, the default is to allow
	the request.

	If none of the "access" lines cause a match, the default is the
	opposite of the last line in the list.  If the last line was
	deny, then the default is allow.  Conversely, if the last line
	is allow, the default will be deny.  For these reasons, it is a
	good idea to have an "deny all" or "allow all" entry at the end
	of your access lists to avoid potential confusion.


	Only allow access to the cache manager functions from the local host.
http_access deny manager !localhost
http_access deny CONNECT !SSL_ports
http_access deny Dangerous_ports

	Allow everything else
http_access allow  all
DOC_END


NAME: icp_access
TYPE: acl_access
LOC: Config.accessList.icp
DEFAULT: none
DOC_START
	Reply to all ICP queries we receive

icp_access  allow  all
DOC_END


NAME: miss_access
TYPE: acl_access
LOC: Config.accessList.miss
DEFAULT: none
DOC_START
	Use to force your neighbors to use you as a sibling instead of
	a parent.  For example:

		acl localclients src 172.16.0.0/16
		miss_access allow localclients
		miss_access deny  !localclients

	This means that only your local clients are allowed to fetch
	MISSES and all other clients can only fetch HITS.

	By default, allow all clients who passed the http_access rules
	to fetch MISSES from us.

miss_access allow  all
DOC_END


NAME: cache_peer_access
TYPE: peer_access
DEFAULT: none
LOC: none
DOC_START
	Similar to 'cache_peer_domain' but provides more flexibility by
	using ACL elements.

	cache_peer_access cache-host allow|deny [!]aclname ...

	The syntax is identical to 'http_access' and the other lists of
	ACL elements.  See the comments for 'http_access' below, or
	the Squid FAQ (http://squid.nlanr.net/Squid/FAQ/FAQ-10.html).
DOC_END

NAME: proxy_auth_realm
TYPE: eol
DEFAULT: Squid proxy-caching web server
LOC: Config.proxyAuthRealm
DOC_START
	Specifies the realm name which is to be reported to the client for
	proxy authentication (part of the text the user will see when
	prompted their username and password).

proxy_auth_realm Squid proxy-caching web server
DOC_END


COMMENT_START
 ADMINISTRATIVE PARAMETERS
 -----------------------------------------------------------------------------
COMMENT_END

NAME: cache_mgr
TYPE: string
DEFAULT: webmaster
LOC: Config.adminEmail
DOC_START
	Email-address of local cache manager who will receive
	mail if the cache dies.  The default is "webmaster."

cache_mgr webmaster
DOC_END


NAME: cache_effective_user
TYPE: string
DEFAULT: nobody
LOC: Config.effectiveUser
DOC_NONE

NAME: cache_effective_group
TYPE: string
DEFAULT: nogroup
LOC: Config.effectiveGroup
DOC_START
	If the cache is run as root, it will change its effective/real
	UID/GID to the UID/GID specified below.  The default is not to
	change UID/GID.

cache_effective_user nobody
cache_effective_group nogroup
DOC_END


NAME: visible_hostname
TYPE: string
LOC: Config.visibleHostname
DEFAULT: none
DOC_START
	If you want to present a special hostname in error messages, etc,
	then define this.  Otherwise, the return value of gethostname()
	will be used. If you have multiple caches in a cluster and
	get errors about IP-forwarding you must set them to have individual
	names with this setting.

visible_hostname www-cache.foo.org
DOC_END


NAME: unique_hostname
TYPE: string
LOC: Config.uniqueHostname
DEFAULT: none
DOC_START
	If you want to have multiple machines with the same
	'visible_hostname' then you must give each machine a different
	'unique_hostname' so that forwarding loops can be detected.

unique_hostname www-cache1.foo.org
DOC_END

COMMENT_START
 OPTIONS FOR THE CACHE REGISTRATION SERVICE
 -----------------------------------------------------------------------------

	This section contains parameters for the (optional) cache
	announcement service.  This service is provided to help
	cache administrators locate one another in order to join or
	create cache hierarchies.

	An 'announcement' message is sent (via UDP) to the registration
	service by Squid.  By default, the annoucement message is NOT
	SENT unless you enable it with 'announce_period' below.

