Re: swapouts but no hits

I suppose I probably should have mentioned the version of Squid I am
running: 2.1-PATCH2

Adam Firester wrote:
>
> I was hoping that someone might be able to help me out with this one:
>
> I was stuck in a situation where nothing would get swapped out to disk.
> I checked my httpd.conf on my webserver (app), and realized that
> CacheNegotiatedDocs was not set. So after setting it and restarting
> Apache (and restarting Squid for good measure), it seems as though Squid
> is swapping out image files to disk (at least that's what store.log now
> reports.
> However, I still get nothing but TCP_MISS in my access.log.
>
> Attached is a copy of my squid.conf and a snippit of the access.log.
> Does it look as though this is a Squid configuration problem? If not,
> any clue as to if there may still me an issue with the Apache
> configuration?
>
> Any help would be greatly appreciated.
>
> --
> Adam Firester
> UNIX Systems Administrator
>
> ------------------------------------------------------------------------
>
> # WELCOME TO SQUID 2
> # ------------------
> #
> # This is the default Squid configuration file. You may wish
> # to look at http://cache.is.co.za/squid/ for documentation,
> # or the Squid home page (http://squid.nlanr.net/) for the FAQ.
> #
>
> # NETWORK OPTIONS
> # -----------------------------------------------------------------------------
>
> # TAG: http_port
> # The port number where Squid will listen for HTTP client
> # requests. Default is 3128, for httpd-accel mode use port 80.
> # May be overridden with -a on the command line.
> #
> # You may specify multiple ports here, but they MUST all be on
> # a single line.
> #
> http_port 80
>
> # TAG: icp_port
> # The port number where Squid sends and receives ICP requests to
> # and from neighbor caches. Default is 3130. To disable use
> # "0". May be overridden with -u on the command line.
> #
> #icp_port 3130
>
> # TAG: htcp_port
> # The port number where Squid sends and receives ICP requests to
> # and from neighbor caches. Default is 4827. To disable use
> # "0".
> #
> #htcp_port 4827
>
> # TAG: mcast_groups
> # This tag specifies a list of multicast groups which your server
> # should join to receive multicasted ICP requests.
> #
> # NOTE! Be very careful what you put here! Be sure you
> # understand the difference between an ICP _query_ and an ICP
> # _reply_. This option is to be set only if you want to RECEIVE
> # multicast queries. Do NOT set this option to SEND multicast
> # ICP (use cache_peer for that). ICP replies are always sent via
> # unicast, so this option does not affect whether or not you will
> # receive replies from multicast group members.
> #
> # You must be very careful to NOT use a multicast address which
> # is already in use by another group of caches. NLANR has been
> # assigned a block of multicast address space for use in Web
> # Caching. Plese write to us at nlanr-cache@nlanr.net to receive
> # an address for your own use.
> #
> # If you are unsure about multicast, please read the Multicast
> # chapter in the Squid FAQ (http://squid.nlanr.net/Squid/FAQ/).
> #
> # Usage: mcast_groups 239.128.16.128 224.0.1.20
> #
> # By default, Squid doesn't listen on any multicast groups.
> #
> #mcast_groups 239.128.16.128
>
> # TAG: tcp_incoming_address
> # TAG: tcp_outgoing_address
> # TAG: udp_incoming_address
> # TAG: udp_outgoing_address
> # Usage: tcp_incoming_address 10.20.30.40
> # udp_outgoing_address fully.qualified.domain.name
> #
> # tcp_incoming_address is used for the HTTP socket which accepts
> # connections from clients and other caches.
> # tcp_outgoing_address is used for connections made to remote
> # servers and other caches.
> # udp_incoming_address is used for the ICP socket receiving packets
> # from other caches.
> # udp_outgoing_address is used for ICP packets sent out to other
> # caches.
> #
> # The default behaviour is to not bind to any specific address.
> #
> # NOTE, udp_incoming_address and udp_outgoing_address can not
> # have the same value (unless it is 0.0.0.0) since they both use
> # port 3130.
> #
> #tcp_incoming_address 0.0.0.0
> #tcp_outgoing_address 0.0.0.0
> #udp_incoming_address 0.0.0.0
> #udp_outgoing_address 0.0.0.0
>
> # OPTIONS WHICH AFFECT THE NEIGHBOR SELECTION ALGORITHM
> # -----------------------------------------------------------------------------
>
> # TAG: cache_peer
> # To specify other caches in a hierarchy, use the format:
> #
> # hostname type http_port icp_port
> #
> # For example,
> #
> # # proxy icp
> # # hostname type port port options
> # # -------------------- -------- ----- ----- -----------
> # cache_peer parent.foo.net parent 3128 3130 [proxy-only]
> # cache_peer sib1.foo.net sibling 3128 3130 [proxy-only]
> # cache_peer sib2.foo.net sibling 3128 3130 [proxy-only]
> #
> # type: either 'parent', 'sibling', or 'multicast'.
> #
> # proxy_port: The port number where the cache listens for proxy
> # requests.
> #
> # icp_port: Used for querying neighbor caches about
> # objects. To have a non-ICP neighbor
> # specify '7' for the ICP port and make sure the
> # neighbor machine has the UDP echo port
> # enabled in its /etc/inetd.conf file.
> #
> # options: proxy-only
> # weight=n
> # ttl=n
> # no-query
> # default
> # round-robin
> # multicast-responder
> # closest-only
> # no-digest
> # no-netdb-exchange
> # no-delay
> # login=user:password
> #
> # use 'proxy-only' to specify that objects fetched
> # from this cache should not be saved locally.
> #
> # use 'weight=n' to specify a weighted parent.
> # The weight must be an integer. The default weight
> # is 1, larger weights are favored more.
> #
> # use 'ttl=n' to specify a IP multicast TTL to use
> # when sending an ICP request to this address.
> # Only useful when sending to a multicast group.
> # Because we don't accept ICP replies from random
> # hosts, you must configure other group members as
> # peers with the 'multicast-responder' option below.
> #
> # use 'no-query' to NOT send ICP queries to this
> # neighbor.
> #
> # use 'default' if this is a parent cache which can
> # be used as a "last-resort." You should probably
> # only use 'default' in situations where you cannot
> # use ICP with your parent cache(s).
> #
> # use 'round-robin' to define a set of parents which
> # should be used in a round-robin fashion in the
> # absence of any ICP queries.
> #
> # 'multicast-responder' indicates that the named peer
> # is a member of a multicast group. ICP queries will
> # not be sent directly to the peer, but ICP replies
> # will be accepted from it.
> #
> # 'closest-only' indicates that, for ICP_OP_MISS
> # replies, we'll only forward CLOSEST_PARENT_MISSes
> # and never FIRST_PARENT_MISSes.
> #
> # use 'no-digest' to NOT request cache digests from
> # this neighbor.
> #
> # 'no-netdb-exchange' disables requesting ICMP
> # RTT database (NetDB) from the neighbor.
> #
> # use 'no-delay' to prevent access to this neighbor
> # from influencing the delay pools.
> #
> # use 'login=user:password' if this is a personal/workgroup
> # proxy and your parent requires proxy authentication.
> #
> # NOTE: non-ICP neighbors must be specified as 'parent'.
> #
> #cache_peer hostname type 3128 3130
>
> # 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 that the cache will be queried for objects
> # NOT in that domain.
> #
> # NOTE: * Any number of domains may be given for a cache-host,
> # either on the same or separate lines.
> # * When multiple domains are given for a particular
> # cache-host, the first matched domain is applied.
> # * Cache hosts with no domain restrictions are queried
> # for all requests.
> # * There are no defaults.
> # * There is also a 'cache_peer_access' tag in the ACL
> # section.
>
> # TAG: neighbor_type_domain
> # usage: neighbor_type_domain parent|sibling domain domain ...
> #
> # Modifying the neighbor type for specific domains is now
> # possible. You can treat some domains differently than the the
> # default neighbor type specified on the 'cache_peer' line.
