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[thirdparty/squid.git] / ChangeLog

	- Added basic support for Range requests. For most cachable
	  requests, Squid replies with an "Accept-Ranges" header. Upon
	  receiving a potentially cachable Range request for a not
	  cached object, Squid requests the whole object from origin
	  server and then replies with specified range(s) to the
	  client. Multi-range requests are supported. Adjacent
	  overlapping ranges are merged. If-Range requests are
	  supported.  Limitations:  Multi-range requests with out of
	  order ranges are not supported.
	- Made md5.c use standard memcpy and memset if they are
	  avaliable.
	- Memory pools will now shrink if Squid is run-time
	  reconfigured with smaller value of memory_pools_limit tag.
	- Added counter for number of clients (Tomi Hakala).
	- Changed neighbor UP/DOWN algorithm to require 10 failed TCP
	  connections for UP->DOWN transition.
	- Added 'unique_hostname' configuration option when its
	  necessary to have multiple machines with the same visible
	  hostname.
	- Fixed pumpReadFromClient() to not read too many bytes on
	  persistent connections.
	- We can now cache HTTP replies with Set-Cookie.  These evil
	  headers are now filtered out for cache hits on the client
	  side.
	- Fixed SNMP bugs caused by using snmpwalk.
	- Fixed snmpwalk crash. snmpwalks do not crash squid anymore.
	- Fixed snmp system Group; all objects are now returned.
	- Fixed snmp system Group sysDescr and sysContact.
	- Allocate FwdState from mem pools.
	- Minor HTCP progress.
	- Moved 'miss_access' ACL check from client_side.c to forward.c
	- Fixed logging of usernames for requests which require
	  proxy-authentication.
	- Fixed select-spin bug when an ICP reply actually gets queued
	  and we failed to execute the write callback.
	- Fixed a storeCheckSwapOut bug.  We were freeing up to
	  the queued offset instead of the done offset.  This
	  resulted in a small chunk of object data not being in
	  memory and not yet written to disk.  A client could
	  recieve a partial object because file_read() unexpectedly
	  returns EOF.
	- Fixed proxy-authentication hangs (Henrik Nordstrom).

Changes to squid-1.2.beta22 (June 1, 1998):

	- do not cut off "; parameter" from "digitized" Content-Type 
	  http fields
	- Added X-Request-URI for persistent connection debugging 
	  (Henrik Nordstrom)
	- Added Polish error pages from Maciej Kozinski.
	- Fixed hash_first/hash_next bugs with **Current pointer.
	  Replaced with *next pointer.
	- Fixed PUT/POST bugs in client (Henrik Nordstrom).
	- Deny forwarding loops in httpd accel mode (Henrik Nordstrom).
	- Fixed eventRun "spin" bug when event delta time == 0.
	- Fixed setting Last Modified time on cached entries when
	  receiving a 304 reply.
	- Added while loop in httpAccept().
	- Added while loop in icpHandleUdp().
	- Fixed some small memory leaks.
	- Fixed single-bit-int flag checks (Henrik Nordstrom).
	- Replaced "complex" (offset accounting) calls to snprintf with MemBuf
	- Do not send only-if-cached cc directive with requests 
          for peer's digests.
	- Added "automatic tuning" for incoming request rate, i.e.
	  how often to check HTTP and ICP sockets.  See comm.c
	  comments for details.

Changes to squid-1.2.beta21 (May 22, 1998):

	- Added Italian error pages by Alessio Bragadini.
	- Added Estonian error pages by Toomas Soome.
	- Added Russian (koi-r) error pages by Andrew L. Davydov.
	- Added Czech error pages by Jakub Nantl.
	- Fixed asnAclInitialize calling to prevent coredump.
	- Fixed FTP directory parsing again.
	- Made FTP directory listing "Generated" tagline like
	  the one for error pages.
	- Fixed an assertion coredump in statHistCopy from 
   	  reconfiguring with different #peers in squid.conf
	- Ignore leading whitespace on requests (and replies).  RFC
	  2068 section 4.1, robustness (Henrik Nordstrom)
	- Fixed keep_alive bug.  We did not always honour reply
	  headers, but rather assumed connections could be persistent.
	- Fixed reading whois output for AS numbers, especially when
	  they are longer than 4 KB.
	- Removed 'cache_stoplist_pattern' configuration option.  This
	  feature is now handled by 'no_cache'.
	- If a URN resolves to only one URL, just return it immediately
	  instead of giving the user a "choice" (Andy Powell).
	- Fixed year-2000 bug in lib/iso3307.c (Henrik Nordstrom).
	- Changed squid-internal object names.
	- Added netdb exchange protocol.
	- Fixed wordlistDestroy() uninitialized pointer bug in
	  ftpParseControlReply.
	- Fixed redirector subprocess to show real program name.
	- Changed URN menu output to be sorted.
	- Added fast select(2) timeouts when using ASYNC_IO.
	- Added ARP ACL support for Linux (David Luyer).
        - Added binary http headers to requests
        - request_t objects are now created and destroyed in a consistent way
        - Fixed cache control printf bug
        - Added a lot of new http header ids
        - Improved Connection: header handling; now both Connection and
          Proxy-Connection headers are checked for connection directives
        - Connection request header is now handled correctly regardless
          of its position and the number of entries
	- Only replies with valid Content-Length can be sent with keep-alive
	  connection directive (Henrik Nordstrom)
        - Better handling of persistent connection "clues" in HTTP headers;
	  the decision now depends on HTTP version (and User-Agent exceptions)
        - Removed handling of "length=" directive in IMS headers;
          the directive is not in the HTTP/1.1 standard;
          standing by for objections
        - allowed/denied headers are now checked using bit masks instead of
          strcmp loops
        - removed Uri: from allowed headers; Uri is deprecated in RFC 2068
	- removed processing of Request-Range header (not in specs?)
	- Fixed byte-order bugs in cacheDigestHashKey.
	- Changed hash_remove_link() to return void.
	- Changed ipcache_gethostbyname() to return NULL if
	  i->addrs.count == 0.
	- Added millisecond-timing to select/poll loops and event
	  queue.
	- Changed 'peerPingTimeout' value to be twice the average
	  of all the peer ICP RTT's.
	- Added 'half_closed_clients' option to force closing of
	  client connections which might only be half-closed.
	- Fixed matchDomainName coredump bug.
	- Don't cache HTTP replies with Vary: headers until we
	  get content negotiation working.
	- Fixed SSL proxying to forward full HTTP request headers.
	- Changed storeGetMemSpace().  Only purge down to the HIGH
	  water mark; move locked entries to the head of the inmem
	  list.
	- Changed clientReadRequest() to locally handle any
	  "squid-internal-static" URL for any host.
	- Disable persistent connections for client connections
	  from broken Netscape User-Agent, version 3.* (Stewart Forster)

Changes to squid-1.2.beta20 (April 24, 1998):

	- Improved support for only-if-cached cache control directive.
	- Enabled 304 replies for ENTRY_SPECIAL objects (e.g., icons).
	- Fixed 'quick_abort' percent calculation bug.
	- Fixed quick_abort FPE bug.
	- Changed more errno-checking functions to use ignoreErrno().
	- Added ERESTART to ignoreErrno() because of report from
	  a Solaris system.
	- Fixed '#elsif' typo.
	- Fixed MemPool assertion by moving memInit() to before
	  configuration parsing functions.
	- Fixed default 'announce_period' value (was 1 day, should
	  be 0) (Joe Ramey).
	- Added configure warning for low filedescriptors and pointer
	  to FAQ.
	- Fixed httpBodySet() bug causing URN related coredumps.
	- Changed ipcacheCycleAddr() to always cycle through all all
	  available addresses, and not just advance when one of
	  them goes BAD.
	- Fixed squid-internal bug for mixed-case hostnames (Henrik
	  Nordstrom).
	- Added some additional fault toleranse on FTP data channels
	  (Henrik Nordstrom).
	- Corrected error reporting on FTP "hacks" (Henrik Nordstrom).
	- Added lock/unlock for StoreEntry during storeAbort().
	- Added filemap bit usage stats to cachemgr 'storedir' and
	  'info'.
	- Replaced 'cache_stoplist' with 'no_cache' Access list.
	- Fixed (hopefully) remaining swapfile-open-at-exit bugs.
	- Fixed default hierarchy_stoplist to be ``default if none.''
	- Fixed 'fake a recent reply' hack for detecting DEAD
	  and ALIVE neighbors (Joe Ramey).
	- Fixed FTP directory parsing bugs (Joe Ramey).
	- Fixed ftpTraverseDirectory coredump for NULL ftpState->filepath
	  (Joe Ramey).
	- Fixed daylight savings time bug (again).
	- A lot of Cache Digests additions, fixes, and tuning. 
	  Cache Digests are still "very experimental".
	- Fixed snprintf() bug.  When len == 1, snprintf() would treat
	  the buffer as unknown size, emulating sprintf() behaviour.
	- Made Error page language configurable with configure script
	  (Henrik Nordstrom).
	- Fixed squid-internal URLs when http_port == 80.
	- Remember the client address on redirected requests (Henrik
	  Nordstrom).
	- Don't rebuild the request if the redirector returned the same
	  URL (Henrik Nordstrom).
	- Rewrite Host: header on redirected requests (Henrik
	  Nordstrom).
	- Include port (if non-standard) in generated Host: headers
	  (Henrik Nordstrom).
	- Fixed rfc1123 timezone hacks for Windows NT
	  (Henrik Nordstrom).
	- Added Russian Error pages by Ilia Zadorozhko.
	- Added totals for ICP and HTTP hits to cachemgr client_list
	  output.
	- Changed error message to 'Generated TIME by HOST (SQUID/VER)'
	  because any string with an '@' must be an email address.
	- Fixed POST for content-length == 0.
	- Fixed "huge 304 reply" loop bug.
	- Fixed --enable-splaytree compile bugs.
	- Removed ASN lookup code in peer_select.c.

Changes to squid-1.2.beta19 (Apr 8, 1998):

	- Squid-1.2.beta19 compiles and runs on Windows/NT with
	  Cygnus Gnu-WIN32 b19 (Henrik Nordstrom).
	- Added French Error pages by Frank DENIS.
	- Added Dutch Error pages by Mark Visser
	- Added German Error pages by Bernd P. Ziller, Jens Frank,
	  and Anke S.
	- Added support for only-if-cached cache-control directive.
	- Added RELAXED_HTTP_PARSER #define to allow requests which are
	  missing the HTTP identifier on the request line (e.g. buggy
	  SpyGame queries).  RELAXED_HTTP_PARSER is undefined by default.
	- Fixed disk.c FD leak for delayed closes in
	  diskHandleWriteComplete().
	- Fixed cache announcement feature.
	- Fixed httpReadReply() to retry failed HTTP requests on
	  persistent connections when read() returns -1, not only
	  when it returns 0.
	- Fixed cbdata memory counting leak.  cbdataUnlock() always
	  called free(), never memFree().
	- Fixed storeDirWriteCleanLogs() malloc bug on Alphas.
	- Fixed `++loopdetect < 10' assertion due to
	  clientHandleIMSReply bug for invalid/partial HTTP
	  replies.
	- Added preliminary code for HTCP.
	- Renamed 'aux' dir to 'cfgaux' for legacy DOS machines.
	- Added "snmp_community" as an ACL type.
	- Cleaned up proxy-auth acl implementation and removed
	  memory leaks.
	- Added generic 'hashFreeItems()' function for efficiently
	  freeing hash table pointers.
	- Added whoisTimeout() for ASN code.
	- Removed BINARY TREE code.
	- Fixed forgetting to reset Config.Swap.maxSize in
	  configDoConfigure.
	- Fixed httpReplyUpdateOnNotModified() arguments-in-wrong-order
	  bug which caused not modified replies to not get updated.
	- Fixed client_side.c bugs which could cause data to be written
	  to the client in the wrong order for persistent connections.
	  clientPurgeRequest() and clientHandleIMSComplete() must not
	  call comm_write().  Instead they must create and write to
	  StoreEntry's.
	- Fixed ICP query service time counting bug(s).
	- replaced 'char *mime_headers_end()' with 'size_t headersEnd()'
	  to fix buffer overruns.  This also requires adding 'buf_sz'
	  args to some functions like clientBuildReplyHeader().
	  But we can eliminate the need to NULL-terminate the
	  buffer beforehand.
	- Changed commConnectCallback() to reset the FD timeout to
	  zero before notifying about the connection.  This requires
	  commSetTimeout() calls in numerous places to reinstall
	  timeouts.
	- Changed comm_poll_incoming() to be called less frequently
	  (every 15 I/O's instead of every 7 FD's) (Michael O'Reilly).
	- Removed HAVE_SYSLOG case for debug() macro.  Almost all
	  systems do have syslog(), but more importatnly the
	  _db_level value is needed for debugging to stderr.
	- Rewrote squid/dnsserver interface to use smaller, single-line
	  messages.
	- Rewrote 'dns' cachemgr output to use a table format.
	- Rewrote a lot of dnsserver.c.
	- Added eventAddIsh() for semi-random event scheduling.
	- Fixed an ftpTimeout bug for sessions which use PORT
	  commands.
	- Fixed ftp.c to recognized invalid PASV replies (e.g.
	  port == 0).
	- Removed hash_insert().  All hasing uses hash_join() now.
	- Renamed hash_unlink() to hash_remove_link().
	- Added hashPrime() to find closes prime hash table size
	  to a given value.
	- Fixed Keep-Alive ratio counting bug which prevented
	  persistent connections from being used between cache
	  peers.
	- Changed icmp.c to NOT queue messages sent from squid to
	  the pinger program.
	- Changed icp_v2.c to NOT queue ICP messages by default.
	  But they will be queued and resent once if the first
	  send fails.  Counters.icp.queued_replies counts the
	  number of messaages queued.
	- Cleaned up ICP logging.
	- Added identTimeout().
	- Fixed ipcache reply counting bug.  Overcounted dnsserver
	  replies for partial replies.
	- Added urlInternal() for building internal Squid URLs.
	- Changed peerAllowedToUse() to check both 'cache_peer_domain'
	  AND 'cache_peer_acl' configurations.  This should be changed
	  in the fugure to use ONLY cache_peer_acl.
	- Changed DEAD/REVIVED neighbor detection to avoid reporting
	  so many false deaths.  (Joe Ramey).
	- Added some preliminary code to support "cache digests."
	- Fixed pumpClose() coredumps (?).
	- Updated cachemgr 'info' output to show median service
	  times for various categories.
	- Fixed ABW bug in storeDirWriteCleanLogs().  sizeof(off_t)
	  != sizeof(int) for Alphas.
	- Fixed potential alignment problem in storeDirWriteCleanLogs().
	- Fixed store_rebuild.c to NOT replace current, but
	  not-swapped-out StoreEntry's with on-disk entries.
	- Changed storeCleanup() to call storeRelease on invalid
	  entries which don't have a swapfile (i.e. no unlink()
	  penalty).
	- Fixed storeSwapInStart() to fail for unvalidated
	  entries.
	- SNMP changes:
	  .  renovated mib and added descriptions and comments
	  .  added hit and byte counters to client_db , for
	     cacheClientTable
	  .  cacheClientTable, netdbTable, cachePeerTable,
	     cacheConnTable now indexed by ip address. hash_lookup was
	     enhanced to allow for subsequent hash_next's similar to
	     hash_first, to speed up getnext's in tables which refer to
	     hash-table structures.
	  .  added generic (well, sorf of) table indexing functionality
	  .  added makefile dependencies for snmplib and cache_snmp.h
	  .  WaisHost, WaisPort, Timeouts removed
	  .  FdTable split into FdTable and ConnTable. FdTable simplified
	  .  PeerTable and PeerStat merged and put into new cacheMesh
	     group
	  .  cacheClientTable added for client statistics and accounting 
	     (cacheMesh 2)
	  .  cacheSec and cacheAccounting groups removed 
	  .  fixed acl bug when communities not defined
	  .  snmp_acl now survives bad configuration

Changes to squid-1.2.beta18 (Mar 23, 1998):

	- Added v1.1 'test_reachability' option.
	- Fixed hash4() len == 0 bug.
	- Fixed Config.Swap.maxSize reconfigure bug.
	- Fixed ICP query bug determining request method.
	- Moved ICP's storeGet() cache lookup into neighborsUdpAck()
	  so that we know neighbors are alive even when they send
	  us replies for unknown entries.
	- Changed configure script to add '-std1' for Digital Unix cc.
	- Fixed SNMP sizeof(int) / sizeof(long) bugs for 64-bit
	  systems.
	- Added support for 'Cache-Control: Only-If-Cached' request header.
	- Fixed CheckQuickAbort() bugs for multiple clients on one
	  StoreEntry.  Also changed storePendingNClients() to return
	  mem->nclients instead of counting the number of store_client
	  entries with pending callback functions.