	The announcement message includes your hostname, plus the
	following information from this configuration file:

		http_port
		icp_port
		cache_mgr

	All current information is processed regularly and made
	available on the Web at http://ircache.nlanr.net/Cache/Tracker/.
COMMENT_END

NAME: announce_period
TYPE: time_t
LOC: Config.Announce.period
DEFAULT: 0
DOC_START
	This is how frequently to send cache announcements.  The
	default is `0' which disables sending the announcement
	messages.

	To enable announcing your cache, just uncomment the line
	below.

announce_period 1 day
DOC_END


NAME: announce_host
TYPE: string
DEFAULT: tracker.ircache.net
LOC: Config.Announce.host
DOC_NONE

NAME: announce_file
TYPE: string
DEFAULT: none
LOC: Config.Announce.file
DOC_NONE

NAME: announce_port
TYPE: ushort
DEFAULT: 3131
LOC: Config.Announce.port
DOC_START
	announce_host and announce_port set the hostname and port
	number where the registration message will be sent.

	Hostname will default to 'tracker.ircache.net' and port will
	default default to 3131.  If the 'filename' argument is given,
	the contents of that file will be included in the announce
	message.

announce_host tracker.ircache.net
announce_port 3131
DOC_END

COMMENT_START
 HTTPD-ACCELERATOR OPTIONS
 -----------------------------------------------------------------------------
COMMENT_END

NAME: httpd_accel_host
TYPE: string
LOC: Config.Accel.host
DEFAULT: none
DOC_NONE

NAME: httpd_accel_port
TYPE: ushort
LOC: Config.Accel.port
DEFAULT: 80
DOC_START
	If you want to run Squid as an httpd accelerator, define the
	host name and port number where the real HTTP server is.

	If you want virtual host support then specify the hostname
	as "virtual".

	NOTE: enabling httpd_accel_host disables proxy-caching and
	ICP.  If you want these features enabled also, then set
	the 'httpd_accel_with_proxy' option.

httpd_accel_host hostname
httpd_accel_port port
DOC_END


NAME: httpd_accel_with_proxy
COMMENT: on|off
TYPE: onoff
DEFAULT: off
LOC: Config.onoff.accel_with_proxy
DOC_START
	If you want to use Squid as both a local httpd accelerator
	and as a proxy, change this to 'on'.

httpd_accel_with_proxy off
DOC_END


NAME: httpd_accel_uses_host_header
COMMENT: on|off
TYPE: onoff
DEFAULT: off
LOC: opt_accel_uses_host
DOC_START
	HTTP/1.1 requests include a Host: header which is basically the
	hostname from the URL.  Squid can be an accelerator for
	different HTTP servers by looking at this header.  However,
	Squid does NOT check the value of the Host header, so it opens
	a big security hole.  We recommend that this option remain
	disabled unless you are sure of what you are doing.

	However, you will need to enable this option if you run Squid
	as a transparent proxy.  Otherwise, virtual servers which
	require the Host: header will not be properly cached.
httpd_accel_uses_host_header off
DOC_END

COMMENT_START
 MISCELLANEOUS
 -----------------------------------------------------------------------------
COMMENT_END

NAME: dns_testnames
TYPE: wordlist
LOC: Config.dns_testname_list
DEFAULT: none
DOC_START
	The DNS tests exit as soon as the first site is successfully looked up

	If you want to disable DNS tests, do not comment out or delete this
	list.  Instead use the -D command line option

dns_testnames netscape.com internic.net nlanr.net microsoft.com
DOC_END


NAME: logfile_rotate
TYPE: int
DEFAULT: 10
LOC: Config.Log.rotateNumber
DOC_START
	Specifies the number of logfile rotations to make upon
	receiving a USR1 signal.  The default is 10, which will rotate
	with extensions 0 through 9.  Setting logfile_rotate to 0 will
	disable the rotation, but the logfiles are still closed and
	re-opened.  This will enable you to rename the logfiles
	yourself just before sending a USR1 signal to the Squid
	process.

