stretch upgrade: squid3 --> squid

Signed-off-by: Holger Levsen <holger@layer-acht.org>

1 files changed, 0 insertions, 7968 deletions

diff --git a/hosts/profitbricks-build7-amd64/etc/squid3/squid.conf b/hosts/profitbricks-build7-amd64/etc/squid3/squid.conf
deleted file mode 100644
index 9f4b4272..00000000
--- a/hosts/profitbricks-build7-amd64/etc/squid3/squid.conf
+++ /dev/null
@@ -1,7968 +0,0 @@
-#	WELCOME TO SQUID 3.5.22
-#	----------------------------
-#	
-#	This is the documentation for the Squid configuration file.
-#	This documentation can also be found online at:
-#		http://www.squid-cache.org/Doc/config/
-#	
-#	You may wish to look at the Squid home page and wiki for the
-#	FAQ and other documentation:
-#		http://www.squid-cache.org/
-#		http://wiki.squid-cache.org/SquidFaq
-#		http://wiki.squid-cache.org/ConfigExamples
-#	
-#	This documentation shows what the defaults for various directives
-#	happen to be.  If you don't need to change the default, you should
-#	leave the line out of your squid.conf in most cases.
-#	
-#	In some cases "none" refers to no default setting at all,
-#	while in other cases it refers to the value of the option
-#	- the comments for that keyword indicate if this is the case.
-#
-
-#  Configuration options can be included using the "include" directive.
-#  Include takes a list of files to include. Quoting and wildcards are
-#  supported.
-#
-#  For example,
-#
-#  include /path/to/included/file/squid.acl.config
-#
-#  Includes can be nested up to a hard-coded depth of 16 levels.
-#  This arbitrary restriction is to prevent recursive include references
-#  from causing Squid entering an infinite loop whilst trying to load
-#  configuration files.
-#
-#  Values with byte units
-#
-#	Squid accepts size units on some size related directives. All
-#	such directives are documented with a default value displaying
-#	a unit.
-#
-#	Units accepted by Squid are:
-#		bytes - byte
-#		KB - Kilobyte (1024 bytes)
-#		MB - Megabyte
-#		GB - Gigabyte
-#
-#  Values with spaces, quotes, and other special characters
-#
-#	Squid supports directive parameters with spaces, quotes, and other
-#	special characters. Surround such parameters with "double quotes". Use
-#	the configuration_includes_quoted_values directive to enable or
-#	disable that support.
-#
-#	Squid supports reading configuration option parameters from external
-#	files using the syntax:
-#		parameters("/path/filename")
-#	For example:
-#		acl whitelist dstdomain parameters("/etc/squid/whitelist.txt")
-#
-#  Conditional configuration
-#
-#	If-statements can be used to make configuration directives
-#	depend on conditions:
-#
-#	    if <CONDITION>
-#	        ... regular configuration directives ...
-#	    [else
-#	        ... regular configuration directives ...]
-#	    endif
-#
-#	The else part is optional. The keywords "if", "else", and "endif"
-#	must be typed on their own lines, as if they were regular
-#	configuration directives.
-#
-#	NOTE: An else-if condition is not supported.
-#
-#	These individual conditions types are supported:
-#
-#	    true
-#		Always evaluates to true.
-#	    false
-#		Always evaluates to false.
-#	    <integer> = <integer>
-#	        Equality comparison of two integer numbers.
-#
-#
-#  SMP-Related Macros
-#
-#	The following SMP-related preprocessor macros can be used.
-#
-#	${process_name} expands to the current Squid process "name"
-#	(e.g., squid1, squid2, or cache1).
-#
-#	${process_number} expands to the current Squid process
-#	identifier, which is an integer number (e.g., 1, 2, 3) unique
-#	across all Squid processes of the current service instance.
-#
-#	${service_name} expands into the current Squid service instance
-#	name identifier which is provided by -n on the command line.
-#
-
-#  TAG: broken_vary_encoding
-#	This option is not yet supported by Squid-3.
-#Default:
-# none
-
-#  TAG: cache_vary
-#	This option is not yet supported by Squid-3.
-#Default:
-# none
-
-#  TAG: error_map
-#	This option is not yet supported by Squid-3.
-#Default:
-# none
-
-#  TAG: external_refresh_check
-#	This option is not yet supported by Squid-3.
-#Default:
-# none
-
-#  TAG: location_rewrite_program
-#	This option is not yet supported by Squid-3.
-#Default:
-# none
-
-#  TAG: refresh_stale_hit
-#	This option is not yet supported by Squid-3.
-#Default:
-# none
-
-#  TAG: hierarchy_stoplist
-#	Remove this line. Use always_direct or cache_peer_access ACLs instead if you need to prevent cache_peer use.
-#Default:
-# none
-
-#  TAG: log_access
-#	Remove this line. Use acls with access_log directives to control access logging
-#Default:
-# none
-
-#  TAG: log_icap
-#	Remove this line. Use acls with icap_log directives to control icap logging
-#Default:
-# none
-
-#  TAG: ignore_ims_on_miss
-#	Remove this line. The HTTP/1.1 feature is now configured by 'cache_miss_revalidate'.
-#Default:
-# none
-
-#  TAG: chunked_request_body_max_size
-#	Remove this line. Squid is now HTTP/1.1 compliant.
-#Default:
-# none
-
-#  TAG: dns_v4_fallback
-#	Remove this line. Squid performs a 'Happy Eyeballs' algorithm, the 'fallback' algorithm is no longer relevant.
-#Default:
-# none
-
-#  TAG: emulate_httpd_log
-#	Replace this with an access_log directive using the format 'common' or 'combined'.
-#Default:
-# none
-
-#  TAG: forward_log
-#	Use a regular access.log with ACL limiting it to MISS events.
-#Default:
-# none
-
-#  TAG: ftp_list_width
-#	Remove this line. Configure FTP page display using the CSS controls in errorpages.css instead.
-#Default:
-# none
-
-#  TAG: ignore_expect_100
-#	Remove this line. The HTTP/1.1 feature is now fully supported by default.
-#Default:
-# none
-
-#  TAG: log_fqdn
-#	Remove this option from your config. To log FQDN use %>A in the log format.
-#Default:
-# none
-
-#  TAG: log_ip_on_direct
-#	Remove this option from your config. To log server or peer names use %<A in the log format.
-#Default:
-# none
-
-#  TAG: maximum_single_addr_tries
-#	Replaced by connect_retries. The behaviour has changed, please read the documentation before altering.
-#Default:
-# none
-
-#  TAG: referer_log
-#	Replace this with an access_log directive using the format 'referrer'.
-#Default:
-# none
-
-#  TAG: update_headers
-#	Remove this line. The feature is supported by default in storage types where update is implemented.
-#Default:
-# none
-
-#  TAG: url_rewrite_concurrency
-#	Remove this line. Set the 'concurrency=' option of url_rewrite_children instead.
-#Default:
-# none
-
-#  TAG: useragent_log
-#	Replace this with an access_log directive using the format 'useragent'.
-#Default:
-# none
-
-#  TAG: dns_testnames
-#	Remove this line. DNS is no longer tested on startup.
-#Default:
-# none
-
-#  TAG: extension_methods
-#	Remove this line. All valid methods for HTTP are accepted by default.
-#Default:
-# none
-
-#  TAG: zero_buffers
-#Default:
-# none
-
-#  TAG: incoming_rate
-#Default:
-# none
-
-#  TAG: server_http11
-#	Remove this line. HTTP/1.1 is supported by default.
-#Default:
-# none
-
-#  TAG: upgrade_http0.9
-#	Remove this line. ICY/1.0 streaming protocol is supported by default.
-#Default:
-# none
-
-#  TAG: zph_local
-#	Alter these entries. Use the qos_flows directive instead.
-#Default:
-# none
-
-#  TAG: header_access
-#	Since squid-3.0 replace with request_header_access or reply_header_access
-#	depending on whether you wish to match client requests or server replies.
-#Default:
-# none
-
-#  TAG: httpd_accel_no_pmtu_disc
-#	Since squid-3.0 use the 'disable-pmtu-discovery' flag on http_port instead.
-#Default:
-# none
-
-#  TAG: wais_relay_host
-#	Replace this line with 'cache_peer' configuration.
-#Default:
-# none
-
-#  TAG: wais_relay_port
-#	Replace this line with 'cache_peer' configuration.
-#Default:
-# none
-
-# OPTIONS FOR SMP
-# -----------------------------------------------------------------------------
-
-#  TAG: workers
-#	Number of main Squid processes or "workers" to fork and maintain.
-#	0: "no daemon" mode, like running "squid -N ..."
-#	1: "no SMP" mode, start one main Squid process daemon (default)
-#	N: start N main Squid process daemons (i.e., SMP mode)
-#
-#	In SMP mode, each worker does nearly all what a single Squid daemon
-#	does (e.g., listen on http_port and forward HTTP requests).
-#Default:
-# SMP support disabled.
-
-#  TAG: cpu_affinity_map
-#	Usage: cpu_affinity_map process_numbers=P1,P2,... cores=C1,C2,...
-#
-#	Sets 1:1 mapping between Squid processes and CPU cores. For example,
-#
-#	    cpu_affinity_map process_numbers=1,2,3,4 cores=1,3,5,7
-#
-#	affects processes 1 through 4 only and places them on the first
-#	four even cores, starting with core #1.
-#
-#	CPU cores are numbered starting from 1. Requires support for
-#	sched_getaffinity(2) and sched_setaffinity(2) system calls.
-#
-#	Multiple cpu_affinity_map options are merged.
-#
-#	See also: workers
-#Default:
-# Let operating system decide.
-
-# OPTIONS FOR AUTHENTICATION
-# -----------------------------------------------------------------------------
-
-#  TAG: auth_param
-#	This is used to define parameters for the various authentication
-#	schemes supported by Squid.
-#
-#		format: auth_param scheme parameter [setting]
-#
-#	The order in which authentication schemes are presented to the client is
-#	dependent on the order the scheme first appears in config file. IE
-#	has a bug (it's not RFC 2617 compliant) in that it will use the basic
-#	scheme if basic is the first entry presented, even if more secure
-#	schemes are presented. For now use the order in the recommended
-#	settings section below. If other browsers have difficulties (don't
-#	recognize the schemes offered even if you are using basic) either
-#	put basic first, or disable the other schemes (by commenting out their
-#	program entry).
-#
-#	Once an authentication scheme is fully configured, it can only be
-#	shutdown by shutting squid down and restarting. Changes can be made on
-#	the fly and activated with a reconfigure. I.E. You can change to a
-#	different helper, but not unconfigure the helper completely.
-#
-#	Please note that while this directive defines how Squid processes
-#	authentication it does not automatically activate authentication.
-#	To use authentication you must in addition make use of ACLs based
-#	on login name in http_access (proxy_auth, proxy_auth_regex or
-#	external with %LOGIN used in the format tag). The browser will be
-#	challenged for authentication on the first such acl encountered
-#	in http_access processing and will also be re-challenged for new
-#	login credentials if the request is being denied by a proxy_auth
-#	type acl.
-#
-#	WARNING: authentication can't be used in a transparently intercepting
-#	proxy as the client then thinks it is talking to an origin server and
-#	not the proxy. This is a limitation of bending the TCP/IP protocol to
-#	transparently intercepting port 80, not a limitation in Squid.
-#	Ports flagged 'transparent', 'intercept', or 'tproxy' have
-#	authentication disabled.
-#
-#	=== Parameters common to all schemes. ===
-#
-#	"program" cmdline
-#		Specifies the command for the external authenticator.
-#
-#		By default, each authentication scheme is not used unless a
-#		program is specified.
-#
-#		See http://wiki.squid-cache.org/Features/AddonHelpers for
-#		more details on helper operations and creating your own.
-#
-#	"key_extras" format
-#		Specifies a string to be append to request line format for
-#		the authentication helper. "Quoted" format values may contain
-#		spaces and logformat %macros. In theory, any logformat %macro
-#		can be used. In practice, a %macro expands as a dash (-) if
-#		the helper request is sent before the required macro
-#		information is available to Squid.
-#
-#		By default, Squid uses request formats provided in
-#		scheme-specific examples below (search for %credentials).
-#
-#		The expanded key_extras value is added to the Squid credentials
-#		cache and, hence, will affect authentication. It can be used to
-#		autenticate different users with identical user names (e.g.,
-#		when user authentication depends on http_port).
-#
-#		Avoid adding frequently changing information to key_extras. For
-#		example, if you add user source IP, and it changes frequently
-#		in your environment, then max_user_ip ACL is going to treat
-#		every user+IP combination as a unique "user", breaking the ACL
-#		and wasting a lot of memory on those user records. It will also
-#		force users to authenticate from scratch whenever their IP
-#		changes.
-#
-#	"realm" string
-#		Specifies the protection scope (aka realm name) which is to be
-#		reported to the client for the authentication scheme. It is
-#		commonly part of the text the user will see when prompted for
-#		their username and password.
-#
-#		For Basic the default is "Squid proxy-caching web server".
-#		For Digest there is no default, this parameter is mandatory.
-#		For NTLM and Negotiate this parameter is ignored.
-#
-#	"children" numberofchildren [startup=N] [idle=N] [concurrency=N]
-#
-#		The maximum number of authenticator processes to spawn. If
-#		you start too few Squid will have to wait for them to process
-#		a backlog of credential verifications, slowing it down. When
-#		password verifications are done via a (slow) network you are
-#		likely to need lots of authenticator processes.
-#
-#		The startup= and idle= options permit some skew in the exact
-#		amount run. A minimum of startup=N will begin during startup
-#		and reconfigure. Squid will start more in groups of up to
-#		idle=N in an attempt to meet traffic needs and to keep idle=N
-#		free above those traffic needs up to the maximum.
-#
-#		The concurrency= option sets the number of concurrent requests
-#		the helper can process.  The default of 0 is used for helpers
-#		who only supports one request at a time. Setting this to a
-#		number greater than 0 changes the protocol used to include a
-#		channel ID field first on the request/response line, allowing
-#		multiple requests to be sent to the same helper in parallel
-#		without waiting for the response.
-#
-#		Concurrency must not be set unless it's known the helper
-#		supports the input format with channel-ID fields.
-#
-#		NOTE: NTLM and Negotiate schemes do not support concurrency
-#			in the Squid code module even though some helpers can.
-#
-#
-#
-#	=== Example Configuration ===
-#
-#	This configuration displays the recommended authentication scheme
-#	order from most to least secure with recommended minimum configuration
-#	settings for each scheme:
-#
-##auth_param negotiate program <uncomment and complete this line to activate>
-##auth_param negotiate children 20 startup=0 idle=1
-##auth_param negotiate keep_alive on
-##
-##auth_param digest program <uncomment and complete this line to activate>
-##auth_param digest children 20 startup=0 idle=1
-##auth_param digest realm Squid proxy-caching web server
-##auth_param digest nonce_garbage_interval 5 minutes
-##auth_param digest nonce_max_duration 30 minutes
-##auth_param digest nonce_max_count 50
-##
-##auth_param ntlm program <uncomment and complete this line to activate>
-##auth_param ntlm children 20 startup=0 idle=1
-##auth_param ntlm keep_alive on
-##
-##auth_param basic program <uncomment and complete this line>
-##auth_param basic children 5 startup=5 idle=1
-##auth_param basic realm Squid proxy-caching web server
-##auth_param basic credentialsttl 2 hours
-#Default:
-# none
-
-#  TAG: authenticate_cache_garbage_interval
-#	The time period between garbage collection across the username cache.
-#	This is a trade-off between memory utilization (long intervals - say
-#	2 days) and CPU (short intervals - say 1 minute). Only change if you
-#	have good reason to.
-#Default:
-# authenticate_cache_garbage_interval 1 hour
-
-#  TAG: authenticate_ttl
-#	The time a user & their credentials stay in the logged in
-#	user cache since their last request. When the garbage
-#	interval passes, all user credentials that have passed their
-#	TTL are removed from memory.
-#Default:
-# authenticate_ttl 1 hour
-
-#  TAG: authenticate_ip_ttl
-#	If you use proxy authentication and the 'max_user_ip' ACL,
-#	this directive controls how long Squid remembers the IP
-#	addresses associated with each user.  Use a small value
-#	(e.g., 60 seconds) if your users might change addresses
-#	quickly, as is the case with dialup.   You might be safe
-#	using a larger value (e.g., 2 hours) in a corporate LAN
-#	environment with relatively static address assignments.
-#Default:
-# authenticate_ip_ttl 1 second
-
-# ACCESS CONTROLS
-# -----------------------------------------------------------------------------
-
-#  TAG: external_acl_type
-#	This option defines external acl classes using a helper program
-#	to look up the status
-#
-#	  external_acl_type name [options] FORMAT.. /path/to/helper [helper arguments..]
-#
-#	Options:
-#
-#	  ttl=n		TTL in seconds for cached results (defaults to 3600
-#	  		for 1 hour)
-#
-#	  negative_ttl=n
-#	  		TTL for cached negative lookups (default same
-#	  		as ttl)
-#
-#	  grace=n	Percentage remaining of TTL where a refresh of a
-#			cached entry should be initiated without needing to
-#			wait for a new reply. (default is for no grace period)
-#
-#	  cache=n	The maximum number of entries in the result cache. The
-#			default limit is 262144 entries.  Each cache entry usually
-#			consumes at least 256 bytes. Squid currently does not remove
-#			expired cache entries until the limit is reached, so a proxy
-#			will sooner or later reach the limit. The expanded FORMAT
-#			value is used as the cache key, so if the details in FORMAT
-#			are highly variable, a larger cache may be needed to produce
-#			reduction in helper load.
-#
-#	  children-max=n
-#			Maximum number of acl helper processes spawned to service
-#			external acl lookups of this type. (default 20)
-#
-#	  children-startup=n
-#			Minimum number of acl helper processes to spawn during
-#			startup and reconfigure to service external acl lookups
-#			of this type. (default 0)
-#
-#	  children-idle=n
-#			Number of acl helper processes to keep ahead of traffic
-#			loads. Squid will spawn this many at once whenever load
-#			rises above the capabilities of existing processes.
-#			Up to the value of children-max. (default 1)
-#
-#	  concurrency=n	concurrency level per process. Only used with helpers
-#			capable of processing more than one query at a time.
-#
-#	  protocol=2.5	Compatibility mode for Squid-2.5 external acl helpers.
-#
-#	  ipv4 / ipv6	IP protocol used to communicate with this helper.
-#			The default is to auto-detect IPv6 and use it when available.
-#
-#
-#	FORMAT specifications
-#
-#	  %LOGIN	Authenticated user login name
-#	  %un		A user name. Expands to the first available name
-#	  		from the following list of information sources:
-#			- authenticated user name, like %ul or %LOGIN
-#			- user name sent by an external ACL, like %EXT_USER
-#			- SSL client name, like %us in logformat
-#			- ident user name, like %ui in logformat
-#	  %EXT_USER	Username from previous external acl
-#	  %EXT_LOG	Log details from previous external acl
-#	  %EXT_TAG	Tag from previous external acl
-#	  %IDENT	Ident user name
-#	  %SRC		Client IP
-#	  %SRCPORT	Client source port
-#	  %URI		Requested URI
-#	  %DST		Requested host
-#	  %PROTO	Requested URL scheme
-#	  %PORT		Requested port
-#	  %PATH		Requested URL path
-#	  %METHOD	Request method
-#	  %MYADDR	Squid interface address
-#	  %MYPORT	Squid http_port number
-#	  %PATH		Requested URL-path (including query-string if any)
-#	  %USER_CERT	SSL User certificate in PEM format
-#	  %USER_CERTCHAIN SSL User certificate chain in PEM format
-#	  %USER_CERT_xx	SSL User certificate subject attribute xx
-#	  %USER_CA_CERT_xx SSL User certificate issuer attribute xx
-#	  %ssl::>sni	SSL client SNI sent to Squid
-#	  %ssl::<cert_subject SSL server certificate DN
-#	  %ssl::<cert_issuer SSL server certificate issuer DN
-#
-#	  %>{Header}	HTTP request header "Header"
-#	  %>{Hdr:member}
-#	  		HTTP request header "Hdr" list member "member"
-#	  %>{Hdr:;member}
-#	  		HTTP request header list member using ; as
-#	  		list separator. ; can be any non-alphanumeric
-#			character.
-#
-#	  %<{Header}	HTTP reply header "Header"
-#	  %<{Hdr:member}
-#	  		HTTP reply header "Hdr" list member "member"
-#	  %<{Hdr:;member}
-#	  		HTTP reply header list member using ; as
-#	  		list separator. ; can be any non-alphanumeric
-#			character.
-#
-#	  %ACL		The name of the ACL being tested.
-#	  %DATA		The ACL arguments. If not used then any arguments
-#			is automatically added at the end of the line
-#			sent to the helper.
-#			NOTE: this will encode the arguments as one token,
-#			whereas the default will pass each separately.
-#
-#	  %%		The percent sign. Useful for helpers which need
-#			an unchanging input format.
-#
-#
-#	General request syntax:
-#
-#	  [channel-ID] FORMAT-values [acl-values ...]
-#
-#
-#	FORMAT-values consists of transaction details expanded with
-#	whitespace separation per the config file FORMAT specification
-#	using the FORMAT macros listed above.
-#
-#	acl-values consists of any string specified in the referencing
-#	config 'acl ... external' line. see the "acl external" directive.
-#
-#	Request values sent to the helper are URL escaped to protect
-#	each value in requests against whitespaces.
-#
-#	If using protocol=2.5 then the request sent to the helper is not
-#	URL escaped to protect against whitespace.
-#
-#	NOTE: protocol=3.0 is deprecated as no longer necessary.
-#
-#	When using the concurrency= option the protocol is changed by
-#	introducing a query channel tag in front of the request/response.
-#	The query channel tag is a number between 0 and concurrency-1.
-#	This value must be echoed back unchanged to Squid as the first part
-#	of the response relating to its request.
-#
-#
-#	The helper receives lines expanded per the above format specification
-#	and for each input line returns 1 line starting with OK/ERR/BH result
-#	code and optionally followed by additional keywords with more details.
-#
-#
-#	General result syntax:
-#
-#	  [channel-ID] result keyword=value ...
-#
-#	Result consists of one of the codes:
-#
-#	  OK
-#		the ACL test produced a match.
-#
-#	  ERR
-#		the ACL test does not produce a match.
-#
-#	  BH
-#		An internal error occurred in the helper, preventing
-#		a result being identified.
-#
-#	The meaning of 'a match' is determined by your squid.conf
-#	access control configuration. See the Squid wiki for details.
-#
-#	Defined keywords:
-#
-#	  user=		The users name (login)
-#
-#	  password=	The users password (for login= cache_peer option)
-#
-#	  message=	Message describing the reason for this response.
-#			Available as %o in error pages.
-#			Useful on (ERR and BH results).
-#
-#	  tag=		Apply a tag to a request. Only sets a tag once,
-#			does not alter existing tags.
-#
-#	  log=		String to be logged in access.log. Available as
-#	  		%ea in logformat specifications.
-#
-#  	  clt_conn_tag= Associates a TAG with the client TCP connection.
-#			Please see url_rewrite_program related documentation
-#			for this kv-pair.
-#
-#	Any keywords may be sent on any response whether OK, ERR or BH.
-#
-#	All response keyword values need to be a single token with URL
-#	escaping, or enclosed in double quotes (") and escaped using \ on
-#	any double quotes or \ characters within the value. The wrapping
-#	double quotes are removed before the value is interpreted by Squid.
-#	\r and \n are also replace by CR and LF.
-#
-#	Some example key values:
-#
-#		user=John%20Smith
-#		user="John Smith"
-#		user="J. \"Bob\" Smith"
-#Default:
-# none
-
-#  TAG: acl
-#	Defining an Access List
-#
-#	Every access list definition must begin with an aclname and acltype, 
-#	followed by either type-specific arguments or a quoted filename that
-#	they are read from.
-#
-#	   acl aclname acltype argument ...
-#	   acl aclname acltype "file" ...
-#
-#	When using "file", the file should contain one item per line.
-#
-#	Some acl types supports options which changes their default behaviour.
-#	The available options are:
-#
-#	-i,+i	By default, regular expressions are CASE-SENSITIVE. To make them
-#		case-insensitive, use the -i option. To return case-sensitive
-#		use the +i option between patterns, or make a new ACL line
-#		without -i.	
-#
-#	-n	Disable lookups and address type conversions.  If lookup or
-#		conversion is required because the parameter type (IP or
-#		domain name) does not match the message address type (domain
-#		name or IP), then the ACL would immediately declare a mismatch
-#		without any warnings or lookups.
-#
-#	--	Used to stop processing all options, in the case the first acl
-#		value has '-' character as first character (for example the '-'
-#		is a valid domain name)
-#
-#	Some acl types require suspending the current request in order
-#	to access some external data source.
-#	Those which do are marked with the tag [slow], those which
-#	don't are marked as [fast].
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl
-#	for further information
-#
-#	***** ACL TYPES AVAILABLE *****
-#
-#	acl aclname src ip-address/mask ...	# clients IP address [fast]
-#	acl aclname src addr1-addr2/mask ...	# range of addresses [fast]
-#	acl aclname dst [-n] ip-address/mask ...	# URL host's IP address [slow]
-#	acl aclname localip ip-address/mask ... # IP address the client connected to [fast]
-#
-#	acl aclname arp      mac-address ... (xx:xx:xx:xx:xx:xx notation)
-#	  # [fast]
-#	  # The 'arp' ACL code is not portable to all operating systems.
-#	  # It works on Linux, Solaris, Windows, FreeBSD, and some other
-#	  # BSD variants.
-#	  #
-#	  # NOTE: Squid can only determine the MAC/EUI address for IPv4
-#	  # clients that are on the same subnet. If the client is on a
-#	  # different subnet, then Squid cannot find out its address.
-#	  #
-#	  # NOTE 2: IPv6 protocol does not contain ARP. MAC/EUI is either
-#	  # encoded directly in the IPv6 address or not available.
-#
-#	acl aclname srcdomain   .foo.com ...
-#	  # reverse lookup, from client IP [slow]
-#	acl aclname dstdomain [-n] .foo.com ...
-#	  # Destination server from URL [fast]
-#	acl aclname srcdom_regex [-i] \.foo\.com ...
-#	  # regex matching client name [slow]
-#	acl aclname dstdom_regex [-n] [-i] \.foo\.com ...
-#	  # regex matching server [fast]
-#	  #
-#	  # For dstdomain and dstdom_regex a reverse lookup is tried if a IP
-#	  # based URL is used and no match is found. The name "none" is used
-#	  # if the reverse lookup fails.
-#
-#	acl aclname src_as number ...
-#	acl aclname dst_as number ...
-#	  # [fast]
-#	  # 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_access mycache.mydomain.net allow asexample
-#	  # cache_peer_access mycache_mydomain.net deny all
-#
-#	acl aclname peername myPeer ...
-#	  # [fast]
-#	  # match against a named cache_peer entry
-#	  # set unique name= on cache_peer lines for reliable use.
-#
-#	acl aclname time [day-abbrevs] [h1:m1-h2:m2]
-#	  # [fast]
-#	  #  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 [-i] ^http:// ...
-#	  # regex matching on whole URL [fast]
-#	acl aclname urllogin [-i] [^a-zA-Z0-9] ...
-#	  # regex matching on URL login field
-#	acl aclname urlpath_regex [-i] \.gif$ ...
-#	  # regex matching on URL path [fast]
-#
-#	acl aclname port 80 70 21 0-1024...   # destination TCP port [fast]
-#	                                      # ranges are alloed
-#	acl aclname localport 3128 ...	      # TCP port the client connected to [fast]
-#	                                      # NP: for interception mode this is usually '80'
-#
-#	acl aclname myportname 3128 ...       # *_port name [fast]
-#
-#	acl aclname proto HTTP FTP ...        # request protocol [fast]
-# 
-#	acl aclname method GET POST ...       # HTTP request method [fast]
-#
-#	acl aclname http_status 200 301 500- 400-403 ... 
-#	  # status code in reply [fast]
-#
-#	acl aclname browser [-i] regexp ...
-#	  # pattern match on User-Agent header (see also req_header below) [fast]
-#
-#	acl aclname referer_regex [-i] regexp ...
-#	  # pattern match on Referer header [fast]
-#	  # Referer is highly unreliable, so use with care
-#
-#	acl aclname ident username ...
-#	acl aclname ident_regex [-i] pattern ...
-#	  # string match on ident output [slow]
-#	  # use REQUIRED to accept any non-null ident.
-#
-#	acl aclname proxy_auth [-i] username ...
-#	acl aclname proxy_auth_regex [-i] pattern ...
-#	  # perform http authentication challenge to the client and match against
-#	  # supplied credentials [slow]
-#	  #
-#	  # takes a list of allowed usernames.
-#	  # use REQUIRED to accept any valid username.
-#	  #
-#	  # Will use proxy authentication in forward-proxy scenarios, and plain
-#	  # http authenticaiton in reverse-proxy scenarios
-#	  #
-#	  # NOTE: when a Proxy-Authentication header is sent but it is not
-#	  # needed during ACL checking the username is NOT logged
-#	  # in access.log.
-#	  #
-#	  # NOTE: proxy_auth requires a EXTERNAL authentication program
-#	  # to check username/password combinations (see
-#	  # auth_param directive).
-#	  #
-#	  # NOTE: proxy_auth can't be used in a transparent/intercepting proxy
-#	  # as the browser needs to be configured for using a proxy in order
-#	  # to respond to proxy authentication.
-#
-#	acl aclname snmp_community string ...
-#	  # A community string to limit access to your SNMP Agent [fast]
-#	  # Example:
-#	  #
-#	  #	acl snmppublic snmp_community public
-#
-#	acl aclname maxconn number
-#	  # This will be matched when the client's IP address has
-#	  # more than <number> TCP connections established. [fast]
-#	  # NOTE: This only measures direct TCP links so X-Forwarded-For
-#	  # indirect clients are not counted.
-#
-#	acl aclname max_user_ip [-s] number
-#	  # This will be matched when the user attempts to log in from more
-#	  # than <number> different ip addresses. The authenticate_ip_ttl
-#	  # parameter controls the timeout on the ip entries. [fast]
-#	  # If -s is specified the limit is strict, denying browsing
-#	  # from any further IP addresses until the ttl has expired. Without
-#	  # -s Squid will just annoy the user by "randomly" denying requests.
-#	  # (the counter is reset each time the limit is reached and a
-#	  # request is denied)
-#	  # NOTE: in acceleration mode or where there is mesh of child proxies,
-#	  # clients may appear to come from multiple addresses if they are
-#	  # going through proxy farms, so a limit of 1 may cause user problems.
-#
-#	acl aclname random probability
-#	  # Pseudo-randomly match requests. Based on the probability given.
-#	  # Probability may be written as a decimal (0.333), fraction (1/3)
-#	  # or ratio of matches:non-matches (3:5).
-#
-#	acl aclname req_mime_type [-i] mime-type ...
-#	  # regex match against the mime type of the request generated
-#	  # by the client. Can be used to detect file upload or some
-#	  # types HTTP tunneling requests [fast]
-#	  # NOTE: This does NOT match the reply. You cannot use this
-#	  # to match the returned file type.
-#
-#	acl aclname req_header header-name [-i] any\.regex\.here
-#	  # regex match against any of the known request headers.  May be
-#	  # thought of as a superset of "browser", "referer" and "mime-type"
-#	  # ACL [fast]
-#
-#	acl aclname rep_mime_type [-i] mime-type ...
-#	  # regex match against the mime type of the reply received by
-#	  # squid. Can be used to detect file download or some
-#	  # types HTTP tunneling requests. [fast]
-#	  # NOTE: This has no effect in http_access rules. It only has
-#	  # effect in rules that affect the reply data stream such as
-#	  # http_reply_access.
-#
-#	acl aclname rep_header header-name [-i] any\.regex\.here
-#	  # regex match against any of the known reply headers. May be
-#	  # thought of as a superset of "browser", "referer" and "mime-type"
-#	  # ACLs [fast]
-#
-#	acl aclname external class_name [arguments...]
-#	  # external ACL lookup via a helper class defined by the
-#	  # external_acl_type directive [slow]
-#
-#	acl aclname user_cert attribute values...
-#	  # match against attributes in a user SSL certificate
-#	  # attribute is one of DN/C/O/CN/L/ST or a numerical OID [fast]
-#
-#	acl aclname ca_cert attribute values...
-#	  # match against attributes a users issuing CA SSL certificate
-#	  # attribute is one of DN/C/O/CN/L/ST or a numerical OID  [fast]
-#
-#	acl aclname ext_user username ...
-#	acl aclname ext_user_regex [-i] pattern ...
-#	  # string match on username returned by external acl helper [slow]
-#	  # use REQUIRED to accept any non-null user name.
-#
-#	acl aclname tag tagvalue ...
-#	  # string match on tag returned by external acl helper [fast]
-#	  # DEPRECATED. Only the first tag will match with this ACL.
-#	  # Use the 'note' ACL instead for handling multiple tag values.
-#
-#	acl aclname hier_code codename ...
-#	  # string match against squid hierarchy code(s); [fast]
-#	  #  e.g., DIRECT, PARENT_HIT, NONE, etc.
-#	  #
-#	  # NOTE: This has no effect in http_access rules. It only has
-#	  # effect in rules that affect the reply data stream such as
-#	  # http_reply_access.
-#
-#	acl aclname note name [value ...]
-#	  # match transaction annotation [fast]
-#	  # Without values, matches any annotation with a given name.
-#	  # With value(s), matches any annotation with a given name that
-#	  # also has one of the given values.
-#	  # Names and values are compared using a string equality test.
-#	  # Annotation sources include note and adaptation_meta directives
-#	  # as well as helper and eCAP responses.
-#
-#	acl aclname adaptation_service service ...
-#	  # Matches the name of any icap_service, ecap_service,
-#	  # adaptation_service_set, or adaptation_service_chain that Squid
-#	  # has used (or attempted to use) for the master transaction.
-#	  # This ACL must be defined after the corresponding adaptation
-#	  # service is named in squid.conf. This ACL is usable with
-#	  # adaptation_meta because it starts matching immediately after
-#	  # the service has been selected for adaptation.
-#
-#	acl aclname any-of acl1 acl2 ...
-#	  # match any one of the acls [fast or slow]
-#	  # The first matching ACL stops further ACL evaluation.
-#	  #
-#	  # ACLs from multiple any-of lines with the same name are ORed.
-#	  # For example, A = (a1 or a2) or (a3 or a4) can be written as
-#	  #   acl A any-of a1 a2
-#	  #   acl A any-of a3 a4
-#	  #
-#	  # This group ACL is fast if all evaluated ACLs in the group are fast
-#	  # and slow otherwise.
-#
-#	acl aclname all-of acl1 acl2 ... 
-#	  # match all of the acls [fast or slow]
-#	  # The first mismatching ACL stops further ACL evaluation.
-#	  #
-#	  # ACLs from multiple all-of lines with the same name are ORed.
