CVS-Version: $Id: ChangeLog,v 1.18 2004/04/09 22:08:19 weigon Exp $

** NOTE **

This file is abondend in favour of the NEWS file

** NOTE **


15.06.2005 20:10 - 1.3.15
- mod_cml, mod_trigger_b4_dl

  added both plugins

  check http://trac.lighttpd.net/trac/log/branches/lighttpd-1.3.x/ for the
  rest

15.06.2005 13:59 - 1.3.14
- documentation

  more fix-ups for mod_fastcgi, configuration and mysql-vhost

- tests

  unified test-scripts to use the same framework

14.06.2005 23:38 
- documentation

  updated docs for mod_proxy and mod_scgi

12.06.2005 12:55 - pre-release
- mod_fastcgi
  
  fixed event handling after delayed connect

  make retry timeout configurable

  removed unused events if we switch to FCGI_STATE_READ

  disabled adaptive spawning

- mod_proxy

  added hash-based and round-robin balancing

  use port 80 is default

  fixed errorhandling on connection refused

  fixed usage of dead hosts [285]

- mod_cgi

  send 500 if the CGI died before we received any data

  redirect the stderr of CGI to our errorlog

  cleanup cgi-env after we finished our request

- uri-handling

  don't replace + to space before the ?query part

  accept characters > 127 again

- mod_auth

  fixed segfault if debugging is enabled [371]

- mod_scgi

  added SCGI support for python + WSGI [381], [382]

- mod_setenv

  fixed conditionals for setenv.add-environment [109]

- generic

  report an error on duplicate config-keys in configfile [267]

  call initgroups to join the groups of the users [239]

  fixed automatic redirects if SSL is used

  fixed compilation on Solaris [283]
  
  disable accept-filtering on FreeBSD if ssl is used [320]

  fixed handling of range-request larger than 2Gb
  
  fixed comparisions of mime-types to case-insensitive [266]

  added quotation of ETags [376], [378]

06.03.2005 12:22 - 1.3.13
- mod_accesslog

  fixed NULL dereference on logfile cycling if accesslog is not set

05.03.2005 17:30
- mod_proxy

  handle delayed connect in the same way as mod_fastcgi

03.03.2005 19:00
- freebsd

  handle remote-close gracefully

- ssl

  handle remote-close gracefully

- dir-listing

  added dir-listing.hide-dotfiles and added an option to set css files

02.03.2005 19:41
- fastcgi

  fixed path-info for prefix-patterns
  
  fixed path-info for PHP

02.03.2005 14:47 - 1.3.12
- mod_fastcgi

  fixed handling of dead fastcgi process which sent their SIGCLD to
  initd and not to lighttpd. Moving the daemonize before starting
  the fastcgi procs fixes this.

01.03.2005 23:59 
- irix 

  fixed minor compile issues with MIPSpro

01.03.2005 11:57
- request-handling

  handle most duplicate headers as 400, Bug #25

- mod_fastcgi
 
  added more checks

28.02.2005 18:26
- mod_expire

  don't ignore 'modification' any more, Bug #39
  only handles static files

- last-modified

  really compare timestamps, Bug #34

28.02.2005 11:54
- buffer 

  rewrote int2buffer functions

  simplified path_simplify

- pid-file

  ignore EACCESS on unlink

28.02.2005 10:35
- mod_fastcgi

  accept \n\n, Bug #32

- cygwin

  moved functions used by plugin and main-program to *-glue.c 
  
- lemon

  removed warnings about shadowed variables

28.02.2005 01:00
- ssl

  added ssl.ca-file, Bug #19

  improved error-messages

27.02.2005 23:48
- test cases

  rewrote to test-framework to use Perl + Test::More
  ported more test-cases 

22.02.2005 01:20
- mod_fastcgi

  replaced inet_addr by inet_aton

- request-handling

  fixed segfault if host is empty

20.02.2005 20:05
- cgi

  fixed cgi.assign for empty handlers again

20.02.2005 16:54 - 1.3.11
- request handling

  ignore \r\n before request-line in keep-alive requests (Bug #13)

- cgi, fastcgi

  added REMOTE_PORT and SERVER_ADDR

  fixed check for broken status-code in nph-scripts (Bug #14)

- fastcgi

  fixed passing cmdline options the spawned binary (Bug #16)

  fixed failed reconnects (Bug #9)