Changes to squid-1.2.beta17 (Mar 17, 1998):

	- SNMP MIB version check changed to non-rcs.
	- Added memory pools for variable size objects (strings).
	  There are three pools; for small, medium, and large objects.  
	- Extended String object to use memory pools.  Most fixed size char
	  array fields will be replaced using string pools. Same for most
	  malloc()-ed buffers.
	- Changed icon handling to use the hostname and port of the squid
	  server, instead of the special hostname "internal.squid"
	  (Henrik Nordstrom).
	- All icons are now configured in mime.conf. No hardcoded icons,
	  including gohper icons (Henrik Nordstrom).
	- Fixed ICP bug when we send queries, but expect zero
	  replies.
	- Fixed alignment/casting bugs for ICP messages.
	- A generic client-to-server "pump" was added to handle HTTP
	  PUT as well as POST methods on the client-cache side. Based on
	  "pump" PUT requests can be made to either HTTP or FTP url's.
	  Code is still beta and interoperability with browsers etc has
	  not been tested.
	- Put #ifdefs around 'source_ping' code.
	- Added missing typedef for _arp_ip_data (Wesha).
	- Added regular-expression-based ACLs for client and server
	  domain names (Henrik Nordstrom).
	- Fixed ident-related coredumps from incorrect callback data.
	- Fixed parse_rfc1123() "space" bug.
	- Fixed xrealloc() XMALLOC_DEBUG bug (not calling check_free())..
	- Fixed some src/asn.c end-of-reply bugs and memory leaks.
	- Fixed some peer->options flag-setting bugs.
	- Fixed single-parent feature to work again
	- Removed 'single_parent_bypass' configuration option; instead
	  just use 'no-query'.
	- Surrounded 'source_ping' code with #ifdefs.
	- Changed 'deny_info URL' to use a custom Error page.
	- Modified src/client.c for testing POST requests.
	- Fixed hash4() for SCO (Vlado Potisk).

Changes to squid-1.2.beta16 (Mar 4, 1998):

	- Added Spanish error messages from Javier Puche.
	- Added Portuguese error messages from Pedro Lineu Orso
	- Added a simple but very effective hack to cachemgr.cgi that tries to
	  interpret lines with '\t' as table records and formats them
	  accordingly. With a few exceptions (see source code), first line
	  becomes a table heading ("<th>" html tag) and the rest is formated
	  with "<td>" tags.
	- Added "mem_pools_limit" configuration option. Semantics of
	  "mem_pools" option has also changed a bit to reflect new memory
	  management policy.
	- Reorganized memory pools. Squid now supports a global pool
	  limit instead of individual pool limits. Per-pool limits can be
	  implemented on top of the current scheme if needed, but it is
	  probably hard to guess their values.  Squid distributes pool
	  memory among "frequently allocated" objects.  There is a
	  configurable limit on the total amount of "idle" memory to be
	  kept in reserve. All requests that exceed that amount are
	  satisfied using malloc library.  Support for variable size
	  objects (mostly strings) will be enabled soon.
	- memAllocate() has now only one parameter. Objects are always
	  reset with 0s. (We actually never used that parameter before;
	  it was always set to "clear").
	- Added Squid "signature" to all ERR_ pages. The signature is
	  hardcoded and is added on-the-fly. The signature may use
	  %-escapes.  Added interface to add more hard-coded responses if
	  needed (see errorpage.c::error_hard_text).
	- Both default and configured directories are searched for ERR_
	  pages now. Configured directory is, of course, searched first.
	  This allows you to customize a subset of ERR_ pages (in a
	  separate directory) without danger of getting other copies out
	  of sync.
	- Security controls for the SNMP agent added. Besides
	  communities (like password) and views (part of tree
	  accessible), the snmp_acl config option can be used to do acl
	  based access checks per community.
	- SNMP agent was heavily re-written, based on cmu-snmpV1.8. You
	  can now walk through the whole mib tree. Several new variables
	  added under cacheProtoAggregateStats
	- Added rudimental statistics for HTTP headers.
	- Adjusted StatLogHist to a more generic/flexible StatHist.
	  Moved StatHist implementation into a separate file.
	- Added FTP support for PORT if PASV fails, also try the
	  default FTP data port (Henrik Nordstrom).
	- Fixed NULL pointer bug in clientGetHeadersForIMS when a
	  request is cancelled for fails on the client side.
	- Filled in some squid.conf comments (never_direct,
	  always_direct).
	- Added RES_DNSRCH to dnsserver's _res.options when the 
	  -D command line option is given.
	- Fixed repeated Detected DEAD/REVIVED Sibling messages when
	  peer->tcp_up == 0 (Michael O'Reilly).
	- Fixed storeGetNextFile's incorrect "directory does not exist"
	  errors (Michael O'Reilly).
	- Fixed aiops.c race condition (Michael O'Reilly, Stewart
	  Forster).
	- Added 'dns_nameservers' config option to specify non-default
	  DNS nameserver addresses (Maxim Krasnyansky).
	- Added lib/util.c code to show memory map as a tree
	  (Henrik Nordstrom).
	- Added HTTP and ICP median service times to Counters and
	  cachemgr average stats.
	- Changed "-d" command line option to take debugging level
	  as argument.  Debugging equal-to or less-than the argument
	  will be written to stderr.
	- Removed unused urlClean() function from url.c.	
	- Fixed a bug that allowed '?' parts of urls to be recorded in
	  store.log.  Logged urls are now "clean".
	- Cache Manager got new Web interface (cachemgr.cgi). New .cgi
	  script forwards basic authentication from browser to squid.
	  Authentication info is encoded within all dynamically generated
	  pages so you do not have to type your password often.
	  Authentication records expire after 3 hours (default) since
	  last use. Cachemgr.cgi now recognizes "action protection" types
	  described below.
	- Added better recognition of available protection for actions
	  in Cache Manager. Actions are classified as "public" (no
	  password needed), "protected" (must specify a valid password),
	  "disabled" (those with a "disable" password in squid.conf), and
	  "hidden" (actions that require a password, but do not have
	  corresponding cachemgr_passwd entry). If you manage to request
	  a hidden, disabled, or unknown action, squid replies with
	  "Invalid URL" message. If a password is needed, and you failed
	  to provide one, squid replies with "Access Denied" message and
	  asks you to authenticate yourself.
	- Added "basic" authentication scheme for the Cache Manager.
	  When a password protected function is accessed, Squid sends an
	  HTTP_UNAUTHORIZED reply allowing the client to authorize itself
	  by specifying "name" and "password" for the specified action.
	  The user name is currently used for logging purposes only.  The
	  password must be an appropriate "cachemgr_passwd" entry from
	  squid.conf. The old interface (appending @password to the url)
	  is still supported but discouraged.  Note: it is not possible
	  to pass authentication information between squid and browser
	  *via a web server*. The server will strip all authentication
	  headers coming from the browser. A similar problem exists for
	  Proxy-Authentication scheme.
	- Added ERR_CACHE_MGR_ACCESS_DENIED page to notify of
	  authentication failures when accessing Cache Manager.
	- Added "-v" (Verbose) and "-H" (extra Headers) options to client.c.
	- Added simple context-based debugging to debug.c. Currently,
	  the context is defined as a constant string. Context reporting
	  is triggered by debug() calls.  Context debugging routines
	  print minimal amount of information sufficient to describe
	  current context. The interface will be enhanced in the future.
	- Replaced _http_reply with HttpReply. HttpReply is a
	  stand-alone object that is responsible for parsing, swapping,
	  and comm_writing of HTTP replies. Moved these functions from
	  various modules into HttpReply module.
	- Added HttpStatusLine, HttpHeader, HttpBody.
	- All HTTP headers are now parsed and stored in a "compiled"
	  form in the HttpHeader object.  This allows for a great
	  flexibility in header processing and builds basis for support
	  of yet unsupported HTTP headers.
	- Added Packer, a memory/store redirector with a printf
	  interface.  Packer allows to comm_write() or swap() an object
	  using a single routine.
	- Added MemBuf, a auto-growing memory buffer with printf
	  capabilities.  MemBuf replaces most of old local buffers for
	  compiling text messages.
	- Added MemPool that maintains a pre-allocated pool of opaque
	  objects.  Used to eliminate memory thrashing when allocating
	  small objects (e.g.  field-names and field-value in http
	  headers).

Changes to squid-1.2.beta15 (Feb 13, 1998):

	NOTE: This version has changes which may cause all or part
	      of your cache to be lost.  However, you can problably
	      save most of it by doing a slow restart.  Specifically:

	1. Kill the running squid-1.2.beta14 process; wait for it to
	   fully exit.
	2. Remove all 'swap.state*' files, either in each cache_dir, or
	   as defined in your squid.conf
	3. Start squid-1.2.beta15.   The store will be rebuilt from the
	   existing swap files, reading the directories and opening
	   the files.

	- Fixed some problems related to disk (and pipe) write error
	  handling.  file_close() doesn't always close the file
	  immediately; i.e. when there are pending buffers to write.
	  StoreEntry->lock_count could become zero while a write is
	  pending, then bad things happen during the callback.
	- The file_write() callback data must now be in the callback
	  database (cbdata).  We now use the swapout_ctrl_t structure
	  for the callback data; it stays around for as long as we are
	  swapping out.
	- Changed the way write errors are handled by diskHandleWrite.
	  If there is no callback function, now we exit with a fatal
	  message under the assumption that the file in question is a
	  log file or IPC pipe.  Otherwise, we flush all the pending
	  write buffers (so we don't see multiple repeated write errors
	  from the same descriptor) and let the upper layer decide how
	  to handle the failure.
	- Fixed storeDirWriteCleanLogs.  A write failure was leaving
	  some empty swap.state files, even though it tells us that its
	  "not replacing the file."  Don't flush/rename logs which we
	  have prematurely closed due to write failures, indiciated by
	  fd[dirn] == -1.  Close these files LAST, not before
	  renaming.
	- Fixed storeDirClean to clean directories in a more sensible
	  order, instead of the new "MONOTONIC" order for swap files.
	- Merged fdstat.c functions into fd.c.
	- Cleaned up some debugging sections.  Some unrelated source
	  files were using the same section.
	- Removed curly brackets from all cachemgr output.
	- Removed unused filemap->last_file_number_allocated member.
	- Removed unused fde->lifetime_data member.
	- Fixed incorrectly applying htonl() on icp_common_t->shostid.
	- Call setsid() before exec() in ipc.c so that child processes
	  don't receive SIGINT (etc) when running squid on a tty.
	- Changed StoreEntry->object_len to ->swap_file_sz so we
	  can verify the disk file size at restart.  Moved object_len
	  to MemObject->object_sz.  Note object_sz is initialized
	  to -1.  If object_sz < 0, then we need to open the swap
	  file and read the swap metadata.
	- Changed store_client->mem to ->entry because we need
	  e->swap_file_sz to set mem->object_sz at swapin.
	- Renamed storeSwapData structure to storeSwapLogData.
	- Fixed storeGetNextFile to not increment d->dirn.  Added
	  check for opendir() failure.
	- Fixed storeRebuildStart to properly link the directory
	  list for storeRebuildfromDirectory mode.
	- Added -S command line option to double-check store
	  consistency with disk files in storeCleanup().
	- Fixed a problem with transactional logging.  In many
	  cases we were adding the public cache key and then
	  logging a delete for the private key.  This is worthless
	  because during rebuild we could not locate the previous
	  public-keyed entry.  Now we assert that only public-keyed
	  entries can be logged to swap.state.  storeSetPublicKey()
	  and storeSetPrivateKey() have been modified to log an
	  ADD or DEL when the key changes.
	- Fixed storeDirClean bug.  Needed to call
	  storeDirProperFileno() so the "dirn bits" get set.
	- Fixed a storeRebuildFromDirectory bug.  fullpath[] and
	  fullfilename[] were static to that function and did
	  not change when the "rebuild_dir" arg did.  Moved these
	  buffers to the rebuild_dir structure.
	- In storeRebuildFromSwapLog, we were calling storeRelease()
	  for cache key collisions.  This only set the RELEASE_REQUEST
	  bit and did not clear the swap_file_number in the filemap or
	  in the StoreEntry, so the swap file could get unlinked later
	  when it was really released.
	- Fixed FTP so that ';type=X' specifically sets the HTTP reply
	  content-type and content-encoding (Henrik Nordstrom).
	- Removed 'icon_content_type' configuration option.  Content
	  types now taken from mime.conf (Henrik Nordstrom).
	- Added additional memory malloc tracing and memory leak
	  detection.  Use --enable-xmalloc-debug-trace configure
	  option and -m command line option  (Henrik Nordstrom).

Changes to squid-1.2.beta14 (Feb 6, 1998):

	- Replaced snmplib free() calls with xfree().
	- Changed the 'net_db_name' hash table structure to
	  make it easier to move names from one network to another
	  (copied from 1.1 code).
	- Filled in some of the config dump routines (dump_acl,
	  dump_acl_access).
	- Full memory debugging option (--enable-xmalloc-debug-trace)
	  (Henrik Nordstrom).
	- Filled-in and clarified many squid.conf comments (Oskar
	  Pearson).
	- Fixed up handling of SWAP_LOG_DEL swap.state entries.