-#	  # For example, B = (b1 and b2) or (b3 and b4) can be written as
-#	  #   acl B all-of b1 b2
-#	  #   acl B all-of b3 b4
-#	  #
-#	  # This group ACL is fast if all evaluated ACLs in the group are fast
-#	  # and slow otherwise.
-#
-#	Examples:
-#		acl macaddress arp 09:00:2b:23:45:67
-#		acl myexample dst_as 1241
-#		acl password proxy_auth REQUIRED
-#		acl fileupload req_mime_type -i ^multipart/form-data$
-#		acl javascript rep_mime_type -i ^application/x-javascript$
-#
-#Default:
-# ACLs all, manager, localhost, and to_localhost are predefined.
-#
-#
-# Recommended minimum configuration:
-#
-
-# Example rule allowing access from your local networks.
-# Adapt to list your (internal) IP networks from where browsing
-# should be allowed
-acl localnet src 10.0.0.0/8	# RFC1918 possible internal network
-#acl localnet src 172.16.0.0/12	# RFC1918 possible internal network
-#acl localnet src 192.168.0.0/16	# RFC1918 possible internal network
-#acl localnet src fc00::/7       # RFC 4193 local private network range
-#acl localnet src fe80::/10      # RFC 4291 link-local (directly plugged) machines
-
-acl SSL_ports port 443
-acl Safe_ports port 80		# http
-acl Safe_ports port 21		# ftp
-acl Safe_ports port 443		# https
-acl Safe_ports port 70		# gopher
-acl Safe_ports port 210		# wais
-acl Safe_ports port 1025-65535	# unregistered ports
-acl Safe_ports port 280		# http-mgmt
-acl Safe_ports port 488		# gss-http
-acl Safe_ports port 591		# filemaker
-acl Safe_ports port 777		# multiling http
-acl CONNECT method CONNECT
-
-#  TAG: proxy_protocol_access
-#	Determine which client proxies can be trusted to provide correct
-#	information regarding real client IP address using PROXY protocol.
-#
-#	Requests may pass through a chain of several other proxies
-#	before reaching us. The original source details may by sent in:
-#		* HTTP message Forwarded header, or
-#		* HTTP message X-Forwarded-For header, or
-#		* PROXY protocol connection header.
-#
-#	This directive is solely for validating new PROXY protocol
-#	connections received from a port flagged with require-proxy-header.
-#	It is checked only once after TCP connection setup.
-#
-#	A deny match results in TCP connection closure.
-#
-#	An allow match is required for Squid to permit the corresponding
-#	TCP connection, before Squid even looks for HTTP request headers.
-#	If there is an allow match, Squid starts using PROXY header information
-#	to determine the source address of the connection for all future ACL
-#	checks, logging, etc.
-#
-#	SECURITY CONSIDERATIONS:
-#
-#		Any host from which we accept client IP details can place
-#		incorrect information in the relevant header, and Squid
-#		will use the incorrect information as if it were the
-#		source address of the request.  This may enable remote
-#		hosts to bypass any access control restrictions that are
-#		based on the client's source addresses.
-#
-#	This clause only supports fast acl types.
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#Default:
-# all TCP connections to ports with require-proxy-header will be denied
-
-#  TAG: follow_x_forwarded_for
-#	Determine which client proxies can be trusted to provide correct
-#	information regarding real client IP address.
-#
-#	Requests may pass through a chain of several other proxies
-#	before reaching us. The original source details may by sent in:
-#		* HTTP message Forwarded header, or
-#		* HTTP message X-Forwarded-For header, or
-#		* PROXY protocol connection header.
-#
-#	PROXY protocol connections are controlled by the proxy_protocol_access
-#	directive which is checked before this.
-#
-#	If a request reaches us from a source that is allowed by this
-#	directive, then we trust the information it provides regarding
-#	the IP of the client it received from (if any).
-#
-#	For the purpose of ACLs used in this directive the src ACL type always
-#	matches the address we are testing and srcdomain matches its rDNS.
-#
-#	On each HTTP request Squid checks for X-Forwarded-For header fields.
-#	If found the header values are iterated in reverse order and an allow
-#	match is required for Squid to continue on to the next value.
-#	The verification ends when a value receives a deny match, cannot be
-#	tested, or there are no more values to test.
-#	NOTE: Squid does not yet follow the Forwarded HTTP header.
-#
-#	The end result of this process is an IP address that we will
-#	refer to as the indirect client address.  This address may
-#	be treated as the client address for access control, ICAP, delay
-#	pools and logging, depending on the acl_uses_indirect_client,
-#	icap_uses_indirect_client, delay_pool_uses_indirect_client, 
-#	log_uses_indirect_client and tproxy_uses_indirect_client options.
-#
-#	This clause only supports fast acl types.
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#
-#	SECURITY CONSIDERATIONS:
-#
-#		Any host from which we accept client IP details can place
-#		incorrect information in the relevant header, and Squid
-#		will use the incorrect information as if it were the
-#		source address of the request.  This may enable remote
-#		hosts to bypass any access control restrictions that are
-#		based on the client's source addresses.
-#
-#	For example:
-#
-#		acl localhost src 127.0.0.1
-#		acl my_other_proxy srcdomain .proxy.example.com
-#		follow_x_forwarded_for allow localhost
-#		follow_x_forwarded_for allow my_other_proxy
-#Default:
-# X-Forwarded-For header will be ignored.
-
-#  TAG: acl_uses_indirect_client	on|off
-#	Controls whether the indirect client address
-#	(see follow_x_forwarded_for) is used instead of the
-#	direct client address in acl matching.
-#
-#	NOTE: maxconn ACL considers direct TCP links and indirect
-#	      clients will always have zero. So no match.
-#Default:
-# acl_uses_indirect_client on
-
-#  TAG: delay_pool_uses_indirect_client	on|off
-#	Controls whether the indirect client address
-#	(see follow_x_forwarded_for) is used instead of the
-#	direct client address in delay pools.
-#Default:
-# delay_pool_uses_indirect_client on
-
-#  TAG: log_uses_indirect_client	on|off
-#	Controls whether the indirect client address
-#	(see follow_x_forwarded_for) is used instead of the
-#	direct client address in the access log.
-#Default:
-# log_uses_indirect_client on
-
-#  TAG: tproxy_uses_indirect_client	on|off
-#	Controls whether the indirect client address
-#	(see follow_x_forwarded_for) is used instead of the
-#	direct client address when spoofing the outgoing client.
-#
-#	This has no effect on requests arriving in non-tproxy
-#	mode ports.
-#
-#	SECURITY WARNING: Usage of this option is dangerous
-#	and should not be used trivially. Correct configuration
-#	of follow_x_forwarded_for with a limited set of trusted
-#	sources is required to prevent abuse of your proxy.
-#Default:
-# tproxy_uses_indirect_client off
-
-#  TAG: spoof_client_ip
-#	Control client IP address spoofing of TPROXY traffic based on
-#	defined access lists.
-#
-#	spoof_client_ip allow|deny [!]aclname ...
-#
-#	If there are no "spoof_client_ip" lines present, the default
-#	is to "allow" spoofing of any suitable request.
-#
-#	Note that the cache_peer "no-tproxy" option overrides this ACL.
-#
-#	This clause supports fast acl types.
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#Default:
-# Allow spoofing on all TPROXY traffic.
-
-#  TAG: http_access
-#	Allowing or Denying access based on defined access lists
-#
-#	To allow or deny a message received on an HTTP, HTTPS, or FTP port:
-#	http_access allow|deny [!]aclname ...
-#
-#	NOTE on default values:
-#
-#	If there are no "access" lines present, the default is to deny
-#	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, 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" entry at the end of your access
-#	lists to avoid potential confusion.
-#
-#	This clause supports both fast and slow acl types.
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#
-#Default:
-# Deny, unless rules exist in squid.conf.
-#
-
-#
-# Recommended minimum Access Permission configuration:
-#
-# Deny requests to certain unsafe ports
-http_access deny !Safe_ports
-
-# Deny CONNECT to other than secure SSL ports
-http_access deny CONNECT !SSL_ports
-
-# Only allow cachemgr access from localhost
-http_access allow localhost manager
-http_access deny manager
-
-# We strongly recommend the following be uncommented to protect innocent
-# web applications running on the proxy server who think the only
-# one who can access services on "localhost" is a local user
-#http_access deny to_localhost
-
-#
-# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
-#
-
-# Example rule allowing access from your local networks.
-# Adapt localnet in the ACL section to list your (internal) IP networks
-# from where browsing should be allowed
-http_access allow localnet
-http_access allow localhost
-
-# And finally deny all other access to this proxy
-http_access deny all
-
-#  TAG: adapted_http_access
-#	Allowing or Denying access based on defined access lists
-#
-#	Essentially identical to http_access, but runs after redirectors
-#	and ICAP/eCAP adaptation. Allowing access control based on their
-#	output.
-#
-#	If not set then only http_access is used.
-#Default:
-# Allow, unless rules exist in squid.conf.
-
-#  TAG: http_reply_access
-#	Allow replies to client requests. This is complementary to http_access.
-#
-#	http_reply_access allow|deny [!] aclname ...
-#
-#	NOTE: if there are no access lines present, the default is to allow
-#	all replies.
-#
-#	If none of the access lines cause a match the opposite of the
-#	last line will apply. Thus it is good practice to end the rules
-#	with an "allow all" or "deny all" entry.
-#
-#	This clause supports both fast and slow acl types.
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#Default:
-# Allow, unless rules exist in squid.conf.
-
-#  TAG: icp_access
-#	Allowing or Denying access to the ICP port based on defined
-#	access lists
-#
-#	icp_access  allow|deny [!]aclname ...
-#
-#	NOTE: The default if no icp_access lines are present is to
-#	deny all traffic. This default may cause problems with peers
-#	using ICP.
-#
-#	This clause only supports fast acl types.
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#
-## Allow ICP queries from local networks only
-##icp_access allow localnet
-##icp_access deny all
-#Default:
-# Deny, unless rules exist in squid.conf.
-
-#  TAG: htcp_access
-#	Allowing or Denying access to the HTCP port based on defined
-#	access lists
-#
-#	htcp_access  allow|deny [!]aclname ...
-#
-#	See also htcp_clr_access for details on access control for
-#	cache purge (CLR) HTCP messages.
-#
-#	NOTE: The default if no htcp_access lines are present is to
-#	deny all traffic. This default may cause problems with peers
-#	using the htcp option.
-#
-#	This clause only supports fast acl types.
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#
-## Allow HTCP queries from local networks only
-##htcp_access allow localnet
-##htcp_access deny all
-#Default:
-# Deny, unless rules exist in squid.conf.
-
-#  TAG: htcp_clr_access
-#	Allowing or Denying access to purge content using HTCP based
-#	on defined access lists.
-#	See htcp_access for details on general HTCP access control.
-#
-#	htcp_clr_access  allow|deny [!]aclname ...
-#
-#	This clause only supports fast acl types.
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#
-## Allow HTCP CLR requests from trusted peers
-#acl htcp_clr_peer src 192.0.2.2 2001:DB8::2
-#htcp_clr_access allow htcp_clr_peer
-#htcp_clr_access deny all
-#Default:
-# Deny, unless rules exist in squid.conf.
-
-#  TAG: miss_access
-#	Determines whether network access is permitted when satisfying a request.
-#
-#	For example;
-#	    to force your neighbors to use you as a sibling instead of
-#	    a parent.
-#
-#		acl localclients src 192.0.2.0/24 2001:DB8::a:0/64
-#		miss_access deny  !localclients
-#		miss_access allow all
-#
-#	This means only your local clients are allowed to fetch relayed/MISS
-#	replies from the network and all other clients can only fetch cached
-#	objects (HITs).
-#
-#	The default for this setting allows all clients who passed the
-#	http_access rules to relay via this proxy.
-#
-#	This clause only supports fast acl types.
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#Default:
-# Allow, unless rules exist in squid.conf.
-
-#  TAG: ident_lookup_access
-#	A list of ACL elements which, if matched, cause an ident
-#	(RFC 931) lookup to be performed for this request.  For
-#	example, you might choose to always perform ident lookups
-#	for your main multi-user Unix boxes, but not for your Macs
-#	and PCs.  By default, ident lookups are not performed for
-#	any requests.
-#
-#	To enable ident lookups for specific client addresses, you
-#	can follow this example:
-#
-#	acl ident_aware_hosts src 198.168.1.0/24
-#	ident_lookup_access allow ident_aware_hosts
-#	ident_lookup_access deny all
-#
-#	Only src type ACL checks are fully supported.  A srcdomain
-#	ACL might work at times, but it will not always provide
-#	the correct result.
-#
-#	This clause only supports fast acl types.
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#Default:
-# Unless rules exist in squid.conf, IDENT is not fetched.
-
-#  TAG: reply_body_max_size	size [acl acl...]
-#	This option specifies the maximum size of a reply body. It can be
-#	used to prevent users from downloading very large files, such as
-#	MP3's and movies. When the reply headers are received, the
-#	reply_body_max_size lines are processed, and the first line where
-#	all (if any) listed ACLs are true is used as the maximum body size
-#	for this reply.
-#
-#	This size is checked twice. First when we get the reply headers,
-#	we check the content-length value.  If the content length value exists
-#	and is larger than the allowed size, the request is denied and the
-#	user receives an error message that says "the request or reply
-#	is too large." If there is no content-length, and the reply
-#	size exceeds this limit, the client's connection is just closed
-#	and they will receive a partial reply.
-#
-#	WARNING: downstream caches probably can not detect a partial reply
-#	if there is no content-length header, so they will cache
-#	partial responses and give them out as hits.  You should NOT
-#	use this option if you have downstream caches.
-#
-#	WARNING: A maximum size smaller than the size of squid's error messages
-#	will cause an infinite loop and crash squid. Ensure that the smallest
-#	non-zero value you use is greater that the maximum header size plus
-#	the size of your largest error page.
-#
-#	If you set this parameter none (the default), there will be
-#	no limit imposed.
-#
-#	Configuration Format is:
-#		reply_body_max_size SIZE UNITS [acl ...]
-#	ie.
-#		reply_body_max_size 10 MB
-#
-#Default:
-# No limit is applied.
-
-# NETWORK OPTIONS
-# -----------------------------------------------------------------------------
-
-#  TAG: http_port
-#	Usage:	port [mode] [options]
-#		hostname:port [mode] [options]
-#		1.2.3.4:port [mode] [options]
-#
-#	The socket addresses where Squid will listen for HTTP client
-#	requests.  You may specify multiple socket addresses.
-#	There are three forms: port alone, hostname with port, and
-#	IP address with port.  If you specify a hostname or IP
-#	address, Squid binds the socket to that specific
-#	address. Most likely, you do not need to bind to a specific
-#	address, so you can use the port number alone.
-#
-#	If you are running Squid in accelerator mode, you
-#	probably want to listen on port 80 also, or instead.
-#
-#	The -a command line option may be used to specify additional
-#	port(s) where Squid listens for proxy request. Such ports will
-#	be plain proxy ports with no options.
-#
-#	You may specify multiple socket addresses on multiple lines.
-#
-#	Modes:
-#
-#	   intercept	Support for IP-Layer NAT interception delivering
-#			traffic to this Squid port.
-#			NP: disables authentication on the port.
-#
-#	   tproxy	Support Linux TPROXY (or BSD divert-to) with spoofing
-#			of outgoing connections using the client IP address.
-#			NP: disables authentication on the port.
-#
-#	   accel	Accelerator / reverse proxy mode
-#
-#	   ssl-bump	For each CONNECT request allowed by ssl_bump ACLs,
-#			establish secure connection with the client and with
-#			the server, decrypt HTTPS messages as they pass through
-#			Squid, and treat them as unencrypted HTTP messages,
-#			becoming the man-in-the-middle.
-#
-#			The ssl_bump option is required to fully enable
-#			bumping of CONNECT requests.
-#
-#	Omitting the mode flag causes default forward proxy mode to be used.
-#
-#
-#	Accelerator Mode Options:
-#
-#	   defaultsite=domainname
-#			What to use for the Host: header if it is not present
-#			in a request. Determines what site (not origin server)
-#			accelerators should consider the default.
-#
-#	   no-vhost	Disable using HTTP/1.1 Host header for virtual domain support.
-#
-#	   protocol=	Protocol to reconstruct accelerated and intercepted
-#			requests with. Defaults to HTTP/1.1 for http_port and
-#			HTTPS/1.1 for https_port.
-#			When an unsupported value is configured Squid will
-#			produce a FATAL error.
-#			Values: HTTP or HTTP/1.1, HTTPS or HTTPS/1.1
-#
-#	   vport	Virtual host port support. Using the http_port number
-#			instead of the port passed on Host: headers.
-#
-#	   vport=NN	Virtual host port support. Using the specified port
-#			number instead of the port passed on Host: headers.
-#
-#	   act-as-origin
-#			Act as if this Squid is the origin server.
-#			This currently means generate new Date: and Expires:
-#			headers on HIT instead of adding Age:.
-#
-#	   ignore-cc	Ignore request Cache-Control headers.
-#
-#			WARNING: This option violates HTTP specifications if
-#			used in non-accelerator setups.
-#
-#	   allow-direct	Allow direct forwarding in accelerator mode. Normally
-#			accelerated requests are denied direct forwarding as if
-#			never_direct was used.
-#
-#			WARNING: this option opens accelerator mode to security
-#			vulnerabilities usually only affecting in interception
-#			mode. Make sure to protect forwarding with suitable
-#			http_access rules when using this.
-#
-#
-#	SSL Bump Mode Options:
-#	    In addition to these options ssl-bump requires TLS/SSL options.
-#
-#	   generate-host-certificates[=<on|off>]
-#			Dynamically create SSL server certificates for the
-#			destination hosts of bumped CONNECT requests.When 
-#			enabled, the cert and key options are used to sign
-#			generated certificates. Otherwise generated
-#			certificate will be selfsigned.
-#			If there is a CA certificate lifetime of the generated 
-#			certificate equals lifetime of the CA certificate. If
-#			generated certificate is selfsigned lifetime is three 
-#			years.
-#			This option is enabled by default when ssl-bump is used.
-#			See the ssl-bump option above for more information.
-#			
-#	   dynamic_cert_mem_cache_size=SIZE
-#			Approximate total RAM size spent on cached generated
-#			certificates. If set to zero, caching is disabled. The
-#			default value is 4MB.
-#
-#	TLS / SSL Options:
-#
-#	   cert=	Path to SSL certificate (PEM format).
-#
-#	   key=		Path to SSL private key file (PEM format)
-#			if not specified, the certificate file is
-#			assumed to be a combined certificate and
-#			key file.
-#
-#	   version=	The version of SSL/TLS supported
-#			    1	automatic (default)
-#			    2	SSLv2 only
-#			    3	SSLv3 only
-#			    4	TLSv1.0 only
-#			    5	TLSv1.1 only
-#			    6	TLSv1.2 only
-#
-#	   cipher=	Colon separated list of supported ciphers.
-#			NOTE: some ciphers such as EDH ciphers depend on
-#			      additional settings. If those settings are
-#			      omitted the ciphers may be silently ignored
-#			      by the OpenSSL library.
-#
-#	   options=	Various SSL implementation options. The most important
-#			being:
-#			    NO_SSLv2    Disallow the use of SSLv2
-#			    NO_SSLv3    Disallow the use of SSLv3
-#			    NO_TLSv1    Disallow the use of TLSv1.0
-#			    NO_TLSv1_1  Disallow the use of TLSv1.1
-#			    NO_TLSv1_2  Disallow the use of TLSv1.2
-#			    SINGLE_DH_USE Always create a new key when using
-#				      temporary/ephemeral DH key exchanges
-#			    NO_TICKET Disables TLS tickets extension
-#
-#			    SINGLE_ECDH_USE
-#				      Enable ephemeral ECDH key exchange.
-#				      The adopted curve should be specified
-#				      using the tls-dh option.
-#
-#			    ALL       Enable various bug workarounds
-#				      suggested as "harmless" by OpenSSL
-#				      Be warned that this reduces SSL/TLS
-#				      strength to some attacks.
-#			See OpenSSL SSL_CTX_set_options documentation for a
-#			complete list of options.
-#
-#	   clientca=	File containing the list of CAs to use when
-#			requesting a client certificate.
-#
-#	   cafile=	File containing additional CA certificates to
-#			use when verifying client certificates. If unset
-#			clientca will be used.
-#
-#	   capath=	Directory containing additional CA certificates
-#			and CRL lists to use when verifying client certificates.
-#
-#	   crlfile=	File of additional CRL lists to use when verifying
-#			the client certificate, in addition to CRLs stored in
-#			the capath. Implies VERIFY_CRL flag below.
-#
-#	   tls-dh=[curve:]file
-#			File containing DH parameters for temporary/ephemeral DH key
-#			exchanges, optionally prefixed by a curve for ephemeral ECDH
-#			key exchanges.
-#			See OpenSSL documentation for details on how to create the
-#			DH parameter file. Supported curves for ECDH can be listed
-#			using the "openssl ecparam -list_curves" command.
-#			WARNING: EDH and EECDH ciphers will be silently disabled if
-#				 this option is not set.
-#
-#	   sslflags=	Various flags modifying the use of SSL:
-#			    DELAYED_AUTH
-#				Don't request client certificates
-#				immediately, but wait until acl processing
-#				requires a certificate (not yet implemented).
-#			    NO_DEFAULT_CA
-#				Don't use the default CA lists built in
-#				to OpenSSL.
-#			    NO_SESSION_REUSE
-#				Don't allow for session reuse. Each connection
-#				will result in a new SSL session.
-#			    VERIFY_CRL
-#				Verify CRL lists when accepting client
-#				certificates.
-#			    VERIFY_CRL_ALL
-#				Verify CRL lists for all certificates in the
-#				client certificate chain.
-#
-#	   sslcontext=	SSL session ID context identifier.
-#
-#	Other Options:
-#
-#	   connection-auth[=on|off]
-#	                use connection-auth=off to tell Squid to prevent 
-#	                forwarding Microsoft connection oriented authentication
-#			(NTLM, Negotiate and Kerberos)
-#
-#	   disable-pmtu-discovery=
-#			Control Path-MTU discovery usage:
-#			    off		lets OS decide on what to do (default).
-#			    transparent	disable PMTU discovery when transparent
-#					support is enabled.
-#			    always	disable always PMTU discovery.
-#
-#			In many setups of transparently intercepting proxies
-#			Path-MTU discovery can not work on traffic towards the
-#			clients. This is the case when the intercepting device
-#			does not fully track connections and fails to forward
-#			ICMP must fragment messages to the cache server. If you
-#			have such setup and experience that certain clients
-#			sporadically hang or never complete requests set
-#			disable-pmtu-discovery option to 'transparent'.
-#
-#	   name=	Specifies a internal name for the port. Defaults to
-#			the port specification (port or addr:port)
-#
-#	   tcpkeepalive[=idle,interval,timeout]
-#			Enable TCP keepalive probes of idle connections.
-#			In seconds; idle is the initial time before TCP starts
-#			probing the connection, interval how often to probe, and
-#			timeout the time before giving up.
-#
-#	   require-proxy-header
-#			Require PROXY protocol version 1 or 2 connections.
-#			The proxy_protocol_access is required to whitelist
-#			downstream proxies which can be trusted.
-#
-#	If you run Squid on a dual-homed machine with an internal
-#	and an external interface we recommend you to specify the
-#	internal address:port in http_port. This way Squid will only be
-#	visible on the internal address.
-#
-#
-
-# Squid normally listens to port 3128
-http_port 3128
-
-#  TAG: https_port
-# Note: This option is only available if Squid is rebuilt with the
-#       --with-openssl
-#
-#	Usage:  [ip:]port cert=certificate.pem [key=key.pem] [mode] [options...]
-#
-#	The socket address where Squid will listen for client requests made
-#	over TLS or SSL connections. Commonly referred to as HTTPS.
-#
-#	This is most useful for situations where you are running squid in
-#	accelerator mode and you want to do the SSL work at the accelerator level.
-#
-#	You may specify multiple socket addresses on multiple lines,
-#	each with their own SSL certificate and/or options.
-#
-#	Modes:
-#
-#	   accel	Accelerator / reverse proxy mode
-#
-#	   intercept	Support for IP-Layer interception of
-#			outgoing requests without browser settings.
-#			NP: disables authentication and IPv6 on the port.
-#
-#	   tproxy	Support Linux TPROXY for spoofing outgoing
-#			connections using the client IP address.
-#			NP: disables authentication and maybe IPv6 on the port.
-#
-#	   ssl-bump	For each intercepted connection allowed by ssl_bump
-#			ACLs, establish a secure connection with the client and with
-#			the server, decrypt HTTPS messages as they pass through
-#			Squid, and treat them as unencrypted HTTP messages,
-#			becoming the man-in-the-middle.
-#
-#			An "ssl_bump server-first" match is required to
-#			fully enable bumping of intercepted SSL	connections.
-#
-#			Requires tproxy or intercept.
-#
-#	Omitting the mode flag causes default forward proxy mode to be used.
-#
-#
-#	See http_port for a list of generic options
-#
-#
-#	SSL Options:
-#
-#	   cert=	Path to SSL certificate (PEM format).
-#
-#	   key=		Path to SSL private key file (PEM format)
-#			if not specified, the certificate file is
-#			assumed to be a combined certificate and
-#			key file.
-#
-#	   version=	The version of SSL/TLS supported
-#			    1	automatic (default)
-#			    2	SSLv2 only
-#			    3	SSLv3 only
-#			    4	TLSv1 only
-#
-#	   cipher=	Colon separated list of supported ciphers.
-#
-#	   options=	Various SSL engine options. The most important
-#			being:
-#			    NO_SSLv2  Disallow the use of SSLv2
-#			    NO_SSLv3  Disallow the use of SSLv3
-#			    NO_TLSv1  Disallow the use of TLSv1
-#
-#			    SINGLE_DH_USE Always create a new key when using
-#				      temporary/ephemeral DH key exchanges
-#
-#			    SINGLE_ECDH_USE
-#				      Enable ephemeral ECDH key exchange.
-#				      The adopted curve should be specified
-#				      using the tls-dh option.
-#
-#			See src/ssl_support.c or OpenSSL SSL_CTX_set_options
-#			documentation for a complete list of options.
-#
-#	   clientca=	File containing the list of CAs to use when
-#			requesting a client certificate.
-#
-#	   cafile=	File containing additional CA certificates to
-#			use when verifying client certificates. If unset
-#			clientca will be used.
-#
-#	   capath=	Directory containing additional CA certificates
-#			and CRL lists to use when verifying client certificates.
-#
-#	   crlfile=	File of additional CRL lists to use when verifying
-#			the client certificate, in addition to CRLs stored in
-#			the capath. Implies VERIFY_CRL flag below.
-#
-#	   tls-dh=[curve:]file
-#			File containing DH parameters for temporary/ephemeral DH key
-#			exchanges, optionally prefixed by a curve for ephemeral ECDH
-#			key exchanges.
-#
-#	   sslflags=	Various flags modifying the use of SSL:
-#			    DELAYED_AUTH
-#				Don't request client certificates
-#				immediately, but wait until acl processing
-#				requires a certificate (not yet implemented).
-#			    NO_DEFAULT_CA
-#				Don't use the default CA lists built in
-#				to OpenSSL.
-#			    NO_SESSION_REUSE
-#				Don't allow for session reuse. Each connection
-#				will result in a new SSL session.
-#			    VERIFY_CRL
-#				Verify CRL lists when accepting client
-#				certificates.
-#			    VERIFY_CRL_ALL
-#				Verify CRL lists for all certificates in the
-#				client certificate chain.
-#
-#	   sslcontext=	SSL session ID context identifier.
-#
-#	   generate-host-certificates[=<on|off>]
-#			Dynamically create SSL server certificates for the
-#			destination hosts of bumped SSL requests.When
-#			enabled, the cert and key options are used to sign
-#			generated certificates. Otherwise generated
-#			certificate will be selfsigned.
-#			If there is CA certificate life time of generated
-#			certificate equals lifetime of CA certificate. If
-#			generated certificate is selfsigned lifetime is three
-#			years.
-#			This option is enabled by default when SslBump is used.
-#			See the sslBump option above for more information.
-#
-#	   dynamic_cert_mem_cache_size=SIZE
-#			Approximate total RAM size spent on cached generated
-#			certificates. If set to zero, caching is disabled. The
-#			default value is 4MB.
-#
-#	See http_port for a list of available options.
-#Default:
-# none
-
-#  TAG: ftp_port
-#	Enables Native FTP proxy by specifying the socket address where Squid
-#	listens for FTP client requests. See http_port directive for various
-#	ways to specify the listening address and mode.
-#
-#	Usage: ftp_port address [mode] [options]
-#
-#	WARNING: This is a new, experimental, complex feature that has seen
-#	limited production exposure. Some Squid modules (e.g., caching) do not
-#	currently work with native FTP proxying, and many features have not
-#	even been tested for compatibility. Test well before deploying!
-#
-#	Native FTP proxying differs substantially from proxying HTTP requests
-#	with ftp:// URIs because Squid works as an FTP server and receives
-#	actual FTP commands (rather than HTTP requests with FTP URLs).
-#
-#	Native FTP commands accepted at ftp_port are internally converted or
-#	wrapped into HTTP-like messages. The same happens to Native FTP
-#	responses received from FTP origin servers. Those HTTP-like messages
-#	are shoveled through regular access control and adaptation layers
-#	between the FTP client and the FTP origin server. This allows Squid to
-#	examine, adapt, block, and log FTP exchanges. Squid reuses most HTTP
-#	mechanisms when shoveling wrapped FTP messages. For example,
-#	http_access and adaptation_access directives are used.
-#
-#	Modes:
-#
-#	   intercept	Same as http_port intercept. The FTP origin address is
-#			determined based on the intended destination of the
-#			intercepted connection.
-#
-#	   tproxy	Support Linux TPROXY for spoofing outgoing
-#			connections using the client IP address.
-#			NP: disables authentication and maybe IPv6 on the port.
-#
-#	By default (i.e., without an explicit mode option), Squid extracts the
-#	FTP origin address from the login@origin parameter of the FTP USER
-#	command. Many popular FTP clients support such native FTP proxying.
-#
-#	Options:
-#
-#	   name=token	Specifies an internal name for the port. Defaults to
-#			the port address. Usable with myportname ACL.
-#
-#	   ftp-track-dirs
-#			Enables tracking of FTP directories by injecting extra
-#			PWD commands and adjusting Request-URI (in wrapping
-#			HTTP requests) to reflect the current FTP server
-#			directory. Tracking is disabled by default.
-#
-#	   protocol=FTP	Protocol to reconstruct accelerated and intercepted
-#			requests with. Defaults to FTP. No other accepted
-#			values have been tested with. An unsupported value
-#			results in a FATAL error. Accepted values are FTP,
-#			HTTP (or HTTP/1.1), and HTTPS (or HTTPS/1.1).
-#
-#	Other http_port modes and options that are not specific to HTTP and
-#	HTTPS may also work.
-#Default:
-# none
-
-#  TAG: tcp_outgoing_tos
-#	Allows you to select a TOS/Diffserv value for packets outgoing
-#	on the server side, based on an ACL.
-#
-#	tcp_outgoing_tos ds-field [!]aclname ...
-#
-#	Example where normal_service_net uses the TOS value 0x00
-#	and good_service_net uses 0x20
-#
-#	acl normal_service_net src 10.0.0.0/24
-#	acl good_service_net src 10.0.1.0/24
-#	tcp_outgoing_tos 0x00 normal_service_net
-#	tcp_outgoing_tos 0x20 good_service_net
-#
-#	TOS/DSCP values really only have local significance - so you should
-#	know what you're specifying. For more information, see RFC2474,
-#	RFC2475, and RFC3260.
-#
-#	The TOS/DSCP byte must be exactly that - a octet value  0 - 255, or
-#	"default" to use whatever default your host has.
-#	Note that only multiples of 4 are usable as the two rightmost bits have
-#	been redefined for use by ECN (RFC 3168 section 23.1).
-#	The squid parser will enforce this by masking away the ECN bits.
-#
-#	Processing proceeds in the order specified, and stops at first fully
-#	matching line.
-#
-#	Only fast ACLs are supported.
-#Default:
-# none
-
-#  TAG: clientside_tos
-#	Allows you to select a TOS/DSCP value for packets being transmitted
-#	on the client-side, based on an ACL.
-#
-#	clientside_tos ds-field [!]aclname ...
-#
-#	Example where normal_service_net uses the TOS value 0x00
-#	and good_service_net uses 0x20
-#
-#	acl normal_service_net src 10.0.0.0/24
-#	acl good_service_net src 10.0.1.0/24
-#	clientside_tos 0x00 normal_service_net
-#	clientside_tos 0x20 good_service_net
-#
-#	Note: This feature is incompatible with qos_flows. Any TOS values set here
-#	will be overwritten by TOS values in qos_flows.
-#
-#	The TOS/DSCP byte must be exactly that - a octet value  0 - 255, or
-#	"default" to use whatever default your host has.
-#	Note that only multiples of 4 are usable as the two rightmost bits have
-#	been redefined for use by ECN (RFC 3168 section 23.1).
-#	The squid parser will enforce this by masking away the ECN bits.
-#
-#Default:
-# none
-
-#  TAG: tcp_outgoing_mark
-# Note: This option is only available if Squid is rebuilt with the
-#       Packet MARK (Linux)
-#
-#	Allows you to apply a Netfilter mark value to outgoing packets
-#	on the server side, based on an ACL.
-#
-#	tcp_outgoing_mark mark-value [!]aclname ...
-#
-#	Example where normal_service_net uses the mark value 0x00
-#	and good_service_net uses 0x20
-#
-#	acl normal_service_net src 10.0.0.0/24
-#	acl good_service_net src 10.0.1.0/24
-#	tcp_outgoing_mark 0x00 normal_service_net
-#	tcp_outgoing_mark 0x20 good_service_net
-#
-#	Only fast ACLs are supported.
-#Default:
-# none
-
-#  TAG: clientside_mark
-# Note: This option is only available if Squid is rebuilt with the
-#       Packet MARK (Linux)
-#
-#	Allows you to apply a Netfilter mark value to packets being transmitted
-#	on the client-side, based on an ACL.
-#
-#	clientside_mark mark-value [!]aclname ...
-#
-#	Example where normal_service_net uses the mark value 0x00
-#	and good_service_net uses 0x20
-#
-#	acl normal_service_net src 10.0.0.0/24
-#	acl good_service_net src 10.0.1.0/24
-#	clientside_mark 0x00 normal_service_net
-#	clientside_mark 0x20 good_service_net
-#
-#	Note: This feature is incompatible with qos_flows. Any mark values set here
-#	will be overwritten by mark values in qos_flows.
-#Default:
-# none
-
-#  TAG: qos_flows
-#	Allows you to select a TOS/DSCP value to mark outgoing
-#	connections to the client, based on where the reply was sourced.
-#	For platforms using netfilter, allows you to set a netfilter mark
-#	value instead of, or in addition to, a TOS value.