logfile_rotate 10
DOC_END


NAME: append_domain
TYPE: string
LOC:  Config.appendDomain
DEFAULT: none
DOC_START
	Appends local domain name to hostnames without any dots in
	them.  append_domain must begin with a period.

append_domain .yourdomain.com
DOC_END


NAME: tcp_recv_bufsize
COMMENT: (bytes)
TYPE: b_size_t
DEFAULT: 0 bytes
LOC: Config.tcpRcvBufsz
DOC_START
	Size of receive buffer to set for TCP sockets.  Probably just
	as easy to change your kernel's default.  Set to zero to use
	the default buffer size.

tcp_recv_bufsize 0 bytes
DOC_END

NAME: err_html_text
TYPE: eol
LOC: Config.errHtmlText
DEFAULT: none
DOC_START
	HTML text to include in error messages.  Make this a "mailto"
	URL to your admin address, or maybe just a link to your
	organizations Web page.

err_html_text
DOC_END


NAME: deny_info
TYPE: denyinfo
LOC: Config.denyInfoList
DEFAULT: none
DOC_START
	Usage:   deny_info err_page_name acl
	Example: deny_info ERR_CUSTOM_ACCESS_DENIED bad_guys

	This can be used to return a ERR_ page for requests which
	do not pass the 'http_access' rules.  A single ACL will cause
	the http_access check to fail.  If a 'deny_info' line exists
	for that ACL then Squid returns a corresponding error page.

	You may use ERR_ pages that come with Squid or create your own pages
	and put them into the configured errors/ directory.
DOC_END

NAME: memory_pools
COMMENT: on|off
TYPE: onoff
DEFAULT: on
LOC: Config.onoff.mem_pools
DOC_START
	If set, Squid will keep pools of allocated (but unused) memory
	available for future use.  If memory is a premium on your
	system and you believe your malloc library outperforms Squid 
	routines, disable this.

memory_pools on
DOC_END

NAME: memory_pools_limit
COMMENT: (bytes)
TYPE: b_size_t
DEFAULT: none
LOC: Config.MemPools.limit
DOC_START
	Used only with memory_pools on:
	memory_pools_limit 50 MB

	If set to a non-zero value, Squid will keep at most the specified
	limit of allocated (but unused) memory in memory pools. All free()
	requests that exceed this limit will be handled by your malloc
	library. Squid does not pre-allocate any memory, just safe-keeps
	objects that otherwise would be free()d. Thus, it is safe to set
	memory_pools_limit to a reasonably high value even if your
	configuration will use less memory.

	If not set (default) or set to zero, Squid will keep all memory it
	can. That is, there will be no limit on the total amount of memory
	used for safe-keeping.

	To disable memory allocation optimization, do not set
	memory_pools_limit to 0. Set memory_pools to "off" instead.

	An overhead for maintaining memory pools is not taken into account
	when the limit is checked. This overhead is close to four bytes per
	object kept. However, pools may actually _save_ memory because of
	reduced memory thrashing in your malloc library.
DOC_END

NAME: forwarded_for
COMMENT: on|off
TYPE: onoff
DEFAULT: on
LOC: opt_forwarded_for
DOC_START
	If set, Squid will include your system's IP address or name
	in the HTTP requests it forwards.  By default it looks like
	this:

		X-Forwarded-For: 192.1.2.3

	If you disable this, it will appear as

		X-Forwarded-For: unknown

forwarded_for on
DOC_END

NAME: log_icp_queries
COMMENT: on|off
TYPE: onoff
DEFAULT: on
LOC: Config.onoff.log_udp
DOC_START
	If set, ICP queries are logged to access.log. You may wish
	do disable this if your ICP load is VERY high to speed things
	up or to simplify log analysis.

log_icp_queries on
DOC_END

NAME: icp_hit_stale
COMMENT: on|off
TYPE: onoff
DEFAULT: off
LOC: Config.onoff.icp_hit_stale
DOC_START
	If you want to return ICP_HIT for stale cache objects, set this
	option to 'on'.  If you have sibling relationships with caches
	in other administrative domains, this should be 'off'.  If you only
	have sibling relationships with caches under your control, then
	it is probably okay to set this to 'on'.

icp_hit_stale off
DOC_END


NAME: minimum_direct_hops
TYPE: int
DEFAULT: 4
LOC: Config.minDirectHops
DOC_START
	If using the ICMP pinging stuff, do direct fetches for sites
	which are no more than this many hops away.

minimum_direct_hops 4
DOC_END


NAME: cachemgr_passwd
TYPE: cachemgrpasswd
DEFAULT: none
LOC: Config.passwd_list
DOC_START
	Specify passwords for cachemgr operations.