> # Normally it should only be necessary to list domains which
> # should be treated differently because the default neighbor type
> # applies for hostnames which do not match domains listed here.
> #
> #EXAMPLE:
> # cache_peer parent cache.foo.org 3128 3130
> # neighbor_type_domain cache.foo.org sibling .com .net
> # neighbor_type_domain cache.foo.org sibling .au .de
>
> # 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
> #
> #icp_query_timeout 0
>
> # 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.
> #
> #mcast_icp_query_timeout 2000
>
> # 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.
> #
> #dead_peer_timeout 10 seconds
>
> # TAG: hierarchy_stoplist
> # A list of words which, if found in a URL, cause the object to
> # be handled directly by this cache. In other words, use this
> # to not query neighbor caches for certain objects. You may
> # list this option multiple times.
> #
> # The default is to directly fetch URLs containing 'cgi-bin' or '?'.
> #
> hierarchy_stoplist cgi-bin ? include
>
> # TAG: no_cache
> # A list of ACL elements which, if matched, cause the reply to
> # immediately removed from the cache. In other words, use this
> # to force certain objects to never be cached.
> #
> # You must use the word 'DENY' to indicate the ACL names which should
> # NOT be cached.
> #
> # There is no default. We recommend you uncomment the following
> # two lines.
> #
> #acl QUERY urlpath_regex cgi-bin \? include
> #no_cache deny QUERY
> acl IMAGES urlpath_regex \.gif$ \.jpg$ \.GIF$ \.JPG$
> no_cache deny !IMAGES
>
> # OPTIONS WHICH AFFECT THE CACHE SIZE
> # -----------------------------------------------------------------------------
>
> # TAG: cache_mem (bytes)
> # NOTE: THIS PARAMETER DOES NOT SPECIFY THE MAXIMUM PROCESS
> # SIZE. IT PLACES A LIMIT ON ONE ASPECT OF SQUID'S MEMORY
> # USAGE. SQUID USES MEMORY FOR OTHER THINGS AS WELL.
> # YOUR PROCESS WILL PROBABLY BECOME TWICE OR THREE TIMES
> # BIGGER THAN THE VALUE YOU PUT HERE
> #
> # 'cache_mem' specifies the ideal amount of memory to be used
> # for:
> # * In-Transit objects
> # * Hot Objects
> # * Negative-Cached objects
> #
> # Data for these objects are stored in 4 KB blocks. This
> # parameter specifies the ideal upper limit on the total size of
> # 4 KB blocks allocated. In-Transit objects take the highest
> # priority.
> #
> # In-transit objects have priority over the others. When
> # additional space is needed for incoming data, negative-cached
> # and hot objects will be released. In other words, the
> # negative-cached and hot objects will fill up any unused space
> # not needed for in-transit objects.
> #
> # If circumstances require, this limit will be exceeded.
> # Specifically, if your incoming request rate requires more than
> # 'cache_mem' of memory to hold in-transit objects, Squid will
> # exceed this limit to satisfy the new requests. When the load
> # decreases, blocks will be freed until the high-water mark is
> # reached. Thereafter, blocks will be used to store hot
> # objects.
> #
> # The values of cache_mem_low and cache_mem_high (below) can be
> # used to tune the use of the memory pool. When the high mark is
> # reached, in-transit and hot objects will be released to clear
> # space. When an object transfer is completed, it will remain in
> # memory only if the current memory usage is below the low water
> # mark.
> #
> # The default is 8 Megabytes.
> #
> cache_mem 64 MB
>
> # TAG: cache_swap_low (percent, 0-100)
> # TAG: cache_swap_high (percent, 0-100)
> # The low- and high-water marks for cache LRU replacement. LRU
> # replacement begins when the high-water mark is reached and ends
> # when enough objects have been removed and the low-water mark is
> # reached. Defaults are 90% and 95%. If you have a large cache, 5%
> # could be hundreds of MB. If this is the case you may wish to
> # set these numbers closer together.
> #
> #cache_swap_low 90
> #cache_swap_high 95
>
> # TAG: cache_mem_low (in percent, 0-100)
> # TAG: cache_mem_high (in percent, 0-100)
> # The low- and high-water mark for cache memory storage. When
> # the amount of RAM used by the hot-object RAM cache reaches this
> # point, the cache starts throwing objects out of the RAM cache
> # (but they remain on disk). Defaults are 75% and 90%.
> #
> #cache_mem_low 75
> #cache_mem_high 90
>
> # TAG: maximum_object_size (bytes)
> # Objects larger than this size will NOT be saved on disk. The
> # value is specified in kilobytes, and the default is 4MB. If
> # you wish to get a high BYTES hit ratio, you should probably
> # increase this (one 32 MB object hit counts for 3200 10KB
> # hits). If you wish to increase speed more than your want to
> # save bandwidth you should leave this low.
> #
> maximum_object_size 40960 KB
>
> # TAG: ipcache_size (number of entries)
> # TAG: ipcache_low (percent)
> # TAG: ipcache_high (percent)
> # The size, low-, and high-water marks for the IP cache.
> #
> ipcache_size 1024
> ipcache_low 80
> ipcache_high 95
>
> # TAG: fqdncache_size (number of entries)
> # Maximum number of FQDN cache entries.
> #fqdncache_size 1024
>
> # LOGFILE PATHNAMES AND CACHE DIRECTORIES
> # -----------------------------------------------------------------------------
>
> # TAG: cache_dir
> # Usage:
> #
> # cache_dir Directory-Name Mbytes Level-1 Level2
> #
> # You can specify multiple cache_dir lines to spread the
> # cache among different disk partitions.
> #
> # 'Directory' is a top-level directory where cache swap
> # files will be stored. If you want to use an entire disk
> # for caching, then this can be the mount-point directory.
> # The directory must exist and be writable by the Squid
> # process. Squid will NOT create this directory for you.
> #
> # If no 'cache_dir' lines are specified, the following
> # default will be used: /usr/local/squid-2.1.PATCH2/cache.
> #
> # 'Mbytes' is the amount of disk space (MB) to use under this
> # directory. The default is 100 MB. Change this to suit your
> # configuration.
> #
> # 'Level-1' is the number of first-level subdirectories which
> # will be created under the 'Directory'. The default is 16.
> #
> # 'Level-2' is the number of second-level subdirectories which
> # will be created under each first-level directory. The default
> # is 256.
> #
> cache_dir /var/local/squid/cache 6144 16 256
>
> # TAG: cache_access_log
> # Logs the client request activity. Contains an entry for
> # every HTTP and ICP request received.
> #
> cache_access_log /var/local/squid/logs/access.log
>
> # TAG: cache_log
> # Cache logging file. This is where general information about
> # your cache's behaviour goes. You can increase the amount of data
> # logged to this file with the "debug_options" tag below.
> #
> cache_log /var/local/squid/logs/cache.log
>
> # 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. To disable, enter "none". There are
> # not really utilities to analyse this data, so you can safely
> # disable it.
> #
> cache_store_log /var/local/squid/logs/store.log
>
> # TAG: cache_swap_log
> # Location for the cache "swap.log." This log file holds the
> # metadata of objects saved on disk. It is used to rebuild the
> # cache during startup. Normally this file resides in the first
> # 'cache_dir' directory, but you may specify an alternate
> # pathname here. Note you must give a full filename, not just
> # a directory. Since this is the index for the whole object
> # list you CANNOT periodically rotate it!
> #
> cache_swap_log /var/local/squid/logs/cache.log
>
> # TAG: emulate_httpd_log on|off
> # The Cache can emulate the log file format which many 'httpd'
> # programs use. To disable/enable this emulation, set
> # emulate_httpd_log to 'off' or 'on'. The default
> # is to use the native log format since it includes useful
> # information that Squid-specific log analysers use.
> #
> emulate_httpd_log off
>
> # TAG: mime_table
> # Pathname to Squid's MIME table. You shouldn't need to change
> # this, but the default file contains examples and formatting
> # information if you do.