-#
-#	By default this functionality is disabled. To enable it with the default
-#	settings simply use "qos_flows mark" or "qos_flows tos". Default
-#	settings will result in the netfilter mark or TOS value being copied
-#	from the upstream connection to the client. Note that it is the connection
-#	CONNMARK value not the packet MARK value that is copied.
-#
-#	It is not currently possible to copy the mark or TOS value from the
-#	client to the upstream connection request.
-#
-#	TOS values really only have local significance - so you should
-#	know what you're specifying. For more information, see RFC2474,
-#	RFC2475, and RFC3260.
-#
-#	The TOS/DSCP byte must be exactly that - a octet value  0 - 255.
-#	Note that only multiples of 4 are usable as the two rightmost bits have
-#	been redefined for use by ECN (RFC 3168 section 23.1).
-#	The squid parser will enforce this by masking away the ECN bits.
-#
-#	Mark values can be any unsigned 32-bit integer value.
-#
-#	This setting is configured by setting the following values:
-#
-#	tos|mark                Whether to set TOS or netfilter mark values
-#
-#	local-hit=0xFF		Value to mark local cache hits.
-#
-#	sibling-hit=0xFF	Value to mark hits from sibling peers.
-#
-#	parent-hit=0xFF		Value to mark hits from parent peers.
-#
-#	miss=0xFF[/mask]	Value to mark cache misses. Takes precedence
-#				over the preserve-miss feature (see below), unless
-#				mask is specified, in which case only the bits
-#				specified in the mask are written.
-#
-#	The TOS variant of the following features are only possible on Linux
-#	and require your kernel to be patched with the TOS preserving ZPH
-#	patch, available from http://zph.bratcheda.org
-#	No patch is needed to preserve the netfilter mark, which will work
-#	with all variants of netfilter.
-#
-#	disable-preserve-miss
-#		This option disables the preservation of the TOS or netfilter
-#		mark. By default, the existing TOS or netfilter mark value of
-#		the response coming from the remote server will be retained
-#		and masked with miss-mark.
-#		NOTE: in the case of a netfilter mark, the mark must be set on
-#		the connection (using the CONNMARK target) not on the packet
-#		(MARK target).
-#
-#	miss-mask=0xFF
-#		Allows you to mask certain bits in the TOS or mark value
-#		received from the remote server, before copying the value to
-#		the TOS sent towards clients.
-#		Default for tos: 0xFF (TOS from server is not changed).
-#		Default for mark: 0xFFFFFFFF (mark from server is not changed).
-#
-#	All of these features require the --enable-zph-qos compilation flag
-#	(enabled by default). Netfilter marking also requires the
-#	libnetfilter_conntrack libraries (--with-netfilter-conntrack) and
-#	libcap 2.09+ (--with-libcap).
-#
-#Default:
-# none
-
-#  TAG: tcp_outgoing_address
-#	Allows you to map requests to different outgoing IP addresses
-#	based on the username or source address of the user making
-#	the request.
-#
-#	tcp_outgoing_address ipaddr [[!]aclname] ...
-#
-#	For example;
-#		Forwarding clients with dedicated IPs for certain subnets.
-#
-#	  acl normal_service_net src 10.0.0.0/24
-#	  acl good_service_net src 10.0.2.0/24
-#
-#	  tcp_outgoing_address 2001:db8::c001 good_service_net
-#	  tcp_outgoing_address 10.1.0.2 good_service_net
-#
-#	  tcp_outgoing_address 2001:db8::beef normal_service_net
-#	  tcp_outgoing_address 10.1.0.1 normal_service_net
-#
-#	  tcp_outgoing_address 2001:db8::1
-#	  tcp_outgoing_address 10.1.0.3
-#
-#	Processing proceeds in the order specified, and stops at first fully
-#	matching line.
-#
-#	Squid will add an implicit IP version test to each line.
-#	Requests going to IPv4 websites will use the outgoing 10.1.0.* addresses.
-#	Requests going to IPv6 websites will use the outgoing 2001:db8:* addresses.
-#
-#
-#	NOTE: The use of this directive using client dependent ACLs is
-#	incompatible with the use of server side persistent connections. To
-#	ensure correct results it is best to set server_persistent_connections
-#	to off when using this directive in such configurations.
-#
-#	NOTE: The use of this directive to set a local IP on outgoing TCP links
-#	is incompatible with using TPROXY to set client IP out outbound TCP links.
-#	When needing to contact peers use the no-tproxy cache_peer option and the
-#	client_dst_passthru directive re-enable normal forwarding such as this.
-#
-#Default:
-# Address selection is performed by the operating system.
-
-#  TAG: host_verify_strict
-#	Regardless of this option setting, when dealing with intercepted
-#	traffic, Squid always verifies that the destination IP address matches
-#	the Host header domain or IP (called 'authority form URL').
-#	
-#	This enforcement is performed to satisfy a MUST-level requirement in
-#	RFC 2616 section 14.23: "The Host field value MUST represent the naming
-#	authority of the origin server or gateway given by the original URL".
-#	
-#	When set to ON:
-#		Squid always responds with an HTTP 409 (Conflict) error
-#		page and logs a security warning if there is no match.
-#	
-#		Squid verifies that the destination IP address matches
-#		the Host header for forward-proxy and reverse-proxy traffic
-#		as well. For those traffic types, Squid also enables the
-#		following checks, comparing the corresponding Host header
-#		and Request-URI components:
-#	
-#		 * The host names (domain or IP) must be identical,
-#		   but valueless or missing Host header disables all checks.
-#		   For the two host names to match, both must be either IP
-#		   or FQDN.
-#	
-#		 * Port numbers must be identical, but if a port is missing
-#		   the scheme-default port is assumed.
-#	
-#	
-#	When set to OFF (the default):
-#		Squid allows suspicious requests to continue but logs a
-#		security warning and blocks caching of the response.
-#	
-#		 * Forward-proxy traffic is not checked at all.
-#	
-#		 * Reverse-proxy traffic is not checked at all.
-#	
-#		 * Intercepted traffic which passes verification is handled
-#		   according to client_dst_passthru.
-#	
-#		 * Intercepted requests which fail verification are sent
-#		   to the client original destination instead of DIRECT.
-#		   This overrides 'client_dst_passthru off'.
-#	
-#		For now suspicious intercepted CONNECT requests are always
-#		responded to with an HTTP 409 (Conflict) error page.
-#	
-#	
-#	SECURITY NOTE:
-#	
-#	As described in CVE-2009-0801 when the Host: header alone is used
-#	to determine the destination of a request it becomes trivial for
-#	malicious scripts on remote websites to bypass browser same-origin
-#	security policy and sandboxing protections.
-#	
-#	The cause of this is that such applets are allowed to perform their
-#	own HTTP stack, in which case the same-origin policy of the browser
-#	sandbox only verifies that the applet tries to contact the same IP
-#	as from where it was loaded at the IP level. The Host: header may
-#	be different from the connected IP and approved origin.
-#	
-#Default:
-# host_verify_strict off
-
-#  TAG: client_dst_passthru
-#	With NAT or TPROXY intercepted traffic Squid may pass the request
-#	directly to the original client destination IP or seek a faster
-#	source using the HTTP Host header.
-#	
-#	Using Host to locate alternative servers can provide faster
-#	connectivity with a range of failure recovery options.
-#	But can also lead to connectivity trouble when the client and
-#	server are attempting stateful interactions unaware of the proxy.
-#	
-#	This option (on by default) prevents alternative DNS entries being
-#	located to send intercepted traffic DIRECT to an origin server.
-#	The clients original destination IP and port will be used instead.
-#	
-#	Regardless of this option setting, when dealing with intercepted
-#	traffic Squid will verify the Host: header and any traffic which
-#	fails Host verification will be treated as if this option were ON.
-#	
-#	see host_verify_strict for details on the verification process.
-#Default:
-# client_dst_passthru on
-
-# SSL OPTIONS
-# -----------------------------------------------------------------------------
-
-#  TAG: ssl_unclean_shutdown
-# Note: This option is only available if Squid is rebuilt with the
-#       --with-openssl
-#
-#	Some browsers (especially MSIE) bugs out on SSL shutdown
-#	messages.
-#Default:
-# ssl_unclean_shutdown off
-
-#  TAG: ssl_engine
-# Note: This option is only available if Squid is rebuilt with the
-#       --with-openssl
-#
-#	The OpenSSL engine to use. You will need to set this if you
-#	would like to use hardware SSL acceleration for example.
-#Default:
-# none
-
-#  TAG: sslproxy_client_certificate
-# Note: This option is only available if Squid is rebuilt with the
-#       --with-openssl
-#
-#	Client SSL Certificate to use when proxying https:// URLs
-#Default:
-# none
-
-#  TAG: sslproxy_client_key
-# Note: This option is only available if Squid is rebuilt with the
-#       --with-openssl
-#
-#	Client SSL Key to use when proxying https:// URLs
-#Default:
-# none
-
-#  TAG: sslproxy_version
-# Note: This option is only available if Squid is rebuilt with the
-#       --with-openssl
-#
-#	SSL version level to use when proxying https:// URLs
-#
-#	The versions of SSL/TLS supported:
-#
-#	    1	automatic (default)
-#	    2	SSLv2 only
-#	    3	SSLv3 only
-#	    4	TLSv1.0 only
-#	    5	TLSv1.1 only
-#	    6	TLSv1.2 only
-#Default:
-# automatic SSL/TLS version negotiation
-
-#  TAG: sslproxy_options
-# Note: This option is only available if Squid is rebuilt with the
-#       --with-openssl
-#
-#	Colon (:) or comma (,) separated list of SSL implementation options
-#	to use when proxying https:// URLs
-#	
-#	The most important being:
-#
-#	    NO_SSLv2    Disallow the use of SSLv2
-#	    NO_SSLv3    Disallow the use of SSLv3
-#	    NO_TLSv1    Disallow the use of TLSv1.0
-#	    NO_TLSv1_1  Disallow the use of TLSv1.1
-#	    NO_TLSv1_2  Disallow the use of TLSv1.2
-#
-#	    SINGLE_DH_USE
-#		      Always create a new key when using temporary/ephemeral
-#		      DH key exchanges
-#
-#	    NO_TICKET
-#		      Disable use of RFC5077 session tickets. Some servers
-#		      may have problems understanding the TLS extension due
-#		      to ambiguous specification in RFC4507.
-#
-#	    ALL       Enable various bug workarounds suggested as "harmless"
-#		      by OpenSSL. Be warned that this may reduce SSL/TLS
-#		      strength to some attacks.
-#	
-#	See the OpenSSL SSL_CTX_set_options documentation for a
-#	complete list of possible options.
-#	
-#	WARNING: This directive takes a single token. If a space is used
-#		 the value(s) after that space are SILENTLY IGNORED.
-#Default:
-# none
-
-#  TAG: sslproxy_cipher
-# Note: This option is only available if Squid is rebuilt with the
-#       --with-openssl
-#
-#	SSL cipher list to use when proxying https:// URLs
-#
-#	Colon separated list of supported ciphers.
-#Default:
-# none
-
-#  TAG: sslproxy_cafile
-# Note: This option is only available if Squid is rebuilt with the
-#       --with-openssl
-#
-#	file containing CA certificates to use when verifying server
-#	certificates while proxying https:// URLs
-#Default:
-# none
-
-#  TAG: sslproxy_capath
-# Note: This option is only available if Squid is rebuilt with the
-#       --with-openssl
-#
-#	directory containing CA certificates to use when verifying
-#	server certificates while proxying https:// URLs
-#Default:
-# none
-
-#  TAG: sslproxy_session_ttl
-# Note: This option is only available if Squid is rebuilt with the
-#       --with-openssl
-#
-#	Sets the timeout value for SSL sessions
-#Default:
-# sslproxy_session_ttl 300
-
-#  TAG: sslproxy_session_cache_size
-# Note: This option is only available if Squid is rebuilt with the
-#       --with-openssl
-#
-#        Sets the cache size to use for ssl session
-#Default:
-# sslproxy_session_cache_size 2 MB
-
-#  TAG: sslproxy_foreign_intermediate_certs
-# Note: This option is only available if Squid is rebuilt with the
-#       --with-openssl
-#
-#	Many origin servers fail to send their full server certificate
-#	chain for verification, assuming the client already has or can
-#	easily locate any missing intermediate certificates.
-#
-#	Squid uses the certificates from the specified file to fill in
-#	these missing chains when trying to validate origin server
-#	certificate chains.
-#
-#	The file is expected to contain zero or more PEM-encoded
-#	intermediate certificates. These certificates are not treated
-#	as trusted root certificates, and any self-signed certificate in
-#	this file will be ignored.
-#Default:
-# none
-
-#  TAG: sslproxy_cert_sign_hash
-# Note: This option is only available if Squid is rebuilt with the
-#       --with-openssl
-#
-#	Sets the hashing algorithm to use when signing generated certificates.
-#	Valid algorithm names depend on the OpenSSL library used. The following
-#	names are usually available: sha1, sha256, sha512, and md5. Please see
-#	your OpenSSL library manual for the available hashes. By default, Squids
-#	that support this option use sha256 hashes.
-#
-#	Squid does not forcefully purge cached certificates that were generated
-#	with an algorithm other than the currently configured one. They remain
-#	in the cache, subject to the regular cache eviction policy, and become
-#	useful if the algorithm changes again.
-#Default:
-# none
-
-#  TAG: ssl_bump
-# Note: This option is only available if Squid is rebuilt with the
-#       --with-openssl
-#
-#	This option is consulted when a CONNECT request is received on
-#	an http_port (or a new connection is intercepted at an
-#	https_port), provided that port was configured with an ssl-bump
-#	flag. The subsequent data on the connection is either treated as
-#	HTTPS and decrypted OR tunneled at TCP level without decryption,
-#	depending on the first matching bumping "action".
-#
-#	ssl_bump <action> [!]acl ...
-#
-#	The following bumping actions are currently supported:
-#
-#	    splice
-#		Become a TCP tunnel without decrypting proxied traffic.
-#		This is the default action.
-#
-#	    bump
-#		Establish a secure connection with the server and, using a
-#		mimicked server certificate, with the client.
-#
-#	    peek
-#		Receive client (step SslBump1) or server (step SslBump2)
-#		certificate while preserving the possibility of splicing the
-#		connection. Peeking at the server certificate (during step 2)
-#		usually precludes bumping of the connection at step 3.
-#
-#	    stare
-#		Receive client (step SslBump1) or server (step SslBump2)
-#		certificate while preserving the possibility of bumping the
-#		connection. Staring at the server certificate (during step 2)
-#		usually precludes splicing of the connection at step 3.
-#
-#	    terminate
-#		Close client and server connections.
-#
-#	Backward compatibility actions available at step SslBump1:
-#
-#	    client-first
-#		Bump the connection. Establish a secure connection with the
-#		client first, then connect to the server. This old mode does
-#		not allow Squid to mimic server SSL certificate and does not
-#		work with intercepted SSL connections.
-#
-#	    server-first
-#		Bump the connection. Establish a secure connection with the
-#		server first, then establish a secure connection with the
-#		client, using a mimicked server certificate. Works with both
-#		CONNECT requests and intercepted SSL connections, but does
-#		not allow to make decisions based on SSL handshake info.
-#
-#	    peek-and-splice
-#		Decide whether to bump or splice the connection based on 
-#		client-to-squid and server-to-squid SSL hello messages.
-#		XXX: Remove.
-#
-#	    none
-#		Same as the "splice" action.
-#
-#	All ssl_bump rules are evaluated at each of the supported bumping
-#	steps.  Rules with actions that are impossible at the current step are
-#	ignored. The first matching ssl_bump action wins and is applied at the
-#	end of the current step. If no rules match, the splice action is used.
-#	See the at_step ACL for a list of the supported SslBump steps.
-#
-#	This clause supports both fast and slow acl types.
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#
-#	See also: http_port ssl-bump, https_port ssl-bump, and acl at_step.
-#
-#
-#	# Example: Bump all TLS connections except those originating from
-#	# localhost or those going to example.com.
-#
-#	acl broken_sites ssl::server_name .example.com
-#	ssl_bump splice localhost
-#	ssl_bump splice broken_sites
-#	ssl_bump bump all
-#Default:
-# Become a TCP tunnel without decrypting proxied traffic.
-
-#  TAG: sslproxy_flags
-# Note: This option is only available if Squid is rebuilt with the
-#       --with-openssl
-#
-#	Various flags modifying the use of SSL while proxying https:// URLs:
-#	    DONT_VERIFY_PEER	Accept certificates that fail verification.
-#				For refined control, see sslproxy_cert_error.
-#	    NO_DEFAULT_CA	Don't use the default CA list built in
-#				to OpenSSL.
-#Default:
-# none
-
-#  TAG: sslproxy_cert_error
-# Note: This option is only available if Squid is rebuilt with the
-#       --with-openssl
-#
-#	Use this ACL to bypass server certificate validation errors.
-#
-#	For example, the following lines will bypass all validation errors
-#	when talking to servers for example.com. All other
-#	validation errors will result in ERR_SECURE_CONNECT_FAIL error.
-#
-#		acl BrokenButTrustedServers dstdomain example.com
-#		sslproxy_cert_error allow BrokenButTrustedServers
-#		sslproxy_cert_error deny all
-#
-#	This clause only supports fast acl types.
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#	Using slow acl types may result in server crashes
-#
-#	Without this option, all server certificate validation errors
-#	terminate the transaction to protect Squid and the client.
-#
-#	SQUID_X509_V_ERR_INFINITE_VALIDATION error cannot be bypassed
-#	but should not happen unless your OpenSSL library is buggy.
-#
-#	SECURITY WARNING:
-#		Bypassing validation errors is dangerous because an
-#		error usually implies that the server cannot be trusted
-#		and the connection may be insecure.
-#
-#	See also: sslproxy_flags and DONT_VERIFY_PEER.
-#Default:
-# Server certificate errors terminate the transaction.
-
-#  TAG: sslproxy_cert_sign
-# Note: This option is only available if Squid is rebuilt with the
-#       --with-openssl
-#
-#
-#        sslproxy_cert_sign <signing algorithm> acl ...
-#
-#        The following certificate signing algorithms are supported:
-#
-#	   signTrusted
-#		Sign using the configured CA certificate which is usually
-#		placed in and trusted by end-user browsers. This is the
-#		default for trusted origin server certificates.
-#
-#	   signUntrusted
-#		Sign to guarantee an X509_V_ERR_CERT_UNTRUSTED browser error.
-#		This is the default for untrusted origin server certificates
-#		that are not self-signed (see ssl::certUntrusted).
-#
-#	   signSelf
-#		Sign using a self-signed certificate with the right CN to
-#		generate a X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT error in the
-#		browser. This is the default for self-signed origin server
-#		certificates (see ssl::certSelfSigned).
-#
-#	This clause only supports fast acl types.
-#
-#	When sslproxy_cert_sign acl(s) match, Squid uses the corresponding
-#	signing algorithm to generate the certificate and ignores all
-#	subsequent sslproxy_cert_sign options (the first match wins). If no
-#	acl(s) match, the default signing algorithm is determined by errors
-#	detected when obtaining and validating the origin server certificate.
-#
-#	WARNING: SQUID_X509_V_ERR_DOMAIN_MISMATCH and ssl:certDomainMismatch can
-#	be used with sslproxy_cert_adapt, but if and only if Squid is bumping a
-#	CONNECT request that carries a domain name. In all other cases (CONNECT
-#	to an IP address or an intercepted SSL connection), Squid cannot detect
-#	the domain mismatch at certificate generation time when
-#	bump-server-first is used.
-#Default:
-# none
-
-#  TAG: sslproxy_cert_adapt
-# Note: This option is only available if Squid is rebuilt with the
-#       --with-openssl
-#
-#	
-#	sslproxy_cert_adapt <adaptation algorithm> acl ...
-#
-#	The following certificate adaptation algorithms are supported:
-#
-#	   setValidAfter
-#		Sets the "Not After" property to the "Not After" property of
-#		the CA certificate used to sign generated certificates.
-#
-#	   setValidBefore
-#		Sets the "Not Before" property to the "Not Before" property of
-#		the CA certificate used to sign generated certificates.
-#
-#	   setCommonName or setCommonName{CN}
-#		Sets Subject.CN property to the host name specified as a 
-#		CN parameter or, if no explicit CN parameter was specified,
-#		extracted from the CONNECT request. It is a misconfiguration
-#		to use setCommonName without an explicit parameter for
-#		intercepted or tproxied SSL connections.
-#		
-#	This clause only supports fast acl types.
-#
-#	Squid first groups sslproxy_cert_adapt options by adaptation algorithm.
-#	Within a group, when sslproxy_cert_adapt acl(s) match, Squid uses the
-#	corresponding adaptation algorithm to generate the certificate and
-#	ignores all subsequent sslproxy_cert_adapt options in that algorithm's
-#	group (i.e., the first match wins within each algorithm group). If no
-#	acl(s) match, the default mimicking action takes place.
-#
-#	WARNING: SQUID_X509_V_ERR_DOMAIN_MISMATCH and ssl:certDomainMismatch can
-#	be used with sslproxy_cert_adapt, but if and only if Squid is bumping a
-#	CONNECT request that carries a domain name. In all other cases (CONNECT
-#	to an IP address or an intercepted SSL connection), Squid cannot detect
-#	the domain mismatch at certificate generation time when
-#	bump-server-first is used.
-#Default:
-# none
-
-#  TAG: sslpassword_program
-# Note: This option is only available if Squid is rebuilt with the
-#       --with-openssl
-#
-#	Specify a program used for entering SSL key passphrases
-#	when using encrypted SSL certificate keys. If not specified
-#	keys must either be unencrypted, or Squid started with the -N
-#	option to allow it to query interactively for the passphrase.
-#
-#	The key file name is given as argument to the program allowing
-#	selection of the right password if you have multiple encrypted
-#	keys.
-#Default:
-# none
-
-# OPTIONS RELATING TO EXTERNAL SSL_CRTD 
-# -----------------------------------------------------------------------------
-
-#  TAG: sslcrtd_program
-# Note: This option is only available if Squid is rebuilt with the
-#       --enable-ssl-crtd
-#
-#	Specify the location and options of the executable for ssl_crtd process.
-#	/usr/lib/squid/ssl_crtd program requires -s and -M parameters
-#	For more information use:
-#		/usr/lib/squid/ssl_crtd -h
-#Default:
-# sslcrtd_program /usr/lib/squid/ssl_crtd -s /var/lib/ssl_db -M 4MB
-
-#  TAG: sslcrtd_children
-# Note: This option is only available if Squid is rebuilt with the
-#       --enable-ssl-crtd
-#
-#	The maximum number of processes spawn to service ssl server.
-#	The maximum this may be safely set to is 32.
-#	
-#	The startup= and idle= options allow some measure of skew in your
-#	tuning.
-#	
-#		startup=N
-#	
-#	Sets the minimum number of processes to spawn when Squid
-#	starts or reconfigures. When set to zero the first request will
-#	cause spawning of the first child process to handle it.
-#	
-#	Starting too few children temporary slows Squid under load while it
-#	tries to spawn enough additional processes to cope with traffic.
-#	
-#		idle=N
-#	
-#	Sets a minimum of how many processes Squid is to try and keep available
-#	at all times. When traffic begins to rise above what the existing
-#	processes can handle this many more will be spawned up to the maximum
-#	configured. A minimum setting of 1 is required.
-#	
-#	You must have at least one ssl_crtd process.
-#Default:
-# sslcrtd_children 32 startup=5 idle=1
-
-#  TAG: sslcrtvalidator_program
-# Note: This option is only available if Squid is rebuilt with the
-#       --with-openssl
-#
-#	Specify the location and options of the executable for ssl_crt_validator
-#	process.
-#
-#	Usage:  sslcrtvalidator_program [ttl=n] [cache=n] path ...
-#
-#	Options:
-#	  ttl=n         TTL in seconds for cached results. The default is 60 secs
-#	  cache=n       limit the result cache size. The default value is 2048
-#Default:
-# none
-
-#  TAG: sslcrtvalidator_children
-# Note: This option is only available if Squid is rebuilt with the
-#       --with-openssl
-#
-#	The maximum number of processes spawn to service SSL server.
-#	The maximum this may be safely set to is 32.
-#	
-#	The startup= and idle= options allow some measure of skew in your
-#	tuning.
-#	
-#		startup=N
-#	
-#	Sets the minimum number of processes to spawn when Squid
-#	starts or reconfigures. When set to zero the first request will
-#	cause spawning of the first child process to handle it.
-#	
-#	Starting too few children temporary slows Squid under load while it
-#	tries to spawn enough additional processes to cope with traffic.
-#	
-#		idle=N
-#	
-#	Sets a minimum of how many processes Squid is to try and keep available
-#	at all times. When traffic begins to rise above what the existing
-#	processes can handle this many more will be spawned up to the maximum
-#	configured. A minimum setting of 1 is required.
-#
-#		concurrency=
-#	
-#	The number of requests each certificate validator helper can handle in
-#	parallel. A value of 0 indicates the certficate validator does not
-#	support concurrency. Defaults to 1.
-#	
-#	When this directive is set to a value >= 1 then the protocol
-#	used to communicate with the helper is modified to include
-#	a request ID in front of the request/response. The request
-#	ID from the request must be echoed back with the response
-#	to that request.
-#	
-#	You must have at least one ssl_crt_validator process.
-#Default:
-# sslcrtvalidator_children 32 startup=5 idle=1 concurrency=1
-
-# OPTIONS WHICH AFFECT THE NEIGHBOR SELECTION ALGORITHM
-# -----------------------------------------------------------------------------
-
-#  TAG: cache_peer
-#	To specify other caches in a hierarchy, use the format:
-#	
-#		cache_peer hostname type http-port icp-port [options]
-#	
-#	For example,
-#	
-#	#                                        proxy  icp
-#	#          hostname             type     port   port  options
-#	#          -------------------- -------- ----- -----  -----------
-#	cache_peer parent.foo.net       parent    3128  3130  default
-#	cache_peer sib1.foo.net         sibling   3128  3130  proxy-only
-#	cache_peer sib2.foo.net         sibling   3128  3130  proxy-only
-#	cache_peer example.com          parent    80       0  default
-#	cache_peer cdn.example.com      sibling   3128     0  
-#	
-#	      type:	either 'parent', 'sibling', or 'multicast'.
-#	
-#	proxy-port:	The port number where the peer accept HTTP requests.
-#			For other Squid proxies this is usually 3128
-#			For web servers this is usually 80
-#	
-#	  icp-port:	Used for querying neighbor caches about objects.
-#			Set to 0 if the peer does not support ICP or HTCP.
-#			See ICP and HTCP options below for additional details.
-#	
-#	
-#	==== ICP OPTIONS ====
-#	
-#	You MUST also set icp_port and icp_access explicitly when using these options.
-#	The defaults will prevent peer traffic using ICP.
-#	
-#	
-#	no-query	Disable ICP queries to this neighbor.
-#	
-#	multicast-responder
-#			Indicates 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.
-#	
-#	background-ping
-#			To only send ICP queries to this neighbor infrequently.
-#			This is used to keep the neighbor round trip time updated
-#			and is usually used in conjunction with weighted-round-robin.
-#	
-#	
-#	==== HTCP OPTIONS ====
-#	
-#	You MUST also set htcp_port and htcp_access explicitly when using these options.
-#	The defaults will prevent peer traffic using HTCP.
-#	
-#	
-#	htcp		Send HTCP, instead of ICP, queries to the neighbor.
-#			You probably also want to set the "icp-port" to 4827
-#			instead of 3130. This directive accepts a comma separated
-#			list of options described below.
-#	
-#	htcp=oldsquid	Send HTCP to old Squid versions (2.5 or earlier).
-#	
-#	htcp=no-clr	Send HTCP to the neighbor but without
-#			sending any CLR requests.  This cannot be used with
-#			only-clr.
-#	
-#	htcp=only-clr	Send HTCP to the neighbor but ONLY CLR requests.
-#			This cannot be used with no-clr.
-#	
-#	htcp=no-purge-clr
-#			Send HTCP to the neighbor including CLRs but only when
-#			they do not result from PURGE requests.
-#	
-#	htcp=forward-clr
-#			Forward any HTCP CLR requests this proxy receives to the peer.
-#	
-#	
-#	==== PEER SELECTION METHODS ====
-#	
-#	The default peer selection method is ICP, with the first responding peer
-#	being used as source. These options can be used for better load balancing.
-#	
-#	
-#	default		This is a parent cache which can be used as a "last-resort"
-#			if a peer cannot be located by any of the peer-selection methods.
-#			If specified more than once, only the first is used.
-#	
-#	round-robin	Load-Balance parents which should be used in a round-robin
-#			fashion in the absence of any ICP queries.
-#			weight=N can be used to add bias.
-#	
-#	weighted-round-robin
-#			Load-Balance parents which should be used in a round-robin
-#			fashion with the frequency of each parent being based on the
-#			round trip time. Closer parents are used more often.
-#			Usually used for background-ping parents.
-#			weight=N can be used to add bias.
-#	
-#	carp		Load-Balance parents which should be used as a CARP array.
-#			The requests will be distributed among the parents based on the
-#			CARP load balancing hash function based on their weight.
-#	
-#	userhash	Load-balance parents based on the client proxy_auth or ident username.
-#	
-#	sourcehash	Load-balance parents based on the client source IP.
-#
-#	multicast-siblings
-#			To be used only for cache peers of type "multicast".
-#			ALL members of this multicast group have "sibling"
-#			relationship with it, not "parent".  This is to a multicast
-#			group when the requested object would be fetched only from
-#			a "parent" cache, anyway.  It's useful, e.g., when
-#			configuring a pool of redundant Squid proxies, being
-#			members of the same multicast group.
-#	
-#	
-#	==== PEER SELECTION OPTIONS ====
-#	
-#	weight=N	use to affect the selection of a peer during any weighted
-#			peer-selection mechanisms.
-#			The weight must be an integer; default is 1,
-#			larger weights are favored more.
-#			This option does not affect parent selection if a peering
-#			protocol is not in use.
-#	
-#	basetime=N	Specify a base amount to be subtracted from round trip
-#			times of parents.
-#			It is subtracted before division by weight in calculating
-#			which parent to fectch from. If the rtt is less than the
-#			base time the rtt is set to a minimal value.
-#	
-#	ttl=N		Specify a TTL to use when sending multicast ICP queries
-#			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.
-#	
-#	no-delay	To prevent access to this neighbor from influencing the
-#			delay pools.
-#	
-#	digest-url=URL	Tell Squid to fetch the cache digest (if digests are
-#			enabled) for this host from the specified URL rather
-#			than the Squid default location.
-#	
-#	
-#	==== CARP OPTIONS ====
-#	
-#	carp-key=key-specification
-#			use a different key than the full URL to hash against the peer.
-#			the key-specification is a comma-separated list of the keywords			
-#			scheme, host, port, path, params
-#			Order is not important.
-#	
-#	==== ACCELERATOR / REVERSE-PROXY OPTIONS ====
-#	
-#	originserver	Causes this parent to be contacted as an origin server.
-#			Meant to be used in accelerator setups when the peer
-#			is a web server.
-#	
-#	forceddomain=name
-#			Set the Host header of requests forwarded to this peer.
-#			Useful in accelerator setups where the server (peer)
-#			expects a certain domain name but clients may request
-#			others. ie example.com or www.example.com
-#	
-#	no-digest	Disable request of cache digests.
-#	
-#	no-netdb-exchange
-#			Disables requesting ICMP RTT database (NetDB).
-#	
-#	
-#	==== AUTHENTICATION OPTIONS ====
-#	
-#	login=user:password
-#			If this is a personal/workgroup proxy and your parent
-#			requires proxy authentication.
-#			
-#			Note: The string can include URL escapes (i.e. %20 for
-#			spaces). This also means % must be written as %%.
-#	
-#	login=PASSTHRU
-#			Send login details received from client to this peer.
-#			Both Proxy- and WWW-Authorization headers are passed
-#			without alteration to the peer.
-#			Authentication is not required by Squid for this to work.
-#			
-#			Note: This will pass any form of authentication but
-#			only Basic auth will work through a proxy unless the
-#			connection-auth options are also used.
-#
-#	login=PASS	Send login details received from client to this peer.
-#			Authentication is not required by this option.
-#			
-#			If there are no client-provided authentication headers
-#			to pass on, but username and password are available
-#			from an external ACL user= and password= result tags
-#			they may be sent instead.
-#			
-#			Note: To combine this with proxy_auth both proxies must
-#			share the same user database as HTTP only allows for
-#			a single login (one for proxy, one for origin server).
-#			Also be warned this will expose your users proxy
-#			password to the peer. USE WITH CAUTION
-#	
-#	login=*:password
-#			Send the username to the upstream cache, but with a
-#			fixed password. This is meant to be used when the peer
-#			is in another administrative domain, but it is still
-#			needed to identify each user.
-#			The star can optionally be followed by some extra
-#			information which is added to the username. This can
-#			be used to identify this proxy to the peer, similar to
-#			the login=username:password option above.
-#	
-#	login=NEGOTIATE
-#			If this is a personal/workgroup proxy and your parent
-#			requires a secure proxy authentication.
-#			The first principal from the default keytab or defined by
-#			the environment variable KRB5_KTNAME will be used. 
-#	
-#			WARNING: The connection may transmit requests from multiple
-#			clients. Negotiate often assumes end-to-end authentication
-#			and a single-client. Which is not strictly true here.
-#	
-#	login=NEGOTIATE:principal_name
-#			If this is a personal/workgroup proxy and your parent
-#			requires a secure proxy authentication. 
-#			The principal principal_name from the default keytab or
-#			defined by the environment variable KRB5_KTNAME will be
-#			used.
-#	
-#			WARNING: The connection may transmit requests from multiple
-#			clients. Negotiate often assumes end-to-end authentication
-#			and a single-client. Which is not strictly true here.
-#	
-#	connection-auth=on|off
-#			Tell Squid that this peer does or not support Microsoft
-#			connection oriented authentication, and any such
-#			challenges received from there should be ignored.
-#			Default is auto to automatically determine the status
-#			of the peer.
-#	
-#	
-#	==== SSL / HTTPS / TLS OPTIONS ====
-#	
-#	ssl		Encrypt connections to this peer with SSL/TLS.
-#	
-#	sslcert=/path/to/ssl/certificate
-#			A client SSL certificate to use when connecting to
-#			this peer.
-#	
-#	sslkey=/path/to/ssl/key
-#			The private SSL key corresponding to sslcert above.
-#			If 'sslkey' is not specified 'sslcert' is assumed to
-#			reference a combined file containing both the
-#			certificate and the key.
-#	
-#	sslversion=1|2|3|4|5|6
-#			The SSL version to use when connecting to this peer
-#				1 = automatic (default)
-#				2 = SSL v2 only
-#				3 = SSL v3 only
-#				4 = TLS v1.0 only
-#				5 = TLS v1.1 only
-#				6 = TLS v1.2 only
-#	
-#	sslcipher=...	The list of valid SSL ciphers to use when connecting
-#			to this peer.