	Usage: cachemgr_passwd password action action ...

	valid actions are:
		shutdown *
		info
		objects
		vm_objects
		utilization
		ipcache
		fqdncache
		dns
		redirector
		io
		reply_headers
		filedescriptors
		netdb
		server_list
		client_list
		config *

	* Indicates actions which will not be performed without a
	  valid password, others can be performed if not listed here.

	To disable an action, set the password to "disable".
	To allow performing an action without a password, set the
	password to "none".

	Use the keyword "all" to set the same password for all actions.

cachemgr_passwd secret shutdown
cachemgr_passwd lesssssssecret info stats/objects
cachemgr_passwd disable all
DOC_END

NAME: store_avg_object_size
COMMENT: (kbytes)
TYPE: kb_size_t
DEFAULT: 13 KB
LOC: Config.Store.avgObjectSize
DOC_START
	Average object size, used to estimate number of objects your
	cache can hold.  See doc/Release-Notes-1.1.txt.  The default is
	13 KB.

store_avg_object_size 13 KB
DOC_END

NAME: store_objects_per_bucket
TYPE: int
DEFAULT: 50
LOC: Config.Store.objectsPerBucket
DOC_START
	Target number of objects per bucket in the store hash table.
	Lowering this value increases the total number of buckets and
	also the storage maintenance rate.  The default is 20.

store_objects_per_bucket 20
DOC_END


NAME: http_anonymizer
TYPE: httpanonymizer
LOC: Config.onoff.anonymizer
DEFAULT: off
DOC_START
	If you want to filter out certain HTTP request headers for
	privacy reasons, enable this option.  There are three
	appropriate settings:
		'off'		All HTTP request headers are passed.
		'standard'	Specific headers are removed
		'paranoid'	Only specific headers are allowed.
	To see which headers are allowed or denied, please see the
	http-anon.c source file.

http_anonymizer off
DOC_END


NAME: client_db
COMMENT: on|off
TYPE: onoff
DEFAULT: on
LOC: Config.onoff.client_db
DOC_START
	If you want to disable collecting per-client statistics, then
	turn off client_db here.

client_db on
DOC_END


NAME: netdb_low
TYPE: int
DEFAULT: 900
LOC: Config.Netdb.low
DOC_NONE

NAME: netdb_high
TYPE: int
DEFAULT: 1000
LOC: Config.Netdb.high
DOC_START
	The low and high water marks for the ICMP measurement
	database.  These are counts, not percents.  The defaults are
	900 and 1000.  When the high water mark is reached, database
	entries will be deleted until the low mark is reached.

netdb_low 900
netdb_high 1000
DOC_END


NAME: netdb_ping_period
TYPE: time_t
LOC: Config.Netdb.period
DEFAULT: 5 minutes
DOC_START
	The minimum period for measuring a site.  There will be at
	least this much delay between successive pings to the same
	network.  The default is five minutes.

netdb_ping_period 5 minutes
DOC_END


NAME: query_icmp
COMMENT: on|off
TYPE: onoff
DEFAULT: off
LOC: Config.onoff.query_icmp
DOC_START
	If you want to ask your peers to include ICMP data in their ICP
	replies, enable this option.