Changes to squid-1.2.beta13 (Feb 4, 1998):

	- NOTE: With this version the "swap.state" file format has
	  changed.  Running this version for the first time will
	  cause your current cache contents to be lost!
	- NOTE: this version still has the bug where we don't rewind
	  a swapout file and rewrite the swap meta data.  Objects
	  larger than 8KB will be lost when rebuilding from the swap
	  files.
	- Combined various interprocess communication setup functions
	  into ipcCreate().
	- Removed some leftover ICP_HIT_OBJ things.
	- Removed cacheinfo and proto_count() and friends; these are to
	  be replaced in functionality by StatCounters and 5/60 minute
	  average views via cachemgr.
	- Fixed --enable-acltree configure message (Masashi Fujita).
	- Fixed no reference to @LIB_MALLOC@ in src/Makefile.in
	  (Masashi Fujita).
	- Fixed building outside of source tree (Masashi Fujita).
	- FTP: Format NLST listings, and inform the user that the NLST
	  (plain) format is available when we find a LIST listing that we
	  don't understand (Henrik Nordstrom)
	- FTP: Use SIZE on Binary transfers, and not ASCII. The
	  condition was inversed, making squid use SIZE on ASCII
	  transfers (Henrik Nordstrom).
	- Enable virtual and Host: based acceleration in order to be
	  able to use Squid as a transparent proxy without breaking
	  either virtual servers or clients not sending Host: header
	  the order of the virtual and Host: based acceleration needs
	  to be swapped, giving Host: a higher precendence than virtual
	  host (Henrik Nordstrom).
	- Use memmove/bcopy as detected by configure Some systems does
	  not have memmove, but have the older bcopy implementation
	  (Henrik Nordstrom).
	- Completely rewritten aiops.c that creates and manages a pool
	  of threads so thread creation overhead is eliminated (SLF).
	- Lots of mods to store.c to detect and cancel outstanding
	  ASYNC ops.  Code is not proven exhaustive and there are
	  definately still cases to be found where outstanding disk ops
	  aren't cancelled properly (SLF).
	- Changes to call interface to a few routines to support disk
	  op `tagging', so operations can be cleanly cancelled on
	  store_abort()s (SLF).
	- Implementation of swap.state files as transaction logs.
	  Removed objects are now noted with a negative object size.
	  This allows reliatively clean rebuilds from non-clean
	  shutdowns (SLF).
	- Now that the swap.state files are transaction logs, there's
	  now no need to validate by stat()ing.  All the validation
	  procedure does is now just set the valid bit AFTER all the
	  swap.state files have been read, because by that time, only
	  valid objects can be left.  Object still need to be marked
	  invalid when reading the swap.state file because there's no
	  guarantee the file has been retaken or deleted (SLF).
	- An fstat() call is now added after every
	  storeSwapInFileOpened() so object sizes can be checked.   Added
	  code to storeRelease() the object if the sizes don't match (SLF).
        - #defining USE_ASYNC_IO now uses the async unlink() rather than
          unlinkd() (SLF).
	- #defining MONOTONIC_STORE will support the creation of disk
	  objects clustered into directories.  This GREATLY improves disk
	  performance (factor of 3) over old `write-over-old-object'
	  method.  If using the MONOTONIC_STORE, the
	  {get/put}_unusedFileno stack stuff is disabled.  This is
	  actually a good thing and greatly reduces the risk of serving
	  up bad objects (SLF).
	- Fixed unlink() in storeWriteCleanLogs to be real unlink()
	  rather than ASYNC/unlinkd unlinks.  swap.state.new files were
	  being removed just after they were created due to delayed
	  unlinks (SLF).
	- Disabled various assertions and made these into debug warning
	  messages to make the code more stable until the bugs can be
	  tracked down (SLF).
	- Added most of Michael O'Reilly's patches which included many
	  bug fixes.  Ask him for full details (SLF).
	- Moved aio_check_callbacks in comm_{poll|select}().  It was
	  called after the fdset had been built which was wrong because
	  the callbacks were changing the state of the read/write
	  handlers prior to the poll/select() calls (SLF).
	- Fixed ARP ACL memory leaks (Dale).
	- Eliminated URL and SHA cache keys.  Cache keys will always
	  be MD5's now.
	- Fixed up store swap meta data.
	- Changed swap.state logs to a binary format.
	- The swap.state logs are written transaction-style.

Changes to squid-1.2.beta12 (Jan 30, 1998):

	- Added metadata headers to cache swap files.  This is an
	  incompatible change with previous versions.  Running this
	  version for the first time will cause your current cache
	  contents to be lost.
	- -D_REENTRANT when linking with -lpthreads (Henrik Nordstrom)
	- Show symlink destinations as a hyperlink in FTP listings
	  (Henrik Nordstrom)
	- Fixed not allocating enough space for rewriting URLs with
	  the Host: header (Eric Stern).
	- Year-2000 fixes (Arjan de Vet).
	- Fixed looping for cache hits on HEAD requests.
	- Fixed parseHttpRequest() coredump for 
          "GET http://foo HTTP/1.0\r\n\r\n\r\n"

Changes to squid-1.2.beta11 (Jan 6, 1998):

	- Fixed fake 'struct rusage' definition which prevented compling
	  on Solaris 2.4.
	- Fixed copy-by-ref bug for request->headers in
	  clientRedirectDone() (Michael O'Reilly).
	- Workaround for Solaris pthreads closing FD 0 upon fork()
	  (Michael O'Reilly).
	- Fixed shutdown bug with outgoing UDP sockets; we need to
	  disable their read handlers.
	- For comm_poll(), use the fast 50 msec timeout only when
	  USE_ASYNC_IO is defined.
	- Fixed pointer bug when freeing AS# ACL entries.
	- Fixed forgetting to reset Config.npeers to zero in free_peer().
	- Fixed ICP bug causing excessive TIMEOUTs with sibling
	  neighbors.  We must call the ICP reply callback even for
	  sibling misses.
	- Fixed some dnsserver-related reconfigure bugs. Need to 
	  use cbdataLock, etc in fqdncache.c.  Also don't want to
	  use ipcacheQueueDrain() and fqdncacheQueueDrain().
	- Fixed persistent connection bug.  We were incorrectly
	  deciding that non-200 replies without content-length
	  would not have a reply body.
	- Fixed intAverage() precedence bug.
	- Fixed memmove() 'len' arg bug.
	- Changed algorithm for determining alive/dead state of peers.
	  Instead of using a fixed number of unacknowledged ICP
	  replies, it is now based on timeouts.  If there are no ICP
	  replies received from a peer within 'dead_peer_timeout'
	  seconds, then we call it dead.
	- Added calls to getCurrentTime() in
	  comm_{select,poll}_incoming() when ALARM_UPDATES_TIME is not
	  being used.
	- Fixed shutdown bug when the incoming and outgoing ICP socket
	  is the same file descriptor.
	- Added buffered writes for storeWriteCleanLogs() (Stewart
	  Forster).
	- Patches for Qnx4 (Jean-Claude MICHOT).
	- Fixed returning void functions which seems to be a GCC-ism.
	- New configure script options (Henrik Nordstrom):
		--enable-new-storekey=[sha|md5(|url)] (was --enable-hashkey)
		--enable-acltree
		--enable-icmp
		--enable-delay-hack
		--enable-useragent-log
		--enable-kill-parent  (this should be named -hack)
		--enable-snmp
		--enable-time-hack
		--enable-cachemgr-hostname[=hostname]   (new)
		--enable-arp-acl  (new)
	- Added Doug Lea malloc-2.6.4 to the distribution, so that
	  people easily can try a decent malloc package if they syspect
	  their malloc is broken.  --enable-dlmalloc (Henrik Nordstrom).
	- Made XMALLOC_DEBUG_COUNT working again. Requires a small stub
	  function (Henrik Nordstrom).
	- Removed top-level Makefile.  People must now run 'configure'
	  before 'make'.
	- Fixed checkFailureRatio() implementation.
	- Made 'squid -z' behave like the 1.1 version.


Changes to squid-1.2.beta10 (Jan 1, 1998):

	- Fixed content-length bugs for 204 replies, 304 replies,
	  and HEAD requests (Henrik Nordstrom).
	- Fixed errorAppendEntry() bug in gopherReadReply().
	- Basic support for FTP URL typecodes (;type=X).
	- Support for access controls based on ethernet MAC addresses
	  (Dale).
	- Initial URN support; see
	  http://squid.nlanr.net/Squid/urn-support.html
	- Fixed client-side persistent connections for objects with
	  bad content lengths (Henrik Nordstrom).
	- Fixed bad call to storeDirUpdateSwapSize() for objects which
	  never reach SWAPOUT_DONE state.
	- Fixed up poll() #defines in squid.h (Stewart Forster).
	- Changed poll() timeout from 1000 msec to 50 msec for
	  better performance under low load (Stewart Forster).
	- Changed storeWriteCleanLogs() to write objects in the LRU
	  list order instead of the random hash table order.
	- Fixed FTP bug when data socket connections fail or timeout.
	- Reuse FTP data connection when possible (Henrik Nordstrom).
	- Added configure options (Henrik Nordstrom)
		--enable-store-key=sha|md5
		--enable-xmalloc-statistics
		--enable-xmalloc-debug
		--enable-xmalloc-debug-count 
		--async-io 
	- Fixed confusing with the use/meaning of ERR_CANNOT_FORWARD
	  by creating ERR_FORWARDING_DENIED and changing the
	  content of the ERR_CANNOT_FORWARD text.
	- Fixed pipeline request bug from using strdup() (Henrik
	  Nordstrom).
	- Call clientReadRequest() directly instead of commSetSelect()
	  for pipelined requests (Henrik Nordstrom).
	- Fixed 4k page leak in icpHandleIMSReply();
	- Renamed 'icp*' functions to 'client*' names in client_side.c.

Changes to squid-1.2.beta8 (Dec 2, 1997):

	- Fixed accessLogLog() to log ident from Proxy-Authorization
	  request header (BoB Miorelli).
	- Fixed #includes, prototypes, etc. in SNMP source files.
	- Moved 'POLLRDNORM' and 'POLLWRNORM' macro checks from
	  include/config.h.in to src/squid.h
	- Moved 'num32' typedefs from src/typedefs.h to
	  include/config.h.in.
	- Moved snmplib/md5.c to lib/md5.c.
	- Added MD5 cache key support.
	- Removed xmalloc() return check in uudeocde.c
	- Added 'ifdef' support to cf_gen.c for optional code (e.g. SNMP)
	- Changed 'client' program to provide easier cache manager access,
	  e.g.:	'client mgr:info'
	- Fixed 'client' to send 'Connection' instead of 'Proxy-Connection'
	  for simulated keep-alive requests.
	- Removed 'fd' arg from clientProcess* functions.
	- Fixed bugs from using errorSend() on persistent/pipelined
	  client connections.  A latter request should not be allowed to
	  write to the client fd until the current request completes.
	  Now use errorAppendEntry() for such situations.
	- Fixed content-length bugs.  We were using content-length == 0
	  to also indicate a lack of content-length reply header.  But
	  'content-length: 0' might appear in a reply, so now use -1 to
	  indicate that no content length given.
	- Split up clientProcessRequest() into smaller chunks so it
	  might be easier to follow.
	- renamed various client_side.c functions to start with 'client'
	  instead of 'icp'.
	- Fixed a 'cbdata leak' from the comm.c close handlers.
	- Fixed a 'cbdata leak' from the comm.c connect routines.
	- Fixed comm_select() and comm_poll() to stop looping on the
	  incoming HTTP/ICP sockets.  If there are fewer than 7 FD's
	  ready for I/O, the incoming sockets might not get service, so
	  comm_select() would be called for up to 7 times until the
	  'incoming_counter' was incremented enough to trigger a call
	  to comm_select_incoming().  Now we make sure
	  comm_select_incoming() gets called if select returns less
	  than 7 ready FD's.
	- Added errorpage '%B' token to generate FTP URLs with a '%2f'
	  inserted at the start of the url-path.  calls ftpUrlWith2f().
	  (Henrik Nordstrom).
	- Changed fqdncache.c to use LRU double-linked list instead of qsort()
	  for replacement and cachemgr output.
	- Changed ipcache.c to use LRU double-linked list instead of qsort()
	- Changed hash_insert() and hash_join() to return void.
	  for replacement and cachemgr output.
	- Moved StoreEntry->method member to MemObject->method.
	- Made StoreEntry->flags 16 bits.
	- Made StoreEntry->refcount 16 bits.
	- Changed URL-based public cache key to always include the request
	  method.

Changes to squid-1.2.beta7 (Nov 24, 1997):

	- Fixed poll() for Linux (David Luyer).
	- SHA optimizations (David Luyer).
	- Fixed errno clashes with macro on Linux (David Luyer).
	- Fixed storeDirCloseSwapLogs(); logs might not be open.
	- Fixed storeClientCopy2() bug.  Detect when there is
	  no more data to send for objects in STORE_OK state.
	- Fixed FTP truncation bug when ftpState->size == 0, e.g.
	  especially directory listings.
	- Mega FTP fix from Henrik Nordstrom.  A better job of
	  implementing the '%2f' hack.
	- Fixed some pipelined request bugs.  storeClientCopy() was
	  being given the wrong StoreEntry, and we had a race condition
	  which is now handled by storeClientCopyPending().
	- Added initial SNMP support.

Changes to squid-1.2.beta6 (Nov 13, 1997):

	- Fixed Authorized responses getting swapped out when they
	  don't have Proxy-Revalidate reply header.
	- Fixed Proxy Authentication support.  We never sent back
	  a 407 reply, and were incorrectly incrementing the passwd
	  before comparing it.
	- Fixed stat()ing pathnames for default values before parsing
	  config file (Ron Gomes).
	- Fixed logging request and response headers on separate lines
	  (Ron Gomes).
	- Fixed FTP Authentication message (Henrik Nordstrom).
	- Changed Proxy Authentication to trigger a reread of the passwd
	  file if a password check fails (Henrik Nordstrom).
	- Changed FTP to retry the first CWD with a leading slash if it
	  fails without one.

Changes to squid-1.2.beta5 (Nov 6, 1997):

	- Track the 'keep-alive ratio' for a peer as the ratio of
	  the number of replies including 'Proxy-Connection: Keep-Alive'
	  compared to the number of requests sent.  If the peer does
	  not support Persistent connections then this ratio will tend
	  toward zero.  If the ratio is less than 50% after 10 requests
	  then we'll stop sending Keep-Alive.
	- Proper support for %nn escapes in FTP, and numerous
	  other fixes (Henrik Nordstrom).
	- Support for Secure Hash Algorithm and framework for other
	  hash functions as cache keys.
	- Fixed SSL snprintf() bug which broke SSL proxying.
	- Fixed store_dir swap log bug from reconfigure (SIGHUP).
	- Fixed LRU Reference Age bug.  The arg to pow() must be
	  minutes, not seconds.

Changes to squid-1.2.beta4 (Oct 30, 1997):

	- Fixed DST bug in rfc1123.c
	- Changed default http_accel_port to 80.
	- added errorCon() as a ErrorState constructor function
	  (Max Okumoto).
	- Added ERR_FTP_FAILURE message for ftpFail().
	- For FTP, the timeout callback must be moved to the 'data'
	  descriptor when data transfer begins.  Otherwise we are
	  likely to get a timeout on the control descriptor.
	- Fixed double-free bug in httpRequestFree().
	- Fixed store_swap_size counting bug in storeSwapOutHandle().

Changes to squid-1.2.beta3 (Oct 29, 1997):

	- Initialize _res.options to RES_DEFAULT in dnsserver.c.
	- Fix assertions which assumed 4-byte pointers.
	- Fix missing % in fqdncache.c snprintf().
	
Changes to squid-1.2.beta2 (Oct 28, 1997):

	- Fixed aiops.c and async_io.c so that they actually compile
	  with USE_ASYNC_IO (Arjan de Vet).
	- Fixed errState->errno causing problems with some macros
	  (Michael O'Reilly).
	- Fixed memory leaks in pconn.c (Max Okumoto).
	- Enhanced 'client' program with 'ping' behaviour (Ron Gomes).
	- Fixed InvokeHandlers() from calling memCopy() for ALL
	  store_client's with callbacks.  A store_client might be reading
	  from disk.
	- Rewrote storeMaintainSwapSpace().  No longer will we scan one
	  bucket at a time.  Instead we'll maintain a single LRU
	  list.  When an object is 'touched' we move it to the
	  top of this list.  When we need disk space, we delete
	  from the bottom.
	- Removed storeGetSwapSpace().
	
Changes to squid-1.2.beta1 ():

	- Reworked storage manager to not keep objects in memory during
	  transit.  In other words, no separate NOVM distribution.
	- Lots of cleanup and debugging for beta release.
	- Use snprintf() everywhere instead of sprintf().
	- The 'in_memory' hash table has been replaced with a
	  doubly-linked list.  New objects are added to the head of
	  the list.  When memory space is needed, old objects are
	  purged from the tail of the list.