-#	
-#	ssloptions=... 	Specify various SSL implementation options:
-#
-#			    NO_SSLv2    Disallow the use of SSLv2
-#			    NO_SSLv3    Disallow the use of SSLv3
-#			    NO_TLSv1    Disallow the use of TLSv1.0
-#			    NO_TLSv1_1  Disallow the use of TLSv1.1
-#			    NO_TLSv1_2  Disallow the use of TLSv1.2
-#
-#			    SINGLE_DH_USE
-#				      Always create a new key when using
-#				      temporary/ephemeral DH key exchanges
-#
-#			    NO_TICKET
-#				      Disable use of RFC5077 session tickets. Some servers
-#				      may have problems understanding the TLS extension due
-#				      to ambiguous specification in RFC4507.
-#
-#			    ALL       Enable various bug workarounds
-#				      suggested as "harmless" by OpenSSL
-#				      Be warned that this reduces SSL/TLS
-#				      strength to some attacks.
-#
-#			See the OpenSSL SSL_CTX_set_options documentation for a
-#			more complete list.
-#	
-#	sslcafile=... 	A file containing additional CA certificates to use
-#			when verifying the peer certificate.
-#	
-#	sslcapath=...	A directory containing additional CA certificates to
-#			use when verifying the peer certificate.
-#	
-#	sslcrlfile=... 	A certificate revocation list file to use when
-#			verifying the peer certificate.
-#	
-#	sslflags=...	Specify various flags modifying the SSL implementation:
-#	
-#			DONT_VERIFY_PEER
-#				Accept certificates even if they fail to
-#				verify.
-#			NO_DEFAULT_CA
-#				Don't use the default CA list built in
-#				to OpenSSL.
-#			DONT_VERIFY_DOMAIN
-#				Don't verify the peer certificate
-#				matches the server name
-#	
-#	ssldomain= 	The peer name as advertised in it's certificate.
-#			Used for verifying the correctness of the received peer
-#			certificate. If not specified the peer hostname will be
-#			used.
-#	
-#	front-end-https
-#			Enable the "Front-End-Https: On" header needed when
-#			using Squid as a SSL frontend in front of Microsoft OWA.
-#			See MS KB document Q307347 for details on this header.
-#			If set to auto the header will only be added if the
-#			request is forwarded as a https:// URL.
-#	
-#	
-#	==== GENERAL OPTIONS ====
-#	
-#	connect-timeout=N
-#			A peer-specific connect timeout.
-#			Also see the peer_connect_timeout directive.
-#	
-#	connect-fail-limit=N
-#			How many times connecting to a peer must fail before
-#			it is marked as down. Standby connection failures
-#			count towards this limit. Default is 10.
-#	
-#	allow-miss	Disable Squid's use of only-if-cached when forwarding
-#			requests to siblings. This is primarily useful when
-#			icp_hit_stale is used by the sibling. Excessive use
-#			of this option may result in forwarding loops. One way
-#			to prevent peering loops when using this option, is to
-#			deny cache peer usage on requests from a peer:
-#			acl fromPeer ...
-#			cache_peer_access peerName deny fromPeer
-#	
-#	max-conn=N 	Limit the number of concurrent connections the Squid
-#			may open to this peer, including already opened idle
-#			and standby connections. There is no peer-specific
-#			connection limit by default.
-#	
-#			A peer exceeding the limit is not used for new
-#			requests unless a standby connection is available.
-#	
-#			max-conn currently works poorly with idle persistent
-#			connections: When a peer reaches its max-conn limit,
-#			and there are idle persistent connections to the peer,
-#			the peer may not be selected because the limiting code
-#			does not know whether Squid can reuse those idle
-#			connections.
-#	
-#	standby=N	Maintain a pool of N "hot standby" connections to an
-#			UP peer, available for requests when no idle
-#			persistent connection is available (or safe) to use.
-#			By default and with zero N, no such pool is maintained.
-#			N must not exceed the max-conn limit (if any).
-#	
-#			At start or after reconfiguration, Squid opens new TCP
-#			standby connections until there are N connections
-#			available and then replenishes the standby pool as
-#			opened connections are used up for requests. A used
-#			connection never goes back to the standby pool, but
-#			may go to the regular idle persistent connection pool
-#			shared by all peers and origin servers.
-#	
-#			Squid never opens multiple new standby connections
-#			concurrently.  This one-at-a-time approach minimizes
-#			flooding-like effect on peers. Furthermore, just a few
-#			standby connections should be sufficient in most cases
-#			to supply most new requests with a ready-to-use
-#			connection.
-#	
-#			Standby connections obey server_idle_pconn_timeout.
-#			For the feature to work as intended, the peer must be
-#			configured to accept and keep them open longer than
-#			the idle timeout at the connecting Squid, to minimize
-#			race conditions typical to idle used persistent
-#			connections. Default request_timeout and
-#			server_idle_pconn_timeout values ensure such a
-#			configuration.
-#	
-#	name=xxx	Unique name for the peer.
-#			Required if you have multiple peers on the same host
-#			but different ports.
-#			This name can be used in cache_peer_access and similar
-#			directives to identify the peer.
-#			Can be used by outgoing access controls through the
-#			peername ACL type.
-#	
-#	no-tproxy	Do not use the client-spoof TPROXY support when forwarding
-#			requests to this peer. Use normal address selection instead.
-#			This overrides the spoof_client_ip ACL.
-#	
-#	proxy-only	objects fetched from the peer will not be stored locally.
-#	
-#Default:
-# none
-
-#  TAG: cache_peer_domain
-#	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 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_access' tag in the ACL
-#		  section.
-#Default:
-# none
-
-#  TAG: cache_peer_access
-#	Restricts usage of cache_peer proxies.
-#
-#	Usage:
-#		cache_peer_access peer-name allow|deny [!]aclname ...
-#
-#	For the required peer-name parameter, use either the value of the
-#	cache_peer name=value parameter or, if name=value is missing, the
-#	cache_peer hostname parameter.
-#
-#	This directive narrows down the selection of peering candidates, but
-#	does not determine the order in which the selected candidates are
-#	contacted. That order is determined by the peer selection algorithms
-#	(see PEER SELECTION sections in the cache_peer documentation).
-#
-#	If a deny rule matches, the corresponding peer will not be contacted
-#	for the current transaction -- Squid will not send ICP queries and
-#	will not forward HTTP requests to that peer. An allow match leaves
-#	the corresponding peer in the selection. The first match for a given
-#	peer wins for that peer.
-#
-#	The relative order of cache_peer_access directives for the same peer
-#	matters. The relative order of any two cache_peer_access directives
-#	for different peers does not matter. To ease interpretation, it is a
-#	good idea to group cache_peer_access directives for the same peer
-#	together.
-#
-#	A single cache_peer_access directive may be evaluated multiple times
-#	for a given transaction because individual peer selection algorithms
-#	may check it independently from each other. These redundant checks
-#	may be optimized away in future Squid versions.
-#
-#	This clause only supports fast acl types.
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#Default:
-# No peer usage restrictions.
-
-#  TAG: neighbor_type_domain
-#	Modify the cache_peer neighbor type when passing requests
-#	about specific domains to the peer.
-#
-#	Usage:
-#		 neighbor_type_domain neighbor parent|sibling domain domain ...
-#
-#	For example:
-#		cache_peer foo.example.com parent 3128 3130
-#		neighbor_type_domain foo.example.com sibling .au .de
-#
-#	The above configuration treats all requests to foo.example.com as a
-#	parent proxy unless the request is for a .au or .de ccTLD domain name.
-#Default:
-# The peer type from cache_peer directive is used for all requests to that peer.
-
-#  TAG: dead_peer_timeout	(seconds)
-#	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.
-#
-#	This timeout also affects when Squid expects to receive ICP
-#	replies from peers.  If more than 'dead_peer' seconds have
-#	passed since the last ICP reply was received, Squid will not
-#	expect to receive an ICP reply on the next query.  Thus, if
-#	your time between requests is greater than this timeout, you
-#	will see a lot of requests sent DIRECT to origin servers
-#	instead of to your parents.
-#Default:
-# dead_peer_timeout 10 seconds
-
-#  TAG: forward_max_tries
-#	Controls how many different forward paths Squid will try
-#	before giving up. See also forward_timeout.
-#	
-#	NOTE: connect_retries (default: none) can make each of these
-#	possible forwarding paths be tried multiple times.
-#Default:
-# forward_max_tries 25
-
-# MEMORY CACHE OPTIONS
-# -----------------------------------------------------------------------------
-
-#  TAG: cache_mem	(bytes)
-#	NOTE: THIS PARAMETER DOES NOT SPECIFY THE MAXIMUM PROCESS SIZE.
-#	IT ONLY PLACES A LIMIT ON HOW MUCH ADDITIONAL MEMORY SQUID WILL
-#	USE AS A MEMORY CACHE OF OBJECTS. SQUID USES MEMORY FOR OTHER
-#	THINGS AS WELL. SEE THE SQUID FAQ SECTION 8 FOR DETAILS.
-#
-#	'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.
-#
-#	If shared memory caching is enabled, Squid does not use the shared
-#	cache space for in-transit objects, but they still consume as much
-#	local memory as they need. For more details about the shared memory
-#	cache, see memory_cache_shared.
-#Default:
-# cache_mem 256 MB
-
-#  TAG: maximum_object_size_in_memory	(bytes)
-#	Objects greater than this size will not be attempted to kept in
-#	the memory cache. This should be set high enough to keep objects
-#	accessed frequently in memory to improve performance whilst low
-#	enough to keep larger objects from hoarding cache_mem.
-#Default:
-# maximum_object_size_in_memory 512 KB
-
-#  TAG: memory_cache_shared	on|off
-#	Controls whether the memory cache is shared among SMP workers.
-#
-#	The shared memory cache is meant to occupy cache_mem bytes and replace
-#	the non-shared memory cache, although some entities may still be
-#	cached locally by workers for now (e.g., internal and in-transit
-#	objects may be served from a local memory cache even if shared memory
-#	caching is enabled).
-#
-#	By default, the memory cache is shared if and only if all of the
-#	following conditions are satisfied: Squid runs in SMP mode with
-#	multiple workers, cache_mem is positive, and Squid environment
-#	supports required IPC primitives (e.g., POSIX shared memory segments
-#	and GCC-style atomic operations).
-#
-#	To avoid blocking locks, shared memory uses opportunistic algorithms
-#	that do not guarantee that every cachable entity that could have been
-#	shared among SMP workers will actually be shared.
-#Default:
-# "on" where supported if doing memory caching with multiple SMP workers.
-
-#  TAG: memory_cache_mode
-#	Controls which objects to keep in the memory cache (cache_mem)
-#
-#	always	Keep most recently fetched objects in memory (default)
-#
-#	disk	Only disk cache hits are kept in memory, which means
-#		an object must first be cached on disk and then hit
-#		a second time before cached in memory.
-#
-#	network	Only objects fetched from network is kept in memory
-#Default:
-# Keep the most recently fetched objects in memory
-
-#  TAG: memory_replacement_policy
-#	The memory replacement policy parameter determines which
-#	objects are purged from memory when memory space is needed.
-#
-#	See cache_replacement_policy for details on algorithms.
-#Default:
-# memory_replacement_policy lru
-
-# DISK CACHE OPTIONS
-# -----------------------------------------------------------------------------
-
-#  TAG: cache_replacement_policy
-#	The cache replacement policy parameter determines which
-#	objects are evicted (replaced) when disk space is needed.
-#
-#	    lru       : Squid's original list based LRU policy
-#	    heap GDSF : Greedy-Dual Size Frequency
-#	    heap LFUDA: Least Frequently Used with Dynamic Aging
-#	    heap LRU  : LRU policy implemented using a heap
-#
-#	Applies to any cache_dir lines listed below this directive.
-#
-#	The LRU policies keeps recently referenced objects.
-#
-#	The heap GDSF policy optimizes object hit rate by keeping smaller
-#	popular objects in cache so it has a better chance of getting a
-#	hit.  It achieves a lower byte hit rate than LFUDA though since
-#	it evicts larger (possibly popular) objects.
-#
-#	The heap LFUDA policy keeps popular objects in cache regardless of
-#	their size and thus optimizes byte hit rate at the expense of
-#	hit rate since one large, popular object will prevent many
-#	smaller, slightly less popular objects from being cached.
-#
-#	Both policies utilize a dynamic aging mechanism that prevents
-#	cache pollution that can otherwise occur with frequency-based
-#	replacement policies.
-#
-#	NOTE: if using the LFUDA replacement policy you should increase
-#	the value of maximum_object_size above its default of 4 MB to
-#	to maximize the potential byte hit rate improvement of LFUDA.
-#
-#	For more information about the GDSF and LFUDA cache replacement
-#	policies see http://www.hpl.hp.com/techreports/1999/HPL-1999-69.html
-#	and http://fog.hpl.external.hp.com/techreports/98/HPL-98-173.html.
-#Default:
-# cache_replacement_policy lru
-
-#  TAG: minimum_object_size	(bytes)
-#	Objects smaller than this size will NOT be saved on disk.  The
-#	value is specified in bytes, and the default is 0 KB, which
-#	means all responses can be stored.
-#Default:
-# no limit
-
-#  TAG: maximum_object_size	(bytes)
-#	Set the default value for max-size parameter on any cache_dir.
-#	The value is specified in bytes, and the default is 4 MB.
-#	
-#	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 hit ratio more than you want to
-#	save bandwidth you should leave this low.
-#	
-#	NOTE: if using the LFUDA replacement policy you should increase
-#	this value to maximize the byte hit rate improvement of LFUDA!
-#	See cache_replacement_policy for a discussion of this policy.
-#Default:
-# maximum_object_size 4 MB
-maximum_object_size 153600 KB
-
-#  TAG: cache_dir
-#	Format:
-#		cache_dir Type Directory-Name Fs-specific-data [options]
-#
-#	You can specify multiple cache_dir lines to spread the
-#	cache among different disk partitions.
-#
-#	Type specifies the kind of storage system to use. Only "ufs"
-#	is built by default. To enable any of the other storage systems
-#	see the --enable-storeio configure option.
-#
-#	'Directory' is a top-level directory where cache swap
-#	files will be stored.  If you want to use an entire disk
-#	for caching, 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.
-#
-#	In SMP configurations, cache_dir must not precede the workers option
-#	and should use configuration macros or conditionals to give each
-#	worker interested in disk caching a dedicated cache directory.
-#
-#
-#	====  The ufs store type  ====
-#
-#	"ufs" is the old well-known Squid storage format that has always
-#	been there.
-#
-#	Usage:
-#		cache_dir ufs Directory-Name Mbytes L1 L2 [options]
-#
-#	'Mbytes' is the amount of disk space (MB) to use under this
-#	directory.  The default is 100 MB.  Change this to suit your
-#	configuration.  Do NOT put the size of your disk drive here.
-#	Instead, if you want Squid to use the entire disk drive,
-#	subtract 20% and use that value.
-#
-#	'L1' is the number of first-level subdirectories which
-#	will be created under the 'Directory'.  The default is 16.
-#
-#	'L2' is the number of second-level subdirectories which
-#	will be created under each first-level directory.  The default
-#	is 256.
-#
-#
-#	====  The aufs store type  ====
-#
-#	"aufs" uses the same storage format as "ufs", utilizing
-#	POSIX-threads to avoid blocking the main Squid process on
-#	disk-I/O. This was formerly known in Squid as async-io.
-#
-#	Usage:
-#		cache_dir aufs Directory-Name Mbytes L1 L2 [options]
-#
-#	see argument descriptions under ufs above
-#
-#
-#	====  The diskd store type  ====
-#
-#	"diskd" uses the same storage format as "ufs", utilizing a
-#	separate process to avoid blocking the main Squid process on
-#	disk-I/O.
-#
-#	Usage:
-#		cache_dir diskd Directory-Name Mbytes L1 L2 [options] [Q1=n] [Q2=n]
-#
-#	see argument descriptions under ufs above
-#
-#	Q1 specifies the number of unacknowledged I/O requests when Squid
-#	stops opening new files. If this many messages are in the queues,
-#	Squid won't open new files. Default is 64
-#
-#	Q2 specifies the number of unacknowledged messages when Squid
-#	starts blocking.  If this many messages are in the queues,
-#	Squid blocks until it receives some replies. Default is 72
-#
-#	When Q1 < Q2 (the default), the cache directory is optimized
-#	for lower response time at the expense of a decrease in hit
-#	ratio.  If Q1 > Q2, the cache directory is optimized for
-#	higher hit ratio at the expense of an increase in response
-#	time.
-#
-#
-#	====  The rock store type  ====
-#
-#	Usage:
-#	    cache_dir rock Directory-Name Mbytes [options]
-#
-#	The Rock Store type is a database-style storage. All cached
-#	entries are stored in a "database" file, using fixed-size slots.
-#	A single entry occupies one or more slots.
-#
-#	If possible, Squid using Rock Store creates a dedicated kid
-#	process called "disker" to avoid blocking Squid worker(s) on disk
-#	I/O. One disker kid is created for each rock cache_dir.  Diskers
-#	are created only when Squid, running in daemon mode, has support
-#	for the IpcIo disk I/O module.
-#
-#	swap-timeout=msec: Squid will not start writing a miss to or
-#	reading a hit from disk if it estimates that the swap operation
-#	will take more than the specified number of milliseconds. By
-#	default and when set to zero, disables the disk I/O time limit
-#	enforcement. Ignored when using blocking I/O module because
-#	blocking synchronous I/O does not allow Squid to estimate the
-#	expected swap wait time.
-#
-#	max-swap-rate=swaps/sec: Artificially limits disk access using
-#	the specified I/O rate limit. Swap out requests that
-#	would cause the average I/O rate to exceed the limit are
-#	delayed. Individual swap in requests (i.e., hits or reads) are
-#	not delayed, but they do contribute to measured swap rate and
-#	since they are placed in the same FIFO queue as swap out
-#	requests, they may wait longer if max-swap-rate is smaller.
-#	This is necessary on file systems that buffer "too
-#	many" writes and then start blocking Squid and other processes
-#	while committing those writes to disk.  Usually used together
-#	with swap-timeout to avoid excessive delays and queue overflows
-#	when disk demand exceeds available disk "bandwidth". By default
-#	and when set to zero, disables the disk I/O rate limit
-#	enforcement. Currently supported by IpcIo module only.
-#
-#	slot-size=bytes: The size of a database "record" used for
-#	storing cached responses. A cached response occupies at least
-#	one slot and all database I/O is done using individual slots so
-#	increasing this parameter leads to more disk space waste while
-#	decreasing it leads to more disk I/O overheads. Should be a
-#	multiple of your operating system I/O page size. Defaults to
-#	16KBytes. A housekeeping header is stored with each slot and
-#	smaller slot-sizes will be rejected. The header is smaller than
-#	100 bytes.
-#
-#
-#	==== COMMON OPTIONS ====
-#
-#	no-store	no new objects should be stored to this cache_dir.
-#
-#	min-size=n	the minimum object size in bytes this cache_dir
-#			will accept.  It's used to restrict a cache_dir
-#			to only store large objects (e.g. AUFS) while
-#			other stores are optimized for smaller objects
-#			(e.g. Rock).
-#			Defaults to 0.
-#
-#	max-size=n	the maximum object size in bytes this cache_dir
-#			supports.
-#			The value in maximum_object_size directive sets
-#			the default unless more specific details are
-#			available (ie a small store capacity).
-#
-#	Note: To make optimal use of the max-size limits you should order
-#	the cache_dir lines with the smallest max-size value first.
-#
-#Default:
-# No disk cache. Store cache ojects only in memory.
-#
-
-# Uncomment and adjust the following to add a disk cache directory.
-#cache_dir ufs /var/spool/squid 100 16 256
-cache_dir ufs /var/spool/squid3 16384 16 1024
-
-#  TAG: store_dir_select_algorithm
-#	How Squid selects which cache_dir to use when the response
-#	object will fit into more than one.
-#
-#	Regardless of which algorithm is used the cache_dir min-size
-#	and max-size parameters are obeyed. As such they can affect
-#	the selection algorithm by limiting the set of considered
-#	cache_dir.
-#
-#	Algorithms:
-#
-#		least-load
-#
-#	This algorithm is suited to caches with similar cache_dir
-#	sizes and disk speeds.
-#
-#	The disk with the least I/O pending is selected.
-#	When there are multiple disks with the same I/O load ranking
-#	the cache_dir with most available capacity is selected.
-#
-#	When a mix of cache_dir sizes are configured the faster disks
-#	have a naturally lower I/O loading and larger disks have more
-#	capacity. So space used to store objects and data throughput
-#	may be very unbalanced towards larger disks.
-#
-#
-#		round-robin
-#
-#	This algorithm is suited to caches with unequal cache_dir
-#	disk sizes.
-#
-#	Each cache_dir is selected in a rotation. The next suitable
-#	cache_dir is used.
-#
-#	Available cache_dir capacity is only considered in relation
-#	to whether the object will fit and meets the min-size and
-#	max-size parameters.
-#
-#	Disk I/O loading is only considered to prevent overload on slow
-#	disks. This algorithm does not spread objects by size, so any
-#	I/O loading per-disk may appear very unbalanced and volatile.
-#
-#	If several cache_dirs use similar min-size, max-size, or other
-#	limits to to reject certain responses, then do not group such
-#	cache_dir lines together, to avoid round-robin selection bias
-#	towards the first cache_dir after the group. Instead, interleave
-#	cache_dir lines from different groups. For example:
-#
-#		store_dir_select_algorithm round-robin
-#		cache_dir rock /hdd1 ... min-size=100000
-#		cache_dir rock /ssd1 ... max-size=99999
-#		cache_dir rock /hdd2 ... min-size=100000
-#		cache_dir rock /ssd2 ... max-size=99999
-#		cache_dir rock /hdd3 ... min-size=100000
-#		cache_dir rock /ssd3 ... max-size=99999
-#Default:
-# store_dir_select_algorithm least-load
-
-#  TAG: max_open_disk_fds
-#	To avoid having disk as the I/O bottleneck Squid can optionally
-#	bypass the on-disk cache if more than this amount of disk file
-#	descriptors are open.
-#
-#	A value of 0 indicates no limit.
-#Default:
-# no limit
-
-#  TAG: cache_swap_low	(percent, 0-100)
-#	The low-water mark for AUFS/UFS/diskd cache object eviction by
-#	the cache_replacement_policy algorithm.
-#
-#	Removal begins when the swap (disk) usage of a cache_dir is
-#	above this low-water mark and attempts to maintain utilization
-#	near the low-water mark.
-#
-#	As swap utilization increases towards the high-water mark set
-#	by cache_swap_high object eviction becomes more agressive.
-#
-#	The value difference in percentages between low- and high-water
-#	marks represent an eviction rate of 300 objects per second and
-#	the rate continues to scale in agressiveness by multiples of
-#	this above the high-water mark.
-#
-#	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.
-#
-#	See also cache_swap_high and cache_replacement_policy
-#Default:
-# cache_swap_low 90
-
-#  TAG: cache_swap_high	(percent, 0-100)
-#	The high-water mark for AUFS/UFS/diskd cache object eviction by
-#	the cache_replacement_policy algorithm.
-#
-#	Removal begins when the swap (disk) usage of a cache_dir is
-#	above the low-water mark set by cache_swap_low and attempts to
-#	maintain utilization near the low-water mark.
-#
-#	As swap utilization increases towards this high-water mark object
-#	eviction becomes more agressive.
-#
-#	The value difference in percentages between low- and high-water
-#	marks represent an eviction rate of 300 objects per second and
-#	the rate continues to scale in agressiveness by multiples of
-#	this above the high-water mark.
-#
-#	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.
-#
-#	See also cache_swap_low and cache_replacement_policy
-#Default:
-# cache_swap_high 95
-
-# LOGFILE OPTIONS
-# -----------------------------------------------------------------------------
-
-#  TAG: logformat
-#	Usage:
-#
-#	logformat <name> <format specification>
-#
-#	Defines an access log format.
-#
-#	The <format specification> is a string with embedded % format codes
-#
-#	% format codes all follow the same basic structure where all but
-#	the formatcode is optional. Output strings are automatically escaped
-#	as required according to their context and the output format
-#	modifiers are usually not needed, but can be specified if an explicit
-#	output format is desired.
-#
-#		% ["|[|'|#] [-] [[0]width] [{argument}] formatcode
-#
-#		"	output in quoted string format
-#		[	output in squid text log format as used by log_mime_hdrs
-#		#	output in URL quoted format
-#		'	output as-is
-#
-#		-	left aligned
-#
-#		width	minimum and/or maximum field width:
-#			    [width_min][.width_max]
-#			When minimum starts with 0, the field is zero-padded.
-#			String values exceeding maximum width are truncated.
-#
-#		{arg}	argument such as header name etc
-#
-#	Format codes:
-#
-#		%	a literal % character
-#		sn	Unique sequence number per log line entry
-#		err_code    The ID of an error response served by Squid or
-#				a similar internal error identifier.
-#		err_detail  Additional err_code-dependent error information.
-#		note	The annotation specified by the argument. Also
-#			logs the adaptation meta headers set by the
-#			adaptation_meta configuration parameter.
-#			If no argument given all annotations logged.
-#			The argument may include a separator to use with
-#			annotation values:
-#                            name[:separator]
-#			By default, multiple note values are separated with ","
-#			and multiple notes are separated with "\r\n".
-#			When logging named notes with %{name}note, the
-#			explicitly configured separator is used between note
-#			values. When logging all notes with %note, the
-#			explicitly configured separator is used between
-#			individual notes. There is currently no way to
-#			specify both value and notes separators when logging
-#			all notes with %note.
-#
-#	Connection related format codes:
-#
-#		>a	Client source IP address
-#		>A	Client FQDN
-#		>p	Client source port
-#		>eui	Client source EUI (MAC address, EUI-48 or EUI-64 identifier)
-#		>la	Local IP address the client connected to
-#		>lp	Local port number the client connected to
-#		>qos    Client connection TOS/DSCP value set by Squid
-#		>nfmark Client connection netfilter mark set by Squid
-#
-#		la	Local listening IP address the client connection was connected to.
-#		lp	Local listening port number the client connection was connected to.
-#
-#		<a	Server IP address of the last server or peer connection
-#		<A	Server FQDN or peer name
-#		<p	Server port number of the last server or peer connection
-#		<la	Local IP address of the last server or peer connection
-#		<lp     Local port number of the last server or peer connection
-#		<qos	Server connection TOS/DSCP value set by Squid
-#		<nfmark Server connection netfilter mark set by Squid
-#
-#	Time related format codes:
-#
-#		ts	Seconds since epoch
-#		tu	subsecond time (milliseconds)
-#		tl	Local time. Optional strftime format argument
-#				default %d/%b/%Y:%H:%M:%S %z
-#		tg	GMT time. Optional strftime format argument
-#				default %d/%b/%Y:%H:%M:%S %z
-#		tr	Response time (milliseconds)
-#		dt	Total time spent making DNS lookups (milliseconds)
-#		tS	Approximate master transaction start time in 
-#			<full seconds since epoch>.<fractional seconds> format.
-#			Currently, Squid considers the master transaction
-#			started when a complete HTTP request header initiating
-#			the transaction is received from the client. This is
-#			the same value that Squid uses to calculate transaction
-#			response time when logging %tr to access.log. Currently,
-#			Squid uses millisecond resolution for %tS values,
-#			similar to the default access.log "current time" field
-#			(%ts.%03tu).
-#
-#	Access Control related format codes:
-#
-#		et	Tag returned by external acl
-#		ea	Log string returned by external acl
-#		un	User name (any available)
-#		ul	User name from authentication
-#		ue	User name from external acl helper
-#		ui	User name from ident
-#		un	A user name. Expands to the first available name
-#			from the following list of information sources:
-#			- authenticated user name, like %ul
-#			- user name supplied by an external ACL, like %ue
-#			- SSL client name, like %us
-#			- ident user name, like %ui
-#		credentials Client credentials. The exact meaning depends on
-#			the authentication scheme: For Basic authentication,
-#			it is the password; for Digest, the realm sent by the
-#			client; for NTLM and Negotiate, the client challenge
-#			or client credentials prefixed with "YR " or "KK ".
-#
-#	HTTP related format codes:
-#
-#	    REQUEST
-#
-#		[http::]rm	Request method (GET/POST etc)
-#		[http::]>rm	Request method from client
-#		[http::]<rm	Request method sent to server or peer
-#		[http::]ru	Request URL from client (historic, filtered for logging)
-#		[http::]>ru	Request URL from client
-#		[http::]<ru	Request URL sent to server or peer
-#		[http::]>rs	Request URL scheme from client
-#		[http::]<rs	Request URL scheme sent to server or peer
-#		[http::]>rd	Request URL domain from client
-#		[http::]<rd	Request URL domain sent to server or peer
-#		[http::]>rP	Request URL port from client
-#		[http::]<rP	Request URL port sent to server or peer
-#		[http::]rp	Request URL path excluding hostname
-#		[http::]>rp	Request URL path excluding hostname from client
-#		[http::]<rp	Request URL path excluding hostname sent to server or peer
-#		[http::]rv	Request protocol version
-#		[http::]>rv	Request protocol version from client
-#		[http::]<rv	Request protocol version sent to server or peer
-#
-#		[http::]>h	Original received request header.
-#				Usually differs from the request header sent by
-#				Squid, although most fields are often preserved.
-#				Accepts optional header field name/value filter
-#				argument using name[:[separator]element] format.
-#		[http::]>ha	Received request header after adaptation and
-#				redirection (pre-cache REQMOD vectoring point).
-#				Usually differs from the request header sent by
-#				Squid, although most fields are often preserved.
-#				Optional header name argument as for >h
-#
-#
-#	    RESPONSE
-#
-#		[http::]<Hs	HTTP status code received from the next hop
-#		[http::]>Hs	HTTP status code sent to the client
-#
-#		[http::]<h	Reply header. Optional header name argument
-#				as for >h
-#
-#		[http::]mt	MIME content type
-#
-#
-#	    SIZE COUNTERS
-#
-#		[http::]st	Total size of request + reply traffic with client
-#		[http::]>st	Total size of request received from client.
-#				Excluding chunked encoding bytes.
-#		[http::]<st	Total size of reply sent to client (after adaptation)
-#
-#		[http::]>sh	Size of request headers received from client
-#		[http::]<sh	Size of reply headers sent to client (after adaptation)
-#
-#		[http::]<sH	Reply high offset sent
-#		[http::]<sS	Upstream object size
-#
-#		[http::]<bs	Number of HTTP-equivalent message body bytes 
-#				received from the next hop, excluding chunked
-#				transfer encoding and control messages.
-#				Generated FTP/Gopher listings are treated as
-#				received bodies.
-#
-#
-#	    TIMING
-#
-#		[http::]<pt	Peer response time in milliseconds. The timer starts
-#				when the last request byte is sent to the next hop
-#				and stops when the last response byte is received.
-#		[http::]<tt	Total time in milliseconds. The timer 
-#				starts with the first connect request (or write I/O)
-#				sent to the first selected peer. The timer stops
-#				with the last I/O with the last peer.
-#
-#	Squid handling related format codes:
-#
-#		Ss	Squid request status (TCP_MISS etc)
-#		Sh	Squid hierarchy status (DEFAULT_PARENT etc)
-#
-#	SSL-related format codes:
-#
-#		ssl::bump_mode	SslBump decision for the transaction:
-#
-#				For CONNECT requests that initiated bumping of
-#				a connection and for any request received on
-#				an already bumped connection, Squid logs the
-#				corresponding SslBump mode ("server-first" or
-#				"client-first"). See the ssl_bump option for
-#				more information about these modes.
-#
-#				A "none" token is logged for requests that
-#				triggered "ssl_bump" ACL evaluation matching
-#				either a "none" rule or no rules at all.
-#
-#				In all other cases, a single dash ("-") is
-#				logged.
-#
-#		ssl::>sni	SSL client SNI sent to Squid. Available only
-#				after the peek, stare, or splice SSL bumping
-#				actions.
-#
-#	If ICAP is enabled, the following code becomes available (as
-#	well as ICAP log codes documented with the icap_log option):
-#
-#		icap::tt        Total ICAP processing time for the HTTP
-#				transaction. The timer ticks when ICAP
-#				ACLs are checked and when ICAP
-#				transaction is in progress.
-#
-#	If adaptation is enabled the following three codes become available:
-#
-#		adapt::<last_h	The header of the last ICAP response or
-#				meta-information from the last eCAP
-#				transaction related to the HTTP transaction.
-#				Like <h, accepts an optional header name
-#				argument.
-#
-#		adapt::sum_trs Summed adaptation transaction response
-#				times recorded as a comma-separated list in
-#				the order of transaction start time. Each time
-#				value is recorded as an integer number,
-#				representing response time of one or more
-#				adaptation (ICAP or eCAP) transaction in
-#				milliseconds.  When a failed transaction is
-#				being retried or repeated, its time is not
-#				logged individually but added to the
-#				replacement (next) transaction. See also:
-#				adapt::all_trs.
-#
-#		adapt::all_trs All adaptation transaction response times.
-#				Same as adaptation_strs but response times of
-#				individual transactions are never added
-#				together. Instead, all transaction response
-#				times are recorded individually.
-#
-#	You can prefix adapt::*_trs format codes with adaptation
-#	service name in curly braces to record response time(s) specific
-#	to that service. For example: %{my_service}adapt::sum_trs
-#
-#	If SSL is enabled, the following formating codes become available:
-#
-#		%ssl::>cert_subject The Subject field of the received client
-#				SSL certificate or a dash ('-') if Squid has
-#				received an invalid/malformed certificate or
-#				no certificate at all. Consider encoding the
-#				logged value because Subject often has spaces.
-#
-#		%ssl::>cert_issuer The Issuer field of the received client
-#				SSL certificate or a dash ('-') if Squid has
-#				received an invalid/malformed certificate or
-#				no certificate at all. Consider encoding the
-#				logged value because Issuer often has spaces.
-#
-#	The default formats available (which do not need re-defining) are:
-#
-#logformat squid      %ts.%03tu %6tr %>a %Ss/%03>Hs %<st %rm %ru %[un %Sh/%<a %mt
-#logformat common     %>a %[ui %[un [%tl] "%rm %ru HTTP/%rv" %>Hs %<st %Ss:%Sh
-#logformat combined   %>a %[ui %[un [%tl] "%rm %ru HTTP/%rv" %>Hs %<st "%{Referer}>h" "%{User-Agent}>h" %Ss:%Sh
-#logformat referrer   %ts.%03tu %>a %{Referer}>h %ru
-#logformat useragent  %>a [%tl] "%{User-Agent}>h"
-#
-#	NOTE: When the log_mime_hdrs directive is set to ON.
-#		The squid, common and combined formats have a safely encoded copy
-#		of the mime headers appended to each line within a pair of brackets.
-#
-#	NOTE: The common and combined formats are not quite true to the Apache definition.
-#		The logs from Squid contain an extra status and hierarchy code appended.