	If your peer has configured Squid (during compilation) with
	'--enable-icmp' then that peer will send ICMP pings to origin server
	sites of the URLs it receives.  If you enable this option then the
	ICP replies from that peer will include the ICMP data (if available).
	Then, when choosing a parent cache, Squid will choose the parent with
	the minimal RTT to the origin server.  When this happens, the
	hierarchy field of the access.log will be
	"CLOSEST_PARENT_MISS".  This option is off by default.

query_icmp off
DOC_END

NAME: test_reachability
COMMENT: on|off
TYPE: onoff
DEFAULT: off
LOC: Config.onoff.test_reachability
DOC_START
	When this is 'on', ICP MISS replies will be ICP_MISS_NOFETCH
	instead of ICP_MISS if the target host is NOT in the ICMP
	database, or has a zero RTT.

test_reachability off
DOC_END

NAME: buffered_logs
COMMENT: on|off
TYPE: onoff
DEFAULT: off
LOC: Config.onoff.buffered_logs
DOC_START
	Some log files (cache.log, useragent.log) are written with
	stdio functions, and as such they can be buffered or
	unbuffered.  By default they will be unbuffered. Buffering them
	can speed up the writing slightly (though you are unlikely to
	need to worry).
buffered_logs off
DOC_END

NAME: reload_into_ims
IFDEF: HTTP_VIOLATIONS
COMMENT: on|off
TYPE: onoff
DEFAULT: off
LOC: Config.onoff.reload_into_ims
DOC_START
	When you enable this option, client no-cache or ``reload''
	requests will be changed to If-Modified-Since requests.
	Doing this VIOLATES the HTTP standard.  Enabling this
	feature could make you liable for problems which it
	causes.
	
	see also refresh_pattern for a more selective approach.

reload_into_ims off
DOC_END

NAME: always_direct
TYPE: acl_access
LOC: Config.accessList.AlwaysDirect
DEFAULT: none
DOC_START
	Usage: always_direct allow|deny [!]aclname ...

	Here you can use ACL elements to specify requests which should
	ALWAYS be forwarded directly to origin servers.  This option
	replaces some v1.1 options such as inside_firewall,
	firewall_ip, local_domain, and local_ip.  For example, to
	always directly forward requests for local servers use
	something like:

		acl local-servers dstdomain my.domain.net
		always_direct allow local-servers

	To always forward FTP requests directly, use

		acl FTP proto FTP
		always_direct allow FTP

	NOTE: There is a similar, but opposite option named
	'never_direct'.  You need to be aware that "always_direct deny
	foo" is NOT the same thing as "never_direct allow foo".  You
	may need to use a deny rule to exclude a more-specific case of
	some other rule.  Example:

		acl local-external dstdomain external.foo.net
		acl local-servers dstdomain  foo.net
		always_direct deny local-external
		always_direct allow local-servers
DOC_END

NAME: never_direct
TYPE: acl_access
LOC: Config.accessList.NeverDirect
DEFAULT: none
DOC_START
	Usage: never_direct allow|deny [!]aclname ...

	never_direct is the opposite of always_direct.  Please read
	the description for always_direct if you have not already.

	With 'never_direct' you can use ACL elements to specify
	requests which should NEVER be forwarded directly to origin
	servers.  This option replaces some v1.1 options such as
	inside_firewall, firewall_ip, local_domain, and local_ip.  For
	example, to force the use of a proxy for all requests, except
	those in your local domain, use something like:

		acl local-servers dstdomain my.domain.net
		acl all src 0.0.0.0/0.0.0.0
		never_direct deny local-servers
		never_direct allow all
DOC_END

NAME: fake_user_agent
TYPE: eol
LOC: Config.fake_ua
DEFAULT: none
DOC_START
	If you use the paranoid http_anonymizer setting, Squid will strip
	your User-agent string from the request.  Some Web servers will
	refuse your request without a User-agent string.  Use this to
	fake one up.  For example:

	fake_user_agent Nutscrape/1.0 (CP/M; 8-bit)
	(credit to Paul Southworth pauls@etext.org for this one!)

fake_user_agent none
DOC_END

NAME: icon_directory
TYPE: string
LOC: Config.icons.directory
DEFAULT: @DEFAULT_ICON_DIR@
DOC_START
	Where the icons are stored. These are normally kept in
	@DEFAULT_ICON_DIR@
DOC_END

NAME: error_directory
TYPE: string
LOC: Config.errorDirectory
DEFAULT: @DEFAULT_ERROR_DIR@
DOC_START
	If you wish to create your own versions of the default
	(English) error files, either to customise them to suit your
	language or company copy the template english files to anther
	directory and point this tag at them.
DOC_END

NAME: minimum_retry_timeout
COMMENT: (seconds)
TYPE: time_t
LOC: Config.retry.timeout
DEFAULT: 5 seconds
DOC_START
	This specifies the minimum connect timeout, for when the
	connect timeout is reduced to compensate for the availability
	of multiple IP addresses.