Changes to squid-1.2.alpha7 ():

	- fixes fixes fixes.
	- Made Arjan's PROXY_AUTH ACL patch standard.

Changes to squid-1.2.alpha6 ():

	- Simpler cacheobj implementation.
	- persistent connection histogram
	- SERVER-SIDE PERSISTENT CONNECTIONS:
        	- Added pconn.c 
        	- Addec Cofig.Timeout.pconn; default 120 seconds
        	- Added httpState->flags
        	- Added flags arg to httpBuildRequestHeader()
        	- Added HTTP_PROXYING and HTTP_KEEPALIVE flags
        	- Added 'Connection' to allowed HTTP headers (http-anon.c)
		- Added 'Proxy-Connection' to allowed HTTP headers
		  (http-anon.c)
		- Merged proxyhttpStart() with httpStart() and created
		  new httpBuildState().
		- New httpPconnTransferDone() detects end-of-data on
		  persistent connections.

Changes to squid-1.2.alpha5 ():

	- New configuration system.  Everything is generated from
	  'cf.data.pre', including the main parser, setting defaults,
	  outputting current values, and freeing memory.  
	  This also involved moving some of the local data structures
	  (e.g. struct _acl *AclList in acl.c) to the Config
	  structure.  (Max Okumoto)
	- No more '/i' for regular expressions.  Now insert a '-i'
	  to switch to case-insensitive.  Use '+i' for case-sensitive.
	- When you have a variable named the same as its type, sizeof()
	  gets the wrong one (fde).
	- Need to flush unbuffered logs before fork().
	- Added two fields swap log: refcount and e->flag.
	- Removed all the .h files for each .c file.  Now #include stuff
	  is in either: defines.h, enums.h, typedefs.h, structs.h,
	  or protos.h, globals.h.  This greatly reduces dependencies
	  between the various source files.
	- globals.c is generated from globals.h by a Perl script.
	- Started customizable error texts.

Changes to squid-1.2.alpha4 ():

	- New MIME configuration, regular expression based
	- Added request_timeout config option
	- Multiple HTTP sockets (Lincoln Dale).
	- Moved 'fds_are_n_free' check to httpAccept().
	- s/USE_POLL/HAVE_POLL/; make poll() default if available.
	- Changed storeRegister to use offsets and make immediate
	  callbacks if appropriate.
	- Removed icpDetectClientClose().  Some of that functionality
	  goes into clientReadRequest() and the rest into
	  httpRequestFree().
	- Moved IP lookups to commConnect stuff.
	- Added support for retrying connect().
	- New inline debug() macro (David Luyer).
	- Replace frequent gettimeofday() calls with alarm(3) based
	  clock.  Need to add more gettimeofday() calls to get back
	  high-resolution timestamp logging (Andres Kroonmaa).
	- Added support for Cache-control: proxy-revalidate;
	  based on squid-1.1 patch from Mike Mitchell.

Changes to squid-1.2.alpha3 ():

	- Implemented persistent connections between clients and squid.
	- Moved various FD tables (comm.c, fdstat.c, disk.c) to a single
	  table in fd.c.
	- Removed use of FD as an identifier in certain callback
	  operations (ipcache, fqdncache).
	- General code cleanup.
	- Fixed typedefs for callback functions.
	- Removed FD lifetime/timeout dichotomy.  Now we only have
	  timeouts, however the lifetime concept/keyword may still
	  linger in certain places.
	- Change Makefile 'realclean' target to 'distclean'
	- Changed config file parsing of time specifications to use
	  parseTimeLine().
	- Removed storetoString.c

Changes to squid-1.2.alpha2 ():

	- Merged squid-1.1.9, squid-1.1.10 changes

Changes to squid-1.2.alpha1 ():

	- Unified peer selection algorithm.
	- aiops.c and aiops.h are a threaded implementation of
	  asynchronous file operations (Stewart Forster).
	- async_io.c and async_io.h are complete rewrites of the old
	  versions (Stewart Forster).
	- Rewrote all disk file operations of squid to support
	  the idea of callbacks except where not required (Stewart
	  Forster).
	- Background validation of 'tainted' swap log entries (Stewart
	  Forster).
	- Modified storeWriteCleanLog to create the log file using the
	  open/write rather than fopen/printf (Stewart Forster).
	- Added the EINTR error response to handle badly interrupted
	  system calls (Stewart Forster).
	- UDP_HIT_OBJ not supported, removed.
	- Different sized 'cache_dirs' supported.

==============================================================================

Changes to squid-1.1.14 (July 11, 1997):

	- Another try at log_url crap.  Added icpState->log_url
	  member.  Set mem_obj->log_url in new_MemObject() which
	  means passing more args to storeCreateEntry().  Also added
	  urlClean() which calls urlParse(); needed for ICP logging.
	- Clean URLs will be truncated at '?' if present.
	- Give fd_note() the clean URL.

Changes to squid-1.1.13 (July 9, 1997):

	- Fixed storeLog() coredump on mem->log_url.
	- Fixed string bounds bug if a redirector returns a short
	  hostname which require appending 'append_domain' (David
	  Lamkin).
	- Added 'fake_user_agent' to configuration because HTTP
	  anonymizing strips the User-Agent which some servers require.

Changes to squid-1.1.12 (July 5, 1997):

	- Fixed dnsserver buffer overflow bug and other problems related
	  to long, bogus domain names.
	- Fixed occasional incorrect ERR_DNS_FAIL errors caused when
	  an IP cache entry gets released about the same time an
	  ICP query timeout occurs.
	- Fixed setrlimit() bugs seen on DUNIX 4.0; rl.rlim_max == 0.
	- Only strip 'Proxy-authorization' header when USE_PROXY_AUTH
	  is defined and proxy_auth is configured (Ron Gomes).
	- Added missing calls to reset socket timeouts for SSL
	  and passthrough requests.
	- Fixed "Available number of file descriptors" value in
	  cachemgr info output.
	- Fixed coredump in proxyAuthenticate() if password file
	  has an entry with only a user name (Jordan Hrycaj).
	- Security patch for usernames and passwords in URLs.
	  + ftpget would insert a BASE URL including the username and
	    password for directory listings IF the original request did
	    NOT include the the trailing slash.  This could be disabled
	    with a command line option, but is enabled by default.  Now
	    its #ifdefd out.
	  + Usernames and passwords could be logged to access.log and
	    store.log.  Now a new element,
	    StoreEntry->MemObject->log_url, holds a copy of the requested
	    URL without the name and password.  This isn't 100% fixed yet
	    because log_url gets generated when the StoreEntry gets
	    created.  If the StoreEntry never gets created, then the URL
	    with name and password will get logged.  Also, the name and
	    password are not stripped from ICP requests.  Also, this
	    changes store.log.  Previously we logged StoreEntry->key
	    which would look different than the URL for private entries,
	    but now we'll always log the URL.
	  + Finally, we now set REQ_AUTH for any request that includes a
	    name or password.  This prevents the request from being
	    cached (!) and prevents it from being sent to neighbor
	    caches.  In other words, its treated just as if an
	    Authorization request header were present.
	- Fixed Byte-Range handling so that valid, whole objects
	  are not released.

Changes to squid-1.1.11 (June 14, 1997):

	- Clean up NeXTStep compiler warnings (Karsten Heinze, Ed Knowles).
	- Don't forward 'Proxy-Authorization' headers (Chris Pascoe).
	- Fixed up Host: header parsing (Henrik Nordstrom).
	- Changed DefaultObjectsPerBucket to 20 in cache_cf.c.
	- Fixed parsePathname() bug for magic word "none".
	- Fixed ipcache_release to rename entries which get stuck with locks.
	- Fixed "eventDelete(peerCheckConnect, e);" bug when the DNS lookup
	  is pending.
	- Add sys/types.h to lib/safe_inet_addr.c for NeXTSTEP (Timo
	  Hennerich).
	- Fixed cur_len decrement bug in diskHandleRead()
	  (Michael O'Reilly).
	- Added contrib/rredir.pl from Peter Eisenhauer.
	- Always forward requests with 'Byte-Range' headers (Ron Gomes).
	- Fixed StoreEntry client offset bug which could trigger a
	  fatal_dump().
	- Fixed noticing that dnsservers have shut down during restart.
	- Added contrib/nextstep installer package from Gerben Wierda.
	- Modified storeDirClean() to remove swap files where the
	  number is being used, but the file is in the wrong directory.
	- Allow PURGE method on all protocols.
	- Added 'icp_hit_stale' option.
	- Fixed proxy auth refresh bug (Chris Pascoe).
	- Don't check for other filename extensions if an FTP URL
	  ends with .txt (Ed Knowles).
	- Relocated ERR_NO_CLIENT_BIG_OBJ check to eliminate incorrect
	  (but harmless) error message.

Changes to squid-1.1.10 (April 24, 1997):

	- Require 0 <= multicast ttl <= 128.
	- Changed 'unsigned int inaddr_none' to 'struct in_addr no_addr'.
	- Added debug_trap() if unlocking a StoreEntry which still 
	  has registered clients.
	- Added missing storeUnregister() calls.
	- Fixed storeClientListAdd() bug of adding same FD twice.
	- Fixed reconfigure/SIGHUP to wait 'shutdown_lifetime' seconds
	  after receiving signal (Ron Gomes).
	- Added missing commSetSelect() in icpDetectClientClose()
	  (Mark Treacy).
	- Fixed multicast group member counting bug with fake
	  StoreEntry's.
	- Only enable ICP_FLAG_SRC_RTT if the peer is ICP_VERSION_2.
	- Fixed compiling unlinkd in a separate directory (Assar Westerlund).
	- Fixed comm_select_incoming SEGV for poll() version when using
	  udp_{incoming,outgoing}_address  (Mark Treacy).
	- Fixed some SIGHUP related memory problems with redirectors,
	  ipcache, and fqdncache, and peerCountMcastPeers*().
	- Make the unlinkd and pinger programs configurable (Ron Gomes,
	  Neil Murray).
	- Add handshake to unlinkd program (Ron Gomes).
	- Exit if a configured program doesn't exist (Neil Murray).
	- Abort if unlinkd fails to start (Ron Gomes).
	- Added -m option to ftpget for defining default MIME type.
	  (Neil Murray).
	- Optimized comm_select() functions (Mark Treacy).
	- Fixed ipcache_release() to not release locked entries;
	  instead expire them immediately.
	- Fixed up rebuild code to handle swapfile/URL clash
	  cases better.
	- Added safe_inet_addr() to protect from bogus IP addresses
	  (Arjan de Vet).
	- Fixed handling of ssl_proxy and passthrough_proxy when not
	  behind a firewall.


Changes to squid-1.1.9 (March 30, 1997):

	- Fixed aclIpNetworkCompare for USE_SPLAY_TREE; was applying
	  netmask to non-local variable through pointer.  (Ansgar
	  Hockmann).
	- Fixed cachemgr bug incorrectly assigning connect() return
	  value (Nigel Metheringham).
	- Fixed diskHandleWrite bug: not setting write_daemon = PRESENT.
	- Fixed situation where all requests would be handled by
	  "single parent" and other peers would never be queried
	  again.
	- Fixed ftpget bug causing program to continue after printing
	  usage.
	- Changed 'reference_age' to be the maximum for the dynamcially
	  computed value (Mark Treacy).
 	- Added external 'unlinkd' process to unlink swap files.
	- Added more dnsserver status information to cachemgr output.
	- In httpReadReply: extend FD lifetime only after successful
	  read, not every read.
	- In httpBuildRequestHeader: link size of 'ybuf' to MAX_URL.
	- Added routines to count number of members of each multicast
	  peer.
	- Fixed multicast ICP bug causing unnecessary timeouts.
	- Added error messages if setuid/setgid functions fail.
	- Added non-POSIX tempnam.c replacement for NeXTStep (Gerben
	  Wierda).
	- Removed redundant file:// --> ftp:// check (Willy TARREAU).
	- Removed check for reply->code == 200 in icpGetHeadersForIMS().
	- Fixed IP cache bug which caused 'dns_children 0' to break;
	- Deny access to dangerous TCP ports (7, 9, 19).
	- Removed single-line functions: fdstat_biggest_fd(),
	  comm_get_fd_lifetime(), comm_get_fd_timeout().
	- Removed storeCheckExpired() from storeGetSwapSpace() as
	  likely cause of slowing down cache when exceeding the high
	  water mark.
	- Fixed storeCheckExpired() to not always check the
	  LRU expiration age (Mark Treacy).
	- Lowered 'store_objects_per_bucket' to 20 so that
	  storeMaintainSwapSpace() runs frequently enough to 
	  keep up with incoming objects.
	- Fixed FTP to use the Authorization header only when the
	  usernames match.
	- Fixed another continuation-lines-not-starting-with-NNN bug
	  in ftpget.
	- Added 'client_db' config option to disable keeping statistics 
	  for each client address.
	- Added support for using ICMP data stuffed into ICP replies
	  for peer selection algorithm.  Enable with 'query_icmp'
	  in squid.conf.
	- Fixed net_db design bug where _net_db_peer structures pointed
	  to 'peer' structures that get freed and reallocated during a
	  reconfigure.
	- Moved comm.c fd_lifetime[] array into FD_ENTRY structure.
	- Cleaned up storeCopy().  debug_trap on requested offset <
	  e_lowest_offset.
	- Cleaned up fdstat_init() and fdstat_update().
	- Cleaned up ftp_login_parser().

Changes to squid-1.1.8 (March 3, 1997):

	- Fixed neighborsUdpAck() coredump bug for source-ping and
	  non-peer ICP replies.
	- Prevent ipcache_gethostbyname from changing an IP_DISPATCHED
	  entry to IP_CACHED; fqdncache too.
	- Made send_announce non-blocking.
	- Force release of negative-cached objects upon receipt of
	  no-cache request.
	- Ignore ACLs which fail to parse.
	- Added 'proxy_auth_ignore' regular expression list (Andreas
	  Lamprecht).
	- Changed how failed TCP connections affects peer up/down
	  status.  Now retry TCP connections at regular intervals in the
	  background and don't mark the peer as 'up' until a connection
	  succeeds.
	- Okay to increase FD_SETSIZE on FreeBSD 2.2.x (Peter Wemm).
	- Fixed HTTP anonymizer bug in 'standard' mode.
	- Fixed aclMatchDomainList() coredump for unresolvable addresses.
	- Changed default disk low/high water marks to 90/95%.
	- Prevent ftpget buffer overflow (Riku Saikkonen).

Changes to squid-1.1.7 (February 25, 1997):

	- Fixed non-default port numbers for FTP URLs (John Saunders).
	- Fixed urlParse to leave trailing slashes on FTP URLs.  Although
	  stripping the slashes offers a slight hit rate increase, it
	  breaks some proxies which return HTTP redirects.
	- Initialize struct tm in parse_rfc1123() (Henrik Hempelmann).
	- Fixed parseHttpRequest() to use memcpy instead of strncpy;
	  caused POST's with NULL bytes to fail (Joe Ramey).
	- Fixed another HTTP reply code 0 bug (Neil Murray).
	- Changed code structure in ipcache_nbgethostbyname() to
	  maybe get around some trashed-stack problems.
	- Added WARNING if blocking gethostbyname() gets called.
	- Fixed calling commSetSelect() with FD < 0 bug in ssl.c and
	  pass.c.
	- Moved 'append_domain' operation to urlParse().
	- Fixed too many arguments bug in diskHandleWrite, caused
	  coredumps when write fails (due to full disk).
	- Fixed extra unlocking on partial reads from dnsservers.
	- Fixes for 'Splay' trees in acl.c (Ed Knowles)
	- Support for balanced binary trees in acl.c (Arjan de Vet).
	- Made HTTP anonymizing a standard feature and settable in
	  squid.conf (disabled by default).
	- Ignore ICP_MISS replies from multicast-responding parents
	  which would violate the domain restrictions.
	- Fixed another diskHandleWrite coredump bug when freeing
	  list of pending blocks.
	- Added support for 'src' ACLs in cache_host_acl lines.
	- Fixed ftpget bug when PASV connect times out.
	- Fixed adding duplicate IP cache entry for failed BLOCKING lookups.
	- Changed peer IP addresses (for ICP) to be refreshed every hour.
	- Accomodated Solaris bug requiring suid privs for getrusage()
	  (Arjan de Vet).