> #
> mime_table /usr/local/squid/etc/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'.
> #
> log_mime_hdrs on
>
> # TAG: useragent_log
> # If configured with the "--enable-useragent_log" configure
> # option, Squid will write the User-Agent field from HTTP
> # requests to the filename specified here. By default
> # useragent_log is disabled.
> #
> #useragent_log none
>
> # TAG: pid_filename
> # A filename to write the process-id to. To disable, enter "none".
> #
> pid_filename /var/local/squid/squid.pid
>
> # 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. We recommend normally running with
> # "ALL,1".
> #
> debug_options ALL,1 47,9
>
> # TAG: ident_lookup on|off
> # If you wish to make an RFC931/ident lookup of the client
> # username for each connection, enable this. It is off by
> # default.
> #
> ident_lookup off
>
> # TAG: log_fqdn on|off
> # Turn this on if you wish to log fully qualified domain names
> # in the access.log. To do this Squid does a DNS lookup of all
> # IP's connecting to it. This can (in some situations) increase
> # latency, which makes your cache seem slower for interactive
> # browsing.
> #
> log_fqdn off
>
> # 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'.
> #
> client_netmask 255.255.255.0
>
> # OPTIONS FOR EXTERNAL SUPPORT PROGRAMS
> # -----------------------------------------------------------------------------
>
> # 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
> # resonable for your domain, like wwwuser@somewhere.net
> #
> # The reason why this is domainless by default is that the
> # request can be made on the behalf of a user in any domain,
> # depending on how the cache is used.
> # Some ftp server also validate that the email address is valid
> # (for example perl.com).
> #
> #ftp_user Squid@
>
> # TAG: ftp_list_width
> # Sets the width of ftp listings. This should be set to fit in
> # the width of a standard browser. Setting this too small
> # can cut off long filenames when browsing ftp sites.
> #
> #ftp_list_width 32
>
> # TAG: cache_dns_program
> # Specify the location of the executable for dnslookup process.
> #
> cache_dns_program /usr/local/squid/bin/dnsserver
>
> # TAG: dns_children
> # The number of processes spawn to service DNS name lookups.
> # For heavily loaded caches on large servers, you should
> # probably increase this value to at least 10. The maximum
> # is 32. The default is 5.
> #
> # To disable dnsservers, set this to 0. NOTE, this is very
> # strongly discouraged. If you disable dnsservers your Squid
> # process will BLOCK on DNS lookups!
> #
> dns_children 10
>
> # TAG: dns_defnames on|off
> # Normally the 'dnsserver' disables the RES_DEFNAMES resolver
> # option (see res_init(3)). This prevents caches in a hierarchy
> # from interpreting single-component hostnames locally. To allow
> # dnsserver to handle single-component names, enable this
> # option.
> #
> dns_defnames off
>
> # 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.
> #
> # Example: dns_nameservers 10.0.0.1 192.172.0.4
> #
> #dns_nameservers none
>
> # TAG: unlinkd_program
> # Specify the location of the executable for file deletion process.
> # This isn't needed if you are using async-io since it's handled by
> # a thread.
> #
> unlinkd_program /usr/local/squid/bin/unlinkd
>
> # TAG: pinger_program
> # Specify the location of the executable for the pinger process.
> # This is only useful if you configured Squid (during compliation)
> # with the '--enable-icmp' option.
> #
> pinger_program /usr/local/squid/bin/pinger
>
> # TAG: redirect_program
> # Specify the location of the executable for the URL redirector.
> # Since they can perform almost any function there isn't one included.
> # See the Release-Notes for information on how to write one.
> # By default, a redirector is not used.
> #
> #redirect_program none
>
> # TAG: redirect_children
> # The number of redirector processes to spawn. If you start
> # too few Squid will have to wait for them to process a backlog of
> # URLs, slowing it down. If you start too many they will use RAM
> # and other system resources.
> #
> #redirect_children 5
>
> # TAG: redirect_rewrites_host_header
> # By default Squid rewrites any Host: header in redirected requests.
> # If you are running a accelerator then this may not be a wanted effect
> # of a redirector.
> #redirect_rewrites_host_header on
>
> # TAG: authenticate_program
> # Specify the command for the external authenticator. Such a
> # program reads a line containing "username password" and replies
> # "OK" or "ERR" in an endless loop. If you use an authenticator,
> # make sure you have 1 acl of type proxy_auth. By default, the
> # authenticator_program is not used.
> #
> # If you want to use the traditional proxy authentication,
> # jump over to the ../auth_modules/NCSA directory and
> # type:
> # % make
> # % make install
> #
> # Then, set this line to something like
> #
> # authenticate_program /usr/local/squid-2.1.PATCH2/bin/ncsa_auth /usr/local/squid-2.1.PATCH2/etc/passwd
> #
> #authenticate_program none
>
> # TAG: authenticate_children
> # The number of authenticator processes to spawn (default 5). If you
> # start too few Squid will have to wait for them to process a backlog
> # of usercode/password verifications, slowing it down. When password
> # verifications are done via a (slow) network you are likely to need
> # lots of authenticator processes.
> #
> #authenticate_children 5
>
> # TAG: authenticate_ttl
> # The time a checked username/password combination remains cached
> # (default 3600). If a wrong password is given for a cached user,
> # the user gets removed from the username/password cache forcing
> # a revalidation.
> #
> #authenticate_ttl 3600
>
> # OPTIONS FOR TUNING THE CACHE
> # -----------------------------------------------------------------------------
>
> # TAG: wais_relay_host
> # TAG: wais_relay_port
> # Relay WAIS request to host (1st arg) at port (2 arg).
> #
> #wais_relay_host localhost
> #wais_relay_port 8000
>
> # TAG: request_size (KB)
> # Maximum allowed request size in kilobytes. If people are using
> # POST to upload files, then set this to the largest acceptable
> # filesize plus a few extra kbytes.
> #
> #request_size 100 KB
>
> # 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 and max are specified in MINUTES.
> # percent is an integer number.
> #
> # options: override-expire
> # override-lastmod
> # reload-into-ims
> # ignore-reload
> #
> # override-expire enforces min age even if the server
> # sent a Expires: header. Doing this VIOLATES the HTTP
> # standard. Enabling this feature could make you liable
> # for problems which it causes.
> #
> # override-lastmod enforces min age even on objects
> # that was modified recently.
> #
> # reload-into-ims changes client no-cache or ``reload''
> # to If-Modified-Since requests. Doing this VIOLATES the
> # HTTP standard. Enabling this feature could make you
> # liable for problems which it causes.
> #
> # ignore-reload ignores a client no-cache or ``reload''
> # header. Doing this VIOLATES the HTTP standard. Enabling
> # this feature could make you liable for problems which
> # it causes.
> #
> # Please see the file doc/Release-Notes-1.1.txt for a full
> # description of Squid's refresh algorithm. Basically a
> # cached object is: (the order is changed from 1.1.X)
> #
> # STALE if age > max
> # FRESH if expires < now, else STALE
> # FRESH if lm-factor < percent, else STALE
> # FRESH if age < min
> # else STALE
> #
> # The refresh_pattern lines are checked in the order listed here.
> # The first entry which matches is used. If none of the entries
> # match, then the default will be used.
> #
> #Default:
> #refresh_pattern . 0 20% 4320
>
> # TAG: reference_age
> # As a part of normal operation, Squid performs Least Recently
> # Used removal of cached objects. The LRU age for removal is
> # computed dynamically, based on the amount of disk space in
> # use. The dynamic value can be seen in the Cache Manager 'info'
> # output.
> #
> # The 'reference_age' parameter defines the maximum LRU age. For
> # example, setting reference_age to '1 week' will cause objects
> # to be removed if they have not been accessed for a week or
> # more. The default value is one month.