-#
-#Default:
-# The format definitions squid, common, combined, referrer, useragent are built in.
-
-#  TAG: access_log
-#	Configures whether and how Squid logs HTTP and ICP transactions.
-#	If access logging is enabled, a single line is logged for every 
-#	matching HTTP or ICP request. The recommended directive formats are:
-#
-#	access_log <module>:<place> [option ...] [acl acl ...]
-#	access_log none [acl acl ...]
-#
-#	The following directive format is accepted but may be deprecated:
-#	access_log <module>:<place> [<logformat name> [acl acl ...]]
-#
-#        In most cases, the first ACL name must not contain the '=' character
-#	and should not be equal to an existing logformat name. You can always
-#	start with an 'all' ACL to work around those restrictions.
-#	
-#	Will log to the specified module:place using the specified format (which
-#	must be defined in a logformat directive) those entries which match
-#	ALL the acl's specified (which must be defined in acl clauses).
-#	If no acl is specified, all requests will be logged to this destination.
-#	
-#	===== Available options for the recommended directive format =====
-#
-#	logformat=name		Names log line format (either built-in or
-#				defined by a logformat directive). Defaults
-#				to 'squid'.
-#
-#	buffer-size=64KB	Defines approximate buffering limit for log
-#				records (see buffered_logs).  Squid should not
-#				keep more than the specified size and, hence,
-#				should flush records before the buffer becomes
-#				full to avoid overflows under normal
-#				conditions (the exact flushing algorithm is
-#				module-dependent though).  The on-error option
-#				controls overflow handling.
-#
-#	on-error=die|drop	Defines action on unrecoverable errors. The
-#				'drop' action ignores (i.e., does not log)
-#				affected log records. The default 'die' action
-#				kills the affected worker. The drop action 
-#				support has not been tested for modules other
-#				than tcp.
-#
-#	===== Modules Currently available =====
-#	
-#	none	Do not log any requests matching these ACL.
-#		Do not specify Place or logformat name.
-#	
-#	stdio	Write each log line to disk immediately at the completion of
-#		each request.
-#		Place: the filename and path to be written.
-#	
-#	daemon	Very similar to stdio. But instead of writing to disk the log
-#		line is passed to a daemon helper for asychronous handling instead.
-#		Place: varies depending on the daemon.
-#		
-#		log_file_daemon Place: the file name and path to be written.
-#	
-#	syslog	To log each request via syslog facility.
-#		Place: The syslog facility and priority level for these entries.
-#		Place Format:  facility.priority
-#
-#		where facility could be any of:
-#			authpriv, daemon, local0 ... local7 or user.
-#
-#		And priority could be any of:
-#			err, warning, notice, info, debug.
-#	
-#	udp	To send each log line as text data to a UDP receiver.
-#		Place: The destination host name or IP and port.
-#		Place Format:   //host:port
-#
-#	tcp	To send each log line as text data to a TCP receiver.
-#		Lines may be accumulated before sending (see buffered_logs).
-#		Place: The destination host name or IP and port.
-#		Place Format:   //host:port
-#
-#	Default:
-#		access_log daemon:/var/log/squid/access.log squid
-#Default:
-# access_log daemon:/var/log/squid/access.log squid
-
-#  TAG: icap_log
-#	ICAP log files record ICAP transaction summaries, one line per
-#	transaction.
-#
-#	The icap_log option format is:
-#	icap_log <filepath> [<logformat name> [acl acl ...]]
-#	icap_log none [acl acl ...]]
-#	
-#	Please see access_log option documentation for details. The two
-#	kinds of logs share the overall configuration approach and many
-#	features.
-#
-#	ICAP processing of a single HTTP message or transaction may
-#	require multiple ICAP transactions.  In such cases, multiple
-#	ICAP transaction log lines will correspond to a single access
-#	log line.
-#
-#	ICAP log supports many access.log logformat %codes. In ICAP context,
-#	HTTP message-related %codes are applied to the HTTP message embedded
-#	in an ICAP message. Logformat "%http::>..." codes are used for HTTP
-#	messages embedded in ICAP requests while "%http::<..." codes are used
-#	for HTTP messages embedded in ICAP responses. For example:
-#
-#		http::>h	To-be-adapted HTTP message headers sent by Squid to
-#				the ICAP service. For REQMOD transactions, these are
-#				HTTP request headers. For RESPMOD, these are HTTP
-#				response headers, but Squid currently cannot log them
-#				(i.e., %http::>h will expand to "-" for RESPMOD).
-#
-#		http::<h	Adapted HTTP message headers sent by the ICAP
-#				service to Squid (i.e., HTTP request headers in regular
-#				REQMOD; HTTP response headers in RESPMOD and during
-#				request satisfaction in REQMOD).
-#
-#	ICAP OPTIONS transactions do not embed HTTP messages.
-#
-#	Several logformat codes below deal with ICAP message bodies. An ICAP
-#	message body, if any, typically includes a complete HTTP message
-#	(required HTTP headers plus optional HTTP message body). When
-#	computing HTTP message body size for these logformat codes, Squid
-#	either includes or excludes chunked encoding overheads; see
-#	code-specific documentation for details.
-#
-#	For Secure ICAP services, all size-related information is currently
-#	computed before/after TLS encryption/decryption, as if TLS was not
-#	in use at all.
-#
-#	The following format codes are also available for ICAP logs:
-#
-#		icap::<A	ICAP server IP address. Similar to <A.
-#
-#		icap::<service_name	ICAP service name from the icap_service
-#				option in Squid configuration file.
-#
-#		icap::ru	ICAP Request-URI. Similar to ru.
-#
-#		icap::rm	ICAP request method (REQMOD, RESPMOD, or 
-#				OPTIONS). Similar to existing rm.
-#
-#		icap::>st	The total size of the ICAP request sent to the ICAP
-#				server (ICAP headers + ICAP body), including chunking
-#				metadata (if any).
-#
-#		icap::<st	The total size of the ICAP response received from the
-#				ICAP server (ICAP headers + ICAP body), including
-#				chunking metadata (if any).
-#
-#		icap::<bs	The size of the ICAP response body received from the
-#				ICAP server, excluding chunking metadata (if any).
-#
-#		icap::tr 	Transaction response time (in
-#				milliseconds).  The timer starts when
-#				the ICAP transaction is created and
-#				stops when the transaction is completed.
-#				Similar to tr.
-#
-#		icap::tio	Transaction I/O time (in milliseconds). The
-#				timer starts when the first ICAP request
-#				byte is scheduled for sending. The timers
-#				stops when the last byte of the ICAP response
-#				is received.
-#
-#		icap::to 	Transaction outcome: ICAP_ERR* for all
-#				transaction errors, ICAP_OPT for OPTION
-#				transactions, ICAP_ECHO for 204
-#				responses, ICAP_MOD for message
-#				modification, and ICAP_SAT for request
-#				satisfaction. Similar to Ss.
-#
-#		icap::Hs	ICAP response status code. Similar to Hs.
-#
-#		icap::>h	ICAP request header(s). Similar to >h.
-#
-#		icap::<h	ICAP response header(s). Similar to <h.
-#
-#	The default ICAP log format, which can be used without an explicit
-#	definition, is called icap_squid:
-#
-#logformat icap_squid %ts.%03tu %6icap::tr %>A %icap::to/%03icap::Hs %icap::<st %icap::rm %icap::ru %un -/%icap::<A -
-#
-#	See also: logformat and %adapt::<last_h
-#Default:
-# none
-
-#  TAG: logfile_daemon
-#	Specify the path to the logfile-writing daemon. This daemon is
-#	used to write the access and store logs, if configured.
-#
-#	Squid sends a number of commands to the log daemon:
-#	  L<data>\n - logfile data
-#	  R\n - rotate file
-#	  T\n - truncate file
-#	  O\n - reopen file
-#	  F\n - flush file
-#	  r<n>\n - set rotate count to <n>
-#	  b<n>\n - 1 = buffer output, 0 = don't buffer output
-#
-#	No responses is expected.
-#Default:
-# logfile_daemon /usr/lib/squid/log_file_daemon
-
-#  TAG: stats_collection	allow|deny acl acl...
-#	This options allows you to control which requests gets accounted
-#	in performance counters.
-#
-#	This clause only supports fast acl types.
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#Default:
-# Allow logging for all transactions.
-
-#  TAG: cache_store_log
-#	Logs the activities of the storage manager.  Shows which
-#	objects are ejected from the cache, and which objects are
-#	saved and for how long.
-#	There are not really utilities to analyze this data, so you can safely
-#	disable it (the default).
-#	
-#	Store log uses modular logging outputs. See access_log for the list
-#	of modules supported.
-#	
-#	Example:
-#		cache_store_log stdio:/var/log/squid/store.log
-#		cache_store_log daemon:/var/log/squid/store.log
-#Default:
-# none
-
-#  TAG: cache_swap_state
-#	Location for the cache "swap.state" file. This index file holds
-#	the metadata of objects saved on disk.  It is used to rebuild
-#	the cache during startup.  Normally this file resides in each
-#	'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!
-#
-#	If %s can be used in the file name it will be replaced with a
-#	a representation of the cache_dir name where each / is replaced
-#	with '.'. This is needed to allow adding/removing cache_dir
-#	lines when cache_swap_log is being used.
-#
-#	If have more than one 'cache_dir', and %s is not used in the name
-#	these swap logs will have names such as:
-#
-#		cache_swap_log.00
-#		cache_swap_log.01
-#		cache_swap_log.02
-#
-#	The numbered extension (which is added automatically)
-#	corresponds to the order of the 'cache_dir' lines in this
-#	configuration file.  If you change the order of the 'cache_dir'
-#	lines in this file, these index files will NOT correspond to
-#	the correct 'cache_dir' entry (unless you manually rename
-#	them).  We recommend you do NOT use this option.  It is
-#	better to keep these index files in each 'cache_dir' directory.
-#Default:
-# Store the journal inside its cache_dir
-
-#  TAG: logfile_rotate
-#	Specifies the number of logfile rotations to make when you
-#	type 'squid -k rotate'. The default is 10, which will rotate
-#	with extensions 0 through 9. Setting logfile_rotate to 0 will
-#	disable the file name rotation, but the logfiles are still closed
-#	and re-opened. This will enable you to rename the logfiles
-#	yourself just before sending the rotate signal.
-#
-#	Note, the 'squid -k rotate' command normally sends a USR1
-#	signal to the running squid process.  In certain situations
-#	(e.g. on Linux with Async I/O), USR1 is used for other
-#	purposes, so -k rotate uses another signal.  It is best to get
-#	in the habit of using 'squid -k rotate' instead of 'kill -USR1
-#	<pid>'.
-#
-#	Note, from Squid-3.1 this option is only a default for cache.log,
-#	that log can be rotated separately by using debug_options.
-#
-#	Note2, for Debian/Linux the default of logfile_rotate is
-#	zero, since it includes external logfile-rotation methods.
-#Default:
-# logfile_rotate 0
-
-#  TAG: mime_table
-#	Path to Squid's icon configuration file.
-#
-#	You shouldn't need to change this, but the default file contains
-#	examples and formatting information if you do.
-#Default:
-# mime_table /usr/share/squid/mime.conf
-
-#  TAG: log_mime_hdrs	on|off
-#	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'.
-#Default:
-# log_mime_hdrs off
-
-#  TAG: pid_filename
-#	A filename to write the process-id to.  To disable, enter "none".
-#Default:
-# pid_filename /var/run/squid.pid
-
-#  TAG: client_netmask
-#	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'.
-#Default:
-# Log full client IP address
-
-#  TAG: strip_query_terms
-#	By default, Squid strips query terms from requested URLs before
-#	logging.  This protects your user's privacy and reduces log size.
-#
-#	When investigating HIT/MISS or other caching behaviour you
-#	will need to disable this to see the full URL used by Squid.
-#Default:
-# strip_query_terms on
-
-#  TAG: buffered_logs	on|off
-#	Whether to write/send access_log records ASAP or accumulate them and
-#	then write/send them in larger chunks. Buffering may improve
-#	performance because it decreases the number of I/Os. However,
-#	buffering increases the delay before log records become available to
-#	the final recipient (e.g., a disk file or logging daemon) and,
-#	hence, increases the risk of log records loss.
-#
-#	Note that even when buffered_logs are off, Squid may have to buffer
-#	records if it cannot write/send them immediately due to pending I/Os
-#	(e.g., the I/O writing the previous log record) or connectivity loss.
-#
-#	Currently honored by 'daemon' and 'tcp' access_log modules only.
-#Default:
-# buffered_logs off
-
-#  TAG: netdb_filename
-#	Where Squid stores it's netdb journal.
-#	When enabled this journal preserves netdb state between restarts.
-#
-#	To disable, enter "none".
-#Default:
-# netdb_filename stdio:/var/log/squid/netdb.state
-
-# OPTIONS FOR TROUBLESHOOTING
-# -----------------------------------------------------------------------------
-
-#  TAG: cache_log
-#	Squid administrative logging file.
-#
-#	This is where general information about Squid behavior goes. You can
-#	increase the amount of data logged to this file and how often it is
-#	rotated with "debug_options"
-#Default:
-# cache_log /var/log/squid/cache.log
-
-#  TAG: debug_options
-#	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.
-#	The default is to run with "ALL,1" to record important warnings.
-#
-#	The rotate=N option can be used to keep more or less of these logs
-#	than would otherwise be kept by logfile_rotate.
-#	For most uses a single log should be enough to monitor current
-#	events affecting Squid.
-#Default:
-# Log all critical and important messages.
-
-#  TAG: coredump_dir
-#	By default Squid leaves core files in the directory from where
-#	it was started. If you set 'coredump_dir' to a directory
-#	that exists, Squid will chdir() to that directory at startup
-#	and coredump files will be left there.
-#
-#Default:
-# Use the directory from where Squid was started.
-#
-
-# Leave coredumps in the first cache dir
-coredump_dir /var/spool/squid
-
-# OPTIONS FOR FTP GATEWAYING
-# -----------------------------------------------------------------------------
-
-#  TAG: ftp_user
-#	If you want the anonymous login password to be more informative
-#	(and enable the use of picky FTP servers), set this to something
-#	reasonable for your domain, like wwwuser@somewhere.net
-#
-#	The reason why this is domainless by default is 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 the email address is valid
-#	(for example perl.com).
-#Default:
-# ftp_user Squid@
-
-#  TAG: ftp_passive
-#	If your firewall does not allow Squid to use passive
-#	connections, turn off this option.
-#
-#	Use of ftp_epsv_all option requires this to be ON.
-#Default:
-# ftp_passive on
-
-#  TAG: ftp_epsv_all
-#	FTP Protocol extensions permit the use of a special "EPSV ALL" command.
-#
-#	NATs may be able to put the connection on a "fast path" through the
-#	translator, as the EPRT command will never be used and therefore,
-#	translation of the data portion of the segments will never be needed.
-#
-#	When a client only expects to do two-way FTP transfers this may be
-#	useful.
-#	If squid finds that it must do a three-way FTP transfer after issuing
-#	an EPSV ALL command, the FTP session will fail.
-#
-#	If you have any doubts about this option do not use it.
-#	Squid will nicely attempt all other connection methods.
-#
-#	Requires ftp_passive to be ON (default) for any effect.
-#Default:
-# ftp_epsv_all off
-
-#  TAG: ftp_epsv
-#	FTP Protocol extensions permit the use of a special "EPSV" command.
-#
-#	NATs may be able to put the connection on a "fast path" through the
-#	translator using EPSV, as the EPRT command will never be used
-#	and therefore, translation of the data portion of the segments 
-#	will never be needed.
-#
-#	EPSV is often required to interoperate with FTP servers on IPv6
-#	networks. On the other hand, it may break some IPv4 servers.
-#
-#	By default, EPSV may try EPSV with any FTP server. To fine tune
-#	that decision, you may restrict EPSV to certain clients or servers
-#	using ACLs:
-#
-#		ftp_epsv allow|deny al1 acl2 ...
-#
-#	WARNING: Disabling EPSV may cause problems with external NAT and IPv6.
-#
-#	Only fast ACLs are supported.
-#	Requires ftp_passive to be ON (default) for any effect.
-#Default:
-# none
-
-#  TAG: ftp_eprt
-#	FTP Protocol extensions permit the use of a special "EPRT" command.
-#
-#	This extension provides a protocol neutral alternative to the
-#	IPv4-only PORT command. When supported it enables active FTP data
-#	channels over IPv6 and efficient NAT handling.
-#
-#	Turning this OFF will prevent EPRT being attempted and will skip
-#	straight to using PORT for IPv4 servers.
-#
-#	Some devices are known to not handle this extension correctly and
-#	may result in crashes. Devices which suport EPRT enough to fail
-#	cleanly will result in Squid attempting PORT anyway. This directive
-#	should only be disabled when EPRT results in device failures.
-#
-#	WARNING: Doing so will convert Squid back to the old behavior with all
-#	the related problems with external NAT devices/layers and IPv4-only FTP.
-#Default:
-# ftp_eprt on
-
-#  TAG: ftp_sanitycheck
-#	For security and data integrity reasons Squid by default performs
-#	sanity checks of the addresses of FTP data connections ensure the
-#	data connection is to the requested server. If you need to allow
-#	FTP connections to servers using another IP address for the data
-#	connection turn this off.
-#Default:
-# ftp_sanitycheck on
-
-#  TAG: ftp_telnet_protocol
-#	The FTP protocol is officially defined to use the telnet protocol
-#	as transport channel for the control connection. However, many
-#	implementations are broken and does not respect this aspect of
-#	the FTP protocol.
-#
-#	If you have trouble accessing files with ASCII code 255 in the
-#	path or similar problems involving this ASCII code you can
-#	try setting this directive to off. If that helps, report to the
-#	operator of the FTP server in question that their FTP server
-#	is broken and does not follow the FTP standard.
-#Default:
-# ftp_telnet_protocol on
-
-# OPTIONS FOR EXTERNAL SUPPORT PROGRAMS
-# -----------------------------------------------------------------------------
-
-#  TAG: diskd_program
-#	Specify the location of the diskd executable.
-#	Note this is only useful if you have compiled in
-#	diskd as one of the store io modules.
-#Default:
-# diskd_program /usr/lib/squid/diskd
-
-#  TAG: unlinkd_program
-#	Specify the location of the executable for file deletion process.
-#Default:
-# unlinkd_program /usr/lib/squid/unlinkd
-
-#  TAG: pinger_program
-#	Specify the location of the executable for the pinger process.
-#Default:
-# pinger_program /usr/lib/squid/pinger
-
-#  TAG: pinger_enable
-#	Control whether the pinger is active at run-time.
-#	Enables turning ICMP pinger on and off with a simple
-#	squid -k reconfigure.
-#Default:
-# pinger_enable on
-
-# OPTIONS FOR URL REWRITING
-# -----------------------------------------------------------------------------
-
-#  TAG: url_rewrite_program
-#	Specify the location of the executable URL rewriter to use.
-#	Since they can perform almost any function there isn't one included.
-#
-#	For each requested URL, the rewriter will receive on line with the format
-#
-#	  [channel-ID <SP>] URL [<SP> extras]<NL>
-#
-#	See url_rewrite_extras on how to send "extras" with optional values to
-#	the helper.
-#	After processing the request the helper must reply using the following format:
-#
-#	  [channel-ID <SP>] result [<SP> kv-pairs]
-#
-#	The result code can be:
-#
-#	  OK status=30N url="..."
-#		Redirect the URL to the one supplied in 'url='.
-#		'status=' is optional and contains the status code to send
-#		the client in Squids HTTP response. It must be one of the
-#		HTTP redirect status codes: 301, 302, 303, 307, 308.
-#		When no status is given Squid will use 302.
-#
-#	  OK rewrite-url="..."
-#		Rewrite the URL to the one supplied in 'rewrite-url='.
-#		The new URL is fetched directly by Squid and returned to
-#		the client as the response to its request.
-#
-#	  OK
-#		When neither of url= and rewrite-url= are sent Squid does
-#		not change the URL.
-#
-#	  ERR
-#		Do not change the URL.
-#
-#	  BH
-#		An internal error occurred in the helper, preventing
-#		a result being identified. The 'message=' key name is
-#		reserved for delivering a log message.
-#
-#
-#	In addition to the above kv-pairs Squid also understands the following
-#	optional kv-pairs received from URL rewriters:
-#	  clt_conn_tag=TAG
-#		Associates a TAG with the client TCP connection.
-#		The TAG is treated as a regular annotation but persists across
-#		future requests on the client connection rather than just the
-#		current request. A helper may update the TAG during subsequent
-#		requests be returning a new kv-pair.
-#
-#	When using the concurrency= option the protocol is changed by
-#	introducing a query channel tag in front of the request/response.
-#	The query channel tag is a number between 0 and concurrency-1.
-#	This value must be echoed back unchanged to Squid as the first part
-#	of the response relating to its request.
-#
-#	WARNING: URL re-writing ability should be avoided whenever possible.
-#		 Use the URL redirect form of response instead.
-#
-#	Re-write creates a difference in the state held by the client
-#	and server. Possibly causing confusion when the server response
-#	contains snippets of its view state. Embeded URLs, response
-#	and content Location headers, etc. are not re-written by this
-#	interface.
-#
-#	By default, a URL rewriter is not used.
-#Default:
-# none
-
-#  TAG: url_rewrite_children
-#	The maximum number of redirector processes to spawn. If you limit
-#	it too few Squid will have to wait for them to process a backlog of
-#	URLs, slowing it down. If you allow too many they will use RAM
-#	and other system resources noticably.
-#	
-#	The startup= and idle= options allow some measure of skew in your
-#	tuning.
-#	
-#		startup=
-#	
-#	Sets a minimum of how many processes are to be spawned when Squid
-#	starts or reconfigures. When set to zero the first request will
-#	cause spawning of the first child process to handle it.
-#	
-#	Starting too few will cause an initial slowdown in traffic as Squid
-#	attempts to simultaneously spawn enough processes to cope.
-#	
-#		idle=
-#	
-#	Sets a minimum of how many processes Squid is to try and keep available
-#	at all times. When traffic begins to rise above what the existing
-#	processes can handle this many more will be spawned up to the maximum
-#	configured. A minimum setting of 1 is required.
-#
-#		concurrency=
-#
-#	The number of requests each redirector helper can handle in
-#	parallel. Defaults to 0 which indicates the redirector
-#	is a old-style single threaded redirector.
-#
-#	When this directive is set to a value >= 1 then the protocol
-#	used to communicate with the helper is modified to include
-#	an ID in front of the request/response. The ID from the request
-#	must be echoed back with the response to that request.
-#Default:
-# url_rewrite_children 20 startup=0 idle=1 concurrency=0
-
-#  TAG: url_rewrite_host_header
-#	To preserve same-origin security policies in browsers and
-#	prevent Host: header forgery by redirectors Squid rewrites
-#	any Host: header in redirected requests.
-#	
-#	If you are running an accelerator this may not be a wanted
-#	effect of a redirector. This directive enables you disable
-#	Host: alteration in reverse-proxy traffic.
-#	
-#	WARNING: Entries are cached on the result of the URL rewriting
-#	process, so be careful if you have domain-virtual hosts.
-#	
-#	WARNING: Squid and other software verifies the URL and Host
-#	are matching, so be careful not to relay through other proxies
-#	or inspecting firewalls with this disabled.
-#Default:
-# url_rewrite_host_header on
-
-#  TAG: url_rewrite_access
-#	If defined, this access list specifies which requests are
-#	sent to the redirector processes.
-#
-#	This clause supports both fast and slow acl types.
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#Default:
-# Allow, unless rules exist in squid.conf.
-
-#  TAG: url_rewrite_bypass
-#	When this is 'on', a request will not go through the
-#	redirector if all the helpers are busy.  If this is 'off'
-#	and the redirector queue grows too large, Squid will exit
-#	with a FATAL error and ask you to increase the number of
-#	redirectors.  You should only enable this if the redirectors
-#	are not critical to your caching system.  If you use
-#	redirectors for access control, and you enable this option,
-#	users may have access to pages they should not
-#	be allowed to request.
-#Default:
-# url_rewrite_bypass off
-
-#  TAG: url_rewrite_extras
-#	Specifies a string to be append to request line format for the
-#	rewriter helper. "Quoted" format values may contain spaces and
-#	logformat %macros. In theory, any logformat %macro can be used.
-#	In practice, a %macro expands as a dash (-) if the helper request is
-#	sent before the required macro information is available to Squid.
-#Default:
-# url_rewrite_extras "%>a/%>A %un %>rm myip=%la myport=%lp"
-
-# OPTIONS FOR STORE ID
-# -----------------------------------------------------------------------------
-
-#  TAG: store_id_program
-#	Specify the location of the executable StoreID helper to use.
-#	Since they can perform almost any function there isn't one included.
-#
-#	For each requested URL, the helper will receive one line with the format
-#
-#	  [channel-ID <SP>] URL [<SP> extras]<NL>
-#
-#
-#	After processing the request the helper must reply using the following format:
-#
-#	  [channel-ID <SP>] result [<SP> kv-pairs]
-#
-#	The result code can be:
-#
-#	  OK store-id="..."
-#		Use the StoreID supplied in 'store-id='.
-#
-#	  ERR
-#		The default is to use HTTP request URL as the store ID.
-#
-#	  BH
-#		An internal error occured in the helper, preventing
-#		a result being identified.
-#
-#	In addition to the above kv-pairs Squid also understands the following
-#	optional kv-pairs received from URL rewriters:
-#	  clt_conn_tag=TAG
-#		Associates a TAG with the client TCP connection.
-#		Please see url_rewrite_program related documentation for this
-#		kv-pair
-#
-#	Helper programs should be prepared to receive and possibly ignore
-#	additional whitespace-separated tokens on each input line.
-#
-#	When using the concurrency= option the protocol is changed by
-#	introducing a query channel tag in front of the request/response.
-#	The query channel tag is a number between 0 and concurrency-1.
-#	This value must be echoed back unchanged to Squid as the first part
-#	of the response relating to its request.
-#
-#	NOTE: when using StoreID refresh_pattern will apply to the StoreID
-#	      returned from the helper and not the URL.
-#
-#	WARNING: Wrong StoreID value returned by a careless helper may result
-#	         in the wrong cached response returned to the user.
-#
-#	By default, a StoreID helper is not used.
-#Default:
-# none
-
-#  TAG: store_id_extras
-#        Specifies a string to be append to request line format for the
-#        StoreId helper. "Quoted" format values may contain spaces and
-#        logformat %macros. In theory, any logformat %macro can be used.
-#        In practice, a %macro expands as a dash (-) if the helper request is
-#        sent before the required macro information is available to Squid.
-#Default:
-# store_id_extras "%>a/%>A %un %>rm myip=%la myport=%lp"
-
-#  TAG: store_id_children
-#	The maximum number of StoreID helper processes to spawn. If you limit
-#	it too few Squid will have to wait for them to process a backlog of
-#	requests, slowing it down. If you allow too many they will use RAM
-#	and other system resources noticably.
-#	
-#	The startup= and idle= options allow some measure of skew in your
-#	tuning.
-#	
-#		startup=
-#	
-#	Sets a minimum of how many processes are to be spawned when Squid
-#	starts or reconfigures. When set to zero the first request will
-#	cause spawning of the first child process to handle it.
-#	
-#	Starting too few will cause an initial slowdown in traffic as Squid
-#	attempts to simultaneously spawn enough processes to cope.
-#	
-#		idle=
-#	
-#	Sets a minimum of how many processes Squid is to try and keep available
-#	at all times. When traffic begins to rise above what the existing
-#	processes can handle this many more will be spawned up to the maximum
-#	configured. A minimum setting of 1 is required.
-#
-#		concurrency=
-#
-#	The number of requests each storeID helper can handle in
-#	parallel. Defaults to 0 which indicates the helper
-#	is a old-style single threaded program.
-#
-#	When this directive is set to a value >= 1 then the protocol
-#	used to communicate with the helper is modified to include
-#	an ID in front of the request/response. The ID from the request
-#	must be echoed back with the response to that request.
-#Default:
-# store_id_children 20 startup=0 idle=1 concurrency=0
-
-#  TAG: store_id_access
-#	If defined, this access list specifies which requests are
-#	sent to the StoreID processes.  By default all requests
-#	are sent.
-#
-#	This clause supports both fast and slow acl types.
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#Default:
-# Allow, unless rules exist in squid.conf.
-
-#  TAG: store_id_bypass
-#	When this is 'on', a request will not go through the
-#	helper if all helpers are busy.  If this is 'off'
-#	and the helper queue grows too large, Squid will exit
-#	with a FATAL error and ask you to increase the number of
-#	helpers.  You should only enable this if the helperss
-#	are not critical to your caching system.  If you use
-#	helpers for critical caching components, and you enable this 
-#	option,	users may not get objects from cache.
-#Default:
-# store_id_bypass on
-
-# OPTIONS FOR TUNING THE CACHE
-# -----------------------------------------------------------------------------
-
-#  TAG: cache
-#	Requests denied by this directive will not be served from the cache
-#	and their responses will not be stored in the cache. This directive
-#	has no effect on other transactions and on already cached responses.
-#
-#	This clause supports both fast and slow acl types.
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#
-#	This and the two other similar caching directives listed below are
-#	checked at different transaction processing stages, have different
-#	access to response information, affect different cache operations,
-#	and differ in slow ACLs support:
-#
-#	* cache: Checked before Squid makes a hit/miss determination.
-#		No access to reply information!
-#		Denies both serving a hit and storing a miss.
-#		Supports both fast and slow ACLs.
-#	* send_hit: Checked after a hit was detected.
-#		Has access to reply (hit) information.
-#		Denies serving a hit only.
-#		Supports fast ACLs only.
-#	* store_miss: Checked before storing a cachable miss.
-#		Has access to reply (miss) information.
-#		Denies storing a miss only.
-#		Supports fast ACLs only.
-#
-#	If you are not sure which of the three directives to use, apply the
-#	following decision logic:
-#
-#	* If your ACL(s) are of slow type _and_ need response info, redesign.
-#	  Squid does not support that particular combination at this time.
-#        Otherwise:
-#	* If your directive ACL(s) are of slow type, use "cache"; and/or
-#	* if your directive ACL(s) need no response info, use "cache".
-#        Otherwise:
-#	* If you do not want the response cached, use store_miss; and/or
-#	* if you do not want a hit on a cached response, use send_hit.
-#Default:
-# By default, this directive is unused and has no effect.
-
-#  TAG: send_hit
-#	Responses denied by this directive will not be served from the cache
-#	(but may still be cached, see store_miss). This directive has no
-#	effect on the responses it allows and on the cached objects.
-#
-#	Please see the "cache" directive for a summary of differences among
-#	store_miss, send_hit, and cache directives.
-#
-#	Unlike the "cache" directive, send_hit only supports fast acl
-#	types.  See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#
-#	For example:
-#
-#		# apply custom Store ID mapping to some URLs
-#		acl MapMe dstdomain .c.example.com
-#		store_id_program ...
-#		store_id_access allow MapMe
-#
-#		# but prevent caching of special responses
-#		# such as 302 redirects that cause StoreID loops
-#		acl Ordinary http_status 200-299
-#		store_miss deny MapMe !Ordinary
-#
-#		# and do not serve any previously stored special responses
-#		# from the cache (in case they were already cached before
-#		# the above store_miss rule was in effect).
-#		send_hit deny MapMe !Ordinary
-#Default:
-# By default, this directive is unused and has no effect.
-
-#  TAG: store_miss
-#	Responses denied by this directive will not be cached (but may still
-#	be served from the cache, see send_hit). This directive has no
-#	effect on the responses it allows and on the already cached responses.
-#
-#	Please see the "cache" directive for a summary of differences among
-#	store_miss, send_hit, and cache directives. See the
-#	send_hit directive for a usage example.
-#
-#	Unlike the "cache" directive, store_miss only supports fast acl
-#	types.  See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#Default:
-# By default, this directive is unused and has no effect.
-
-#  TAG: max_stale	time-units
-#	This option puts an upper limit on how stale content Squid
-#	will serve from the cache if cache validation fails.
-#	Can be overriden by the refresh_pattern max-stale option.
-#Default:
-# max_stale 1 week
-
-#  TAG: refresh_pattern
-#	usage: refresh_pattern [-i] regex min percent max [options]
-#
-#	By default, regular expressions are CASE-SENSITIVE.  To make
-#	them case-insensitive, use the -i option.
-#
-#	'Min' is the time (in minutes) an object without an explicit
-#	expiry time should be considered fresh. The recommended
-#	value is 0, any higher values may cause dynamic applications
-#	to be erroneously cached unless the application designer
-#	has taken the appropriate actions.
-#
-#	'Percent' is a percentage of the objects age (time since last
-#	modification age) an object without explicit expiry time
-#	will be considered fresh.
-#
-#	'Max' is an upper limit on how long objects without an explicit
-#	expiry time will be considered fresh.
-#
-#	options: override-expire
-#		 override-lastmod
-#		 reload-into-ims
-#		 ignore-reload
-#		 ignore-no-store
-#		 ignore-must-revalidate
-#		 ignore-private
-#		 ignore-auth
-#		 max-stale=NN
-#		 refresh-ims
-#		 store-stale
-#
-#		override-expire enforces min age even if the server
-#		sent an explicit expiry time (e.g., with the
-#		Expires: header or Cache-Control: max-age). Doing this
-#		VIOLATES the HTTP standard.  Enabling this feature
-#		could make you liable for problems which it causes.
-#
-#		Note: override-expire does not enforce staleness - it only extends
-#		freshness / min. If the server returns a Expires time which
-#		is longer than your max time, Squid will still consider
-#		the object fresh for that period of time.
-#
-#		override-lastmod enforces min age even on objects
-#		that were modified recently.
-#
-#		reload-into-ims changes a client no-cache or ``reload''
-#		request for a cached entry into a conditional request using
-#		If-Modified-Since and/or If-None-Match headers, provided the
-#		cached entry has a Last-Modified and/or a strong ETag header.
-#		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.
-#
-#		ignore-no-store ignores any ``Cache-control: no-store''
-#		headers received from a server. Doing this VIOLATES
-#		the HTTP standard. Enabling this feature could make you
-#		liable for problems which it causes.
-#
-#		ignore-must-revalidate ignores any ``Cache-Control: must-revalidate``
-#		headers received from a server. Doing this VIOLATES
-#		the HTTP standard. Enabling this feature could make you
-#		liable for problems which it causes.
-#
-#		ignore-private ignores any ``Cache-control: private''
-#		headers received from a server. Doing this VIOLATES
-#		the HTTP standard. Enabling this feature could make you
-#		liable for problems which it causes.
-#
-#		ignore-auth caches responses to requests with authorization,
-#		as if the originserver had sent ``Cache-control: public''
-#		in the response header. Doing this VIOLATES the HTTP standard.
-#		Enabling this feature could make you liable for problems which
-#		it causes.
-#
-#		refresh-ims causes squid to contact the origin server
-#		when a client issues an If-Modified-Since request. This
-#		ensures that the client will receive an updated version
-#		if one is available.