Changes to squid-1.novm.6 (February 7, 1997):

	- Merged squid-1.1.6 changes.

Changes to squid-1.1.6 (February 7, 1997):

	- Fix redirector to make sure the redirector child process is 
	  is alive and not busy before using it (Brent Foster).
	- Fixed ACL joining bug.
	- Fixed up support for multicast; see Release Notes for 
	  details.
	- Fixed ftpget to properly handle multi-line replies that
	  don't begin with "NNN-".
	- Changed store maintenance to randomize bucket order
	  each time after completion.
	- Set RLIMIT_VMEM to the maximum.
	- Syntax change: "edge" to "peer" everywhere.
	- Change redirector stats to also show number of rewritten
	  requests (Andrew Humphrey).
	- Changed HTTP anonmyizing to remove 'denied' headers
	  by default.  Define USE_PARANOID_ANONYMIZER to only pass
	  'allowed' headers instead (Bernd Ernesti).
	- Added 'Splay' trees (in #ifdefs) for fast IP access checking
	  (Ed Knowles).
	- Fixed 'COMM_INPROGRESS' typo bug (Balint Nagy Endre).
	- Added support for PURGE method to remove cached objects.
	- Upgraded scripts/check_cache.pl for v1.1 (Bertold Kolics).
	- Fixed announcement file descriptor leak (Balint Nagy Endre).
	- Fixed [^0-9] sscanf bug for some compilers (Jim Carroll).
	- Upgrade to autoconf-2.12
	- Added 'dns_defnames' option to allow dnsserver to interpret
	  single-component hostnames.
	- Refuse to run as root without defining 'cache_effective_user'.

Changes to squid-1.novm.5 (February 6, 1997):

	- Fixed stuck objects (and FD leak) due to not unlocking
	  objects in storeAbort().
	- Merged squid-1.1.5 changes.

Changes to squid-1.1.5 (January 22, 1997):

	- Fixed ACL parsing to join ACL entries with the same name
	  (Markus Stumpf).
	- Fixed BIT_SET/BIT_TEST typo in getDefaultParent() (Ed Knowles).
	- Removed comm_read() and commHandleRead().
	- Fixed rotating special files (Kolics Bertold).
	- Fixed sending HTTP reply code 0 in error messages.
	- Fixed ftpget to recognize 'NetWare' servers and skip whitespace
	  before filenames.
	- Changed ftpget default Content-Type to application/octet-stream.
	- Added .rpm MIME type (Nigel Metheringham).
	- Changed storeDirClean() to create missing directories.
	- Removed icpState->buf and storeCopy() call in icpGetHeadersfForIMS().
	- Fixed *_ip_list parsing bug (Hiroyuki Inoue).
	- Fixed bad comm_write() calls in passStart() and sslStart()
	  (Martin Boening).
	- Changed storeMaintainSwapSpace() to scan hash table buckets in
	  random order.
	- Added dynamic LRU Age expiration feature.  Expiration age is
	  calculated as a function of store_swap_size so that object
	  deletion rate matches the addition rate and we avoid emergency
	  object purge mode.

Changes to squid-1.novm.4 (January XX, 1997):

	- Fixed storeRegister loop in icpHandleIMSReply().
	- Merged squid-1.1.4 changes.

Changes to squid-1.1.4 (January 13, 1997):

	- Created USE_GNUREGEX define to fix forcing GNU regex on 
	  Solaris and NeXTStep.
	- Changed SQUID_MAXFD to be a C variable.
	- Added QUICKSTART file.
	- Fixed ident so the identd request comes from the same IP
	  address as the original connection was made to (Russell
	  Street).
	- Added '!' condition feature for the 'firewall_ip' list
	  (Hiroyuki Inoue).
	- Added 'udp_hit_obj_size' option (Mark Treacy).
	- Fixed cachemgr.cgi to print 'NEVER' instead of '27Y ago'.
	- Fixed finding FTP end-of-transfer marker in the middle
	  of the file.
	- More ipcache fixes for long-pending requests which get preempted.
	- Fixed cachemgr.cgi to parse password from URL (Peter Wemm).
	- Fixed cachemgr.cgi to keep password in HTML form field (Peter
	  Wemm).
	- Fixed reporting Maximum Resident Size (Peter Wemm).
	- Handle unexpected data from a redirector (Brent Foster).

Changes to squid-1.novm.3 (January 7, 1996):

	- Merged squid-1.1.3 changes.

Changes to squid-1.novm.2 (January 7, 1996):

	- Mega changes to make Squid not store objects in VM.

Changes to squid-1.1.3 (January 7, 1997):

	- Changed inet_addr("X") to inet_addr("255.255.255.255")
	  (Dan Riley).
	- Fixed matchInsideFirewall() bug when using 'firewall_ip' but
	  not 'inside_firewall' (Tai Jin).
	- check for text == NULL in icpSendERROR().
	- Don't make inaddr_none static in ftpget.c (Davide Migliavacca).
	- Fixed ipcache FMR bug for long-pending requests.
	- Fixes for NeXTSTEP 3.3 (Tethpub Znek).
	- add storeWriteCleanLog() call in fatal().

Changes to squid-1.1.2 (December 18, 1996):

	- Fixed (negative) caching of HTTP objects witch consist of
	  only some HTTP headers.
	- Fixed up SSL neighbor selection algorithm to be just
	  like the one in pass.c.
	- Fixed incorrect squid.conf comment about setting an objcache
	  password to 'none'.  Added keyword 'disable' to disable an
	  objcache function (Markus Gyger).
	- Further Cache.Announce.on fixes (Ernest Yik).
	- Add theOutIcpConnection to comm_select_incoming() for improved
	  ICP performance (Stewart Forster).
	- Added access.log documentation to Release-Notes-1.1.txt
	- Added support for TRACE method.
	- Added 'log_icp_queries on|off' to config (David Luyer).
	- Added hierarchy tag to common HTTP format access.log (David Luyer).
	- Moved second SQUID_MAXFD/FD_SETSIZE check to after #includes.
	- Added reverse DNS lookups for 'dstdomain' ACLs when the URL
	  contains an IP address.
	- Made HTTP reply header parsing more robust to deal with
	  bad 304 replies from squid-1.1.beta27 and earlier.
	- Changed reqnum passed in ICP replies to encode request method
	  in high byte.
	- Fixed neighbor round-robin bug (Uwe Doering).
	- Calculate accurage percentages for ICP and HTTP requests in
	  cachemgr 'client list'.
	- Fixed refresh lm-factor calculations to allow percent = 0.
	- Make sure DNS lookups don't remain PENDING for a very long time.

Changes to squid-1.1.1 (December 15, 1996):

	- Fixed announcement bug.  Announcements were always off unless
	  a file was specified.
	- Fixed wrong number of args to examine_select() debug.
	- Fixed null-string content-type
	- Don't cache replies with 'Set-Cookie:' headers.
	- Fixed bug when client issues IMS, Squid has stale object and
	  Squid's lastmod time is greater than the client IMS time.
	  A 304 reply would be appropriate for Squid, but not the client
	  (diagnosed by Mark Treacy).
	- Fixed httpBuildRequestHeader() content length bug which breaks for
	  really large POST requests (Takahiro Yugawa).
	- Fixed 'passthrough_proxy' to pick up port number from list of
	  neighbors.
	- Ensure pid file is world-readable if umask is set otherwise
	  (Doug Urner).
	- Collect statistics on a few more HTTP headers (Ed Knowles).

Changes to squid-1.1.0 (December 6, 1996):

	- Fixed inequality bug in neighborUp().
	- Fixed off-by-one ack_deficit bug in neighborUp() (Joe Ramey).
	- Fixed pfds[] ABW bug for USE_POLL (Joe Ramey).
	- Added anonymizer options; compile with USE_ANONYMIZER (Lutz
	  Donnerhacke).
	- Added Gauntlet proxy support to ftpget (Mukaigawa Shin'ichi).
	- Changed UDP_HIT_OBJ to be disabled by default.
	- Updated doc/Release-Notes-1.1.txt

==============================================================================

Changes to squid-1.1.beta28 (December 5, 1996):

	- Fixed missing CR on Not-Modified replies (Balint Nagy Endre)
	- Fixed not truncating multi-word content-types.
	- Fixed ABR bug due to too-small redirector buffers.
	- Fixed ABR in httpBuildRequestHeader().
	- Removed asynch_io code.

Changes to squid-1.1.beta27 (December 4, 1996):

	- Fixed wrong number of args to debug().
	- Make failure to start any dnsservers fatal.
	- Fixed dnsGetFirstAvailable() to skip dead dnsservers.
	- Fixed loop detection for two squids on the same host (Mark
	  Treacy)
	- Fixed strcasecmp bug which broke some POST requests.

Changes to squid-1.1.beta26 (December 3, 1996):

	- Another 'rm -rf' fix for store.c (Bernd Ernesti).
	- Use of the Host: header for httpd_accel requests is now
	  disabled unless 'httpd_accel_uses_host_header' is set.
	- Have configure check for libgnumalloc.a.
	- Added support for using poll() instead of select(); enable
	  USE_POLL_OPT in src/Makefile (Stewart Forster, Anthony
	  Baxter).
	- Fixed httpBuildRequestHeader() 'strcat' bug (Andres Kroonmaa).
	- Changed store.log to include date, last-modified, and
	  expires timestamps, plus content-type.
	- Added content-type to access.log too.
	- parse HTTP timestamps directly in httpParseReplyHeaders().
	- moved timestampsSet() to storeTimestampsSet().
	- fixed ACL '/32' bug (Ansgar Hockmann).

Changes to squid-1.1.beta25 ():

	- Check if we should delete-behind large objects when above LOW
	  water mark.
	- Merged request header parsing code from http.c and pass.c
	  into httpBuildRequestHeader().
	- Fixed 'rm -rf' command in store.c.
	- Changed viz_hack stuff to use multicast.

Changes to squid-1.1.beta24 ():

	- Added 'cache_stoplist_pattern' to squid.conf
	- Remove trailing slashes from FTP URLs.
	- Added 'passthrough_proxy' support.
	- Added "default parent" support with a 'default' option for
	  cache_host config line.
	- Upgraded autoconf to 2.10.
	- Strip Proxy-Connection request headers.
	- Do not return UDP_HIT for objects which will soon be stale.
	- Parse/Filter HTTP request headers in passthrough module.
	- Fixed parsing hostnames with dashes in 'src' ACLs.
	- Added warning message when forwarding loops detected.
	- Split getSingleParent() into getSingleParent() and
	  neighborsCount().
	- Dont check sibling caches for REFRESH requests.
	- Add X-Forwarded-For: header which is the comma-separated
	  list of client addresses along the request path.
	- Fixed icpDetectClientClose() to check if Content-Length
	  bytes have been delivered.

Changes to squid-1.1.beta23 (November 25, 1996):

	- Fixed "viabuf" memory leak.

Changes to squid-1.1.beta22 (November 25, 1996):

	- Fixed xstrncpy() bug in mime_get_header().
	- Fixed Via: header.
	- Fixed Host: header for proxy requests.
	- Fixed re-initializing client_db and net_db hash tables upon
	  SIGHUP (Cord Beermann).
	- Mucked with regex stuff so HP users don't have to put up with
	  GNUregex (Markus Gyger).
	- Changed SQUID_MAXFD back to FD_SETSIZE.
	- Fixed checking Max-age in httpSendRequest().
	- Made failure to fork ftpget fatal.
	- Call *FreeMemory() routines only if debugging.

Changes to squid-1.1.beta21 (November 22, 1996):

	- Fixed setting entry->timestamp for NOT MODIFIED replies.
	- Changed old HTTP/1.1 Forwarded: header to new Via:.
	- Fixed needlessly calling storeSwapFullPath() in
	  storeSwapOutHandle() (Mark Treacy).
	- Simplified hash linking (Mark Treacy).
	- Write pid_filename by default (Markus Gyger).
	- Changed "Invalid dnsserver output" to non-fatal debug_trap()
	  (Joe Ramey).
	- Changed STORE_IN_MEM_BUCKETS to the prime 229 (Neil Murray).
	- Changed FD_SETSIZE to SQUID_MAXFD (Jonathan Larmour).
	- Strip :port from Host: header if present.
	- Reschedule fqdncache_dnsHandleRead() to prevent dnsservers
	  from getting stuck (Makoto Ishisone).
	- Fixed handing SSL requests inside firewalls (Akira Sato).
	- Fixed passthrough neighbor selection bug (Akira Sato).
	- Removed 'post_buf' stuff from http.c.

Changes to squid-1.1.beta20 (November 17, 1996):

	- Changed neighbor_domain_type to neighbor_type_domain in
	  squid.conf.
	- Changed all 'xstrerror' debug messages to section 50.
	- More const fixes (Markus Gyger).
	- Added xstrncpy() which null-terminates (Markus Gyger).
	- Fixed Cache-Control counting in HTTP reply header stats.
	- Relocated rfc1738_unescape() calls in ftpget so that
	  ftp://foo.org/%2fbar/ works (Jonathan Larmour).
	- Fixed forwarding loop for a pair of neighbors behind a firewall.
	- Cleaned up ftpget non-blocking flags (Jean-Hugues ROYER).

Changes to squid-1.1.beta19 (November 13, 1996):

	- Fixed havoc-wreaking getsockname() bug (Noriyuki Soda
	  <soda@sra.co.jp>).
	- Fixed InvokeHandlers() debug_trap bug.
	- Lock entry while calling swapin handler in case someone tries to
	  release it.
	- Changed configure to allow overriding of XTRA_LIBS in config.site.
	- Fixed comm_accept() FMR bug.
	- Replaced MemObject->fd_of_first_client structure member with
	  storeFirstClientFD() function.

Changes to squid-1.1.beta18 (November 13, 1996):

	- Fixed 'void *buf' bug icpCreateMessage() (Jean-Hugues ROYER).
	- Fixed more NULL 'friends' bugs.
	- Added debug_trap for NULL mem->clients in InvokeHandlers()
	  (Mark Treacy).

Changes to squid-1.1.beta17 (November 12, 1996):

	- Fixed NULL friends coredump in neighbors_open().
	- Added setting HAVE_TEMPNAM back to the configure script.
	- Fixed h_errno bug on NeXTStep (frank@langen.bull.de).
	- Fixed expiresMoreThan() bug causing all UDP_MISS replies.
	- Changed 'background.c' to 'event.c' and merged all periodic
	  functions into an event queue.
	- Renamed httpParseHeaders() to httpParseReplyHeaders().
	- Added support for sending HTTP/1.1 'Cache-Control: max-age=X'
	  in requests.  The max-age value is taken from the
	  'refresh_pattern' rules.
	- Added support for parsing max-age in client request.
	- Split icpUdpSend() into simpler icpUdpSend() plus
	  icpCreateMessage().
	- Force storeAbort() for dispatched objects in
	  asciiLifetimeHandle().
	- Fixed firewall-related bug when the DNS lookup fails.
	- Fixed '#define HAVE_GETRUSAGE' bug (Takahiro Yugawa).
	- Made storeStartDeleteBehind() quiet for 'no-proxy' neighbors.
	- Fixed log_quote() signed/unsigned bug (Ron Gomes).