> #
> # Specify a number here, followed by units of time. For example:
> # 1 week
> # 3.5 days
> # 4 months
> # 2.2 hours
> #
> reference_age 1 week
>
> # TAG: quick_abort_min (KB)
> # TAG: quick_abort_max (KB)
> # TAG: quick_abort_pct (percent)
> # The cache can be configured to continue downloading aborted
> # requests. This may be undesirable on slow (e.g. SLIP) links
> # and/or very busy caches. Impatient users may tie up file
> # descriptors and bandwidth by repeatedly requesting and
> # immediately aborting downloads.
> #
> # When the user aborts a request, Squid will check the
> # quick_abort values to the amount of data transfered until
> # then.
> #
> # If the transfer has less than 'quick_abort_min' KB remaining,
> # it will finish the retrieval. Setting 'quick_abort_min' to -1
> # will disable the quick_abort feature.
> #
> # If 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.
> #
> #quick_abort_min 16 KB
> #quick_abort_max 16 KB
> #quick_abort_pct 95
>
> # TAG: negative_ttl time-units
> # Time-to-Live (TTL) for failed requests. Certain types of
> # failures (such as "connection refused" and "404 Not Found") are
> # negatively-cached for a configurable amount of time. The
> # default is 5 minutes. Note that this is different from
> # negative caching of DNS lookups.
> #
> #negative_ttl 5 minutes
>
> # TAG: positive_dns_ttl time-units
> # Time-to-Live (TTL) for positive caching of successful DNS lookups.
> # Default is 6 hours (360 minutes). If you want to minimize the
> # use of Squid's ipcache, set this to 1, not 0.
> #
> #positive_dns_ttl 6 hours
>
> # TAG: negative_dns_ttl time-units
> # Time-to-Live (TTL) for negative caching of failed DNS lookups.
> #
> #negative_dns_ttl 5 minutes
>
> # TAG: range_offset_limit (bytes)
> # Sets a upper limit on how far into the the file a Range request
> # may be to cause Squid to prefetch the whole file. If beyond this
> # limit then 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.
> #
> # A value of -1 causes Squid to always fetch the object from the
> # beginning so that it may cache the result. (2.0 style)
> #
> # A value of 0 causes Squid to never fetch more than the client
> # client requested. (default)
> #
> #range_offset_limit 0 KB
>
> # TIMEOUTS
> # -----------------------------------------------------------------------------
>
> # TAG: connect_timeout time-units
> # Some systems (notably Linux) can not be relied upon to properly
> # time out connect(2) requests. Therefore the Squid process
> # enforces its own timeout on server connections. This parameter
> # specifies how long to wait for the connect to complete. The
> # default is two minutes (120 seconds).
> #
> connect_timeout 120 seconds
>
> # TAG: siteselect_timeout time-units
> # For URN to multiple URL's URL selection
> #
> #siteselect_timeout 4 seconds
>
> # TAG: read_timeout time-units
> # The read_timeout is applied on server-side connections. After
> # each successful read(), the timeout will be extended by this
> # amount. If no data is read again after this amount of time,
> # the request is aborted and logged with ERR_READ_TIMEOUT. The
> # default is 15 minutes.
> #
> read_timeout 3 minutes
>
> # TAG: request_timeout
> # How long to wait for an HTTP request after connection
> # establishment. For persistent connections, wait this long
> # after the previous request completes.
> #
> request_timeout 20 seconds
>
> # TAG: client_lifetime time-units
> # The maximum amount of time that a client (browser) is allowed to
> # remain connected to the cache process. This protects the Cache
> # from having alot of sockets (and hence file descriptors) tied up
> # in a CLOSE_WAIT state from remote clients that go away without
> # properly shutting down (either because of a network failure or
> # because of a poor client implementation). The default is one
> # day, 1440 minutes.
> #
> # NOTE: The default value is intended to be much larger than any
> # client would ever need to be connected to your cache. You
> # should probably change client_lifetime only as a last resort.
> # If you seem to have many client connections tying up
> # filedescriptors, we recommend first tuning the read_timeout,
> # request_timeout, pconn_timeout and quick_abort values.
> #
> #client_lifetime 1 day
>
> # 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, half-closed client
> # connections are kept open until a read(2) or write(2) on the
> # socket returns an error. Change this option to 'off' and Squid
> # will immediately close client connections when read(2) returns
> # "no more data to read."
> #
> #half_closed_clients on
>
> # TAG: pconn_timeout
> # Timeout for idle persistent connections to servers and other
> # proxies.
> #pconn_timeout 120 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.
> #
> shutdown_lifetime 10 seconds
>
> # ACCESS CONTROLS
> # -----------------------------------------------------------------------------
>
> # TAG: acl
> # Defining an Access List
> #
> # acl aclname acltype string1 ...
> # acl aclname acltype "file" ...
> #
> # when using "file", the file should contain one item per line
> #
> # acltype is one of src dst srcdomain dstdomain url_pattern
> # urlpath_pattern time port proto method browser user
> #
> # acl aclname src ip-address/netmask ... (clients IP address)
> # acl aclname src addr1-addr2/netmask ... (range of addresses)
> # acl aclname dst ip-address/netmask ... (URL host's IP address)
> #
> # acl aclname srcdomain foo.com ... # reverse lookup, client IP
> # acl aclname dstdomain foo.com ... # Destination server from URL
> # acl aclname srcdom_regex xxx ... # regex matching client name
> # acl aclname dstdom_regex xxx ... # regex matching server
> # # For dstdomain and dstdom_regex a reverse lookup is tried if a IP
> # # based URL is used. The name "none" is used if the reverse lookup
> # # fails.
> #
> # acl aclname time [day-abbrevs] [h1:m1-h2:m2]
> # day-abbrevs:
> # S - Sunday
> # M - Monday
> # T - Tuesday
> # W - Wednesday
> # H - Thursday
> # F - Friday
> # A - Saturday
> # h1:m1 must be less than h2:m2
> # acl aclname url_regex ^http:// ... # regex matching on whole URL
> # acl aclname urlpath_regex \.gif$ ... # regex matching on URL path
> # acl aclname port 80 70 21 ...
> # acl aclname port 0-1024 ... # ranges allowed
> # acl aclname proto HTTP FTP ...
> # acl aclname method GET POST ...
> # acl aclname browser regexp
> # acl aclname ident username ...
> # # string match on ident output.
> # # use REQUIRED to accept any non-null ident.
> # acl aclname src_as number ...
> # acl aclname dst_as number ...
> # # Except for access control, AS numbers can be used for
> # # routing of requests to specific caches. Here's an
> # # example for routing all requests for AS#1241 and only
> # # those to mycache.mydomain.net:
> # # acl asexample dst_as 1241
> # # cache_peer_access mycache.mydomain.net allow asexample
> # # cache_peer_access mycache_mydomain.net deny all
> #
> # acl aclname proxy_auth username ...
> # # list of valid usernames
> # # use REQUIRED to accept any valid username.
> # #
> # # 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
> # # authenticate_program).
> # #
> # # WARNING: proxy_auth can't be used in a transparent proxy. It
> # # collides with any authentication done by origin servers. It may
> # # seem like it works at first, but it doesn't.
> #
> #
> #Examples:
> #acl myexample dst_as 1241
> #acl password proxy_auth 300
> #
> #Defaults:
> acl all src 0.0.0.0/0.0.0.0
> acl manager proto cache_object
> acl localhost src 127.0.0.1/255.255.255.255
> acl skunk src 207.117.162.0-207.117.162.127/255.255.255.128
> #acl SSL_ports port 443 563
> #acl Safe_ports port 80 21 443 563 70 210 1025-65535
> acl CONNECT method CONNECT
>
> #acl internal src 207.25.53.0/255.255.255.0 localhost
>
> acl website dst 209.67.42.0/255.255.255.0 192.168.103.0/255.255.255.0
>
> #CHANGEME
> # Try to prevent looping back to myself.
> #acl myself dst 192.168.103.12
>
> # TAG: http_access
> # Allowing or Denying access based on defined access lists
> #
> # Access to the HTTP port:
> # http_access allow|deny [!]aclname ...