-#
-#		store-stale stores responses even if they don't have explicit 
-#		freshness or a validator (i.e., Last-Modified or an ETag) 
-#		present, or if they're already stale. By default, Squid will 
-#		not cache such responses because they usually can't be
-#		reused. Note that such responses will be stale by default.
-#
-#		max-stale=NN provide a maximum staleness factor. Squid won't
-#		serve objects more stale than this even if it failed to
-#		validate the object. Default: use the max_stale global limit.
-#
-#	Basically a cached object is:
-#
-#		FRESH if expire > now, else STALE
-#		STALE if age > max
-#		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 the default will be used.
-#
-#	Note, you must uncomment all the default lines if you want
-#	to change one. The default setting is only active if none is
-#	used.
-#
-#
-
-#
-# Add any of your own refresh_pattern entries above these.
-#
-refresh_pattern ^ftp:		1440	20%	10080
-refresh_pattern ^gopher:	1440	0%	1440
-refresh_pattern -i (/cgi-bin/|\?) 0	0%	0
-refresh_pattern /(|In)Release(|\.gpg)$	0	0%	0
-refresh_pattern /(Packages|Sources)(|\.gz|\.bz2|\.xz)$	0	0%	0
-refresh_pattern \.deb$   129600 100% 129600
-refresh_pattern \.udeb$   129600 100% 129600
-refresh_pattern \.tar\.(gz|bz2|xz|lzma)$  129600 100% 129600
-refresh_pattern .		0	20%	4320
-
-#  TAG: quick_abort_min	(KB)
-#Default:
-# quick_abort_min 16 KB
-
-#  TAG: quick_abort_max	(KB)
-#Default:
-# quick_abort_max 16 KB
-
-#  TAG: quick_abort_pct	(percent)
-#	The cache by default continues downloading aborted requests
-#	which are almost completed (less than 16 KB remaining). 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 transferred until
-#	then.
-#
-#	If the transfer has less than 'quick_abort_min' KB remaining,
-#	it will finish the retrieval.
-#
-#	If the transfer has more than 'quick_abort_max' KB remaining,
-#	it will abort the retrieval.
-#
-#	If more than 'quick_abort_pct' of the transfer has completed,
-#	it will finish the retrieval.
-#
-#	If you do not want any retrieval to continue after the client
-#	has aborted, set both 'quick_abort_min' and 'quick_abort_max'
-#	to '0 KB'.
-#
-#	If you want retrievals to always continue if they are being
-#	cached set 'quick_abort_min' to '-1 KB'.
-#Default:
-# quick_abort_pct 95
-
-#  TAG: read_ahead_gap	buffer-size
-#	The amount of data the cache will buffer ahead of what has been
-#	sent to the client when retrieving an object from another server.
-#Default:
-# read_ahead_gap 16 KB
-
-#  TAG: negative_ttl	time-units
-#	Set the Default Time-to-Live (TTL) for failed requests.
-#	Certain types of failures (such as "connection refused" and
-#	"404 Not Found") are able to be negatively-cached for a short time.
-#	Modern web servers should provide Expires: header, however if they
-#	do not this can provide a minimum TTL.
-#	The default is not to cache errors with unknown expiry details.
-#
-#	Note that this is different from negative caching of DNS lookups.
-#
-#	WARNING: Doing this VIOLATES the HTTP standard.  Enabling
-#	this feature could make you liable for problems which it
-#	causes.
-#Default:
-# negative_ttl 0 seconds
-
-#  TAG: positive_dns_ttl	time-units
-#	Upper limit on how long Squid will cache positive DNS responses.
-#	Default is 6 hours (360 minutes). This directive must be set
-#	larger than negative_dns_ttl.
-#Default:
-# positive_dns_ttl 6 hours
-
-#  TAG: negative_dns_ttl	time-units
-#	Time-to-Live (TTL) for negative caching of failed DNS lookups.
-#	This also sets the lower cache limit on positive lookups.
-#	Minimum value is 1 second, and it is not recommendable to go
-#	much below 10 seconds.
-#Default:
-# negative_dns_ttl 1 minutes
-
-#  TAG: range_offset_limit	size [acl acl...]
-#	usage: (size) [units] [[!]aclname]
-#	
-#	Sets an upper limit on how far (number of bytes) into the file 
-#	a Range request	may be to cause Squid to prefetch the whole file. 
-#	If beyond this limit, Squid forwards the Range request as it is and 
-#	the result is NOT cached.
-#	
-#	This is to stop a far ahead range request (lets say start at 17MB)
-#	from making Squid fetch the whole object up to that point before
-#	sending anything to the client.
-#	
-#	Multiple range_offset_limit lines may be specified, and they will 
-#	be searched from top to bottom on each request until a match is found. 
-#	The first match found will be used.  If no line matches a request, the 
-#	default limit of 0 bytes will be used.
-#	
-#	'size' is the limit specified as a number of units.
-#	
-#	'units' specifies whether to use bytes, KB, MB, etc.
-#	If no units are specified bytes are assumed.
-#	
-#	A size of 0 causes Squid to never fetch more than the
-#	client requested. (default)
-#	
-#	A size of 'none' causes Squid to always fetch the object from the
-#	beginning so it may cache the result. (2.0 style)
-#	
-#	'aclname' is the name of a defined ACL.
-#	
-#	NP: Using 'none' as the byte value here will override any quick_abort settings 
-#	    that may otherwise apply to the range request. The range request will
-#	    be fully fetched from start to finish regardless of the client
-#	    actions. This affects bandwidth usage.
-#Default:
-# none
-
-#  TAG: minimum_expiry_time	(seconds)
-#	The minimum caching time according to (Expires - Date)
-#	headers Squid honors if the object can't be revalidated.
-#	The default is 60 seconds.
-#
-#	In reverse proxy environments it might be desirable to honor
-#	shorter object lifetimes. It is most likely better to make
-#	your server return a meaningful Last-Modified header however.
-#
-#	In ESI environments where page fragments often have short
-#	lifetimes, this will often be best set to 0.
-#Default:
-# minimum_expiry_time 60 seconds
-
-#  TAG: store_avg_object_size	(bytes)
-#	Average object size, used to estimate number of objects your
-#	cache can hold.  The default is 13 KB.
-#
-#	This is used to pre-seed the cache index memory allocation to
-#	reduce expensive reallocate operations while handling clients
-#	traffic. Too-large values may result in memory allocation during
-#	peak traffic, too-small values will result in wasted memory.
-#
-#	Check the cache manager 'info' report metrics for the real
-#	object sizes seen by your Squid before tuning this.
-#Default:
-# store_avg_object_size 13 KB
-
-#  TAG: store_objects_per_bucket
-#	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.
-#Default:
-# store_objects_per_bucket 20
-
-# HTTP OPTIONS
-# -----------------------------------------------------------------------------
-
-#  TAG: request_header_max_size	(KB)
-#	This specifies the maximum size for HTTP headers in a request.
-#	Request headers are usually relatively small (about 512 bytes).
-#	Placing a limit on the request header size will catch certain
-#	bugs (for example with persistent connections) and possibly
-#	buffer-overflow or denial-of-service attacks.
-#Default:
-# request_header_max_size 64 KB
-
-#  TAG: reply_header_max_size	(KB)
-#	This specifies the maximum size for HTTP headers in a reply.
-#	Reply headers are usually relatively small (about 512 bytes).
-#	Placing a limit on the reply header size will catch certain
-#	bugs (for example with persistent connections) and possibly
-#	buffer-overflow or denial-of-service attacks.
-#Default:
-# reply_header_max_size 64 KB
-
-#  TAG: request_body_max_size	(bytes)
-#	This specifies the maximum size for an HTTP request body.
-#	In other words, the maximum size of a PUT/POST request.
-#	A user who attempts to send a request with a body larger
-#	than this limit receives an "Invalid Request" error message.
-#	If you set this parameter to a zero (the default), there will
-#	be no limit imposed.
-#
-#	See also client_request_buffer_max_size for an alternative
-#	limitation on client uploads which can be configured.
-#Default:
-# No limit.
-
-#  TAG: client_request_buffer_max_size	(bytes)
-#	This specifies the maximum buffer size of a client request.
-#	It prevents squid eating too much memory when somebody uploads
-#	a large file.
-#Default:
-# client_request_buffer_max_size 512 KB
-
-#  TAG: broken_posts
-#	A list of ACL elements which, if matched, causes Squid to send
-#	an extra CRLF pair after the body of a PUT/POST request.
-#
-#	Some HTTP servers has broken implementations of PUT/POST,
-#	and rely on an extra CRLF pair sent by some WWW clients.
-#
-#	Quote from RFC2616 section 4.1 on this matter:
-#
-#	  Note: certain buggy HTTP/1.0 client implementations generate an
-#	  extra CRLF's after a POST request. To restate what is explicitly
-#	  forbidden by the BNF, an HTTP/1.1 client must not preface or follow
-#	  a request with an extra CRLF.
-#
-#	This clause only supports fast acl types.
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#
-#Example:
-# acl buggy_server url_regex ^http://....
-# broken_posts allow buggy_server
-#Default:
-# Obey RFC 2616.
-
-#  TAG: adaptation_uses_indirect_client	on|off
-#	Controls whether the indirect client IP address (instead of the direct
-#	client IP address) is passed to adaptation services.
-#
-#	See also: follow_x_forwarded_for adaptation_send_client_ip
-#Default:
-# adaptation_uses_indirect_client on
-
-#  TAG: via	on|off
-#	If set (default), Squid will include a Via header in requests and
-#	replies as required by RFC2616.
-#Default:
-# via on
-
-#  TAG: ie_refresh	on|off
-#	Microsoft Internet Explorer up until version 5.5 Service
-#	Pack 1 has an issue with transparent proxies, wherein it
-#	is impossible to force a refresh.  Turning this on provides
-#	a partial fix to the problem, by causing all IMS-REFRESH
-#	requests from older IE versions to check the origin server
-#	for fresh content.  This reduces hit ratio by some amount
-#	(~10% in my experience), but allows users to actually get
-#	fresh content when they want it.  Note because Squid
-#	cannot tell if the user is using 5.5 or 5.5SP1, the behavior
-#	of 5.5 is unchanged from old versions of Squid (i.e. a
-#	forced refresh is impossible).  Newer versions of IE will,
-#	hopefully, continue to have the new behavior and will be
-#	handled based on that assumption.  This option defaults to
-#	the old Squid behavior, which is better for hit ratios but
-#	worse for clients using IE, if they need to be able to
-#	force fresh content.
-#Default:
-# ie_refresh off
-
-#  TAG: vary_ignore_expire	on|off
-#	Many HTTP servers supporting Vary gives such objects
-#	immediate expiry time with no cache-control header
-#	when requested by a HTTP/1.0 client. This option
-#	enables Squid to ignore such expiry times until
-#	HTTP/1.1 is fully implemented.
-#
-#	WARNING: If turned on this may eventually cause some
-#	varying objects not intended for caching to get cached.
-#Default:
-# vary_ignore_expire off
-
-#  TAG: request_entities
-#	Squid defaults to deny GET and HEAD requests with request entities,
-#	as the meaning of such requests are undefined in the HTTP standard
-#	even if not explicitly forbidden.
-#
-#	Set this directive to on if you have clients which insists
-#	on sending request entities in GET or HEAD requests. But be warned
-#	that there is server software (both proxies and web servers) which
-#	can fail to properly process this kind of request which may make you
-#	vulnerable to cache pollution attacks if enabled.
-#Default:
-# request_entities off
-
-#  TAG: request_header_access
-#	Usage: request_header_access header_name allow|deny [!]aclname ...
-#
-#	WARNING: Doing this VIOLATES the HTTP standard.  Enabling
-#	this feature could make you liable for problems which it
-#	causes.
-#
-#	This option replaces the old 'anonymize_headers' and the
-#	older 'http_anonymizer' option with something that is much
-#	more configurable. A list of ACLs for each header name allows
-#	removal of specific header fields under specific conditions.
-#
-#	This option only applies to outgoing HTTP request headers (i.e.,
-#	headers sent by Squid to the next HTTP hop such as a cache peer
-#	or an origin server). The option has no effect during cache hit
-#	detection. The equivalent adaptation vectoring point in ICAP
-#	terminology is post-cache REQMOD.
-#
-#	The option is applied to individual outgoing request header
-#	fields. For each request header field F, Squid uses the first
-#	qualifying sets of request_header_access rules:
-#
-#	    1. Rules with header_name equal to F's name.
-#	    2. Rules with header_name 'Other', provided F's name is not
-#	       on the hard-coded list of commonly used HTTP header names.
-#	    3. Rules with header_name 'All'.
-#
-#	Within that qualifying rule set, rule ACLs are checked as usual.
-#	If ACLs of an "allow" rule match, the header field is allowed to
-#	go through as is. If ACLs of a "deny" rule match, the header is
-#	removed and request_header_replace is then checked to identify
-#	if the removed header has a replacement. If no rules within the
-#	set have matching ACLs, the header field is left as is.
-#
-#	For example, to achieve the same behavior as the old
-#	'http_anonymizer standard' option, you should use:
-#
-#		request_header_access From deny all
-#		request_header_access Referer deny all
-#		request_header_access User-Agent deny all
-#
-#	Or, to reproduce the old 'http_anonymizer paranoid' feature
-#	you should use:
-#
-#		request_header_access Authorization allow all
-#		request_header_access Proxy-Authorization allow all
-#		request_header_access Cache-Control allow all
-#		request_header_access Content-Length allow all
-#		request_header_access Content-Type allow all
-#		request_header_access Date allow all
-#		request_header_access Host allow all
-#		request_header_access If-Modified-Since allow all
-#		request_header_access Pragma allow all
-#		request_header_access Accept allow all
-#		request_header_access Accept-Charset allow all
-#		request_header_access Accept-Encoding allow all
-#		request_header_access Accept-Language allow all
-#		request_header_access Connection allow all
-#		request_header_access All deny all
-#
-#	HTTP reply headers are controlled with the reply_header_access directive.
-#
-#	By default, all headers are allowed (no anonymizing is performed).
-#Default:
-# No limits.
-
-#  TAG: reply_header_access
-#	Usage: reply_header_access header_name allow|deny [!]aclname ...
-#
-#	WARNING: Doing this VIOLATES the HTTP standard.  Enabling
-#	this feature could make you liable for problems which it
-#	causes.
-#
-#	This option only applies to reply headers, i.e., from the
-#	server to the client.
-#
-#	This is the same as request_header_access, but in the other
-#	direction. Please see request_header_access for detailed
-#	documentation.
-#
-#	For example, to achieve the same behavior as the old
-#	'http_anonymizer standard' option, you should use:
-#
-#		reply_header_access Server deny all
-#		reply_header_access WWW-Authenticate deny all
-#		reply_header_access Link deny all
-#
-#	Or, to reproduce the old 'http_anonymizer paranoid' feature
-#	you should use:
-#
-#		reply_header_access Allow allow all
-#		reply_header_access WWW-Authenticate allow all
-#		reply_header_access Proxy-Authenticate allow all
-#		reply_header_access Cache-Control allow all
-#		reply_header_access Content-Encoding allow all
-#		reply_header_access Content-Length allow all
-#		reply_header_access Content-Type allow all
-#		reply_header_access Date allow all
-#		reply_header_access Expires allow all
-#		reply_header_access Last-Modified allow all
-#		reply_header_access Location allow all
-#		reply_header_access Pragma allow all
-#		reply_header_access Content-Language allow all
-#		reply_header_access Retry-After allow all
-#		reply_header_access Title allow all
-#		reply_header_access Content-Disposition allow all
-#		reply_header_access Connection allow all
-#		reply_header_access All deny all
-#
-#	HTTP request headers are controlled with the request_header_access directive.
-#
-#	By default, all headers are allowed (no anonymizing is
-#	performed).
-#Default:
-# No limits.
-
-#  TAG: request_header_replace
-#	Usage:   request_header_replace header_name message
-#	Example: request_header_replace User-Agent Nutscrape/1.0 (CP/M; 8-bit)
-#
-#	This option allows you to change the contents of headers
-#	denied with request_header_access above, by replacing them
-#	with some fixed string.
-#
-#	This only applies to request headers, not reply headers.
-#
-#	By default, headers are removed if denied.
-#Default:
-# none
-
-#  TAG: reply_header_replace
-#        Usage:   reply_header_replace header_name message
-#        Example: reply_header_replace Server Foo/1.0
-#
-#        This option allows you to change the contents of headers
-#        denied with reply_header_access above, by replacing them
-#        with some fixed string.
-#
-#        This only applies to reply headers, not request headers.
-#
-#        By default, headers are removed if denied.
-#Default:
-# none
-
-#  TAG: request_header_add
-#	Usage:   request_header_add field-name field-value acl1 [acl2] ...
-#	Example: request_header_add X-Client-CA "CA=%ssl::>cert_issuer" all
-#
-#	This option adds header fields to outgoing HTTP requests (i.e.,
-#	request headers sent by Squid to the next HTTP hop such as a
-#	cache peer or an origin server). The option has no effect during
-#	cache hit detection. The equivalent adaptation vectoring point
-#	in ICAP terminology is post-cache REQMOD.
-#
-#	Field-name is a token specifying an HTTP header name. If a
-#	standard HTTP header name is used, Squid does not check whether
-#	the new header conflicts with any existing headers or violates
-#	HTTP rules. If the request to be modified already contains a
-#	field with the same name, the old field is preserved but the
-#	header field values are not merged.
-#
-#	Field-value is either a token or a quoted string. If quoted
-#	string format is used, then the surrounding quotes are removed
-#	while escape sequences and %macros are processed.
-#
-#	In theory, all of the logformat codes can be used as %macros.
-#	However, unlike logging (which happens at the very end of
-#	transaction lifetime), the transaction may not yet have enough
-#	information to expand a macro when the new header value is needed.
-#	And some information may already be available to Squid but not yet
-#	committed where the macro expansion code can access it (report
-#	such instances!). The macro will be expanded into a single dash
-#	('-') in such cases. Not all macros have been tested.
-#
-#	One or more Squid ACLs may be specified to restrict header
-#	injection to matching requests. As always in squid.conf, all
-#	ACLs in an option ACL list must be satisfied for the insertion
-#	to happen. The request_header_add option supports fast ACLs
-#	only.
-#Default:
-# none
-
-#  TAG: note
-#	This option used to log custom information about the master
-#	transaction. For example, an admin may configure Squid to log
-#	which "user group" the transaction belongs to, where "user group"
-#	will be determined based on a set of ACLs and not [just]
-#	authentication information.
-#	Values of key/value pairs can be logged using %{key}note macros:
-#
-#	    note key value acl ...
-#	    logformat myFormat ... %{key}note ...
-#Default:
-# none
-
-#  TAG: relaxed_header_parser	on|off|warn
-#	In the default "on" setting Squid accepts certain forms
-#	of non-compliant HTTP messages where it is unambiguous
-#	what the sending application intended even if the message
-#	is not correctly formatted. The messages is then normalized
-#	to the correct form when forwarded by Squid.
-#
-#	If set to "warn" then a warning will be emitted in cache.log
-#	each time such HTTP error is encountered.
-#
-#	If set to "off" then such HTTP errors will cause the request
-#	or response to be rejected.
-#Default:
-# relaxed_header_parser on
-
-#  TAG: collapsed_forwarding	(on|off)
-#       When enabled, instead of forwarding each concurrent request for
-#       the same URL, Squid just sends the first of them. The other, so
-#       called "collapsed" requests, wait for the response to the first
-#       request and, if it happens to be cachable, use that response.
-#       Here, "concurrent requests" means "received after the first
-#       request headers were parsed and before the corresponding response
-#       headers were parsed".
-#
-#       This feature is disabled by default: enabling collapsed
-#       forwarding needlessly delays forwarding requests that look
-#       cachable (when they are collapsed) but then need to be forwarded
-#       individually anyway because they end up being for uncachable
-#       content. However, in some cases, such as acceleration of highly
-#       cachable content with periodic or grouped expiration times, the
-#       gains from collapsing [large volumes of simultaneous refresh
-#       requests] outweigh losses from such delays.
-#
-#       Squid collapses two kinds of requests: regular client requests
-#       received on one of the listening ports and internal "cache
-#       revalidation" requests which are triggered by those regular
-#       requests hitting a stale cached object. Revalidation collapsing
-#       is currently disabled for Squid instances containing SMP-aware
-#       disk or memory caches and for Vary-controlled cached objects.
-#Default:
-# collapsed_forwarding off
-
-# TIMEOUTS
-# -----------------------------------------------------------------------------
-
-#  TAG: forward_timeout	time-units
-#	This parameter specifies how long Squid should at most attempt in
-#	finding a forwarding path for the request before giving up.
-#Default:
-# forward_timeout 4 minutes
-
-#  TAG: connect_timeout	time-units
-#	This parameter specifies how long to wait for the TCP connect to
-#	the requested server or peer to complete before Squid should
-#	attempt to find another path where to forward the request.
-#Default:
-# connect_timeout 1 minute
-
-#  TAG: peer_connect_timeout	time-units
-#	This parameter specifies how long to wait for a pending TCP
-#	connection to a peer cache.  The default is 30 seconds.   You
-#	may also set different timeout values for individual neighbors
-#	with the 'connect-timeout' option on a 'cache_peer' line.
-#Default:
-# peer_connect_timeout 30 seconds
-
-#  TAG: read_timeout	time-units
-#	Applied on peer server 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.
-#Default:
-# read_timeout 15 minutes
-
-#  TAG: write_timeout	time-units
-#	This timeout is tracked for all connections that have data
-#	available for writing and are waiting for the socket to become
-#	ready. After each successful write, the timeout is extended by
-#	the configured amount. If Squid has data to write but the
-#	connection is not ready for the configured duration, the
-#	transaction associated with the connection is terminated. The
-#	default is 15 minutes.
-#Default:
-# write_timeout 15 minutes
-
-#  TAG: request_timeout
-#	How long to wait for complete HTTP request headers after initial
-#	connection establishment.
-#Default:
-# request_timeout 5 minutes
-
-#  TAG: client_idle_pconn_timeout
-#	How long to wait for the next HTTP request on a persistent
-#	client connection after the previous request completes.
-#Default:
-# client_idle_pconn_timeout 2 minutes
-
-#  TAG: ftp_client_idle_timeout
-#	How long to wait for an FTP request on a connection to Squid ftp_port.
-#	Many FTP clients do not deal with idle connection closures well,
-#	necessitating a longer default timeout than client_idle_pconn_timeout
-#	used for incoming HTTP requests.
-#Default:
-# ftp_client_idle_timeout 30 minutes
-
-#  TAG: client_lifetime	time-units
-#	The maximum amount of time a client (browser) is allowed to
-#	remain connected to the cache process.  This protects the Cache
-#	from having a lot 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, persistent_request_timeout and quick_abort values.
-#Default:
-# client_lifetime 1 day
-
-#  TAG: half_closed_clients
-#	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, Squid will immediately close client connections when
-#	read(2) returns "no more data to read."
-#
-#	Change this option to 'on' and Squid will keep open connections
-#	until a read(2) or write(2) on the socket returns an error.
-#	This may show some benefits for reverse proxies. But if not
-#	it is recommended to leave OFF.
-#Default:
-# half_closed_clients off
-
-#  TAG: server_idle_pconn_timeout
-#	Timeout for idle persistent connections to servers and other
-#	proxies.
-#Default:
-# server_idle_pconn_timeout 1 minute
-
-#  TAG: ident_timeout
-#	Maximum time to wait for IDENT lookups to complete.
-#
-#	If this is too high, and you enabled IDENT lookups from untrusted
-#	users, you might be susceptible to denial-of-service by having
-#	many ident requests going at once.
-#Default:
-# ident_timeout 10 seconds
-
-#  TAG: shutdown_lifetime	time-units
-#	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.
-#Default:
-# shutdown_lifetime 30 seconds
-
-# ADMINISTRATIVE PARAMETERS
-# -----------------------------------------------------------------------------
-
-#  TAG: cache_mgr
-#	Email-address of local cache manager who will receive
-#	mail if the cache dies.  The default is "webmaster".
-#Default:
-# cache_mgr webmaster
-
-#  TAG: mail_from
-#	From: email-address for mail sent when the cache dies.
-#	The default is to use 'squid@unique_hostname'.
-#
-#	See also: unique_hostname directive.
-#Default:
-# none
-
-#  TAG: mail_program
-#	Email program used to send mail if the cache dies.
-#	The default is "mail". The specified program must comply
-#	with the standard Unix mail syntax:
-#	  mail-program recipient < mailfile
-#
-#	Optional command line options can be specified.
-#Default:
-# mail_program mail
-
-#  TAG: cache_effective_user
-#	If you start Squid as root, it will change its effective/real
-#	UID/GID to the user specified below.  The default is to change
-#	to UID of proxy.
-#	see also; cache_effective_group
-#Default:
-# cache_effective_user proxy
-
-#  TAG: cache_effective_group
-#	Squid sets the GID to the effective user's default group ID
-#	(taken from the password file) and supplementary group list
-#	from the groups membership.
-#
-#	If you want Squid to run with a specific GID regardless of
-#	the group memberships of the effective user then set this
-#	to the group (or GID) you want Squid to run as. When set
-#	all other group privileges of the effective user are ignored
-#	and only this GID is effective. If Squid is not started as
-#	root the user starting Squid MUST be member of the specified
-#	group.
-#
-#	This option is not recommended by the Squid Team.
-#	Our preference is for administrators to configure a secure
-#	user account for squid with UID/GID matching system policies.
-#Default:
-# Use system group memberships of the cache_effective_user account
-
-#  TAG: httpd_suppress_version_string	on|off
-#	Suppress Squid version string info in HTTP headers and HTML error pages.
-#Default:
-# httpd_suppress_version_string off
-
-#  TAG: visible_hostname
-#	If you want to present a special hostname in error messages, etc,
-#	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.
-#Default:
-# Automatically detect the system host name
-
-#  TAG: unique_hostname
-#	If you want to have multiple machines with the same
-#	'visible_hostname' you must give each machine a different
-#	'unique_hostname' so forwarding loops can be detected.
-#Default:
-# Copy the value from visible_hostname
-
-#  TAG: hostname_aliases
-#	A list of other DNS names your cache has.
-#Default:
-# none
-
-#  TAG: umask
-#	Minimum umask which should be enforced while the proxy
-#	is running, in addition to the umask set at startup.
-#
-#	For a traditional octal representation of umasks, start
-#        your value with 0.
-#Default:
-# umask 027
-
-# 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 announcement 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://www.ircache.net/Cache/Tracker/.
-
-#  TAG: announce_period
-#	This is how frequently to send cache announcements.
-#
-#	To enable announcing your cache, just set an announce period.
-#
-#	Example:
-#		announce_period 1 day
-#Default:
-# Announcement messages disabled.
-
-#  TAG: announce_host
-#	Set the hostname where announce registration messages will be sent.
-#
-#	See also announce_port and announce_file
-#Default:
-# announce_host tracker.ircache.net
-
-#  TAG: announce_file
-#	The contents of this file will be included in the announce
-#	registration messages.
-#Default:
-# none
-
-#  TAG: announce_port
-#	Set the port where announce registration messages will be sent.
-#
-#	See also announce_host and announce_file
-#Default:
-# announce_port 3131
-
-# HTTPD-ACCELERATOR OPTIONS
-# -----------------------------------------------------------------------------
-
-#  TAG: httpd_accel_surrogate_id
-#	Surrogates (http://www.esi.org/architecture_spec_1.0.html)
-#	need an identification token to allow control targeting. Because
-#	a farm of surrogates may all perform the same tasks, they may share
-#	an identification token.
-#Default:
-# visible_hostname is used if no specific ID is set.
-
-#  TAG: http_accel_surrogate_remote	on|off
-#	Remote surrogates (such as those in a CDN) honour the header
-#	"Surrogate-Control: no-store-remote".
-#
-#	Set this to on to have squid behave as a remote surrogate.
-#Default:
-# http_accel_surrogate_remote off
-
-#  TAG: esi_parser	libxml2|expat|custom
-#	ESI markup is not strictly XML compatible. The custom ESI parser
-#	will give higher performance, but cannot handle non ASCII character
-#	encodings.
-#Default:
-# esi_parser custom
-
-# DELAY POOL PARAMETERS
-# -----------------------------------------------------------------------------
-
-#  TAG: delay_pools
-#	This represents the number of delay pools to be used.  For example,
-#	if you have one class 2 delay pool and one class 3 delays pool, you
-#	have a total of 2 delay pools.
-#
-#	See also delay_parameters, delay_class, delay_access for pool
-#	configuration details.
-#Default:
-# delay_pools 0
-
-#  TAG: delay_class
-#	This defines the class of each delay pool.  There must be exactly one
-#	delay_class line for each delay pool.  For example, to define two
-#	delay pools, one of class 2 and one of class 3, the settings above
-#	and here would be:
-#
-#	Example:
-#	    delay_pools 4      # 4 delay pools
-#	    delay_class 1 2    # pool 1 is a class 2 pool
-#	    delay_class 2 3    # pool 2 is a class 3 pool
-#	    delay_class 3 4    # pool 3 is a class 4 pool
-#	    delay_class 4 5    # pool 4 is a class 5 pool
-#
-#	The delay pool classes are:
-#
-#		class 1		Everything is limited by a single aggregate
-#				bucket.
-#
-#		class 2 	Everything is limited by a single aggregate
-#				bucket as well as an "individual" bucket chosen
-#				from bits 25 through 32 of the IPv4 address.
-#
-#		class 3		Everything is limited by a single aggregate
-#				bucket as well as a "network" bucket chosen
-#				from bits 17 through 24 of the IP address and a
-#				"individual" bucket chosen from bits 17 through
-#				32 of the IPv4 address.
-#
-#		class 4		Everything in a class 3 delay pool, with an
-#				additional limit on a per user basis. This
-#				only takes effect if the username is established
-#				in advance - by forcing authentication in your
-#				http_access rules.
-#
-#		class 5		Requests are grouped according their tag (see
-#				external_acl's tag= reply).
-#
-#
-#	Each pool also requires a delay_parameters directive to configure the pool size
-#	and speed limits used whenever the pool is applied to a request. Along with
-#	a set of delay_access directives to determine when it is used.
-#
-#	NOTE: If an IP address is a.b.c.d
-#		-> bits 25 through 32 are "d"
-#		-> bits 17 through 24 are "c"
-#		-> bits 17 through 32 are "c * 256 + d"
-#
-#	NOTE-2: Due to the use of bitmasks in class 2,3,4 pools they only apply to
-#		IPv4 traffic. Class 1 and 5 pools may be used with IPv6 traffic.
-#
-#	This clause only supports fast acl types.
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#
-#	See also delay_parameters and delay_access.
-#Default:
-# none
-
-#  TAG: delay_access
-#	This is used to determine which delay pool a request falls into.
-#
-#	delay_access is sorted per pool and the matching starts with pool 1,
-#	then pool 2, ..., and finally pool N. The first delay pool where the
-#	request is allowed is selected for the request. If it does not allow
-#	the request to any pool then the request is not delayed (default).
-#
-#	For example, if you want some_big_clients in delay
-#	pool 1 and lotsa_little_clients in delay pool 2:
-#
-#		delay_access 1 allow some_big_clients
-#		delay_access 1 deny all
-#		delay_access 2 allow lotsa_little_clients
-#		delay_access 2 deny all
-#		delay_access 3 allow authenticated_clients
-#
-#	See also delay_parameters and delay_class.
-#
-#Default:
-# Deny using the pool, unless allow rules exist in squid.conf for the pool.
-
-#  TAG: delay_parameters
-#	This defines the parameters for a delay pool.  Each delay pool has
-#	a number of "buckets" associated with it, as explained in the
-#	description of delay_class.
-#
-#	For a class 1 delay pool, the syntax is:
-#		delay_class pool 1
-#		delay_parameters pool aggregate
-#
-#	For a class 2 delay pool:
-#		delay_class pool 2
-#		delay_parameters pool aggregate individual
-#
-#	For a class 3 delay pool:
-#		delay_class pool 3
-#		delay_parameters pool aggregate network individual
-#
-#	For a class 4 delay pool:
-#		delay_class pool 4
-#		delay_parameters pool aggregate network individual user
-#
-#	For a class 5 delay pool:
-#		delay_class pool 5
-#		delay_parameters pool tagrate
-#
-#	The option variables are:
-#
-#		pool		a pool number - ie, a number between 1 and the
-#				number specified in delay_pools as used in
-#				delay_class lines.
-#
-#		aggregate	the speed limit parameters for the aggregate bucket
-#				(class 1, 2, 3).
-#
-#		individual	the speed limit parameters for the individual
-#				buckets (class 2, 3).
-#
-#		network		the speed limit parameters for the network buckets
-#				(class 3).
-#
-#		user		the speed limit parameters for the user buckets
-#				(class 4).
-#
-#		tagrate		the speed limit parameters for the tag buckets
-#				(class 5).
-#
-#	A pair of delay parameters is written restore/maximum, where restore is
-#	the number of bytes (not bits - modem and network speeds are usually
-#	quoted in bits) per second placed into the bucket, and maximum is the
-#	maximum number of bytes which can be in the bucket at any time.
-#
-#	There must be one delay_parameters line for each delay pool.
-#
-#
-#	For example, if delay pool number 1 is a class 2 delay pool as in the
-#	above example, and is being used to strictly limit each host to 64Kbit/sec
-#	(plus overheads), with no overall limit, the line is:
-#
-#		delay_parameters 1 none 8000/8000
-#
-#	Note that 8 x 8K Byte/sec -> 64K bit/sec.
-#
-#	Note that the word 'none' is used to represent no limit.
-#
-#
-#	And, if delay pool number 2 is a class 3 delay pool as in the above
-#	example, and you want to limit it to a total of 256Kbit/sec (strict limit)
-#	with each 8-bit network permitted 64Kbit/sec (strict limit) and each
-#	individual host permitted 4800bit/sec with a bucket maximum size of 64Kbits
-#	to permit a decent web page to be downloaded at a decent speed
-#	(if the network is not being limited due to overuse) but slow down
-#	large downloads more significantly:
-#
-#		delay_parameters 2 32000/32000 8000/8000 600/8000
-#
-#	Note that 8 x  32K Byte/sec ->  256K bit/sec.
-#		  8 x   8K Byte/sec ->   64K bit/sec.
-#		  8 x 600  Byte/sec -> 4800  bit/sec.
-#
-#
-#	Finally, for a class 4 delay pool as in the example - each user will
-#	be limited to 128Kbits/sec no matter how many workstations they are logged into.:
-#
-#		delay_parameters 4 32000/32000 8000/8000 600/64000 16000/16000
-#
-#
-#	See also delay_class and delay_access.
-#
-#Default:
-# none
-
-#  TAG: delay_initial_bucket_level	(percent, 0-100)
-#	The initial bucket percentage is used to determine how much is put
-#	in each bucket when squid starts, is reconfigured, or first notices
-#	a host accessing it (in class 2 and class 3, individual hosts and
-#	networks only have buckets associated with them once they have been
-#	"seen" by squid).