Changes to squid-1.1.beta16 (November 8, 1996):

	- Fixed type of Config.level{One,Two}Dirs.
	- Fixed calling storeRegister and storeUnregister with NULL a entry.
	- Fixed objcache "squid.conf" request and now require a
	  password for it (Jan.Harkes@cwi.nl).
	- Added check for dotted-quads in matchInsideFirewall()
	  (Andreas Lamprecht).
	- Fixed up some HTTP/1.1 Cache-Control parsing (Ed Knowles).
	- Fixed IP ACL memset() bug when -DPURIFY=1.
	- Resurrected storeEntryValidToSend().
	- Moved storeSetPrivateKey() calls to storeReleaseRequest().
	- Added separate config line (neighbor_type_domain) for modifying
	  neighbor type (parent vs. sibling) for certain domains.  Adding
	  it to cache_host_domain doesn't provide needed flexibility.
	- Added User-Agent log patch (Joe Ramey).
	- Added httpd-accel Host: patch (Miguel A.L. Paraz).
	- Changed ident lookup stuff to require the lookup before
	  checking ACL's.  If you have 'ident_lookup on' then this
	  may cause noticable delay while waiting for the ident
	  lookup.
	- Fixed storeSwapOutHandle() FMR bug.
	- Stopped inserting incorrect Host: header for proxy-HTTP requests.

Changes to squid-1.1.beta15 ():

	- Fixed entry->clients[].fd initialization bug causing all
	  large objects to get stuck.
	- Changed /www.nlanr.net/Squid/ to /squid.nlanr.net/Squid/.

Changes to squid-1.1.beta14 ():

	- Added pw_encrypt() check to configure.
	- Added 'cache_stop_relist' for a regular expression based
	  stoplist.
	- Fixed checkRefresh() to not cause IMS request for objects
	  which have not yet expired, but are past the LM-factor.
	- Fixed asciiConnLifetimeHandle() to force storeAbort() for
	  pending objects.
	- Made lots of variables and args 'const' (Markus Gyger).
	- Added cachemgr password support in squid.conf (Yaroslav M.
	  Levchenko).  Each cachemgr operation may have a separate
	  password.  Shutdown and all "log" operations must be
	  password-protected.
	- Removed debug_trap() calls in squid_error_entry().
	- Removed InvokeHandlers() call from StoreAbort().
	- Added icpHandleAbort() to deliver abort messages, if at all.
	- Added passthrough module (pass.c) for POST, et. al.
	- Fixed purify bugs in storeCloseLog() and storeSwapInHandle().
	- Merged store 'pending list' into 'client list.'
	- Made number of first- and second-level swap directories
	  configurable (Ralph Loader).

Changes to squid-1.1.beta13 (November 1, 1996):

	- Fixed base64_code[] typo bug (Joe Ramey).
	- Fixed errors being returned as empty objects.
	- Changed order of sanity checks in neighborsUdpAck().
	- Made swap log pathname configurable with 'store_swap_log'.
	- Made 'http_accel virtual 80' same as -V on command line.
	- Fixed string termination bug in base64_decode() (Joe Ramey).

Changes to squid-1.1.beta12 (October 31, 1996):

	- Fixed ICMP 'pinger' failure detection.
	- Fixed handling of no-cache for negative-cached objects.
	- Replaced protoUnregister() call in icpDetectClientClose().
	- Fixed calling storeReleaseRequest() on unlocked objects.

Changes to squid-1.1.beta11 (October 29, 1996):

	- Fixed rfc1123() to use actual RFC1123 time format.
	- Made Store Hash parameters configurable
		- store_objects_per_bucket
		- store_avg_objects_size
	- Fundamental changes to object TTLs; now think in terms of
	  refresh times.  Replaced 'ttl_pattern' with 'refresh_pattern'.
	- Dropped 'http', 'ftp', and 'gopher' config options.
	- Added a single 'maximum_object_size' value.
	- Moved storeStartDeleteBehind() calls from http/ftp/gopher to
	  storeAppend().
	- Moved storeClientListAdd() call from store to client/icp
	  because of storeClientCopy() race condition between IMS
	  replies and objects in delete behind mode.
	- renamed TCP_EXPIRED* to TCP_REFRESH*.
	- Stopped appending error messages to partially delivered
	  objects.
	- Removed protoUnregister() call in icpDetectClientClose()
	  as probable cause of storeReleaseRequest() warnings.
	
Changes to squid-1.1.beta10 (October 24, 1996):

	- Fixed neighborsUdpAck() coredump bug and made debug messages
	  more consistent.
	- Removed old REQ_ACCEL test (Miguel A.L. Paraz)
	- Fixed process RSS value for SGI (Ed Knowles).
	- Fixed parseAddressLine() to use gethostbyname(3) because
	  its called before ipcache_init(). (Miguel A.L. Paraz)
	- Fixed announce bug since beta7 causing caches to be announced
	  regardless of 'announce_to' setting.  (Paul Southworth)
	- Fixed pinger 'last_check_time' bug.
	- Changed storeEntry->flag and storeEntry->refcount back to
	  32-bit ints.
	- Removed extra "\r\n" for abort error messages.
	- Numerous hash fixes from Mark Treacy.
	- Renamed rfc850 to rfc1123.
	- Changed storeRelease to not make recursive call for HEAD
	  objects.
	- Changed return value semantics of storeRelease().

Changes to squid-1.1.beta9 (October 21, 1996):

	- Added 'make depend' target to Makefiles.
	- Fixed changing the wrong instance of 'opt_catch_signals'
	  in tools.c for beta8.
	- Fixed xmemcpy macros in include/config.h (Ed Knowles).
	- Fixed logging of "TCP_EXPIRED_MISS/304."

Changes to squid-1.1.beta8 ():

	- Added client_db.c; keeps stats on clients, use cachemgr
	  to view client list.
	- Stop sending ICP_OP_DENIED to clients if 95% of their
	  queries are denied (then they'll think we're dead).
	- Fixed objects getting stuck in VM when handling aborted
	  requests in icpHandleIMSReply().
	- If IMS verification fails, send the old object and log it
	  as TCP_EXP_FAIL_HIT.
	- Added Host: header to HTTP requests.
	- Disable dnsservers with 'dns_children 0' in the config file.
	- Disable ftpget with 'ftpget_program none' in the config
	  file.  Also ftpget is disabled for http_accel mode.
	- Changed cachemgr stats/objects listing format.
	- Added some missing "entry->refcount++"
	- Changed StoreEntry->timestamp to be the last verification time.
	  (was the stored-on-disk time).
	- Fixed stuck objects from "304 Not Modified" responses without
	  final blank line.
	- Added failure detection to icmpRecv().
	- Fixed backwards logic in debug_trap().
	- Fixed neighbor caches remaining in 'DEAD' state.  Reorganized
	  handling ICP replies so neighborsUdpAck gets called for
	  most every reply.

Changes to squid-1.1.beta7 (October 14, 1996):

	- Combined and renamed comm_set_select_handler() functions.
	- Fixed netdbPingSite() not checking n->next_ping_time.
	- Fixed acl.c to use regular gethostbyname() because IP cache
	  isn't initialized while reading config file.
	- Linked ftpget with debug.o and removed lib/debug.c,
	  lib/log.c.
	- Fixed matchDomainName() coredump for late ICP packets.
	- Removed date string from syslog messages.
	- Fixed ftpget BASE HREF.
	- Fixed pinger to check squid socket every 10 seconds.

Changes to squid-1.1.beta6 ():

	- Fixed lots of function prototypes, etc (Ed Knowles).
	- Added multicast patch (Martin Hamilton).
	- Replaced 'struct hostent' with 'struct ipcache_addrs' in IP
	  cache.
	- Added ipcacheCycleAddrs() to round-robin IP addresses.
	- Added ipcacheRemoveBadAddr() to remove addresses from failed
	  connect()'s.
	- Changed comm_connect() to comm_nbconnect() and removed other
	  nonblocking connection handling code from other modules.
	- Improved cache memory usage.  Now cache_mem specifies the
	  size of the in-memory data pool.  Hot objects use whatever
	  space is not used by in-transit objects.
	- Removed 'max_hot_object_size' config option.
	- Fixed virtual-host coredump bug (Aaron Hopkins).

Changes to squid-1.1.beta5 (October 7, 1996):

	- Fixed coredump in storeFreeMemory().
	- Fixed displaying repeated IP addresses in IP cache contents.
	- Added parent/sibling modifiers to cache_host_domain lines.
	- Added 'miss_access' to restrict fetching HTTP MISS requests.
	  Use this to force your peer caches to use you as a sibling and
	  not as a parent.
	- Added browser ACL patch (Carson Gaspar).
	- Added reading ACLs from file patch (Arjan de Vet).
	- Squid-1.0 changes up to 1.0.18.
	- Added release/cleanup functions to net_db.c.
	- Added 'minimum_direct_hops' config option.

Changes to squid-1.1.beta4 (September 26, 1996):

	- Fixed coredump in icpStateFree() when calling
	  checkFailureRatio().
	- Added more stuff to net_db.c.
	- Fixed memory leak in stat_ipcache_get().
	- Changed __P back to _PARAMS.
	- Fixed authorization parsing bug in ftp.c (Yoichi Shinoda).
	- Allow ICP socket on priveledged ports.
	- Added trap for STORE_PENDING objects when lock_count == 0.
	- Replaced 'cache_hot_vm_factor' with 'max_hotvm_obj_size'.
	- Moved ICMP socket to external 'pinger' program.
	- Moved tvSubMsec() to lib/util.c.
	- Moved accessLogTime() to debug.c.
	- Fixed handling of race condition in icpHandleIMSReply().
	- Fixed "\r\n\0" bug in gopherSendRequest();
	- Fixed cachemgr output for non-table browsers (Cord Beermann).
	- Moved accept() for dnsserver into Squid.
	- New SVR4 config stuff in contrib directory (Markus Gyger).
	- Includes squid-1.0 changes up to 1.0.17.
	- Fixed storeWriteCleanLog() bug which caused released objects
	  to be kept.
	- Added *FreeMemory() routines.

Changes to squid-1.1.beta3 (September 16, 1996):

	- s/()/(void)/
	- Fixed 8k page leak in icmpRecv().
	- Use strerror() if available instead of sys_errlist[].
	- Misc ANSI-related cleanup.
	- Added 'cache_stoplist' to specify things which should
	  never get saved to disk.
	- Merged some parsing routines into parseWordlist().
	- Fixed icpHandleIMSReply() bug when HTTP reply headers
	  received in multiple reads.
	- Changed all ipcache_nbgethostbyname() handler functions
	  to be void.
	- Fixed bug when storeLockObject() fails for UDP_HIT_OBJ
	  replies.
	- Simplified storeGet().
	- Removed meta_data.hash_links member.
	- Includes squid-1.0 changes up to 1.0.16.
	- s/__STRICT_ANSI__/__STDC__/g

Changes to squid-1.1.beta2 (September 12, 1996):

	- Switched to ANSI style coding.
	- Fixed UDP_HIT_OBJ objects ignoring 'proxy-only' setting.
	- Added setting cachemgr.cgi fields from query string
	  (Neil Murray).
	- Split log type TCP_IFMODSINCE into TCP_IMS_HIT and
	  TCP_IMS_MISS
	- Replaced proto_hit() and proto_miss() with proto_count()
	  which looks at log_type argument to calcultate hits
	  and misses.
	- Split CacheInfo into HTTPCacheInfo and ICPCacheInfo.
	- Placed call to proto_count() just after log_append()
	  so we only need it in one place.
	- Made a lot of proto.c functions static and added prototypes.
	- Fixed icpProcessRequest() bug.  Need to check EXPIRED
	  before IMS.
	- Fixed aclDestroyDenyInfoList() to NULL free'd lists.
	- Fixed storeDirClean() to unlink files which should be
	  directories (Cord Beerman).
	- Added ICMP support.  Source ping will use ICMP packets if
	  compiled with -DUSE_ICMP=1 and started with root privleges.

Changes to squid-1.1.beta1 (September 12, 1996):

	- Fixed stupid coredump bug in storeGetSwapSpace().
	- Cleaned up gopher.c; prototypes, make functions static, etc.
	- Added READ_DEFERRED entry flag.  Only extend lifetime when
	  first entering deferred mode.
	- Added debug_trap() to replace some fatal_dump()'s.  Now use
	  debug_trap for non-fatal errors.  If -C option is set,
	  then debug_trap is the same as fatal_dump.

Changes to squid-1.1.alpha18:

	- Fixed storeCheckPurgeMem() to both 'purge' *and* 'release'
	  objects as needed. 
	- Fixed up RWStateCallbackAndFree() to prevent it from getting
	  called twice.
	- Added 'deny_info' support for redirecting denied requests to
	  a specific URL (maex@space.net).  
	- Fixed protoUnregister() to not abort objects being swapped in.
	- Fixed parent-stays-dead-bug by removing PING_WAITING
	  check in icpHandleIcpV?().
	- Changed debug log timestamp format.
	- Fixed coredump-causing bugs in icpHandleIMSReply().
	- Fixed FMR bug in neighborsUdpAck() for UDP_HIT_OBJ replies.
	- Fixed up InvokeHandlers() to clear handler before calling.
	- Added -k signal option to signal a running Squid (Markus Gyger).
	- Removed dynamic_array code.

Changes to squid-1.1.alpha17:

	- Added more IMS support.  Now Squid issues IMS requests for
	  expired objects in the cache.  Log type will be either
	  TCP_EXPIRED_HIT if the server sends "304 Not Modified" or
	  TCP_EXPIRED_MISS if the server send a new object.
	- Added Config.expireAge and 'expire_age' to config.
	- Fixed storeGetMemSpace() bug; need to check
	  storeCheckPurgeMem() instead of storeEntryLocked().
	- Renamed icp_hit_or_miss() to icpProcessRequest().
	- Changed mkrfc850() to use normal variable instaed of a
	  pointer.
	- Removed store_entry member from fd_table[] in comm.h.
	- Changed httpSendRequest to not tack Squid onto the 'User-Agent'
	  line, Use HTTP/1.1 'Forwarded' instead.
	- Removed icpProcessHIT() which only called icpSendMoreData().
	- Removed icpProcessIMS() which only called icpGetHeadersForIMS().
	- Removed some 'Reset header fields for reply' crap.
	- added old_entry member to icpStateData for handling IMS
	  requests.
	- Added 'locks' member to ipcache_entry; need to lock an
	  ipcache entry during ipcache_call_pending().
	- Removed ipcache_call_pending_badname().
	- Cleaned up setting/clearing IP_LOOKUP_PENDING bit.
	- Removed storeEntryLocked() trap in storePurgeMem().
	- Added storeCheckExpired().
	- Removed storeWalkThrough() and removeOldEntry(), changed
	  storePurgeOld() to do the walking through instead.
	- Added storeConfigure() so HUP signal affects store_swap size.
	- Replaced some parsing functions with parseMinutesLine().
	- Added StoreEntry flag bit ENTRY_NEGCACHED.
	- Added storeNegativeCache().

Changes to squid-1.1.alpha16:

	- Fixed ipcache TTL bug from new ipcache_parsebuffer().
	- Copied recent ipcache.c changes to fqdncache.c
	- Copied icpHandleIcpV2() fix to icpHandleIcpV3().
	- incorporate squid-1.0.12 changes.

Changes to squid-1.1.alpha15:

	- Removed 'bad swap_status' trap in icpHandleIcpV2.
	  Now skip ICP replies for StoreEntry's with ping_status
	  != PING_WAITING.
	- Fixed numerous compiler problems.