> #
> # Access to the ICP port:
> # icp_access allow|deny [!]aclname ...
> #
> # NOTE on default values:
> #
> # If there are no "access" lines present, the default is to allow
> # the request.
> #
> # If none of the "access" lines cause a match, the default is the
> # opposite of the last line in the list. If the last line was
> # deny, then the default is allow. Conversely, if the last line
> # is allow, the default will be deny. For these reasons, it is a
> # good idea to have an "deny all" or "allow all" entry at the end
> # of your access lists to avoid potential confusion.
> #
> #Default configuration:
> http_access allow manager localhost skunk
> #http_access deny !Safe_ports
> #http_access deny CONNECT !SSL_ports
> #
> # INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
> #
> # Deny access to servers that I don't want to cache for
> http_access deny !website
>
> # Try to prevent looping.
> #http_access deny myself
>
> # Allow everything else
> http_access allow all
>
> # TAG: icp_access
> # Reply to all ICP queries we receive
> #
> icp_access deny all
>
> # TAG: miss_access
> # Use to force your neighbors to use you as a sibling instead of
> # a parent. For example:
> #
> # acl localclients src 172.16.0.0/16
> # miss_access allow localclients
> # miss_access deny !localclients
> #
> # This means that only your local clients are allowed to fetch
> # MISSES and all other clients can only fetch HITS.
> #
> # By default, allow all clients who passed the http_access rules
> # to fetch MISSES from us.
> #miss_access allow all
>
> # TAG: cache_peer_access
> # Similar to 'cache_peer_domain' but provides more flexibility by
> # using ACL elements.
> #
> # cache_peer_access cache-host allow|deny [!]aclname ...
> #
> # The syntax is identical to 'http_access' and the other lists of
> # ACL elements. See the comments for 'http_access' below, or
> # the Squid FAQ (http://squid.nlanr.net/Squid/FAQ/FAQ-10.html).
>
> # TAG: proxy_auth_realm
> # Specifies the realm name which is to be reported to the client for
> # proxy authentication (part of the text the user will see when
> # prompted their username and password).
> #
> #proxy_auth_realm Squid proxy-caching web server
>
> # ADMINISTRATIVE PARAMETERS
> # -----------------------------------------------------------------------------
>
> # TAG: cache_mgr
> # Email-address of local cache manager who will receive
> # mail if the cache dies. The default is "webmaster."
> #
> cache_mgr squid@skunk.org
>
> # TAG: cache_effective_user
> # TAG: cache_effective_group
> #
> # If the cache is run as root, it will change its effective/real
> # UID/GID to the UID/GID specified below. The default is to
> # change to UID to nobody and GID to nogroup.
> #
> # If Squid is not started as root, the default is to keep the
> # current UID/GID. Note that if Squid is not started as root then
> # you cannot set http_port to a value lower than 1024.
> #
> cache_effective_user squid
> cache_effective_group cache
>
> # TAG: visible_hostname
> # If you want to present a special hostname in error messages, etc,
> # then define this. Otherwise, the return value of gethostname()
> # will be used. If you have multiple caches in a cluster and
> # get errors about IP-forwarding you must set them to have individual
> # names with this setting.
> #
> #visible_hostname www.skunk.org
>
> # TAG: unique_hostname
> # If you want to have multiple machines with the same
> # 'visible_hostname' then you must give each machine a different
> # 'unique_hostname' so that forwarding loops can be detected.
> #
> unique_hostname cache1.staging.skunk.org
>
> # OPTIONS FOR THE CACHE REGISTRATION SERVICE
> # -----------------------------------------------------------------------------
> #
> # This section contains parameters for the (optional) cache
> # announcement service. This service is provided to help
> # cache administrators locate one another in order to join or
> # create cache hierarchies.
> #
> # An 'announcement' message is sent (via UDP) to the registration
> # service by Squid. By default, the annoucement message is NOT
> # SENT unless you enable it with 'announce_period' below.
> #
> # The announcement message includes your hostname, plus the
> # following information from this configuration file:
> #
> # http_port
> # icp_port
> # cache_mgr
> #
> # All current information is processed regularly and made
> # available on the Web at http://ircache.nlanr.net/Cache/Tracker/.
>
> # TAG: announce_period
> # This is how frequently to send cache announcements. The
> # default is `0' which disables sending the announcement
> # messages.
> #
> # To enable announcing your cache, just uncomment the line
> # below.
> #
> #announce_period 1 day
>
> # TAG: announce_host
> # TAG: announce_file
> # TAG: announce_port
> # announce_host and announce_port set the hostname and port
> # number where the registration message will be sent.
> #
> # Hostname will default to 'tracker.ircache.net' and port will
> # default default to 3131. If the 'filename' argument is given,
> # the contents of that file will be included in the announce
> # message.
> #
> #announce_host tracker.ircache.net
> #announce_port 3131
>
> # HTTPD-ACCELERATOR OPTIONS
> # -----------------------------------------------------------------------------
>
> # TAG: httpd_accel_host
> # TAG: httpd_accel_port
> # If you want to run Squid as an httpd accelerator, define the
> # host name and port number where the real HTTP server is.
> #
> # If you want virtual host support then specify the hostname
> # as "virtual".
> #
> # NOTE: enabling httpd_accel_host disables proxy-caching and
> # ICP. If you want these features enabled also, then set
> # the 'httpd_accel_with_proxy' option.
> #
> #httpd_accel_host hostname
> #httpd_accel_port port
> #httpd_accel_host 127.0.0.1
> httpd_accel_host app
> #app.skunk.org
> httpd_accel_port 80
>
> # TAG: httpd_accel_with_proxy on|off
> # If you want to use Squid as both a local httpd accelerator
> # and as a proxy, change this to 'on'.
> #
> #httpd_accel_with_proxy on
>
> # TAG: httpd_accel_uses_host_header on|off
> # HTTP/1.1 requests include a Host: header which is basically the
> # hostname from the URL. Squid can be an accelerator for
> # different HTTP servers by looking at this header. However,
> # Squid does NOT check the value of the Host header, so it opens
> # a big security hole. We recommend that this option remain
> # disabled unless you are sure of what you are doing.
> #
> # However, you will need to enable this option if you run Squid
> # as a transparent proxy. Otherwise, virtual servers which
> # require the Host: header will not be properly cached.
> #httpd_accel_uses_host_header on
>
> # MISCELLANEOUS
> # -----------------------------------------------------------------------------
>
> # TAG: dns_testnames
> # The DNS tests exit as soon as the first site is successfully looked up
> #
> # If you want to disable DNS tests, do not comment out or delete this
> # list. Instead use the -D command line option
> #
> dns_testnames internic.net usc.edu cs.colorado.edu mit.edu yale.edu
>
> # 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 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>'.
> #
> logfile_rotate 14
>
> # TAG: append_domain
> # Appends local domain name to hostnames without any dots in
> # them. append_domain must begin with a period.
> #
> #append_domain .yourdomain.com
>
> # TAG: tcp_recv_bufsize (bytes)
> # Size of receive buffer to set for TCP sockets. Probably just
> # as easy to change your kernel's default. Set to zero to use
> # the default buffer size.
> #
> #tcp_recv_bufsize 0 bytes
>
> # 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.
> #err_html_text
>
> # TAG: deny_info
> # Usage: deny_info err_page_name acl
> # Example: deny_info ERR_CUSTOM_ACCESS_DENIED bad_guys
> #
> # This can be used to return a ERR_ page for requests which
> # do not pass the 'http_access' rules. A single ACL will cause
> # the http_access check to fail. If a 'deny_info' line exists
> # for that ACL then Squid returns a corresponding error page.
> #
> # You may use ERR_ pages that come with Squid or create your own pages
> # and put them into the configured errors/ directory.
>
> # 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.
> #
> #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 not set (default) or set to zero, Squid will keep all memory it
> # can. That is, there will be no limit on the total amount of memory
> # used for safe-keeping.