-#Default:
-# delay_initial_bucket_level 50
-
-# CLIENT DELAY POOL PARAMETERS
-# -----------------------------------------------------------------------------
-
-#  TAG: client_delay_pools
-#	This option specifies the number of client delay pools used. It must
-#	preceed other client_delay_* options.
-#
-#	Example:
-#		client_delay_pools 2
-#
-#	See also client_delay_parameters and client_delay_access.
-#Default:
-# client_delay_pools 0
-
-#  TAG: client_delay_initial_bucket_level	(percent, 0-no_limit)
-#	This option determines the initial bucket size as a percentage of
-#	max_bucket_size from client_delay_parameters. Buckets are created
-#	at the time of the "first" connection from the matching IP. Idle
-#	buckets are periodically deleted up.
-#
-#	You can specify more than 100 percent but note that such "oversized"
-#	buckets are not refilled until their size goes down to max_bucket_size
-#	from client_delay_parameters.
-#
-#	Example:
-#		client_delay_initial_bucket_level 50
-#Default:
-# client_delay_initial_bucket_level 50
-
-#  TAG: client_delay_parameters
-#
-#	This option configures client-side bandwidth limits using the
-#	following format:
-#
-#	    client_delay_parameters pool speed_limit max_bucket_size
-#
-#	pool is an integer ID used for client_delay_access matching.
-#
-#	speed_limit is bytes added to the bucket per second.
-#
-#	max_bucket_size is the maximum size of a bucket, enforced after any
-#	speed_limit additions.
-#
-#	Please see the delay_parameters option for more information and
-#	examples.
-#
-#	Example:
-#		client_delay_parameters 1 1024 2048
-#		client_delay_parameters 2 51200 16384
-#
-#	See also client_delay_access.
-#
-#Default:
-# none
-
-#  TAG: client_delay_access
-#	This option determines the client-side delay pool for the
-#	request:
-#
-#	    client_delay_access pool_ID allow|deny acl_name
-#
-#	All client_delay_access options are checked in their pool ID
-#	order, starting with pool 1. The first checked pool with allowed
-#	request is selected for the request. If no ACL matches or there
-#	are no client_delay_access options, the request bandwidth is not
-#	limited.
-#
-#	The ACL-selected pool is then used to find the
-#	client_delay_parameters for the request. Client-side pools are
-#	not used to aggregate clients. Clients are always aggregated
-#	based on their source IP addresses (one bucket per source IP).
-#
-#	This clause only supports fast acl types.
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#	Additionally, only the client TCP connection details are available.
-#	ACLs testing HTTP properties will not work.
-#
-#	Please see delay_access for more examples.
-#
-#	Example:
-#		client_delay_access 1 allow low_rate_network
-#		client_delay_access 2 allow vips_network
-#
-#
-#	See also client_delay_parameters and client_delay_pools.
-#Default:
-# Deny use of the pool, unless allow rules exist in squid.conf for the pool.
-
-# WCCPv1 AND WCCPv2 CONFIGURATION OPTIONS
-# -----------------------------------------------------------------------------
-
-#  TAG: wccp_router
-#	Use this option to define your WCCP ``home'' router for
-#	Squid.
-#
-#	wccp_router supports a single WCCP(v1) router
-#
-#	wccp2_router supports multiple WCCPv2 routers
-#
-#	only one of the two may be used at the same time and defines
-#	which version of WCCP to use.
-#Default:
-# WCCP disabled.
-
-#  TAG: wccp2_router
-#	Use this option to define your WCCP ``home'' router for
-#	Squid.
-#
-#	wccp_router supports a single WCCP(v1) router
-#
-#	wccp2_router supports multiple WCCPv2 routers
-#
-#	only one of the two may be used at the same time and defines
-#	which version of WCCP to use.
-#Default:
-# WCCPv2 disabled.
-
-#  TAG: wccp_version
-#	This directive is only relevant if you need to set up WCCP(v1)
-#	to some very old and end-of-life Cisco routers. In all other
-#	setups it must be left unset or at the default setting.
-#	It defines an internal version in the WCCP(v1) protocol,
-#	with version 4 being the officially documented protocol.
-#
-#	According to some users, Cisco IOS 11.2 and earlier only
-#	support WCCP version 3.  If you're using that or an earlier
-#	version of IOS, you may need to change this value to 3, otherwise
-#	do not specify this parameter.
-#Default:
-# wccp_version 4
-
-#  TAG: wccp2_rebuild_wait
-#	If this is enabled Squid will wait for the cache dir rebuild to finish
-#	before sending the first wccp2 HereIAm packet
-#Default:
-# wccp2_rebuild_wait on
-
-#  TAG: wccp2_forwarding_method
-#	WCCP2 allows the setting of forwarding methods between the
-#	router/switch and the cache.  Valid values are as follows:
-#
-#	gre - GRE encapsulation (forward the packet in a GRE/WCCP tunnel)
-#	l2  - L2 redirect (forward the packet using Layer 2/MAC rewriting)
-#
-#	Currently (as of IOS 12.4) cisco routers only support GRE.
-#	Cisco switches only support the L2 redirect assignment method.
-#Default:
-# wccp2_forwarding_method gre
-
-#  TAG: wccp2_return_method
-#	WCCP2 allows the setting of return methods between the
-#	router/switch and the cache for packets that the cache
-#	decides not to handle.  Valid values are as follows:
-#
-#	gre - GRE encapsulation (forward the packet in a GRE/WCCP tunnel)
-#	l2  - L2 redirect (forward the packet using Layer 2/MAC rewriting)
-#
-#	Currently (as of IOS 12.4) cisco routers only support GRE.
-#	Cisco switches only support the L2 redirect assignment.
-#
-#	If the "ip wccp redirect exclude in" command has been
-#	enabled on the cache interface, then it is still safe for
-#	the proxy server to use a l2 redirect method even if this
-#	option is set to GRE.
-#Default:
-# wccp2_return_method gre
-
-#  TAG: wccp2_assignment_method
-#	WCCP2 allows the setting of methods to assign the WCCP hash
-#	Valid values are as follows:
-#
-#	hash - Hash assignment
-#	mask - Mask assignment
-#
-#	As a general rule, cisco routers support the hash assignment method
-#	and cisco switches support the mask assignment method.
-#Default:
-# wccp2_assignment_method hash
-
-#  TAG: wccp2_service
-#	WCCP2 allows for multiple traffic services. There are two
-#	types: "standard" and "dynamic". The standard type defines
-#	one service id - http (id 0). The dynamic service ids can be from
-#	51 to 255 inclusive.  In order to use a dynamic service id
-#	one must define the type of traffic to be redirected; this is done
-#	using the wccp2_service_info option.
-#
-#	The "standard" type does not require a wccp2_service_info option,
-#	just specifying the service id will suffice.
-#
-#	MD5 service authentication can be enabled by adding
-#	"password=<password>" to the end of this service declaration.
-#
-#	Examples:
-#
-#	wccp2_service standard 0	# for the 'web-cache' standard service
-#	wccp2_service dynamic 80	# a dynamic service type which will be
-#					# fleshed out with subsequent options.
-#	wccp2_service standard 0 password=foo
-#Default:
-# Use the 'web-cache' standard service.
-
-#  TAG: wccp2_service_info
-#	Dynamic WCCPv2 services require further information to define the
-#	traffic you wish to have diverted.
-#
-#	The format is:
-#
-#	wccp2_service_info <id> protocol=<protocol> flags=<flag>,<flag>..
-#	    priority=<priority> ports=<port>,<port>..
-#
-#	The relevant WCCPv2 flags:
-#	+ src_ip_hash, dst_ip_hash
-#	+ source_port_hash, dst_port_hash
-#	+ src_ip_alt_hash, dst_ip_alt_hash
-#	+ src_port_alt_hash, dst_port_alt_hash
-#	+ ports_source
-#
-#	The port list can be one to eight entries.
-#
-#	Example:
-#
-#	wccp2_service_info 80 protocol=tcp flags=src_ip_hash,ports_source
-#	    priority=240 ports=80
-#
-#	Note: the service id must have been defined by a previous
-#	'wccp2_service dynamic <id>' entry.
-#Default:
-# none
-
-#  TAG: wccp2_weight
-#	Each cache server gets assigned a set of the destination
-#	hash proportional to their weight.
-#Default:
-# wccp2_weight 10000
-
-#  TAG: wccp_address
-#	Use this option if you require WCCPv2 to use a specific
-#	interface address.
-#
-#	The default behavior is to not bind to any specific address.
-#Default:
-# Address selected by the operating system.
-
-#  TAG: wccp2_address
-#	Use this option if you require WCCP to use a specific
-#	interface address.
-#
-#	The default behavior is to not bind to any specific address.
-#Default:
-# Address selected by the operating system.
-
-# PERSISTENT CONNECTION HANDLING
-# -----------------------------------------------------------------------------
-#
-# Also see "pconn_timeout" in the TIMEOUTS section
-
-#  TAG: client_persistent_connections
-#	Persistent connection support for clients.
-#	Squid uses persistent connections (when allowed). You can use
-#	this option to disable persistent connections with clients.
-#Default:
-# client_persistent_connections on
-
-#  TAG: server_persistent_connections
-#	Persistent connection support for servers.
-#	Squid uses persistent connections (when allowed). You can use
-#	this option to disable persistent connections with servers.
-#Default:
-# server_persistent_connections on
-
-#  TAG: persistent_connection_after_error
-#	With this directive the use of persistent connections after
-#	HTTP errors can be disabled. Useful if you have clients
-#	who fail to handle errors on persistent connections proper.
-#Default:
-# persistent_connection_after_error on
-
-#  TAG: detect_broken_pconn
-#	Some servers have been found to incorrectly signal the use
-#	of HTTP/1.0 persistent connections even on replies not
-#	compatible, causing significant delays. This server problem
-#	has mostly been seen on redirects.
-#
-#	By enabling this directive Squid attempts to detect such
-#	broken replies and automatically assume the reply is finished
-#	after 10 seconds timeout.
-#Default:
-# detect_broken_pconn off
-
-# CACHE DIGEST OPTIONS
-# -----------------------------------------------------------------------------
-
-#  TAG: digest_generation
-#	This controls whether the server will generate a Cache Digest
-#	of its contents.  By default, Cache Digest generation is
-#	enabled if Squid is compiled with --enable-cache-digests defined.
-#Default:
-# digest_generation on
-
-#  TAG: digest_bits_per_entry
-#	This is the number of bits of the server's Cache Digest which
-#	will be associated with the Digest entry for a given HTTP
-#	Method and URL (public key) combination.  The default is 5.
-#Default:
-# digest_bits_per_entry 5
-
-#  TAG: digest_rebuild_period	(seconds)
-#	This is the wait time between Cache Digest rebuilds.
-#Default:
-# digest_rebuild_period 1 hour
-
-#  TAG: digest_rewrite_period	(seconds)
-#	This is the wait time between Cache Digest writes to
-#	disk.
-#Default:
-# digest_rewrite_period 1 hour
-
-#  TAG: digest_swapout_chunk_size	(bytes)
-#	This is the number of bytes of the Cache Digest to write to
-#	disk at a time.  It defaults to 4096 bytes (4KB), the Squid
-#	default swap page.
-#Default:
-# digest_swapout_chunk_size 4096 bytes
-
-#  TAG: digest_rebuild_chunk_percentage	(percent, 0-100)
-#	This is the percentage of the Cache Digest to be scanned at a
-#	time.  By default it is set to 10% of the Cache Digest.
-#Default:
-# digest_rebuild_chunk_percentage 10
-
-# SNMP OPTIONS
-# -----------------------------------------------------------------------------
-
-#  TAG: snmp_port
-#	The port number where Squid listens for SNMP requests. To enable
-#	SNMP support set this to a suitable port number. Port number
-#	3401 is often used for the Squid SNMP agent. By default it's
-#	set to "0" (disabled)
-#
-#	Example:
-#		snmp_port 3401
-#Default:
-# SNMP disabled.
-
-#  TAG: snmp_access
-#	Allowing or denying access to the SNMP port.
-#
-#	All access to the agent is denied by default.
-#	usage:
-#
-#	snmp_access allow|deny [!]aclname ...
-#
-#	This clause only supports fast acl types.
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#
-#Example:
-# snmp_access allow snmppublic localhost
-# snmp_access deny all
-#Default:
-# Deny, unless rules exist in squid.conf.
-
-#  TAG: snmp_incoming_address
-#	Just like 'udp_incoming_address', but for the SNMP port.
-#
-#	snmp_incoming_address	is used for the SNMP socket receiving
-#				messages from SNMP agents.
-#
-#	The default snmp_incoming_address is to listen on all
-#	available network interfaces.
-#Default:
-# Accept SNMP packets from all machine interfaces.
-
-#  TAG: snmp_outgoing_address
-#	Just like 'udp_outgoing_address', but for the SNMP port.
-#
-#	snmp_outgoing_address	is used for SNMP packets returned to SNMP
-#				agents.
-#
-#	If snmp_outgoing_address is not set it will use the same socket
-#	as snmp_incoming_address. Only change this if you want to have
-#	SNMP replies sent using another address than where this Squid
-#	listens for SNMP queries.
-#
-#	NOTE, snmp_incoming_address and snmp_outgoing_address can not have
-#	the same value since they both use the same port.
-#Default:
-# Use snmp_incoming_address or an address selected by the operating system.
-
-# ICP OPTIONS
-# -----------------------------------------------------------------------------
-
-#  TAG: icp_port
-#	The port number where Squid sends and receives ICP queries to
-#	and from neighbor caches.  The standard UDP port for ICP is 3130.
-#
-#	Example:
-#		icp_port 3130
-#Default:
-# ICP disabled.
-
-#  TAG: htcp_port
-#	The port number where Squid sends and receives HTCP queries to
-#	and from neighbor caches.  To turn it on you want to set it to
-#	4827.
-#
-#	Example:
-#		htcp_port 4827
-#Default:
-# HTCP disabled.
-
-#  TAG: log_icp_queries	on|off
-#	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.
-#Default:
-# log_icp_queries on
-
-#  TAG: udp_incoming_address
-#	udp_incoming_address	is used for UDP packets received from other
-#				caches.
-#
-#	The default behavior is to not bind to any specific address.
-#
-#	Only change this if you want to have all UDP queries received on
-#	a specific interface/address.
-#
-#	NOTE: udp_incoming_address is used by the ICP, HTCP, and DNS
-#	modules. Altering it will affect all of them in the same manner.
-#
-#	see also; udp_outgoing_address
-#
-#	NOTE, udp_incoming_address and udp_outgoing_address can not
-#	have the same value since they both use the same port.
-#Default:
-# Accept packets from all machine interfaces.
-
-#  TAG: udp_outgoing_address
-#	udp_outgoing_address	is used for UDP packets sent out to other
-#				caches.
-#
-#	The default behavior is to not bind to any specific address.
-#
-#	Instead it will use the same socket as udp_incoming_address.
-#	Only change this if you want to have UDP queries sent using another
-#	address than where this Squid listens for UDP queries from other
-#	caches.
-#
-#	NOTE: udp_outgoing_address is used by the ICP, HTCP, and DNS
-#	modules. Altering it will affect all of them in the same manner.
-#
-#	see also; udp_incoming_address
-#
-#	NOTE, udp_incoming_address and udp_outgoing_address can not
-#	have the same value since they both use the same port.
-#Default:
-# Use udp_incoming_address or an address selected by the operating system.
-
-#  TAG: icp_hit_stale	on|off
-#	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,
-#	it is probably okay to set this to 'on'.
-#	If set to 'on', your siblings should use the option "allow-miss"
-#	on their cache_peer lines for connecting to you.
-#Default:
-# icp_hit_stale off
-
-#  TAG: minimum_direct_hops
-#	If using the ICMP pinging stuff, do direct fetches for sites
-#	which are no more than this many hops away.
-#Default:
-# minimum_direct_hops 4
-
-#  TAG: minimum_direct_rtt	(msec)
-#	If using the ICMP pinging stuff, do direct fetches for sites
-#	which are no more than this many rtt milliseconds away.
-#Default:
-# minimum_direct_rtt 400
-
-#  TAG: netdb_low
-#	The low water mark for the ICMP measurement database.
-#
-#	Note: high watermark controlled by netdb_high directive.
-#
-#	These watermarks are counts, not percents.  The defaults are
-#	(low) 900 and (high) 1000.  When the high water mark is
-#	reached, database entries will be deleted until the low
-#	mark is reached.
-#Default:
-# netdb_low 900
-
-#  TAG: netdb_high
-#	The high water mark for the ICMP measurement database.
-#
-#	Note: low watermark controlled by netdb_low directive.
-#
-#	These watermarks are counts, not percents.  The defaults are
-#	(low) 900 and (high) 1000.  When the high water mark is
-#	reached, database entries will be deleted until the low
-#	mark is reached.
-#Default:
-# netdb_high 1000
-
-#  TAG: netdb_ping_period
-#	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.
-#Default:
-# netdb_ping_period 5 minutes
-
-#  TAG: query_icmp	on|off
-#	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' that peer will send ICMP pings to origin server
-#	sites of the URLs it receives.  If you enable this option 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.
-#Default:
-# query_icmp off
-
-#  TAG: test_reachability	on|off
-#	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.
-#Default:
-# test_reachability off
-
-#  TAG: icp_query_timeout	(msec)
-#	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
-#Default:
-# Dynamic detection.
-
-#  TAG: maximum_icp_query_timeout	(msec)
-#	Normally the ICP query timeout is determined dynamically.  But
-#	sometimes it can lead to very large values (say 5 seconds).
-#	Use this option to put an upper limit on the dynamic timeout
-#	value.  Do NOT use this option to always use a fixed (instead
-#	of a dynamic) timeout value. To set a fixed timeout see the
-#	'icp_query_timeout' directive.
-#Default:
-# maximum_icp_query_timeout 2000
-
-#  TAG: minimum_icp_query_timeout	(msec)
-#	Normally the ICP query timeout is determined dynamically.  But
-#	sometimes it can lead to very small timeouts, even lower than
-#	the normal latency variance on your link due to traffic.
-#	Use this option to put an lower limit on the dynamic timeout
-#	value.  Do NOT use this option to always use a fixed (instead
-#	of a dynamic) timeout value. To set a fixed timeout see the
-#	'icp_query_timeout' directive.
-#Default:
-# minimum_icp_query_timeout 5
-
-#  TAG: background_ping_rate	time-units
-#	Controls how often the ICP pings are sent to siblings that
-#	have background-ping set.
-#Default:
-# background_ping_rate 10 seconds
-
-# MULTICAST ICP OPTIONS
-# -----------------------------------------------------------------------------
-
-#  TAG: mcast_groups
-#	This tag specifies a list of multicast groups which your server
-#	should join to receive multicasted ICP queries.
-#
-#	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.
-#
-#	If you are unsure about multicast, please read the Multicast
-#	chapter in the Squid FAQ (http://www.squid-cache.org/FAQ/).
-#
-#	Usage: mcast_groups 239.128.16.128 224.0.1.20
-#
-#	By default, Squid doesn't listen on any multicast groups.
-#Default:
-# none
-
-#  TAG: mcast_miss_addr
-# Note: This option is only available if Squid is rebuilt with the
-#       -DMULTICAST_MISS_STREAM define
-#
-#	If you enable this option, every "cache miss" URL will
-#	be sent out on the specified multicast address.
-#
-#	Do not enable this option unless you are are absolutely
-#	certain you understand what you are doing.
-#Default:
-# disabled.
-
-#  TAG: mcast_miss_ttl
-# Note: This option is only available if Squid is rebuilt with the
-#       -DMULTICAST_MISS_STREAM define
-#
-#	This is the time-to-live value for packets multicasted
-#	when multicasting off cache miss URLs is enabled.  By
-#	default this is set to 'site scope', i.e. 16.
-#Default:
-# mcast_miss_ttl 16
-
-#  TAG: mcast_miss_port
-# Note: This option is only available if Squid is rebuilt with the
-#       -DMULTICAST_MISS_STREAM define
-#
-#	This is the port number to be used in conjunction with
-#	'mcast_miss_addr'.
-#Default:
-# mcast_miss_port 3135
-
-#  TAG: mcast_miss_encode_key
-# Note: This option is only available if Squid is rebuilt with the
-#       -DMULTICAST_MISS_STREAM define
-#
-#	The URLs that are sent in the multicast miss stream are
-#	encrypted.  This is the encryption key.
-#Default:
-# mcast_miss_encode_key XXXXXXXXXXXXXXXX
-
-#  TAG: mcast_icp_query_timeout	(msec)
-#	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.
-#Default:
-# mcast_icp_query_timeout 2000
-
-# INTERNAL ICON OPTIONS
-# -----------------------------------------------------------------------------
-
-#  TAG: icon_directory
-#	Where the icons are stored. These are normally kept in
-#	/usr/share/squid/icons
-#Default:
-# icon_directory /usr/share/squid/icons
-
-#  TAG: global_internal_static
-#	This directive controls is Squid should intercept all requests for
-#	/squid-internal-static/ no matter which host the URL is requesting
-#	(default on setting), or if nothing special should be done for
-#	such URLs (off setting). The purpose of this directive is to make
-#	icons etc work better in complex cache hierarchies where it may
-#	not always be possible for all corners in the cache mesh to reach
-#	the server generating a directory listing.
-#Default:
-# global_internal_static on
-
-#  TAG: short_icon_urls
-#	If this is enabled Squid will use short URLs for icons.
-#	If disabled it will revert to the old behavior of including
-#	it's own name and port in the URL.
-#
-#	If you run a complex cache hierarchy with a mix of Squid and
-#	other proxies you may need to disable this directive.
-#Default:
-# short_icon_urls on
-
-# ERROR PAGE OPTIONS
-# -----------------------------------------------------------------------------
-
-#  TAG: error_directory
-#	If you wish to create your own versions of the default
-#	error files to customize them to suit your company copy
-#	the error/template files to another directory and point
-#	this tag at them.
-#
-#	WARNING: This option will disable multi-language support
-#	         on error pages if used.
-#
-#	The squid developers are interested in making squid available in
-#	a wide variety of languages. If you are making translations for a
-#	language that Squid does not currently provide please consider
-#	contributing your translation back to the project.
-#	http://wiki.squid-cache.org/Translations
-#
-#	The squid developers working on translations are happy to supply drop-in
-#	translated error files in exchange for any new language contributions.
-#Default:
-# Send error pages in the clients preferred language
-
-#  TAG: error_default_language
-#	Set the default language which squid will send error pages in
-#	if no existing translation matches the clients language
-#	preferences.
-#
-#	If unset (default) generic English will be used.
-#
-#	The squid developers are interested in making squid available in
-#	a wide variety of languages. If you are interested in making
-#	translations for any language see the squid wiki for details.
-#	http://wiki.squid-cache.org/Translations
-#Default:
-# Generate English language pages.
-
-#  TAG: error_log_languages
-#	Log to cache.log what languages users are attempting to
-#	auto-negotiate for translations.
-#
-#	Successful negotiations are not logged. Only failures
-#	have meaning to indicate that Squid may need an upgrade
-#	of its error page translations.
-#Default:
-# error_log_languages on
-
-#  TAG: err_page_stylesheet
-#	CSS Stylesheet to pattern the display of Squid default error pages.
-#
-#	For information on CSS see http://www.w3.org/Style/CSS/
-#Default:
-# err_page_stylesheet /etc/squid/errorpage.css
-
-#  TAG: err_html_text
-#	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.
-#
-#	To include this in your error messages, you must rewrite
-#	the error template files (found in the "errors" directory).
-#	Wherever you want the 'err_html_text' line to appear,
-#	insert a %L tag in the error template file.
-#Default:
-# none
-
-#  TAG: email_err_data	on|off
-#	If enabled, information about the occurred error will be
-#	included in the mailto links of the ERR pages (if %W is set)
-#	so that the email body contains the data.
-#	Syntax is <A HREF="mailto:%w%W">%w</A>
-#Default:
-# email_err_data on
-
-#  TAG: deny_info
-#	Usage:   deny_info err_page_name acl
-#	or       deny_info http://... acl
-#	or       deny_info TCP_RESET acl
-#
-#	This can be used to return a ERR_ page for requests which
-#	do not pass the 'http_access' rules.  Squid remembers the last
-#	acl it evaluated in http_access, and if a 'deny_info' line exists
-#	for that ACL Squid returns a corresponding error page.
-#
-#	The acl is typically the last acl on the http_access deny line which
-#	denied access. The exceptions to this rule are:
-#	- When Squid needs to request authentication credentials. It's then
-#	  the first authentication related acl encountered
-#	- When none of the http_access lines matches. It's then the last
-#	  acl processed on the last http_access line.
-#	- When the decision to deny access was made by an adaptation service,
-#	  the acl name is the corresponding eCAP or ICAP service_name.
-#
-#	NP: If providing your own custom error pages with error_directory
-#	    you may also specify them by your custom file name:
-#	    Example: deny_info ERR_CUSTOM_ACCESS_DENIED bad_guys
-#
-#	By defaut Squid will send "403 Forbidden". A different 4xx or 5xx
-#	may be specified by prefixing the file name with the code and a colon.
-#	e.g. 404:ERR_CUSTOM_ACCESS_DENIED
-#
-#	Alternatively you can tell Squid to reset the TCP connection
-#	by specifying TCP_RESET.
-#
-#	Or you can specify an error URL or URL pattern. The browsers will
-#	get redirected to the specified URL after formatting tags have
-#	been replaced. Redirect will be done with 302 or 307 according to
-#	HTTP/1.1 specs. A different 3xx code may be specified by prefixing
-#	the URL. e.g. 303:http://example.com/
-#
-#	URL FORMAT TAGS:
-#		%a	- username (if available. Password NOT included)
-#		%B	- FTP path URL
-#		%e	- Error number
-#		%E	- Error description
-#		%h	- Squid hostname
-#		%H	- Request domain name
-#		%i	- Client IP Address
-#		%M	- Request Method
-#		%o	- Message result from external ACL helper
-#		%p	- Request Port number
-#		%P	- Request Protocol name
-#		%R	- Request URL path
-#		%T	- Timestamp in RFC 1123 format
-#		%U	- Full canonical URL from client
-#			  (HTTPS URLs terminate with *)
-#		%u	- Full canonical URL from client
-#		%w	- Admin email from squid.conf
-#		%x	- Error name
-#		%%	- Literal percent (%) code
-#
-#Default:
-# none
-
-# OPTIONS INFLUENCING REQUEST FORWARDING 
-# -----------------------------------------------------------------------------
-
-#  TAG: nonhierarchical_direct
-#	By default, Squid will send any non-hierarchical requests
-#	(not cacheable request type) direct to origin servers.
-#
-#	When this is set to "off", Squid will prefer to send these
-#	requests to parents.
-#
-#	Note that in most configurations, by turning this off you will only
-#	add latency to these request without any improvement in global hit
-#	ratio.
-#
-#	This option only sets a preference. If the parent is unavailable a
-#	direct connection to the origin server may still be attempted. To
-#	completely prevent direct connections use never_direct.
-#Default:
-# nonhierarchical_direct on
-
-#  TAG: prefer_direct
-#	Normally Squid tries to use parents for most requests. If you for some
-#	reason like it to first try going direct and only use a parent if
-#	going direct fails set this to on.
-#
-#	By combining nonhierarchical_direct off and prefer_direct on you
-#	can set up Squid to use a parent as a backup path if going direct
-#	fails.
-#
-#	Note: If you want Squid to use parents for all requests see
-#	the never_direct directive. prefer_direct only modifies how Squid
-#	acts on cacheable requests.
-#Default:
-# prefer_direct off
-
-#  TAG: cache_miss_revalidate	on|off
-#	RFC 7232 defines a conditional request mechanism to prevent
-#	response objects being unnecessarily transferred over the network.
-#	If that mechanism is used by the client and a cache MISS occurs
-#	it can prevent new cache entries being created.
-#
-#	This option determines whether Squid on cache MISS will pass the
-#	client revalidation request to the server or tries to fetch new
-#	content for caching. It can be useful while the cache is mostly
-#	empty to more quickly have the cache populated by generating
-#	non-conditional GETs.
-#
-#	When set to 'on' (default), Squid will pass all client If-* headers
-#	to the server. This permits server responses without a cacheable
-#	payload to be delivered and on MISS no new cache entry is created.
-#
-#	When set to 'off' and if the request is cacheable, Squid will
-#	remove the clients If-Modified-Since and If-None-Match headers from
-#	the request sent to the server. This requests a 200 status response
-#	from the server to create a new cache entry with.
-#Default:
-# cache_miss_revalidate on
-
-#  TAG: always_direct
-#	Usage: always_direct allow|deny [!]aclname ...
-#
-#	Here you can use ACL elements to specify requests which should
-#	ALWAYS be forwarded by Squid to the origin servers without using
-#	any peers.  For example, to always directly forward requests for
-#	local servers ignoring any parents or siblings you may have 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
-#
-#	NOTE: If your goal is to make the client forward the request
-#	directly to the origin server bypassing Squid then this needs
-#	to be done in the client configuration. Squid configuration
-#	can only tell Squid how Squid should fetch the object.
-#
-#	NOTE: This directive is not related to caching. The replies
-#	is cached as usual even if you use always_direct. To not cache
-#	the replies see the 'cache' directive.
-#
-#	This clause supports both fast and slow acl types.
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#Default:
-# Prevent any cache_peer being used for this request.
-
-#  TAG: never_direct
-#	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.  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 .foo.net
-#		never_direct deny local-servers
-#		never_direct allow all
-#
-#	or if Squid is inside a firewall and there are local intranet
-#	servers inside the firewall use something like:
-#
-#		acl local-intranet dstdomain .foo.net
-#		acl local-external dstdomain external.foo.net
-#		always_direct deny local-external
-#		always_direct allow local-intranet
-#		never_direct allow all
-#
-#	This clause supports both fast and slow acl types.
-#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
-#Default:
-# Allow DNS results to be used for this request.
-
-# ADVANCED NETWORKING OPTIONS
-# -----------------------------------------------------------------------------
-
-#  TAG: incoming_udp_average
-#	Heavy voodoo here.  I can't even believe you are reading this.
-#	Are you crazy?  Don't even think about adjusting these unless
-#	you understand the algorithms in comm_select.c first!
-#Default:
-# incoming_udp_average 6
-
-#  TAG: incoming_tcp_average
-#	Heavy voodoo here.  I can't even believe you are reading this.
-#	Are you crazy?  Don't even think about adjusting these unless
-#	you understand the algorithms in comm_select.c first!
-#Default:
-# incoming_tcp_average 4
-
-#  TAG: incoming_dns_average
-#	Heavy voodoo here.  I can't even believe you are reading this.
-#	Are you crazy?  Don't even think about adjusting these unless
-#	you understand the algorithms in comm_select.c first!
-#Default:
-# incoming_dns_average 4
-
-#  TAG: min_udp_poll_cnt
-#	Heavy voodoo here.  I can't even believe you are reading this.
-#	Are you crazy?  Don't even think about adjusting these unless
-#	you understand the algorithms in comm_select.c first!
-#Default:
-# min_udp_poll_cnt 8
-
-#  TAG: min_dns_poll_cnt
-#	Heavy voodoo here.  I can't even believe you are reading this.
-#	Are you crazy?  Don't even think about adjusting these unless
-#	you understand the algorithms in comm_select.c first!
-#Default:
-# min_dns_poll_cnt 8
-
-#  TAG: min_tcp_poll_cnt
-#	Heavy voodoo here.  I can't even believe you are reading this.
-#	Are you crazy?  Don't even think about adjusting these unless
-#	you understand the algorithms in comm_select.c first!
-#Default:
-# min_tcp_poll_cnt 8
-
-#  TAG: accept_filter
-#	FreeBSD:
-#
-#	The name of an accept(2) filter to install on Squid's
-#	listen socket(s).  This feature is perhaps specific to
-#	FreeBSD and requires support in the kernel.
-#
-#	The 'httpready' filter delays delivering new connections
-#	to Squid until a full HTTP request has been received.
-#	See the accf_http(9) man page for details.
-#
-#	The 'dataready' filter delays delivering new connections
-#	to Squid until there is some data to process.
-#	See the accf_dataready(9) man page for details.
-#
-#	Linux:
-#	
-#	The 'data' filter delays delivering of new connections
-#	to Squid until there is some data to process by TCP_ACCEPT_DEFER.
-#	You may optionally specify a number of seconds to wait by
-#	'data=N' where N is the number of seconds. Defaults to 30
-#	if not specified.  See the tcp(7) man page for details.
-#EXAMPLE:
-## FreeBSD
-#accept_filter httpready
-## Linux
-#accept_filter data
-#Default:
-# none
-
-#  TAG: client_ip_max_connections
-#	Set an absolute limit on the number of connections a single
-#	client IP can use. Any more than this and Squid will begin to drop
-#	new connections from the client until it closes some links.
-#
-#	Note that this is a global limit. It affects all HTTP, HTCP, Gopher and FTP
-#	connections from the client. For finer control use the ACL access controls.
-#
-#	Requires client_db to be enabled (the default).
-#
-#	WARNING: This may noticably slow down traffic received via external proxies
-#	or NAT devices and cause them to rebound error messages back to their clients.
-#Default:
-# No limit.
-
-#  TAG: tcp_recv_bufsize	(bytes)
-#	Size of receive buffer to set for TCP sockets.  Probably just
-#	as easy to change your kernel's default.
-#	Omit from squid.conf to use the default buffer size.
-#Default:
-# Use operating system TCP defaults.
-
-# ICAP OPTIONS
-# -----------------------------------------------------------------------------
-
-#  TAG: icap_enable	on|off
-#	If you want to enable the ICAP module support, set this to on.
-#Default:
-# icap_enable off
-
-#  TAG: icap_connect_timeout
-#	This parameter specifies how long to wait for the TCP connect to
-#	the requested ICAP server to complete before giving up and either
-#	terminating the HTTP transaction or bypassing the failure.
-#
-#	The default for optional services is peer_connect_timeout.
-#	The default for essential services is connect_timeout.
-#	If this option is explicitly set, its value applies to all services.
-#Default:
-# none
-
-#  TAG: icap_io_timeout	time-units
-#	This parameter specifies how long to wait for an I/O activity on
-#	an established, active ICAP connection before giving up and
-#	either terminating the HTTP transaction or bypassing the
-#	failure.
-#Default:
-# Use read_timeout.
-
-#  TAG: icap_service_failure_limit	limit [in memory-depth time-units]
-#	The limit specifies the number of failures that Squid tolerates
-#	when establishing a new TCP connection with an ICAP service. If
-#	the number of failures exceeds the limit, the ICAP service is
-#	not used for new ICAP requests until it is time to refresh its
-#	OPTIONS.
-#
-#	A negative value disables the limit. Without the limit, an ICAP
-#	service will not be considered down due to connectivity failures
-#	between ICAP OPTIONS requests.