	When a connection to a host is initiated, and that host has
	several IP addresses, the default connection timeout is reduced
	by dividing it by the number of addresses.  So, a site with 15
	addresses would then have a timeout of 8 seconds for each
	address attempted.  To avoid having the timeout reduced to the
	point where even a working host would not have a chance to
	respond, this setting is provided.  The default, and the
	minimum value, is five seconds, and the maximum value is sixty
	seconds, or half of connect_timeout, whichever is greater and
	less than connect_timeout.

minimum_retry_timeout 5 seconds
DOC_END

NAME: maximum_single_addr_tries
TYPE: int
LOC: Config.retry.maxtries
DEFAULT: 3
DOC_START
	This sets the maximum number of connection attempts for a
	host that only has one address (for multiple-address hosts,
	each address is tried once).

	The default value is three tries, the (not recommended)
	maximum is 255 tries.  A warning message will be generated
	if it is set to a value greater than ten.

maximum_single_addr_tries 3
DOC_END

NAME: snmp_port
TYPE: ushort
LOC: Config.Port.snmp
DEFAULT: 3401
IFDEF: SQUID_SNMP
DOC_START
	Squid can now serve statistics and status information via SNMP.
	By default it listens to port 3401 on the machine. If you don't
	wish to use SNMP, set this to '-1'.

	NOTE: SNMP support requires use the --enable-snmp configure
	command line option.
snmp_port 3401
DOC_END

NAME: snmp_do_queueing
TYPE: onoff
LOC: Config.Snmp.do_queueing
DEFAULT: on
IFDEF: SQUID_SNMP
DOC_START
	If disabled, snmp packets will not be queued but delivered
	immediately. This could be useful when you want to monitor a
	cache in trouble, but this could also make Squid block, slowing
	connections and possibly worsening the cache status.
snmp_do_queueing on
DOC_END

NAME: forward_snmpd_port
TYPE: ushort
LOC: Config.Snmp.localPort
DEFAULT: 0
IFDEF: SQUID_SNMP
DOC_START
	This configures whether we should be forwarding SNMP requests
	to another snmpd. The reason for putting this piece of
	functionality into Squid was to enable access to the system's
	installed snmpd with minimal changes.  This option is turned
	off by default, check with your /etc/services for your system's
	snmp port (usually 161).  We do not use getservbyname() to
	allow you to set Squid into port 161 and your system's snmpd to
	another port by changing /etc/services.

	WARNING: Because of Squid acting as a proxy snmpd for system
	you have to do security checks on THIS snmpd for all objects.
	Check your snmp_config_file.
forward_snmpd_port 0
DOC_END

NAME: snmp_mib_path
TYPE: string
LOC: Config.Snmp.mibPath
DEFAULT: @DEFAULT_MIB_PATH@
IFDEF: SQUID_SNMP
DOC_START
	The location of Squid's mib.
snmp_mib_path @DEFAULT_MIB_PATH@
DOC_END

NAME: trap_sink
TYPE: string
LOC: Config.Snmp.trap_sink
DEFAULT: 127.0.0.1
IFDEF: SQUID_SNMP
DOC_START
	Hostname or ip address of trap sink for snmp
trap_sink 127.0.0.1
DOC_END

NAME: snmp_trap_community
TYPE: string
LOC: Config.Snmp.trap_community
DEFAULT: public
IFDEF: SQUID_SNMP
DOC_START
	Community name for traps.
snmp_trap_community public
DOC_END