> #
> # To disable memory allocation optimization, do not set
> # memory_pools_limit to 0. Set memory_pools to "off" instead.
> #
> # An overhead for maintaining memory pools is not taken into account
> # when the limit is checked. This overhead is close to four bytes per
> # object kept. However, pools may actually _save_ memory because of
> # reduced memory thrashing in your malloc library.
>
> # TAG: forwarded_for on|off
> # If set, Squid will include your system's IP address or name
> # in the HTTP requests it forwards. By default it looks like
> # this:
> #
> # X-Forwarded-For: 192.1.2.3
> #
> # If you disable this, it will appear as
> #
> # X-Forwarded-For: unknown
> #
> forwarded_for on
>
> # 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.
> #
> log_icp_queries off
>
> # 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, then
> # it is probably okay to set this to 'on'.
> #
> #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.
> #
> #minimum_direct_hops 4
>
> # 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
> # pconn
> # peer_select
> # 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.
> #
> #cachemgr_passwd secret shutdown
> #cachemgr_passwd lesssssssecret info stats/objects
> cachemgr_passwd disable all
>
> # TAG: store_avg_object_size (kbytes)
> # Average object size, used to estimate number of objects your
> # cache can hold. See doc/Release-Notes-1.1.txt. The default is
> # 13 KB.
> #
> store_avg_object_size 30 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.
> #
> store_objects_per_bucket 20
>
> # TAG: http_anonymizer
> # If you want to filter out certain HTTP request headers for
> # privacy reasons, enable this option. There are three
> # appropriate settings:
> # 'off' All HTTP request headers are passed.
> # 'standard' Specific headers are removed
> # 'paranoid' Only specific headers are allowed.
> # To see which headers are allowed or denied, please see the
> # http-anon.c source file.
> #
> http_anonymizer off
>
> # TAG: client_db on|off
> # If you want to disable collecting per-client statistics, then
> # turn off client_db here.
> #
> client_db off
>
> # TAG: netdb_low
> # TAG: netdb_high
> # The low and high water marks for the ICMP measurement
> # database. These are counts, not percents. The defaults are
> # 900 and 1000. When the high water mark is reached, database
> # entries will be deleted until the low mark is reached.
> #
> netdb_low 900
> netdb_high 1000
>
> # 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.
> #
> netdb_ping_period 1 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' then that peer will send ICMP pings to origin server
> # sites of the URLs it receives. If you enable this option then the
> # ICP replies from that peer will include the ICMP data (if available).
> # Then, when choosing a parent cache, Squid will choose the parent with
> # the minimal RTT to the origin server. When this happens, the
> # hierarchy field of the access.log will be
> # "CLOSEST_PARENT_MISS". This option is off by default.
> #
> query_icmp on
>
> # 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.
> #
> #test_reachability off
>
> # TAG: buffered_logs on|off
> # Some log files (cache.log, useragent.log) are written with
> # stdio functions, and as such they can be buffered or
> # unbuffered. By default they will be unbuffered. Buffering them
> # can speed up the writing slightly (though you are unlikely to
> # need to worry).
> #buffered_logs off
>
> # 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.
> #
> #reload_into_ims off
>
> # TAG: always_direct
> # Usage: always_direct allow|deny [!]aclname ...
> #
> # Here you can use ACL elements to specify requests which should
> # ALWAYS be forwarded directly to origin servers. For example,
> # to always directly forward requests for local servers use
> # something like:
> #
> # acl local-servers dstdomain my.domain.net
> # always_direct allow local-servers
> #
> # To always forward FTP requests directly, use
> #
> # acl FTP proto FTP
> # always_direct allow FTP
> #
> # NOTE: There is a similar, but opposite option named
> # 'never_direct'. You need to be aware that "always_direct deny
> # foo" is NOT the same thing as "never_direct allow foo". You
> # may need to use a deny rule to exclude a more-specific case of
> # some other rule. Example:
> #
> # acl local-external dstdomain external.foo.net
> # acl local-servers dstdomain foo.net
> # always_direct deny local-external
> # always_direct allow local-servers
> #
> # This option replaces some v1.1 options such as local_domain
> # and local_ip.
>
> # 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
> # acl all src 0.0.0.0/0.0.0.0
> # never_direct deny local-servers
> # never_direct allow all
> #
> # or if squid is inside a firewall and there is local intranet
> # servers inside the firewall then 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 option replaces some v1.1 options such as inside_firewall
> # and firewall_ip.
>
> # TAG: fake_user_agent
> # If you use the paranoid http_anonymizer setting, Squid will strip
> # your User-agent string from the request. Some Web servers will
> # refuse your request without a User-agent string. Use this to
> # fake one up. For example:
> #
> # fake_user_agent Nutscrape/1.0 (CP/M; 8-bit)
> # (credit to Paul Southworth pauls@etext.org for this one!)
> #
> #fake_user_agent none
>
> # TAG: icon_directory
> # Where the icons are stored. These are normally kept in
> icon_directory /usr/local/squid/etc/icons
>
> # TAG: error_directory
> # If you wish to create your own versions of the default
> # (English) error files, either to customise them to suit your
> # language or company copy the template english files to anther
> # directory and point this tag at them.
>
> # TAG: minimum_retry_timeout (seconds)
> # This specifies the minimum connect timeout, for when the
> # connect timeout is reduced to compensate for the availability
> # of multiple IP addresses.
> #
> # When a connection to a host is initiated, and that host has
> # several IP addresses, the default connection timeout is reduced
> # by dividing it by the number of addresses. So, a site with 15
> # addresses would then have a timeout of 8 seconds for each
> # address attempted. To avoid having the timeout reduced to the
> # point where even a working host would not have a chance to
> # respond, this setting is provided. The default, and the
> # minimum value, is five seconds, and the maximum value is sixty
> # seconds, or half of connect_timeout, whichever is greater and
> # less than connect_timeout.
> #
> minimum_retry_timeout 5 seconds
>
> # TAG: maximum_single_addr_tries
> # This sets the maximum number of connection attempts for a
> # host that only has one address (for multiple-address hosts,
> # each address is tried once).
> #
> # The default value is three tries, the (not recommended)
> # maximum is 255 tries. A warning message will be generated
> # if it is set to a value greater than ten.
> #
> maximum_single_addr_tries 10
>
> # TAG: snmp_port
> # Squid can now serve statistics and status information via SNMP.
> # By default it listens to port 3401 on the machine. If you don't
> # wish to use SNMP, set this to '-1'.
> #
> # NOTE: SNMP support requires use the --enable-snmp configure
> # command line option.
> #snmp_port 3401
>
> # TAG: snmp_do_queueing
> # If disabled, snmp packets will not be queued but delivered
> # immediately. This could be useful when you want to monitor a
> # cache in trouble, but this could also make Squid block, slowing
> # connections and possibly worsening the cache status.
> #snmp_do_queueing on
>
> # TAG: forward_snmpd_port
> # This configures whether we should be forwarding SNMP requests
> # to another snmpd. The reason for putting this piece of
> # functionality into Squid was to enable access to the system's
> # installed snmpd with minimal changes. This option is turned
> # off by default, check with your /etc/services for your system's
> # snmp port (usually 161). We do not use getservbyname() to
> # allow you to set Squid into port 161 and your system's snmpd to
> # another port by changing /etc/services.
> #
> # WARNING: Because of Squid acting as a proxy snmpd for system
> # you have to do security checks on THIS snmpd for all objects.
> # Check your snmp_config_file.
> #forward_snmpd_port 0
>
> # TAG: snmp_mib_path
> # The location of Squid's mib.
> snmp_mib_path /usr/local/squid/etc/mib.txt
>
> # TAG: trap_sink
> # Hostname or ip address of trap sink for snmp
> #trap_sink 127.0.0.1
>
> # TAG: snmp_trap_community
> # Community name for traps.
> #snmp_trap_community public
>
> # TAG: snmp_enable_authen_traps
> # Enable SNMP authenticated traps. Set to 'off' or 'on'.