-#
-#	Squid forgets ICAP service failures older than the specified
-#	value of memory-depth. The memory fading algorithm 
-#	is approximate because Squid does not remember individual 
-#	errors but groups them instead, splitting the option
-#	value into ten time slots of equal length.
-#
-#	When memory-depth is 0 and by default this option has no 
-#	effect on service failure expiration.
-#
-#	Squid always forgets failures when updating service settings
-#	using an ICAP OPTIONS transaction, regardless of this option
-#	setting.
-#
-#	For example,
-#		# suspend service usage after 10 failures in 5 seconds:
-#		icap_service_failure_limit 10 in 5 seconds
-#Default:
-# icap_service_failure_limit 10
-
-#  TAG: icap_service_revival_delay
-#	The delay specifies the number of seconds to wait after an ICAP
-#	OPTIONS request failure before requesting the options again. The
-#	failed ICAP service is considered "down" until fresh OPTIONS are
-#	fetched.
-#
-#	The actual delay cannot be smaller than the hardcoded minimum
-#	delay of 30 seconds.
-#Default:
-# icap_service_revival_delay 180
-
-#  TAG: icap_preview_enable	on|off
-#	The ICAP Preview feature allows the ICAP server to handle the
-#	HTTP message by looking only at the beginning of the message body
-#	or even without receiving the body at all. In some environments, 
-#	previews greatly speedup ICAP processing.
-#
-#	During an ICAP OPTIONS transaction, the server may tell	Squid what
-#	HTTP messages should be previewed and how big the preview should be.
-#	Squid will not use Preview if the server did not request one.
-#
-#	To disable ICAP Preview for all ICAP services, regardless of
-#	individual ICAP server OPTIONS responses, set this option to "off".
-#Example:
-#icap_preview_enable off
-#Default:
-# icap_preview_enable on
-
-#  TAG: icap_preview_size
-#	The default size of preview data to be sent to the ICAP server.
-#	This value might be overwritten on a per server basis by OPTIONS requests.
-#Default:
-# No preview sent.
-
-#  TAG: icap_206_enable	on|off
-#	206 (Partial Content) responses is an ICAP extension that allows the
-#	ICAP agents to optionally combine adapted and original HTTP message
-#	content. The decision to combine is postponed until the end of the
-#	ICAP response. Squid supports Partial Content extension by default.
-#
-#	Activation of the Partial Content extension is negotiated with each
-#	ICAP service during OPTIONS exchange. Most ICAP servers should handle
-#	negotation correctly even if they do not support the extension, but
-#	some might fail. To disable Partial Content support for all ICAP
-#	services and to avoid any negotiation, set this option to "off".
-#
-#	Example:
-#	    icap_206_enable off
-#Default:
-# icap_206_enable on
-
-#  TAG: icap_default_options_ttl
-#	The default TTL value for ICAP OPTIONS responses that don't have
-#	an Options-TTL header.
-#Default:
-# icap_default_options_ttl 60
-
-#  TAG: icap_persistent_connections	on|off
-#	Whether or not Squid should use persistent connections to
-#	an ICAP server.
-#Default:
-# icap_persistent_connections on
-
-#  TAG: adaptation_send_client_ip	on|off
-#	If enabled, Squid shares HTTP client IP information with adaptation
-#	services. For ICAP, Squid adds the X-Client-IP header to ICAP requests.
-#	For eCAP, Squid sets the libecap::metaClientIp transaction option.
-#
-#	See also: adaptation_uses_indirect_client
-#Default:
-# adaptation_send_client_ip off
-
-#  TAG: adaptation_send_username	on|off
-#	This sends authenticated HTTP client username (if available) to
-#	the adaptation service.
-#
-#	For ICAP, the username value is encoded based on the
-#	icap_client_username_encode option and is sent using the header
-#	specified by the icap_client_username_header option.
-#Default:
-# adaptation_send_username off
-
-#  TAG: icap_client_username_header
-#	ICAP request header name to use for adaptation_send_username.
-#Default:
-# icap_client_username_header X-Client-Username
-
-#  TAG: icap_client_username_encode	on|off
-#	Whether to base64 encode the authenticated client username.
-#Default:
-# icap_client_username_encode off
-
-#  TAG: icap_service
-#	Defines a single ICAP service using the following format:
-#
-#	icap_service id vectoring_point uri [option ...]
-#
-#	id: ID
-#		an opaque identifier or name which is used to direct traffic to
-#		this specific service. Must be unique among all adaptation
-#		services in squid.conf.
-#
-#	vectoring_point: reqmod_precache|reqmod_postcache|respmod_precache|respmod_postcache
-#		This specifies at which point of transaction processing the
-#		ICAP service should be activated. *_postcache vectoring points
-#		are not yet supported.
-#
-#	uri: icap://servername:port/servicepath
-#		ICAP server and service location.
-#
-#	ICAP does not allow a single service to handle both REQMOD and RESPMOD
-#	transactions. Squid does not enforce that requirement. You can specify
-#	services with the same service_url and different vectoring_points. You
-#	can even specify multiple identical services as long as their
-#	service_names differ.
-#
-#	To activate a service, use the adaptation_access directive. To group
-#	services, use adaptation_service_chain and adaptation_service_set.
-#
-#	Service options are separated by white space. ICAP services support
-#	the following name=value options:
-#
-#	bypass=on|off|1|0
-#		If set to 'on' or '1', the ICAP service is treated as
-#		optional. If the service cannot be reached or malfunctions,
-#		Squid will try to ignore any errors and process the message as
-#		if the service was not enabled. No all ICAP errors can be
-#		bypassed.  If set to 0, the ICAP service is treated as
-#		essential and all ICAP errors will result in an error page
-#		returned to the HTTP client.
-#
-#		Bypass is off by default: services are treated as essential.
-#
-#	routing=on|off|1|0
-#		If set to 'on' or '1', the ICAP service is allowed to
-#		dynamically change the current message adaptation plan by
-#		returning a chain of services to be used next. The services
-#		are specified using the X-Next-Services ICAP response header
-#		value, formatted as a comma-separated list of service names.
-#		Each named service should be configured in squid.conf. Other
-#		services are ignored. An empty X-Next-Services value results
-#		in an empty plan which ends the current adaptation.
-#
-#		Dynamic adaptation plan may cross or cover multiple supported
-#		vectoring points in their natural processing order.
-#
-#		Routing is not allowed by default: the ICAP X-Next-Services
-#		response header is ignored.
-#
-#	ipv6=on|off
-#		Only has effect on split-stack systems. The default on those systems
-#		is to use IPv4-only connections. When set to 'on' this option will
-#		make Squid use IPv6-only connections to contact this ICAP service.
-#
-#	on-overload=block|bypass|wait|force
-#		If the service Max-Connections limit has been reached, do
-#		one of the following for each new ICAP transaction:
-#		  * block:  send an HTTP error response to the client
-#		  * bypass: ignore the "over-connected" ICAP service
-#		  * wait:   wait (in a FIFO queue) for an ICAP connection slot
-#		  * force:  proceed, ignoring the Max-Connections limit 
-#
-#		In SMP mode with N workers, each worker assumes the service
-#		connection limit is Max-Connections/N, even though not all
-#		workers may use a given service.
-#
-#		The default value is "bypass" if service is bypassable,
-#		otherwise it is set to "wait".
-#		
-#
-#	max-conn=number
-#		Use the given number as the Max-Connections limit, regardless
-#		of the Max-Connections value given by the service, if any.
-#
-#	Older icap_service format without optional named parameters is
-#	deprecated but supported for backward compatibility.
-#
-#Example:
-#icap_service svcBlocker reqmod_precache icap://icap1.mydomain.net:1344/reqmod bypass=0
-#icap_service svcLogger reqmod_precache icap://icap2.mydomain.net:1344/respmod routing=on
-#Default:
-# none
-
-#  TAG: icap_class
-#	This deprecated option was documented to define an ICAP service
-#	chain, even though it actually defined a set of similar, redundant
-#	services, and the chains were not supported. 
-#
-#	To define a set of redundant services, please use the
-#	adaptation_service_set directive. For service chains, use
-#	adaptation_service_chain.
-#Default:
-# none
-
-#  TAG: icap_access
-#	This option is deprecated. Please use adaptation_access, which
-#	has the same ICAP functionality, but comes with better
-#	documentation, and eCAP support.
-#Default:
-# none
-
-# eCAP OPTIONS
-# -----------------------------------------------------------------------------
-
-#  TAG: ecap_enable	on|off
-#	Controls whether eCAP support is enabled.
-#Default:
-# ecap_enable off
-
-#  TAG: ecap_service
-#	Defines a single eCAP service
-#
-#	ecap_service id vectoring_point uri [option ...]
-#
-#        id: ID
-#		an opaque identifier or name which is used to direct traffic to
-#		this specific service. Must be unique among all adaptation
-#		services in squid.conf.
-#
-#	vectoring_point: reqmod_precache|reqmod_postcache|respmod_precache|respmod_postcache
-#		This specifies at which point of transaction processing the
-#		eCAP service should be activated. *_postcache vectoring points
-#		are not yet supported.
-#
-#	uri: ecap://vendor/service_name?custom&cgi=style&parameters=optional
-#		Squid uses the eCAP service URI to match this configuration
-#		line with one of the dynamically loaded services. Each loaded
-#		eCAP service must have a unique URI. Obtain the right URI from
-#		the service provider.
-#
-#	To activate a service, use the adaptation_access directive. To group
-#	services, use adaptation_service_chain and adaptation_service_set.
-#
-#	Service options are separated by white space. eCAP services support
-#	the following name=value options:
-#
-#	bypass=on|off|1|0
-#		If set to 'on' or '1', the eCAP service is treated as optional.
-#		If the service cannot be reached or malfunctions, Squid will try
-#		to ignore any errors and process the message as if the service
-#		was not enabled. No all eCAP errors can be bypassed.
-#		If set to 'off' or '0', the eCAP service is treated as essential
-#		and all eCAP errors will result in an error page returned to the
-#		HTTP client.
-#
-#                Bypass is off by default: services are treated as essential.
-#
-#	routing=on|off|1|0
-#		If set to 'on' or '1', the eCAP service is allowed to
-#		dynamically change the current message adaptation plan by
-#		returning a chain of services to be used next.
-#
-#		Dynamic adaptation plan may cross or cover multiple supported
-#		vectoring points in their natural processing order.
-#
-#		Routing is not allowed by default.
-#
-#	Older ecap_service format without optional named parameters is
-#	deprecated but supported for backward compatibility.
-#
-#
-#Example:
-#ecap_service s1 reqmod_precache ecap://filters.R.us/leakDetector?on_error=block bypass=off
-#ecap_service s2 respmod_precache ecap://filters.R.us/virusFilter config=/etc/vf.cfg bypass=on
-#Default:
-# none
-
-#  TAG: loadable_modules
-#	Instructs Squid to load the specified dynamic module(s) or activate
-#	preloaded module(s).
-#Example:
-#loadable_modules /usr/lib/MinimalAdapter.so
-#Default:
-# none
-
-# MESSAGE ADAPTATION OPTIONS
-# -----------------------------------------------------------------------------
-
-#  TAG: adaptation_service_set
-#
-#	Configures an ordered set of similar, redundant services. This is
-#	useful when hot standby or backup adaptation servers are available.
-#
-#	    adaptation_service_set set_name service_name1 service_name2 ...
-#
-# 	The named services are used in the set declaration order. The first
-#	applicable adaptation service from the set is used first. The next
-#	applicable service is tried if and only if the transaction with the
-#	previous service fails and the message waiting to be adapted is still
-#	intact.
-#
-#	When adaptation starts, broken services are ignored as if they were
-#	not a part of the set. A broken service is a down optional service.
-#
-#	The services in a set must be attached to the same vectoring point
-#	(e.g., pre-cache) and use the same adaptation method (e.g., REQMOD).
-#
-#	If all services in a set are optional then adaptation failures are
-#	bypassable. If all services in the set are essential, then a
-#	transaction failure with one service may still be retried using
-#	another service from the set, but when all services fail, the master
-#	transaction fails as well.
-#
-#	A set may contain a mix of optional and essential services, but that
-#	is likely to lead to surprising results because broken services become
-#	ignored (see above), making previously bypassable failures fatal.
-#	Technically, it is the bypassability of the last failed service that
-#	matters.
-#
-#	See also: adaptation_access adaptation_service_chain
-#
-#Example:
-#adaptation_service_set svcBlocker urlFilterPrimary urlFilterBackup
-#adaptation service_set svcLogger loggerLocal loggerRemote
-#Default:
-# none
-
-#  TAG: adaptation_service_chain
-#
-#	Configures a list of complementary services that will be applied
-#	one-by-one, forming an adaptation chain or pipeline. This is useful
-#	when Squid must perform different adaptations on the same message.
-#
-#	    adaptation_service_chain chain_name service_name1 svc_name2 ...
-#
-# 	The named services are used in the chain declaration order. The first
-#	applicable adaptation service from the chain is used first. The next
-#	applicable service is applied to the successful adaptation results of
-#	the previous service in the chain.
-#
-#	When adaptation starts, broken services are ignored as if they were
-#	not a part of the chain. A broken service is a down optional service.
-#
-#	Request satisfaction terminates the adaptation chain because Squid
-#	does not currently allow declaration of RESPMOD services at the
-#	"reqmod_precache" vectoring point (see icap_service or ecap_service).
-#
-#	The services in a chain must be attached to the same vectoring point
-#	(e.g., pre-cache) and use the same adaptation method (e.g., REQMOD).
-#
-#	A chain may contain a mix of optional and essential services. If an
-#	essential adaptation fails (or the failure cannot be bypassed for
-#	other reasons), the master transaction fails. Otherwise, the failure
-#	is bypassed as if the failed adaptation service was not in the chain.
-#
-#	See also: adaptation_access adaptation_service_set
-#
-#Example:
-#adaptation_service_chain svcRequest requestLogger urlFilter leakDetector
-#Default:
-# none
-
-#  TAG: adaptation_access
-#	Sends an HTTP transaction to an ICAP or eCAP adaptation	service.
-#
-#	adaptation_access service_name allow|deny [!]aclname...
-#	adaptation_access set_name     allow|deny [!]aclname...
-#
-#	At each supported vectoring point, the adaptation_access
-#	statements are processed in the order they appear in this
-#	configuration file. Statements pointing to the following services
-#	are ignored (i.e., skipped without checking their ACL):
-#
-#	    - services serving different vectoring points
-#	    - "broken-but-bypassable" services
-#	    - "up" services configured to ignore such transactions
-#              (e.g., based on the ICAP Transfer-Ignore header).
-#
-#        When a set_name is used, all services in the set are checked
-#	using the same rules, to find the first applicable one. See
-#	adaptation_service_set for details.
-#
-#	If an access list is checked and there is a match, the
-#	processing stops: For an "allow" rule, the corresponding
-#	adaptation service is used for the transaction. For a "deny"
-#	rule, no adaptation service is activated.
-#
-#	It is currently not possible to apply more than one adaptation
-#	service at the same vectoring point to the same HTTP transaction.
-#
-#        See also: icap_service and ecap_service
-#
-#Example:
-#adaptation_access service_1 allow all
-#Default:
-# Allow, unless rules exist in squid.conf.
-
-#  TAG: adaptation_service_iteration_limit
-#	Limits the number of iterations allowed when applying adaptation
-#	services to a message. If your longest adaptation set or chain
-#	may have more than 16 services, increase the limit beyond its
-#	default value of 16. If detecting infinite iteration loops sooner
-#	is critical, make the iteration limit match the actual number
-#	of services in your longest adaptation set or chain.
-#
-#	Infinite adaptation loops are most likely with routing services.
-#
-#	See also: icap_service routing=1
-#Default:
-# adaptation_service_iteration_limit 16
-
-#  TAG: adaptation_masterx_shared_names
-#	For each master transaction (i.e., the HTTP request and response
-#	sequence, including all related ICAP and eCAP exchanges), Squid
-#	maintains a table of metadata. The table entries are (name, value)
-#	pairs shared among eCAP and ICAP exchanges. The table is destroyed
-#	with the master transaction.
-#
-#	This option specifies the table entry names that Squid must accept
-#	from and forward to the adaptation transactions.
-#
-#	An ICAP REQMOD or RESPMOD transaction may set an entry in the 
-#	shared table by returning an ICAP header field with a name 
-#	specified in adaptation_masterx_shared_names.
-#
-#	An eCAP REQMOD or RESPMOD transaction may set an entry in the
-#	shared table by implementing the libecap::visitEachOption() API
-#	to provide an option with a name specified in
-#	adaptation_masterx_shared_names.
-#
-#	Squid will store and forward the set entry to subsequent adaptation
-#	transactions within the same master transaction scope.
-#
-#	Only one shared entry name is supported at this time.
-#
-#Example:
-## share authentication information among ICAP services
-#adaptation_masterx_shared_names X-Subscriber-ID
-#Default:
-# none
-
-#  TAG: adaptation_meta
-#	This option allows Squid administrator to add custom ICAP request
-#	headers or eCAP options to Squid ICAP requests or eCAP transactions.
-#	Use it to pass custom authentication tokens and other
-#	transaction-state related meta information to an ICAP/eCAP service.
-#	
-#	The addition of a meta header is ACL-driven:
-#		adaptation_meta name value [!]aclname ...
-#	
-#	Processing for a given header name stops after the first ACL list match.
-#	Thus, it is impossible to add two headers with the same name. If no ACL
-#	lists match for a given header name, no such header is added. For 
-#	example:
-#	
-#		# do not debug transactions except for those that need debugging
-#		adaptation_meta X-Debug 1 needs_debugging
-#	
-#		# log all transactions except for those that must remain secret
-#		adaptation_meta X-Log 1 !keep_secret
-#	
-#		# mark transactions from users in the "G 1" group
-#		adaptation_meta X-Authenticated-Groups "G 1" authed_as_G1
-#	
-#	The "value" parameter may be a regular squid.conf token or a "double
-#	quoted string". Within the quoted string, use backslash (\) to escape
-#	any character, which is currently only useful for escaping backslashes
-#	and double quotes. For example,
-#	    "this string has one backslash (\\) and two \"quotes\""
-#
-#	Used adaptation_meta header values may be logged via %note
-#	logformat code. If multiple adaptation_meta headers with the same name
-#	are used during master transaction lifetime, the header values are
-#	logged in the order they were used and duplicate values are ignored
-#	(only the first repeated value will be logged).
-#Default:
-# none
-
-#  TAG: icap_retry
-#	This ACL determines which retriable ICAP transactions are
-#	retried. Transactions that received a complete ICAP response
-#	and did not have to consume or produce HTTP bodies to receive
-#	that response are usually retriable.
-#
-#	icap_retry allow|deny [!]aclname ...
-#
-#	Squid automatically retries some ICAP I/O timeouts and errors
-#	due to persistent connection race conditions.
-#
-#	See also: icap_retry_limit
-#Default:
-# icap_retry deny all
-
-#  TAG: icap_retry_limit
-#	Limits the number of retries allowed.
-#
-#	Communication errors due to persistent connection race
-#	conditions are unavoidable, automatically retried, and do not
-#	count against this limit.
-#
-#	See also: icap_retry
-#Default:
-# No retries are allowed.
-
-# DNS OPTIONS
-# -----------------------------------------------------------------------------
-
-#  TAG: check_hostnames
-#	For security and stability reasons Squid can check
-#	hostnames for Internet standard RFC compliance. If you want
-#	Squid to perform these checks turn this directive on.
-#Default:
-# check_hostnames off
-
-#  TAG: allow_underscore
-#	Underscore characters is not strictly allowed in Internet hostnames
-#	but nevertheless used by many sites. Set this to off if you want
-#	Squid to be strict about the standard.
-#	This check is performed only when check_hostnames is set to on.
-#Default:
-# allow_underscore on
-
-#  TAG: dns_retransmit_interval
-#	Initial retransmit interval for DNS queries. The interval is
-#	doubled each time all configured DNS servers have been tried.
-#Default:
-# dns_retransmit_interval 5 seconds
-
-#  TAG: dns_timeout
-#	DNS Query timeout. If no response is received to a DNS query
-#	within this time all DNS servers for the queried domain
-#	are assumed to be unavailable.
-#Default:
-# dns_timeout 30 seconds
-
-#  TAG: dns_packet_max
-#	Maximum number of bytes packet size to advertise via EDNS.
-#	Set to "none" to disable EDNS large packet support.
-#	
-#	For legacy reasons DNS UDP replies will default to 512 bytes which
-#	is too small for many responses. EDNS provides a means for Squid to
-#	negotiate receiving larger responses back immediately without having
-#	to failover with repeat requests. Responses larger than this limit
-#	will retain the old behaviour of failover to TCP DNS.
-#	
-#	Squid has no real fixed limit internally, but allowing packet sizes
-#	over 1500 bytes requires network jumbogram support and is usually not
-#	necessary.
-#	
-#	WARNING: The RFC also indicates that some older resolvers will reply
-#	with failure of the whole request if the extension is added. Some
-#	resolvers have already been identified which will reply with mangled
-#	EDNS response on occasion. Usually in response to many-KB jumbogram
-#	sizes being advertised by Squid.
-#	Squid will currently treat these both as an unable-to-resolve domain
-#	even if it would be resolvable without EDNS.
-#Default:
-# EDNS disabled
-
-#  TAG: dns_defnames	on|off
-#	Normally the RES_DEFNAMES resolver option is disabled
-#	(see res_init(3)).  This prevents caches in a hierarchy
-#	from interpreting single-component hostnames locally.  To allow
-#	Squid to handle single-component names, enable this option.
-#Default:
-# Search for single-label domain names is disabled.
-
-#  TAG: dns_multicast_local	on|off
-#	When set to on, Squid sends multicast DNS lookups on the local
-#	network for domains ending in .local and .arpa.
-#	This enables local servers and devices to be contacted in an
-#	ad-hoc or zero-configuration network environment.
-#Default:
-# Search for .local and .arpa names is disabled.
-
-#  TAG: dns_nameservers
-#	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.
-#
-#	On Windows platforms, if no value is specified here or in
-#	the /etc/resolv.conf file, the list of DNS name servers are
-#	taken from the Windows registry, both static and dynamic DHCP
-#	configurations are supported.
-#
-#	Example: dns_nameservers 10.0.0.1 192.172.0.4
-#Default:
-# Use operating system definitions
-
-#  TAG: hosts_file
-#	Location of the host-local IP name-address associations
-#	database. Most Operating Systems have such a file on different
-#	default locations:
-#	- Un*X & Linux:    /etc/hosts
-#	- Windows NT/2000: %SystemRoot%\system32\drivers\etc\hosts
-#			   (%SystemRoot% value install default is c:\winnt)
-#	- Windows XP/2003: %SystemRoot%\system32\drivers\etc\hosts
-#			   (%SystemRoot% value install default is c:\windows)
-#	- Windows 9x/Me:   %windir%\hosts
-#			   (%windir% value is usually c:\windows)
-#	- Cygwin:	   /etc/hosts
-#
-#	The file contains newline-separated definitions, in the
-#	form ip_address_in_dotted_form name [name ...] names are
-#	whitespace-separated. Lines beginning with an hash (#)
-#	character are comments.
-#
-#	The file is checked at startup and upon configuration.
-#	If set to 'none', it won't be checked.
-#	If append_domain is used, that domain will be added to
-#	domain-local (i.e. not containing any dot character) host
-#	definitions.
-#Default:
-# hosts_file /etc/hosts
-
-#  TAG: append_domain
-#	Appends local domain name to hostnames without any dots in
-#	them.  append_domain must begin with a period.
-#
-#	Be warned there are now Internet names with no dots in
-#	them using only top-domain names, so setting this may
-#	cause some Internet sites to become unavailable.
-#
-#Example:
-# append_domain .yourdomain.com
-#Default:
-# Use operating system definitions
-
-#  TAG: ignore_unknown_nameservers
-#	By default Squid checks that DNS responses are received
-#	from the same IP addresses they are sent to.  If they
-#	don't match, Squid ignores the response and writes a warning
-#	message to cache.log.  You can allow responses from unknown
-#	nameservers by setting this option to 'off'.
-#Default:
-# ignore_unknown_nameservers on
-
-#  TAG: dns_v4_first
-#	With the IPv6 Internet being as fast or faster than IPv4 Internet
-#	for most networks Squid prefers to contact websites over IPv6.
-#
-#	This option reverses the order of preference to make Squid contact
-#	dual-stack websites over IPv4 first. Squid will still perform both
-#	IPv6 and IPv4 DNS lookups before connecting.
-#
-#	WARNING:
-#	  This option will restrict the situations under which IPv6
-#	  connectivity is used (and tested), potentially hiding network
-#	  problems which would otherwise be detected and warned about.
-#Default:
-# dns_v4_first off
-
-#  TAG: ipcache_size	(number of entries)
-#	Maximum number of DNS IP cache entries.
-#Default:
-# ipcache_size 1024
-
-#  TAG: ipcache_low	(percent)
-#Default:
-# ipcache_low 90
-
-#  TAG: ipcache_high	(percent)
-#	The size, low-, and high-water marks for the IP cache.
-#Default:
-# ipcache_high 95
-
-#  TAG: fqdncache_size	(number of entries)
-#	Maximum number of FQDN cache entries.
-#Default:
-# fqdncache_size 1024
-
-# MISCELLANEOUS
-# -----------------------------------------------------------------------------
-
-#  TAG: configuration_includes_quoted_values	on|off
-#	If set, Squid will recognize each "quoted string" after a configuration
-#	directive as a single parameter. The quotes are stripped before the
-#	parameter value is interpreted or used.
-#	See "Values with spaces, quotes, and other special characters"
-#	section for more details.
-#Default:
-# configuration_includes_quoted_values off
-
-#  TAG: memory_pools	on|off
-#	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.
-#Default:
-# memory_pools on
-
-#  TAG: memory_pools_limit	(bytes)
-#	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 set to none, 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 or none. 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.
-#Default:
-# memory_pools_limit 5 MB
-
-#  TAG: forwarded_for	on|off|transparent|truncate|delete
-#	If set to "on", Squid will append your client's IP address
-#	in the HTTP requests it forwards. By default it looks like:
-#
-#		X-Forwarded-For: 192.1.2.3
-#
-#	If set to "off", it will appear as
-#
-#		X-Forwarded-For: unknown
-#
-#	If set to "transparent", Squid will not alter the
-#	X-Forwarded-For header in any way.
-#
-#	If set to "delete", Squid will delete the entire
-#	X-Forwarded-For header.
-#
-#	If set to "truncate", Squid will remove all existing
-#	X-Forwarded-For entries, and place the client IP as the sole entry.
-#Default:
-# forwarded_for on
-
-#  TAG: cachemgr_passwd
-#	Specify passwords for cachemgr operations.
-#
-#	Usage: cachemgr_passwd password action action ...
-#
-#	Some valid actions are (see cache manager menu for a full list):
-#		5min
-#		60min
-#		asndb
-#		authenticator
-#		cbdata
-#		client_list
-#		comm_incoming
-#		config *
-#		counters
-#		delay
-#		digest_stats
-#		dns
-#		events
-#		filedescriptors
-#		fqdncache
-#		histograms
-#		http_headers
-#		info
-#		io
-#		ipcache
-#		mem
-#		menu
-#		netdb
-#		non_peers
-#		objects
-#		offline_toggle *
-#		pconn
-#		peer_select
-#		reconfigure *
-#		redirector
-#		refresh
-#		server_list
-#		shutdown *
-#		store_digest
-#		storedir
-#		utilization
-#		via_headers
-#		vm_objects
-#
-#	* 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.
-#
-#Example:
-# cachemgr_passwd secret shutdown
-# cachemgr_passwd lesssssssecret info stats/objects
-# cachemgr_passwd disable all
-#Default:
-# No password. Actions which require password are denied.
-
-#  TAG: client_db	on|off
-#	If you want to disable collecting per-client statistics,
-#	turn off client_db here.
-#Default:
-# client_db on
-
-#  TAG: refresh_all_ims	on|off
-#	When you enable this option, squid will always check
-#	the origin server for an update when a client sends an
-#	If-Modified-Since request.  Many browsers use IMS
-#	requests when the user requests a reload, and this
-#	ensures those clients receive the latest version.
-#
-#	By default (off), squid may return a Not Modified response
-#	based on the age of the cached version.
-#Default:
-# refresh_all_ims off
-
-#  TAG: reload_into_ims	on|off
-#	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.
-#Default:
-# reload_into_ims off
-
-#  TAG: connect_retries
-#	This sets the maximum number of connection attempts made for each
-#	TCP connection. The connect_retries attempts must all still
-#	complete within the connection timeout period.
-#
-#	The default is not to re-try if the first connection attempt fails.
-#	The (not recommended) maximum is 10 tries.
-#
-#	A warning message will be generated if it is set to a too-high
-#	value and the configured value will be over-ridden.
-#
-#	Note: These re-tries are in addition to forward_max_tries
-#	which limit how many different addresses may be tried to find
-#	a useful server.
-#Default:
-# Do not retry failed connections.
-
-#  TAG: retry_on_error
-#	If set to ON Squid will automatically retry requests when
-#	receiving an error response with status 403 (Forbidden),
-#	500 (Internal Error), 501 or 503 (Service not available).
-#	Status 502 and 504 (Gateway errors) are always retried.
-#	
-#	This is mainly useful if you are in a complex cache hierarchy to
-#	work around access control errors.
-#	
-#	NOTE: This retry will attempt to find another working destination.
-#	Which is different from the server which just failed.
-#Default:
-# retry_on_error off
-
-#  TAG: as_whois_server
-#	WHOIS server to query for AS numbers.  NOTE: AS numbers are
-#	queried only when Squid starts up, not for every request.
-#Default:
-# as_whois_server whois.ra.net
-
-#  TAG: offline_mode
-#	Enable this option and Squid will never try to validate cached
-#	objects.
-#Default:
-# offline_mode off
-
-#  TAG: uri_whitespace
-#	What to do with requests that have whitespace characters in the
-#	URI.  Options:
-#
-#	strip:  The whitespace characters are stripped out of the URL.
-#		This is the behavior recommended by RFC2396 and RFC3986
-#		for tolerant handling of generic URI.
-#		NOTE: This is one difference between generic URI and HTTP URLs.
-#
-#	deny:   The request is denied.  The user receives an "Invalid
-#		Request" message.
-#		This is the behaviour recommended by RFC2616 for safe
-#		handling of HTTP request URL.
-#
-#	allow:  The request is allowed and the URI is not changed.  The
-#		whitespace characters remain in the URI.  Note the
-#		whitespace is passed to redirector processes if they
-#		are in use.
-#		Note this may be considered a violation of RFC2616
-#		request parsing where whitespace is prohibited in the
-#		URL field.
-#
-#	encode:	The request is allowed and the whitespace characters are
-#		encoded according to RFC1738.
-#
-#	chop:	The request is allowed and the URI is chopped at the
-#		first whitespace.
-#
-#
-#	NOTE the current Squid implementation of encode and chop violates
-#	RFC2616 by not using a 301 redirect after altering the URL.
-#Default:
-# uri_whitespace strip
-
-#  TAG: chroot
-#	Specifies a directory where Squid should do a chroot() while
-#	initializing.  This also causes Squid to fully drop root
-#	privileges after initializing.  This means, for example, if you
-#	use a HTTP port less than 1024 and try to reconfigure, you may
-#	get an error saying that Squid can not open the port.
-#Default:
-# none
-
-#  TAG: balance_on_multiple_ip
-#	Modern IP resolvers in squid sort lookup results by preferred access.
-#	By default squid will use these IP in order and only rotates to
-#	the next listed when the most preffered fails.
-#
-#	Some load balancing servers based on round robin DNS have been
-#	found not to preserve user session state across requests
-#	to different IP addresses.
-#
-#	Enabling this directive Squid rotates IP's per request.
-#Default:
-# balance_on_multiple_ip off
-
-#  TAG: pipeline_prefetch
-#	HTTP clients may send a pipeline of 1+N requests to Squid using a
-#	single connection, without waiting for Squid to respond to the first
-#	of those requests. This option limits the number of concurrent
-#	requests Squid will try to handle in parallel. If set to N, Squid
-#	will try to receive and process up to 1+N requests on the same
-#	connection concurrently.
-#
-#	Defaults to 0 (off) for bandwidth management and access logging
-#	reasons.
-#
-#	NOTE: pipelining requires persistent connections to clients.
-#
-#	WARNING: pipelining breaks NTLM and Negotiate/Kerberos authentication.
-#Default:
-# Do not pre-parse pipelined requests.
-
-#  TAG: high_response_time_warning	(msec)
-#	If the one-minute median response time exceeds this value,
-#	Squid prints a WARNING with debug level 0 to get the
-#	administrators attention.  The value is in milliseconds.
-#Default:
-# disabled.
-
-#  TAG: high_page_fault_warning
-#	If the one-minute average page fault rate exceeds this
-#	value, Squid prints a WARNING with debug level 0 to get
-#	the administrators attention.  The value is in page faults
-#	per second.
-#Default:
-# disabled.
-
-#  TAG: high_memory_warning
-# Note: This option is only available if Squid is rebuilt with the
-#       GNU Malloc with mstats()
-#
-#	If the memory usage (as determined by gnumalloc, if available and used)
-#	exceeds	this amount, Squid prints a WARNING with debug level 0 to get
-#	the administrators attention.
-#Default:
-# disabled.
-
-#  TAG: sleep_after_fork	(microseconds)
-#	When this is set to a non-zero value, the main Squid process
-#	sleeps the specified number of microseconds after a fork()
-#	system call. This sleep may help the situation where your
-#	system reports fork() failures due to lack of (virtual)
-#	memory. Note, however, if you have a lot of child
-#	processes, these sleep delays will add up and your
-#	Squid will not service requests for some amount of time
-#	until all the child processes have been started.
-#	On Windows value less then 1000 (1 milliseconds) are
-#	rounded to 1000.
-#Default:
-# sleep_after_fork 0
-
-#  TAG: windows_ipaddrchangemonitor	on|off
-# Note: This option is only available if Squid is rebuilt with the
-#       MS Windows
-#
-#	On Windows Squid by default will monitor IP address changes and will 
-#	reconfigure itself after any detected event. This is very useful for
-#	proxies connected to internet with dial-up interfaces.
-#	In some cases (a Proxy server acting as VPN gateway is one) it could be
-#	desiderable to disable this behaviour setting this to 'off'.
-#	Note: after changing this, Squid service must be restarted.
-#Default:
-# windows_ipaddrchangemonitor on
-
-#  TAG: eui_lookup
-#	Whether to lookup the EUI or MAC address of a connected client.
-#Default:
-# eui_lookup on
-
-#  TAG: max_filedescriptors
-#	Reduce the maximum number of filedescriptors supported below
-#	the usual operating system defaults.
-#
-#	Remove from squid.conf to inherit the current ulimit setting.
-#
-#	Note: Changing this requires a restart of Squid. Also
-#	not all I/O types supports large values (eg on Windows).
-#Default:
-# Use operating system limits set by ulimit.
-