NAME: snmp_enable_authen_traps
TYPE: onoff
LOC: Config.Snmp.conf_authtraps
DEFAULT: off
IFDEF: SQUID_SNMP
DOC_START
	Enable SNMP authenticated traps. Set to 'off' or 'on'.
snmp_enable_authen_traps off
DOC_END

NAME: snmp_agent_conf
TYPE: stringlist
LOC: Config.Snmp.snmpconf
DEFAULT: none
IFDEF: SQUID_SNMP
DOC_START
	Define snmp views, users and communities 
	Example:
		snmp_agent_conf view all .1.3.6	included
		snmp_agent_conf view squid .1.3.6 included
		snmp_agent_conf user squid - all all public
		snmp_agent_conf user all all all all  squid
		snmp_agent_conf community public squid squid
		snmp_agent_conf community readwrite all all
DOC_END

NAME: snmp_acl
TYPE: snmp_access
LOC: Config.Snmp.communities
DEFAULT: none
IFDEF: SQUID_SNMP
DOC_START
	Define access controls per community:
	snmp_access communityname allow|deny [!]aclname ...
	Example:
		snmp_acl public allow adminsubnet
		snmp_acl public deny all
DOC_END

NAME: snmp_incoming_address
TYPE: address
LOC: Config.Addrs.snmp_outgoing
DEFAULT: 0.0.0.0
IFDEF: SQUID_SNMP
DOC_NONE
NAME: snmp_outgoing_address
TYPE: address
LOC: Config.Addrs.snmp_outgoing
DEFAULT: 255.255.255.255
IFDEF: SQUID_SNMP
DOC_START
	Just like 'udp_incoming_address' above, but for the SNMP port.

	snmp_incoming_address	is used for the SNMP socket receiving
				messages from SNMP agents.
	snmp_outgoing_address	is used for SNMP packets returned to SNMP
				agents.

	The default behaviour is to not bind to any specific address.

	NOTE, snmp_incoming_address and snmp_outgoing_address can not have
	the same value since they both use port 3130.

snmp_incoming_address 0.0.0.0
snmp_outgoing_address 0.0.0.0
DOC_END

NAME: as_whois_server
TYPE: string
LOC: Config.as_whois_server
DEFAULT: whois.ra.net
DEFAULT_IF_NONE: whois.ra.net
DOC_START
	WHOIS server to query for AS numbers.  NOTE: AS numbers are
	queried only when Squid starts up, not for every request.
DOC_END

COMMENT_START
 DELAY POOL PARAMETERS (all require DELAY_POOLS compilation option)
 -----------------------------------------------------------------------------

 A general note on delay pools - the first matched delay pool is used,
 that is, if a request falls into class1 then it isn't checked for class2
 or class3 (and similarly a class2 request isn't checked for class3).
COMMENT_END

NAME: delay_class1_access
TYPE: acl_access
DEFAULT: none
IFDEF: DELAY_POOLS
LOC: Config.Delay.class1.access
DOC_START
	This is used to select what client requests are processed via
	the first ("class 1") delay pool.  In this delay pool only the
	aggregate traffic allowance is configurable.
DOC_END

NAME: delay_class2_access
TYPE: acl_access
DEFAULT: none
IFDEF: DELAY_POOLS
LOC: Config.Delay.class2.access
DOC_START
	This is used to select what client requests are processed via
	the first ("class 2") delay pool.  In this delay pool both the
	aggregate and per-host traffic allowance are configurable.
	There are 254 individual delay pools based on the last 8 bits
	of the client IP address (addresses ending in 0 and 255 are not
	permitted).
DOC_END

NAME: delay_class3_access
TYPE: acl_access
DEFAULT: none
IFDEF: DELAY_POOLS
LOC: Config.Delay.class3.access
DOC_START
	This is used to select what client requests are processed via
	the first ("class 3") delay pool.  In this delay pool, the
	aggregate, network and per-host traffic allowance are
	configurable.  There are 255 network delay pools based on the
	17th to 24th bit of the client IP address (network 255 is not
	permitted), and individual delay pools based on the last 16
	bits of the client IP address (network 255 and hosts ending in
	0 and 255 are not permitted).
DOC_END