Changes to squid-1.1.alpha14:

	- Fixed ENTRY_DISPATCHED bug.  ENTRY_DISPATCHED was not always
	  getting set (e.g. for requests matching hierarchy_stoplist).
	  This could cause multiple calls to storeAbort() for the same
	  entry.
	- With ENTRY_DISPATCHED now fixed, call squid_error_entry()
	  from protoUnregister() for StoreEntries which have not
	  been dispatched.
	- Fixed 'quick_abort' parsing bug.
	- NULL terminate too-long URL strings in urlParse().  Still
	  need fix to somehow handle these.
	- Added shadow password patch from John Saunders
	  <johns@rd.scitec.com.au>
	- Added _dns_ttl_ hack from bne@CareNet.hu to get real TTL
	  values from DNS queries.  See Release-Notes-1.1.txt for more
	  info.
	- Added better '304 Not Modified' reply from Jaeyeon Jung
  	  <jyjung@cosmos.kaist.ac.kr>.
	- Rewrote ipcache_parsebuffer().
	- Fixed stupid clientProxyAuthCheck() bugs.
	- Made IP cache size configurable with 'ipcache_size'.
	- Fixed bug parsing 'cache_swap_low'.
	- Added -b option to ftpget to limit data transfer rate
	  (bytes/sec).  Specify on 'ftpget_options' in config file.
	- Miscellaneous filedescriptor management cleanup.
	- Renamed function getFromCache() to protoStart().
	- Added delays when forking dnsservers, redirectors, and
	  ftpget.
	- Includes 1.0 changes up to 1.0.11.

Changes to squid-1.1.alpha13:

	- oops, there was no alpha13.

Changes to squid-1.1.alpha12:

	- Rewrote storeGetMemSpace().
	- Fixed hot_vm accounting; only count objects which are added
	  to the IN_MEMORY table.
	- Changed protoUndispatch() to never call squid_error_entry().
	  Should fix storeSwapOutHandle() and 'HELP! Someone is
	  swapping out a bad entry' coredumps.
	- Report all error pages to the debug log.
	- Added -i option which forces IP cache entry to be invalidated
	  just after an object retrieval begins.
	- Includes all squid-1.0 changes up to squid-1.0.10.
	- Added patch from srb@cuci.nl (Stephen R. van den Berg) for
		- ttl_force_pattern
		- quick_abort min pct max
	- Added a proxy authentication patch from Jon Thackray
	  <jrmt@uk.gdscorp.com>.  Must add -DUSE_PROXY_AUTH=1 to src/Makefile.
	- Cleaned up calling maintenance functions from main().

Changes to squid-1.1.alpha11:

	- Fixed sscanf() bug in storeDirClean()
	- Fixed coredump in squid_error_entry() on Config.errHtmlText.
	- Added redirector stats entry to cachemgr.cgi.
	- Call ipcache_purgelru() during an idle timeout.
	- Changed fqdnFromAddr() to copy inet_ntoa() result into a 
	  static buffer.
	- Fixed storeDirClean() printf format.

Changes to squid-1.1.alpha10:

	- Fixed directory increment bug in storeDirClean().
	- Misc little changes trying to track town random coredumps.
	- Includes all squid-1.0 changes up to squid-1.0.8.

Changes to squid-1.1.alpha9:

	- Fixed parsing of redirected URLs.
	- Changed URL redirection to pass in client address, ident, and method.
	- Fixed NULL pointer coredump in log_append().
	- Don't swap negative-cache objects to disk (storeCheckSwappable())
	- Only purge MemObject if entry is swapped to disk.
	- Includes all squid-1.0 changes up to squid-1.0.7
	- Fixed purify free memory errors in clientAccessCheck().

Changes to squid-1.1.alpha8:

	- Removed all references to hierarchy.log.
	- Changed hierarchy_log_append() to hierarchyNote() and added
	  _hierarchyLogData structure.
	- Fixed "tty input" bug where a reverse lookup request was
	  written to stdout.
	- Cleaned up pointers in protoUnregister().
	- Includes all squid-1.0 changes up to squid-1.0.6.
	- cache_swap 0 is allowed (proxy only server, no swapping), mainly
	  intended for fast maintenance startups where the system already
	  has to be running, but the disk(s) have not been fsck'd yet.
	- quick_abort actually works now
	- quick_abort functionality made conditional
	- ttl_pattern storage wasn't being cleaned upon a reread of
	  the config file (the patterns were added only, got duplicates)
	- ttl_force_pattern a new config option to override the settings
	  of certain pages despite (or because) of enforced low expiry times

Changes to squid-1.1.alpha7:

	- Added 'tcp_recv_bufsize' option to config.
	- Changed NEIGHBOR to SIBLING where appropriate.
	- Split UDP_HIT_OBJ into {PARENT,SIBLING}_UDP_HIT_OBJ
	- Misc casts and cleanup from running Insight.
	- Replaced all get*() functions with direct references to
	  Config structure.
	- Removed 'http_stop', 'ftp_stop', and 'gopher_stop' from config.
	- Added 'ssl_proxy' config for forwarding all SSL requests to
	  another proxy.
	- Includes all squid-1.0 changes up to squid-1.0.5.

Changes to squid-1.1.alpha6:

	- Changed storage manager to use a two level directory
	  structure.  This makes squid-1.1 incompatible with squid-1.0!
	  (Mark Treacy).
	- Added last modification time to the StoreEntry structure, and
	  the swap log.
	- Changed how memory passed to comm_write() gets freed.  Now
	  pass in a free handler function which gets called when the
	  RWStateData structure is destroyed.
	- Other misc cleanup.
	- Added a reverse-address-lookup cache (``fqdncache'').
	- Added support for threaded ACLs for destination IP addresses
	  and source hostnames.
	- Use aclMatchDomainList() instead of aclMatchWord() for domain names.
	- Renamed cachemgr 'stats/general' to 'stats/ipcache'.
	- Added 'log_fqdn' option to config file.
	- Added 'client_netmask' to config file.

Changes to squid-1.1.alpha5:

	- Got Asynchronous I/O stuff to compile and run on IRIX 5.3
	- Cleaned up diskHandleWrite()
	- Added free() handler to struct dwrite_q so diskHandleWrite()
	  can free memory after its been written.
	- Changed file_open() to not allow files to be opened O_RDWR.
	- Changed file_open() to always set O_APPEND for O_WRONLY files.
	- Includes all squid-1.0 changes up to squid-1.0.2.

Changes to squid-1.1.alpha4:

	- Fixed Asynchronous Disk I/O routines to basically work.
	- Fixed memory write bugs when using the redirector.
	- Added support for non-anonymous FTP urls without needing a
	  password in the URL.

Changes to squid-1.1.alpha4:

	- Changed cachemgr detailed filedescriptor info to be a separate item.
	- 'no-cache' reload now discards bad IP cache entries too.
	- Added 'echo request' URL hack:  http://cachehost:3128/echo
	- Added URL redirector feature.
	- Addeed 'ident_lookup' option to config file
	- Fixed http to never rely on blocking IP cache lookups.
	- Removed need for locked IP cache entries.
	- Changed free page stacks to always free pages if more than
	  'max' are allocated.

Changes to squid-1.1.alpha3:

	- Added Asynchronous Disk I/O routines from Pete Bentley.
	  (NOTE, not yet working for IRIX 5.3).
	- Made squid native access log the default format.

Changes to squid-1.1.alpha2:

	- Added support for RFC931/ident

==============================================================================

Changes to squid-1.0.18 (October 7, 1996):

	- Added INADDR_NONE to cachemgr.c for Solaris.
	- Added checks to deal with Harvest Cached neighbors which don't
	  handle Squid's ICP version 2.

Changes to squid-1.0.17 (September 24, 1996):

	- Fixed cachemgr.cgi to handle an arbitrary IP address (Ron
	  Gomes)
	- Fixed syslog() calls to use syslog(X, "%s", buf) (Yoichi
	  Shinoda).
	- Copied ipcache locking stuff from v1.1.
	- Copied httpConnect() from v1.1 for non-blocking DNS lookups.
	- Fixed "\r\n\0" bug in gopherSendRequest();

Changes to squid-1.0.16 (September 16, 1996):

	- Fixed shadow passwd support (John Saunders).
	- Added checkFailureRatio() to detect high fail:success ratios
	  and go into ICP "hit only" mode for 5 minutes when the ratio
	  exceeds 1.
	- Added ip_acl_destroy() to reset 'local_ip' and 'firewall_ip'
	  on HUP signal.

Changes to squid-1.0.15 (September 13, 1996):

	- Fixed stupid bugs from moving icpState->flags to
	  request->flags.

Changes to squid-1.0.14 (September 13, 1996):

	- Added '#if DELAY_HACK' code for Mike Groeneweg
	  <mikeg@scorpion.murdoch.edu.au>.
	- Fixed debug bug in ttlSet().
	- Moved icpState->flags to request->flags.
	- Fixed edgeWouldBePinged() to skip SIBLINGS and NO-CACHE
	  requests.
	- Fixed bad SET/TEST in httpProcessReplyHeader() (Miguel A.L.
	  Paraz).

Changes to squid-1.0.13 (September 12, 1996):

	- Fixed ftpget parsing PASV reply bug (Carson Gaspar).
	- Forced include of <netinet/in_systm.h> for NeXT (Holger
	  Hoffstaette).
	- Promulgate tcp_outgoing_addr to ftpget with -o option (Edward
	  Moy).
	- add Date: header to Squid-generated Gopher objects (Geoffrey
	  Keating).
	- cachemgr.cgi HTML fixes (Cord Beermann).
	- Collapsed some config parsing functions to parseOnOff().
	- Added config option: memory_pools on|off
	- Added config option: udp_hit_obj on|off
	- Added config option: forwarded_for on|off
	- Copied better stmem.c and stack.c routines from v1.1 code.
	- Added support for HTTP/1.1 Cache-Controls 'private' and 
	  'no-cache'.
	- Copied dnsserver "hello/alive" test from v1.1 code.

Changes to squid-1.0.12 (September 3, 1996):

	- Fixed urlCheckRequest() to allow CONNECT/SSL requests.
	- Change default socket send/receive buffers to 16k (in
	  configure) instead of 8k, mainly for Solaris.
	- Fixed urlParse() to remove trailing dots from hostnames.
	- Added 'ttl_pattern/i' config tag for case-insensitive
	  regular expressions.
	- Fixed swapin_complete_handler FMW bug in storeSwapInHandle().
	- Removed 'Invalid object detected' trap in storeValidToSend().

Changes to squid-1.0.11 (August 30, 1996):

	- Fixed ENTRY_DISPATCHED bug.  Now set ENTRY_DISPATCHED
	  only in getFromCache().
	- Added missing newlines to a number of debug messages.
	- NULL-terminate long URL's in urlParse().
	- Changed configure to remove libmalloc for FreeBSD
	- Changed ftpget to assume a single space between date and 
	  filename in Unix sytle listings.
	- Added urlCheck() to check for supported method/protocol
	  combinations and return "501 Not Implemented" when
	  appropriate.
	- Added ftpget check for negative port numbers in PASV
	  reply.
	- Added shadow password support for cachemgr shutdown.

Changes to squid-1.0.10 (August 26, 1996):

	- Fixed INADDR_NONE not being set for ftpget.c.
	- Remove "Connection: Keep-Alive" lines from HTTP requests
	  since Squid doesn't support them.
	- Fixed IP Address/netmask bug.  Now 1.2.3.4/255.255.255.0 is
	  equivalent to 1.2.3.0/255.255.255.0.

Changes to squid-1.0.9 (August 22, 1996):

	- Cleaned up ipcache_purgerlu().
	- Fixed ipcache_gethostbyname() to release expired entries.
	- Added check for numeric addresses to ipcache_nbgethostbyname().
	- Added Date: field to ftpget's HTTP header output.
	- Added temporary hack to httpProcessReplyHeaders() to allow
	  caching of non-HTTP objects fetched from neighbors when
	  the header does not have Date, Expires, or Last-Modified.
	- Added a check for a valid ICP socket before sending ICP
	  queries.
	- Fixed SSL code to unregister DNS lookups if client aborts.
	- Removed lib/host_cache.c from distribution.
	- Made IP cache stats output sorted by last reference.
	- Added ICP internet-draft to docs directory.

Changes to squid-1.0.8 (August 19, 1996):

	- Added ftpget fixes from carson@lehman.com and moy@parc.xerox.com.
	- Fixed -s option to enable syslog logging.
	- Added 'err_html_text' for configurable error messages.
	- Fixed protoDispatchDNSHandle() to not try a direct fetch if
	  host is beyond firewall_ip list.
	- Changed storeDirClean() to handle one directory per call and
	  not keep the dirhandle open between calls.
	- Changed .zip MIME type to "application/x-zip-compressed".
	- Added new 'url_regex' ACL type, regular expression match over
	  the whole URL.
	- Removed xrealloc() call from storeClientListAdd().

Changes to squid-1.0.7 (August 14, 1996):

	- Added "store_clean" routines to periodically remove orphaned
	  swap files.
	- Increased StoreEntry->method_t from 3 to 4 bits, probably fixes
	  storeGenerate*Key() coredumps.
	- Added debugging to examine_select().
	- Added peer address to debugging for Ignored ICP packets.

Changes to squid-1.0.6 (August 12, 1996):

	- Fixed coredump in icpStateFree() for bad requests.
	- Fixed configure bug in determining FD_SETSIZE.
	- Fixed garbage collection to stop if SIGTERM received.
	- Fixed pid file to be written just before 'ready to serve requests'.
	- Fixed CheckQuickAbort() lock_count bug.
	- Fixed setting the hierarchy code for access.log when the 
	  hierarchy.log is disabled.
	- Fixed urlParse() to fail for URLs longer than MAX_URL bytes.
	- Fixed icpDetectClientClose() to detect TCP half-close and
	  not abort the connection.

Changes to squid-1.0.5 (July 25, 1996):

	- Added ICP_OP_RELOADING to be used instead of ICP_OP_DENIED
	  for -Y option.
	- Moved hierarchy_code for access.log from MemObject to
	  request_t so simultaneous client readers don't get the same
	  hierachy code.

Changes to squid-1.0.4 (July 24, 1996):

	- Fixed ftpget logic/precedence bug
	- Fixed ttlSet() to choose TTL as offset from when the object
	  was originally served, not the current time.
	- Fixed configure bug with setting GETTIMEOFDAY_NO_TZP.
	- Removed unnecessary call to ipcache_gethostbyname() in
	  sslConnect().
	- Fixed stupid memset() bug in gopher.c causing
	  a huge block of stack memory to be zeroed.

Changes to squid-1.0.3 (July 18, 1996):

	- Fixed FTP to send 'Ascii' or 'Binary' based on MIME encoding,
	  not content-type.
	- Changed icpHierarchical() to allow IMS requests to neighbors
	  if they all support Squid's private keys.
	- Fixed icpUdpSend() to not ask for a HIT_OBJ reply if the
	  HTTP request included 'Pragma: no-cache'.

Changes to squid-1.0.2 (July 16, 1996):

	- Fixed HTTP code in access.log for TCP_IFMODSINCE requests.
	- Fixed SSL to not read again until previous write is complete.
	- Added CPU usage percentage in cachemgr 'info' output.
	- Fixed bug when removing a neighbor.  Forgetting to decrement
	  friends->n causes a duplicate ICP query to be sent in
	  neighborsUdpPing().
	- Increased some MAX_URL sized character buffers to prevent
	  overflows.