> #snmp_enable_authen_traps off
>
> # TAG: snmp_agent_conf
> # Define snmp views, users and communities
> # Example:
> # snmp_agent_conf view all .1.3.6 included
> # snmp_agent_conf view squid .1.3.6 included
> # snmp_agent_conf user squid - all all public
> # snmp_agent_conf user all all all all squid
> # snmp_agent_conf community public squid squid
> # snmp_agent_conf community readwrite all all
>
> # TAG: snmp_acl
> # Define access controls per community:
> # snmp_access communityname allow|deny [!]aclname ...
> # Example:
> # snmp_acl public allow adminsubnet
> # snmp_acl public deny all
>
> # TAG: snmp_incoming_address
> # TAG: snmp_outgoing_address
> # Just like 'udp_incoming_address' above, but for the SNMP port.
> #
> # snmp_incoming_address is used for the SNMP socket receiving
> # messages from SNMP agents.
> # snmp_outgoing_address is used for SNMP packets returned to SNMP
> # agents.
> #
> # The default behaviour is to not bind to any specific address.
> #
> # NOTE, snmp_incoming_address and snmp_outgoing_address can not have
> # the same value since they both use port 3130.
> #
> #snmp_incoming_address 0.0.0.0
> #snmp_outgoing_address 0.0.0.0
>
> # 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.
>
> # DELAY POOL PARAMETERS (all require DELAY_POOLS compilation option)
> # -----------------------------------------------------------------------------
> #
> # A general note on delay pools - the first matched delay pool is used,
> # that is, if a request falls into class1 then it isn't checked for class2
> # or class3 (and similarly a class2 request isn't checked for class3).
>
> # TAG: delay_class1_access
> # This is used to select what client requests are processed via
> # the first ("class 1") delay pool. In this delay pool only the
> # aggregate traffic allowance is configurable.
>
> # TAG: delay_class2_access
> # This is used to select what client requests are processed via
> # the first ("class 2") delay pool. In this delay pool both the
> # aggregate and per-host traffic allowance are configurable.
> # There are 254 individual delay pools based on the last 8 bits
> # of the client IP address (addresses ending in 0 and 255 are not
> # permitted).
>
> # TAG: delay_class3_access
> # This is used to select what client requests are processed via
> # the first ("class 3") delay pool. In this delay pool, the
> # aggregate, network and per-host traffic allowance are
> # configurable. There are 255 network delay pools based on the
> # 17th to 24th bit of the client IP address (network 255 is not
> # permitted), and individual delay pools based on the last 16
> # bits of the client IP address (network 255 and hosts ending in
> # 0 and 255 are not permitted).
>
> # TAG: delay_class1_aggregate_restore (bps)
> # The number of bytes per second added to the class 1 aggregate
> # delay pool traffic allowance (-1 to disable the delay pool).
>
> # TAG: delay_class1_aggregate_max (bytes)
> # The maximum number of bytes which can be in the class 1
> # aggregate delay pool traffic allowance.
>
> # TAG: delay_class2_aggregate_restore (bps)
> # The number of bytes per second added to the class 2 aggregate
> # delay pool traffic allowance (-1 to disable the delay pool).
>
> # TAG: delay_class2_aggregate_max (bytes)
> # The maximum number of bytes which can be in the class 2
> # aggregate delay pool traffic allowance.
>
> # TAG: delay_class2_individual_restore (bps)
> # The number of bytes per second added to the class 2 individual
> # host delay pool traffic allowances (-1 to disable these delay
> # pools).
>
> # TAG: delay_class2_individual_max (bytes)
> # The maximum number of bytes which can be in the class 2
> # individual host delay pool traffic allowances.
>
> # TAG: delay_class3_aggregate_restore (bps)
> # The number of bytes per second added to the class 3 aggregate
> # delay pool traffic allowance (-1 to disable the delay pool).
>
> # TAG: delay_class3_aggregate_max (bytes)
> # The maximum number of bytes which can be in the class 3
> # aggregate delay pool traffic allowance.
>
> # TAG: delay_class3_network_restore (bps)
> # The number of bytes per second added to the class 3 8-bit
> # network delay pool traffic allowances (-1 to disable these
> # delay pools).
>
> # TAG: delay_class3_network_max (bytes)
> # The maximum number of bytes which can be in the class 3 8-bit
> # network delay pool traffic allowances.
>
> # TAG: delay_class3_individual_restore (bps)
> # The number of bytes per second added to the class 3 individual
> # host delay pool traffic allowances (-1 to disable these delay
> # pools).
>
> # TAG: delay_class3_individual_max (bytes)
> # The maximum number of bytes which can be in the class 3
> # individual host delay pool traffic allowances.
>
> # TAG: incoming_icp_average
> # TAG: incoming_http_average
> # TAG: min_icp_poll_cnt
> # TAG: min_http_poll_cnt
> # Heavy voodoo here. I can't even beleve you are reading this.
> # Are you crazy? Don't even think about adjusting these unless
> # you understand the algorithms in comm_select.c first!
> #
> #incoming_icp_average 6
> #incoming_http_average 4
> #min_icp_poll_cnt 8
> #min_http_poll_cnt 8
>
> # TAG: max_open_disk_fds
> # TAG: offline_mode
> # Enable this option and Squid will never try to validate cached
> # objects.
>
> # TAG: uri_whitespace
> # What to do with requests that have whitespace characters in the
> # URI. Options:
> #
> # deny: The request is denied. The user receives an "Invalid
> # Request" message.
> # 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.
> # encode: The request is allowed and the whitespace characters are
> # encoded according to RFC1738. This could be considered
> # a violation of the HTTP/1.1
> # RFC because proxies are not allowed to rewrite URI's.
> # chop: The request is allowed and the URI is chopped at the
> # first whitespace. This might also be considered a
> # violation.
> uri_whitespace deny
>
> # TAG: persistent_client_posts
> # Turn this 'off' to disable persistent connections for POST
> # requests. When you disable this, Squid reads all bytes
> # from the client request and sends them to the server. This
> # makes Squid work with broken HTTP servers which expect the
> # additional CRLF pair from broken web clients.