NAME: delay_class1_aggregate_restore
TYPE: int
DEFAULT: -1
IFDEF: DELAY_POOLS
COMMENT: (bps)
LOC: Config.Delay.class1.aggregate.restore_bps
DOC_START
	The number of bytes per second added to the class 1 aggregate
	delay pool traffic allowance (-1 to disable the delay pool).
DOC_END

NAME: delay_class1_aggregate_max
TYPE: int
DEFAULT: -1
IFDEF: DELAY_POOLS
COMMENT: (bytes)
LOC: Config.Delay.class1.aggregate.max_bytes
DOC_START
	The maximum number of bytes which can be in the class 1
	aggregate delay pool traffic allowance.
DOC_END

NAME: delay_class2_aggregate_restore
TYPE: int
DEFAULT: -1
IFDEF: DELAY_POOLS
COMMENT: (bps)
LOC: Config.Delay.class2.aggregate.restore_bps
DOC_START
	The number of bytes per second added to the class 2 aggregate
	delay pool traffic allowance (-1 to disable the delay pool).
DOC_END

NAME: delay_class2_aggregate_max
TYPE: int
DEFAULT: -1
IFDEF: DELAY_POOLS
COMMENT: (bytes)
LOC: Config.Delay.class2.aggregate.max_bytes
DOC_START
	The maximum number of bytes which can be in the class 2
	aggregate delay pool traffic allowance.
DOC_END

NAME: delay_class2_individual_restore
TYPE: int
DEFAULT: -1
IFDEF: DELAY_POOLS
COMMENT: (bps)
LOC: Config.Delay.class2.individual.restore_bps
DOC_START
	The number of bytes per second added to the class 2 individual
	host delay pool traffic allowances (-1 to disable these delay
	pools).
DOC_END

NAME: delay_class2_individual_max
TYPE: int
DEFAULT: -1
IFDEF: DELAY_POOLS
COMMENT: (bytes)
LOC: Config.Delay.class2.individual.max_bytes
DOC_START
	The maximum number of bytes which can be in the class 2
	individual host delay pool traffic allowances.
DOC_END

NAME: delay_class3_aggregate_restore
TYPE: int
DEFAULT: -1
IFDEF: DELAY_POOLS
COMMENT: (bps)
LOC: Config.Delay.class3.aggregate.restore_bps
DOC_START
	The number of bytes per second added to the class 3 aggregate
	delay pool traffic allowance (-1 to disable the delay pool).
DOC_END

NAME: delay_class3_aggregate_max
TYPE: int
DEFAULT: -1
IFDEF: DELAY_POOLS
COMMENT: (bytes)
LOC: Config.Delay.class3.aggregate.max_bytes
DOC_START
	The maximum number of bytes which can be in the class 3
	aggregate delay pool traffic allowance.
DOC_END

NAME: delay_class3_network_restore
TYPE: int
DEFAULT: -1
IFDEF: DELAY_POOLS
COMMENT: (bps)
LOC: Config.Delay.class3.network.restore_bps
DOC_START
	The number of bytes per second added to the class 3 8-bit
	network delay pool traffic allowances (-1 to disable these
	delay pools).
DOC_END

NAME: delay_class3_network_max
TYPE: int
DEFAULT: -1
IFDEF: DELAY_POOLS
COMMENT: (bytes)
LOC: Config.Delay.class3.network.max_bytes
DOC_START
	The maximum number of bytes which can be in the class 3 8-bit
	network delay pool traffic allowances.
DOC_END

NAME: delay_class3_individual_restore
TYPE: int
DEFAULT: -1
IFDEF: DELAY_POOLS
COMMENT: (bps)
LOC: Config.Delay.class3.individual.restore_bps
DOC_START
	The number of bytes per second added to the class 3 individual
	host delay pool traffic allowances (-1 to disable these delay
	pools).
DOC_END

NAME: delay_class3_individual_max
TYPE: int
DEFAULT: -1
IFDEF: DELAY_POOLS
COMMENT: (bytes)
LOC: Config.Delay.class3.individual.max_bytes
DOC_START
	The maximum number of bytes which can be in the class 3
	individual host delay pool traffic allowances.
DOC_END
EOF