Changes to squid-1.0.1 (July 8, 1996):

	- Fixed ftpget server looping on socket EOF condition.
	- Fixed SA_RESETHAND undefined bug.
	- Fixed half-hour timezone offset bug.
	- Fixed parse_rfc850() to return -1 instead of 0 upon error.
	- Added patch for Motorola systems from Tony Lorimer.
	- Added support for HTTP PUT method.
	- Added check for <netinet/tcp.h> for HP-UX.
	- Added GNU General Public License.
	- Changed ttlSet() to use Date field if Last-Modified is absent.
	- Changed http.c to not save objects from neighbors which do
	  not have Date, Last-Modified, or Expires values.
	- Changed some large local character arrays to static.

Changes to squid-1.0.0 (July 1, 1996):

	- Fixed beta17 "fd_lifetime" typo bug
	- Added 'firewall_ip_list' to configuration options
	- Set resolver options to disable searching default domains
	  and parent domains.
	- Added blocking-rebuild -F option.
	- Fixed storeMaintainSwapSpace to be called every 10 seconds.
	- Fixed ICP_HIT_OBJ bug causing objects to get stuck in VM.
	- Fixed matching the ends of domain names (e.g. bar.com no 
	  longer matches foobar.com).
	- Fixed checking return code from fprintf() while writing the
	  clean swap log.
	- Fixed fatal_dump from storeSwapoutHandle running out of disk
	  space.
	- Added disabling of a neighbor cache if 95% of replies are
	  UDP_DENIED.
	- Added accounting for misc memory/data structures
	- Added 'no-query' option for 'cache_host' config line
	- Added error reporting to SSL requests.
	- Fixed SSL bug, client abort was not closing the server
	  side connection.
	- Fixed checking hierarchy_stoplist bug.
	- Fixed ipcache error messages by giving each entry its
	  own string.
	- Use sigaction() instead of signal() if available.
	- Fixed ipcache bug causing some lookups to get stuck in
	  PENDING state if all dnsservers are busy.
	- Fixed domain name matching bug when using '.com' instead of
	  'com'.
	- Fixed close_handler coredump bug in comm.c.
	- Removed unnecessary DNS lookup of hostnames in WAIS URLs.

Changes to squid-1.0.beta17 (June 12, 1996):

	- Fixed another ipcache coredump problem where an entry could
	  be released between writing to and reading from dnsserver.
	- Fixed store.c bug of purging aborted objects.
	- Cleaned up checkLifetimes() function to make it simpler.
	- Added visible_hostname support to ftpget.
	- Fixed null edge dereferencing bug for UDP_HIT_OBJ.

Changes to squid-1.0.beta16 (June 10, 1996):

	- Fixed two coredump-causing bugs in ipcache_unregister().
	- Changed 'close_handler' to a linked list.
	- Changed freeing of protodispatch_data structures to use
	  new close_handler (attached to client FD).
	- Fixed URL handling to accomodate browswers which do not handle
	  relative URL parsing.

Changes to squid-1.0.beta15 (June 9, 1996):

	- Fixed storeSwapoutHandle coredump bug
	- Fixed DNS lookup failure of neighbor hosts after a few hours
	  of operation
	- Changed memcpy() to memmove() for overlapping memory copies
	- Changed store rebuidling to unlink the log-last-clean file
	  in case of a crash during rebuild
	- Added forwarding loop detection
	- Changed all memcpy to use xmemcpy which is memmove, bcopy, or
	  memcpy.
	- Fixed coredump bug from partial dnsserver reads, manifest on
	  FreeBSD and NetBSD.

Changes to squid-1.0.beta14 (June 7, 1996):

	- Fixed coredump bug in icp.c when generating ``Not Modified''
	  replies.
	- Fixed SSL bug which assumed the requested host name would
	  already be in the IP cache.
	- Fixed names of generated HTTP reply headers.

Changes to squid-1.0.beta13 (June 7, 1996):

	- Fixed coredump bug where StoreEntry key was free'd too soon.
	- Fixed UDP_HIT_OBJ bug: cancel the hierarchy timeout and set
	  the ping_status to DONE for UDP_HIT_OBJ replies.

Changes to squid-1.0.beta12 (June 6, 1996):

	- Fixed problem when using udp_outgoing_addr where no ICP
	  packets would be recieved because they were getting sent
	  to the "outgoing" instead of the "incoming" socket.
	- Fixed objects hanging around in cache after a keychange.
	- Added ability to restrict neighbor caches with ACLs.
	  ('cache_host_acl').
	- Fixed ssl FD mismatch bug.
	- Fixed INADDR_NONE bug on 64bit systems.
	- Fixed store rebuilding bug; temporary log file was not being
	  truncated.
	- Made all external processes communicate with TCP sockets
	  (no more Unix domain sockets).
	- Semi-major rewrite of ipcache implementation.
	- Fixed a couple memory bugs found by purify.
	- Fixed sending large (>8192 bytes) HTTP requests.
	- Added "lazy" server IP address ACL checks (type 'dst').
	- Changed handling of IMS requests.  Now will return "304
	  Not Modified" if the requested object is in the cache
	  and not expired.

Changes to squid-1.0.beta11 (June 1, 1996):

	- Fixed serious memory leak of MemObject->reply structures.


Changes to squid-1.0.beta10 (May 31, 1996):

	- Fixed bug when request arrives in fragmented IP packets.
	- Fixed ACL bug which denied cache manager access while in
 	  httpd_accel mode.
	- Changed ftpget to "fail nicely" for sites which do not allow
	  PORT requests (if compiled with PASVONLY).
	- Fixed Unix domain socket off-by-one bug in ftpget.
	- Fixed lingering sockets after shutdown by SIGTERM.
	- Added dnsserver use histogram to ipcache stats.
	- Changed domain ACL's to match only the end of the hostname, not
	  just anywhere in the string.
	- Fixed setuid bugs when pid_filename was not defined
	- Fixed zero-sized object getting stuck in VM.
	- Configure checks for working UNIX domain stream sockets
	- Rotate cache.log before the others
	- SIGUSR2 now toggles between full and normal debugging
	- Close and restart ftpget server during logfile rotation
	- Added memory pools for request_t and MemObject data structures.
	- Added new address binding options for more control

Changes to squid-1.0.beta9 (May 23, 1996):

	- Fixed storeToString() coredump bug on 'swap_buf'
	- Added back the CIDR notation functionality to decoding IP
	  address ACLs.
	- Fixed ftpget listing parsing coredump bug.
	- Fixed neighborsUdpAck() coredump for late-arriving ICP replies.

Changes to squid-1.0.beta8 (May 22, 1996):

	- More friendly CFLAGS and LDFLAGS for configure
	- ACL_ALLWEEK bugfix
	- Added missing increment of UDP connection counter.
	- Changed ftpget select to check for EWOULDBLOCK/EAGAIN
	  (workaround for broken Solaris select(2)).
	- Fixed MALLINFO calls for Linux
	- Fixed strerror() problems on SunOS 4.1.x
	- Fixed DefaultAnnounceRate; set to zero by defult.
	- Changed all port variables to u_short.
	- Created AF_UNIX versions of comm_open(), comm_connect().
	- Changed ftpget server to use UNIX domain socket.
	- Removed RESET_SIGNAL_HANDLER check--always reset the signal
	  handler.
	- Added instrumentation of basic IPCache stats.
	- Fixed calculation of neighbor average RTT.
	- Added 'outbound_addr_list' to config
	- Change getFirstParent() to getFirstUpParent().
	- Changed ftpget to use an additional pipe() for crash detection
	- Added ICP_OP_DENIED message type
	- Added patches for Nextstep port from Luke Howard
	  <lukeh@vurt.schnet.edu.au>
	- Added a lifetime to HTTP server connections being deferred.
	- Added IP address ranges in 'src' ACLs
	- Added FQDN's in 'src' ACLs
	- Fixed request structure free-memory-read/coredump bug.
	- Changed icp.c to select on client socket to detect aborts.
	- Better compliance with HTTP/1.1 *DRAFT* regarding which reply
	  codes can be cached.
	- Added 'hierarchy_stoplist' configuration option.
	- Changed mallopt option M_MXFAST to 512 bytes.
	- Added -Y option to only return UDP_HIT or UDP_DENIED during
	  store reload.
	- Added UDP_HIT_OBJ type.  Just like a UDP_HIT, but object data
	  is returned in the UDP packet if it will fit; saves a TCP
	  connection.  Not compiled in by default, add -DUDP_HIT_WITH_OBJ
	  to src/Makefile DEFINES.

Changes to squid-1.0.beta7:

	- Fixed comm_udp_sendto continuous loop bug
	- Fixed URLs-with-colon-but-no-port-number bug
	- Fixed sending ICP queries for HEAD requests
	- Changed 'server_list' output.  Added RTT, Fetches, Hits, Misses,
	  and percents.
	- Fixed setuid bug causing some logs to be owned by root.
	- Fixed virtual host mode (-V option)
	- Added read(2) instrumentation for HTTP and FTP.
	- Changed neighbor initialization to continue if DNS lookup fails.
	- Lint cleanup

Changes to squid-1.0.beta6:

	- Fixed null error message coredump in ftpget.
	- Added -m Method option to `client'.
	- Fixed ftpget server bug with missing trailing slash.
	- Removed 'connect_ports' from config, use general ACLs instead.
	- Changed requested listen queue length to 1/4 of getMaxFD().
	- Rewrote SSL/CONNECT handlers.  Now doesn't use a StoreEntry.
	- Fixed some aborted objects getting stuck in VM bug.
	- Fixed ftpget PASV reply sscanf to work for VMS ftpd.
	- Changed FTP URL parsing to use urlParse().
	- Changed ftpget to skip RETR command if URLs ends with '/'.
	- Changed ftpget to display README at the bottom if there are other
	  server messages.
	- Changed ftpget to not reopen a new data connection
  	  if one is already open.
	- Fixed handling of FTP URLs with spaces (and other unsafe characters)
	- Changed ftpget to only generate BASE HREF if the FTP URL does
	  not end with '/'.

Changes to squid-1.0.beta5:

	- Fixed cachemgr to send 'HTTP/1.0' on request so it works
	  with beta4 fixes to icp.c.

Changes to squid-1.0.beta4:

	- Added a handler to restart the ftpget server.
	- Fixed access checks for ICP by parsing the requested URL.
	- Added "magic marker" to ftpget-generated errors so they can
	  be negative-cached.
	- Added a small run-time check to configure to see if signal
	  handlers should be restarted after invocation (ala SYSV).
	- Determine Maximum filedescriptors in configure and change
	  FD_SETSIZE if needed.
	- Changed read stall algorithm for HTTP.  No don't wait until
	  the object is in DELETE_BEHIND mode to stall the server read
	  and wait for the client to catch up.  Also changed from 4k to
	  16k read buffer.
	- Fixed HTTP request parsing to check for blank line at the
	  end of all requests.  Symptoms were "connection reset"
	  messages.

Changes to squid-1.0.beta3:

	- Added ftpget '-C minport:maxport' option
	- Fixed PROTO_MAX fencepost bug in stat_init().
	- Fixed Fixed CheckQuickAbort() coredump.
	- Fixed disabling store.log and hierarchy.log when set to "none"
	- Fixed numerous problems related to setuid().
	- Fixed 'check_cache.pl' to use new swaplog format (without "FILE").
	- Fixed ACL coredumps when checking NULL words.
	- Changed pid_filename to be written and unlinked as root.
	- Added "-i seconds" option to 'client' for testing IMS GET.
	- Fixed a bug where an IMS request caused the valid object to
	  get ejected from the cache.
	- Fixed continual DEAD_PARENT/REVIVE bug
	- Fixed ERR_INVALID_URL bug for URLs with a password field.
	- Added to Release-Notes info about converting 'cache/log' and
	  difference between stoplists and ttl_pattern.

Changes to squid-1.0.beta2:

	- Fixed /bin/csh "$#argv" leftover in RunCache.
	- Fixed ACL day-of-week bitmask bug.
	- Fixed missing checks for WAIS in some places.
	- Fixed chdir(swappath(0)) bug; do chdir() after storeInit().
	- Changed enumerated structure members to be defined outside
	  of the structure itself (for AIX).
	- Changed ftpget to fork before reading the request and make
	  sure the entire request is read.

Changes to squid-1.0.beta1 (Apr 19, 1996) from Harvest cached-1.4.pl3:

	- Added a "server mode" to ftpget.  Now the (much smaller)
	  ftpget process forks for each FTP request.
	- Added support for If-Modified-Since GET requests.
	- Added support for SSL and https objects.
	- Added background processing for rebuilding the disk store
	  while serving requests.  Cache can now serve requests immediately.
	- Added a 'reconfigure' feature activated by SIGHUP.  The config
	  file is re-read and most changes will take effect.
	- Added an internal flag for using private keys with ICP queries
	  to neighbors.  If any neighbor returns a reqnum field of zero,
	  then disable using private keys.  But still use private
	  keys for things with bypass the ICP query step (such as POST
	  and IMS-GET).
	- Added a function to verify content-lengths.  Objects with
	  mismatched (but non-zero) content lenghts will be ejected.
	- Added clean shutdown mode.  On SIGTERM the incoming HTTP socket
	  is closed.  Active clients are given a lifetime of 30 seconds
	  (configurable).  Process exits when all sockets are closed.
	- Added support for large POST objects.
	- Added "store.log" which logs RELEASE/SWAPIN/SWAPOUT events.
	- Added announce feature to squid; no longer external program.
	  If enabled, a running cache will announce itself every 24 hrs.
	- Added support for FTP URLs with non-default ports.
	- Added new Access Control List scheme.
	- Added Forwarded: header to proxy HTTP requests (HTTP/1.1 feature).
	- Added weights neighbors.
	- Added urlParse() which strips off default ports and 
	  makes hostnames all lowercase.
	- Added (section,level) debugging and 'debug_options' config line.
	- Added 'pid_filename' to configuration file.
	- Added 'visible_hostname' to configuration file.
	- added 'ftp_user' to configuration file.
	- added 'dns_positive_ttl' to configuration file.
	- added 'dns_negative_ttl' to configuration file.
	- Added 'shutdown_lifetime' to configuration file.
	- Fixed bug where cache process would "spin" on large objects
	  being deferred.
	- Fixed byte order conversion bug on setting echo port.
	- Changed meaning of command line -b (buffered logs) option.
	  Now the default behaviour is unbuffered logs, use -b to make
	  them buffered.
	- Changed WAIS code to always be fully compiled in.
	- Changed the storage manager to use the notion of private and
	  public keys.  Requests are now private until the reply headers
	  have been read.
	- Changed access logging significantly.  Entries to "access.log"
	  are written when the client connection closes.  Every connection
	  is logged exactly once, always with a valid size.
	- Changed access log format (non-common) to include request
	  method and sub-second timestamps.
	- Changed handing of ECONNRESET (connection reset) errors.
	  Now treated like any other read error.
	- Changed 'rotate logs' to be activated by SIGUSR1.
	- Changed configure script to look specifically for tm_gmtoff
	  and set HAVE_TM_GMTOFF.
	- Changed configure script to look specifically extended mallinfo
	  structure and set HAVE_EXT_MALLINFO
	- Changed ICP reply code to use negative TTL value as UDP_HIT
	  threshold so we never return a HIT on neg-cached objects.
	- Changed ftpget to use select(2) on I/O for timeouts.  ftpget
	  now exits immediately if stdin goes away.
	- Changed handling of '-z' option.  Now only execute 'rm -rf ...' if
	  -U option also given.
	- Removed the command line -d (debug) option.  Use 'debug_options'
	  in config file.
	- Removed all code and references to binary port.
	- Removed dual logging to stderr/cache.log.
	- Removed old IP access controls ('proxy_allow', etc.)