> persistent_client_posts on
>
> ------------------------------------------------------------------------
> 925410264.776 1726 207.117.162.0 TCP_MISS/200 2835 GET http://app/esp/css/gstyle.css - DIRECT/app text/css [User-Agent: Mozilla/4.5 %5ben%5d (X11%3b U%3b Linux 2.0.36 i586)%0d%0aAccept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, image/png, */*%0d%0aAuthorization: Basic c2t1bms6JGtVbms=%0d%0aAccept-Encoding: gzip%0d%0aConnection: Keep-Alive%0d%0aAccept-Language: en%0d%0aHost: beta1.skunk.org%0d%0aAccept-Charset: iso-8859-1,*,utf-8%0d%0aCookie: userid=2177%0d%0a] [HTTP/1.1 200 OK%0d%0aDate: Thu, 29 Apr 1999 18:24:23 GMT%0d%0aServer: Apache/1.3.4 (Unix)%0d%0aPragma: cache%0d%0aConnection: close%0d%0aContent-Type: text/css%0d%0a%0d] [\CDN73ZqYWMpc7`-$
> 925410594.644 2098 207.117.162.0 TCP_MISS/200 14548 GET http://app/ - DIRECT/app text/html [User-Agent: Mozilla/4.5 %5ben%5d (X11%3b U%3b Linux 2.0.36 i586)%0d%0aAccept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, image/png, */*%0d%0aAccept-Encoding: gzip%0d%0aConnection: Keep-Alive%0d%0aAccept-Language: en%0d%0aHost: beta1.skunk.org%0d%0aAccept-Charset: iso-8859-1,*,utf-8%0d%0a] [HTTP/1.1 200 OK%0d%0aDate: Thu, 29 Apr 1999 18:29:52 GMT%0d%0aServer: Apache/1.3.4 (Unix)%0d%0aSet-Cookie: userid=10412%3b Path=/%3b Domain=.skunk.org%3b%0d%0aPragma: cache%0d%0aConnection: close%0d%0aContent-Type: text/html%0d%0a%0d] [\CDN3IkRDMQpc7R-$
> 925410603.156 1697 207.117.162.0 TCP_MISS/200 2835 GET http://app/esp/css/gstyle.css - DIRECT/app text/css [User-Agent: Mozilla/4.5 %5ben%5d (X11%3b U%3b Linux 2.0.36 i586)%0d%0aAccept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, image/png, */*%0d%0aAccept-Encoding: gzip%0d%0aConnection: Keep-Alive%0d%0aAccept-Language: en%0d%0aHost: beta1.skunk.org%0d%0aAccept-Charset: iso-8859-1,*,utf-8%0d%0aCookie: userid=10412%0d%0a] [HTTP/1.1 200 OK%0d%0aDate: Thu, 29 Apr 1999 18:30:01 GMT%0d%0aServer: Apache/1.3.4 (Unix)%0d%0aPragma: cache%0d%0aConnection: close%0d%0aContent-Type: text/css%0d%0a%0d] [\CDNn,/u9VQpc76-$
> 925410607.100 1938 207.117.162.0 TCP_MISS/200 232 GET http://app/esp/images/tab_left.gif - DIRECT/app image/gif [User-Agent: Mozilla/4.5 %5ben%5d (X11%3b U%3b Linux 2.0.36 i586)%0d%0aAccept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg image/png%0d%0aCookie: userid=10412%0d%0aAccept-Encoding: gzip%0d%0aConnection: Keep-Alive%0d%0aReferer: http://beta1.skunk.org/%0d%0aHost: beta1.skunk.org%0d%0aAccept-Charset: iso-8859-1,*,utf-8%0d%0aAccept-Language: en%0d%0a] [HTTP/1.1 200 OK%0d%0aDate: Thu, 29 Apr 1999 18:30:05 GMT%0d%0aServer: Apache/1.3.4 (Unix)%0d%0aConnection: close%0d%0aContent-Type: image/gif%0d%0a%0d] [\CDNzyPjsZQpc7N-$
> 925410607.946 2907 207.117.162.0 TCP_MISS/200 4682 GET http://app/esp/images/peri.gif - DIRECT/app image/gif [User-Agent: Mozilla/4.5 %5ben%5d (X11%3b U%3b Linux 2.0.36 i586)%0d%0aAccept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg image/png%0d%0aCookie: userid=10412%0d%0aAccept-Encoding: gzip%0d%0aConnection: Keep-Alive%0d%0aReferer: http://beta1.skunk.org/%0d%0aHost: beta1.skunk.org%0d%0aAccept-Charset: iso-8859-1,*,utf-8%0d%0aAccept-Language: en%0d%0a] [HTTP/1.1 200 OK%0d%0aDate: Thu, 29 Apr 1999 18:30:05 GMT%0d%0aServer: Apache/1.3.4 (Unix)%0d%0aConnection: close%0d%0aContent-Type: image/gif%0d%0a%0d] [\CDN;XX4PZQpc7K-$
> 925410608.360 3388 207.117.162.0 TCP_MISS/200 232 GET http://app/esp/images/tab_right.gif - DIRECT/app image/gif [User-Agent: Mozilla/4.5 %5ben%5d (X11%3b U%3b Linux 2.0.36 i586)%0d%0aAccept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg image/png%0d%0aCookie: userid=10412%0d%0aAccept-Encoding: gzip%0d%0aConnection: Keep-Alive%0d%0aReferer: http://beta1.skunk.org/%0d%0aHost: beta1.skunk.org%0d%0aAccept-Charset: iso-8859-1,*,utf-8%0d%0aAccept-Language: en%0d%0a] [HTTP/1.1 200 OK%0d%0aDate: Thu, 29 Apr 1999 18:30:05 GMT%0d%0aServer: Apache/1.3.4 (Unix)%0d%0aConnection: close%0d%0aContent-Type: image/gif%0d%0a%0d] [\CDN[gG;n[Qpc7O-$
> 925410608.414 3228 207.117.162.0 TCP_MISS/200 231 GET http://app/esp/images/clear_dot.gif - DIRECT/app image/gif [User-Agent: Mozilla/4.5 %5ben%5d (X11%3b U%3b Linux 2.0.36 i586)%0d%0aAccept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg image/png%0d%0aCookie: userid=10412%0d%0aAccept-Encoding: gzip%0d%0aConnection: Keep-Alive%0d%0aReferer: http://beta1.skunk.org/%0d%0aHost: beta1.skunk.org%0d%0aAccept-Charset: iso-8859-1,*,utf-8%0d%0aAccept-Language: en%0d%0a] [HTTP/1.1 200 OK%0d%0aDate: Thu, 29 Apr 1999 18:30:05 GMT%0d%0aServer: Apache/1.3.4 (Unix)%0d%0aConnection: close%0d%0aContent-Type: image/gif%0d%0a%0d] [\CDNtx6x\[Qpc7O-$
> 925410614.370 1747 207.117.162.0 TCP_MISS/200 1562 GET http://app/esp/images/mark4.gif - DIRECT/app image/gif [User-Agent: Mozilla/4.5 %5ben%5d (X11%3b U%3b Linux 2.0.36 i586)%0d%0aAccept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg image/png%0d%0aCookie: userid=10412%0d%0aAccept-Encoding: gzip%0d%0aConnection: Keep-Alive%0d%0aReferer: http://beta1.skunk.org/%0d%0aHost: beta1.skunk.org%0d%0aAccept-Charset: iso-8859-1,*,utf-8%0d%0aAccept-Language: en%0d%0a] [HTTP/1.1 200 OK%0d%0aDate: Thu, 29 Apr 1999 18:30:12 GMT%0d%0aServer: Apache/1.3.4 (Unix)%0d%0aConnection: close%0d%0aContent-Type: image/gif%0d%0a%0d] [\CDN,fySmaQpc7L-$
> 925410614.401 1688 207.117.162.0 TCP_MISS/200 2028 GET http://app/esp/images/ad1.gif - DIRECT/app image/gif [User-Agent: Mozilla/4.5 %5ben%5d (X11%3b U%3b Linux 2.0.36 i586)%0d%0aAccept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg image/png%0d%0aCookie: userid=10412%0d%0aAccept-Encoding: gzip%0d%0aConnection: Keep-Alive%0d%0aReferer: http://beta1.skunk.org/%0d%0aHost: beta1.skunk.org%0d%0aAccept-Charset: iso-8859-1,*,utf-8%0d%0aAccept-Language: en%0d%0a] [HTTP/1.1 200 OK%0d%0aDate: Thu, 29 Apr 1999 18:30:12 GMT%0d%0aServer: Apache/1.3.4 (Unix)%0d%0aConnection: close%0d%0aContent-Type: image/gif%0d%0a%0d] [\CDN<pcdCaQpc7J-$
> 925410618.297 1690 207.117.162.0 TCP_MISS/200 1856 GET http://app/esp/images/ad2.gif - DIRECT/app image/gif [User-Agent: Mozilla/4.5 %5ben%5d (X11%3b U%3b Linux 2.0.36 i586)%0d%0aAccept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg image/png%0d%0aCookie: userid=10412%0d%0aAccept-Encoding: gzip%0d%0aConnection: Keep-Alive%0d%0aReferer: http://beta1.skunk.org/%0d%0aHost: beta1.skunk.org%0d%0aAccept-Charset: iso-8859-1,*,utf-8%0d%0aAccept-Language: en%0d%0a] [HTTP/1.1 200 OK%0d%0aDate: Thu, 29 Apr 1999 18:30:16 GMT%0d%0aServer: Apache/1.3.4 (Unix)%0d%0aConnection: close%0d%0aContent-Type: image/gif%0d%0a%0d] [\CDNaMtnFeQpc7J-$

-- 
Adam Firester                           
UNIX Systems Administrator