- macos x

  fixed build on max

- mod_secdownload

  parse conditional secure-download.secret (Bug #8)

- mod_userdir

  redirect if username is not followed by / (Bug #15)

13.02.2005 17:33
- mod_auth

  fix crash if require, realm or method are empty (Bug #5)

13.02.2005 14:52
- network

  handle EPIPE and ECONNRESET as 'client has closed connection' in writev()
  (Bug #1)

- macosx

  compile error on MacOS X due to missing environ (patch by Johan Sörensen)
  (Bug #2)

- indexfiles 

  append the detected indexfile only once to uri.path (reported by Thomas
  Seifert)
  (Bug #3)
   
06.02.2005 15:16 - 1.3.10
- fastcgi

  display a error-message if a hostname if specified in fastcgi.server->host
  we need an IP here
  
- debug

  added debug.log-state-handling
  
- spawn-fcgi

  accept a full commandline for spawning

06.02.2005 12:50
- fastcgi

  fixed openssl handling
  
- network_freebsd_sendfilev

  gracefull handling of connections closed on client-side
  removed debug-message

06.02.2005 01:44 - 1.3.9
- documentation

  added docs for SSL setup and mod_status

- fastcgi

  fixed config handling on PowerPC for local-spawning

05.02.2005 15:14
- fastcgi

  added bin-environment to setup the environment of the spawned process
  
  added bin-copy-environment to copy only the specified set of options
  from the old environment
  
  added handling of cmd-line options to bin-path

- setenv 

  fixed crashed in setenv.add-response-header

04.02.2005 18:09
- configure

  fixed docs for --with-mysql
  
- fastcgi

  improved performance of building the header (drop strlen())

04.02.2005 01:59 
- cgi

  don't send file on error
  
  check if cgi-handler exists before executing it
  
  added support for nph-...

02.02.2005 21:18 - pre-release
- request parsing

  handle invalid characters in URI

02.02.2005 15:12
- makefiles

  dropped unused header files from the distribution

02.02.2005 14:18
- fastcgi

  delete sockets on shutdown
  
- http/1.1
  
  adding option to disable http/1.1

01.02.2005 12:03
- cygwin

  fixed plugins_load to use the right extensions again
  removed mmap check
  added ssl support

01.02.2005 01:49
- configure

  make check for valgrind.h covered by --with-valgrind
  
- mod_localizer, mod_maps

  remove both plugins from the distribution
  
- file-not-found

  handle file not found again
  
30.01.2005 16:44
- HEAD requests

  don't send content on dynamic HEAD requests with status 200

30.01.2005 15:16 - 1.3.8
- network-handler
  
  remove debug output on writev() if the remote side closed the connection
  
- directory index

  handle EACCES correctly

29.01.2005 15:16 - pre-release
- mod_alias

  fixed mod_alias + pathinfo handling
  
- mod_accesslog

  added access-log to syslog patch from allan

28.01.2005 17:30
- directory redirect without Host-header

  use server-ip instead of client-ip for the Location: 

- fastcgi + pathinfo

  if fastcgi-auth redirects to a directory which doesn't exist handle it
  correctly (bug introduced in 1.3.8)
  
- requesting directories

  clean physical.path if directory is requested and dir-listing is disabled
  send 403 again (buf introduced in 1.3.8)

28.01.2005 12:08
- fastcgi

   ignore FDEVENT_HUP for unix-sockets as a simple read + timeout will do
   the job anyway

22.01.2005 20:28 - pre-release
- fastcgi

  send content and headers if authorizer mode is used
  
  use a new connection if connection is died to fastcgi
  and we have not used it yet

18.01.2005 21:21 - pre-release
- plugins

  added version-id to plugins to detect plugins which are not up-to-date

16.01.2005 23:11
- fastcgi

  fixed write-failed after crash of fastcgi-child

16.01.2005 20:43 
- setenv

  fixed setenv.add-environment

- fastcgi

  fixed authorizer + added testcases

16.01.2005 17:40 - pre-release
- mod_status

  beautified mod_status

- mod_setenv

  added setenv.add-environment

- timeouts

  add timeout to read-post

15.01.2005 12:57
- debug

  added debug options to log
  - missing files
  - request header
  - response header
  - request handling

  added a more usefull error message for the status-code changes in the
  request parser

- server announcement

  set Server: header for dynamic content too

- fastcgi

  fixed double free

  don't crash on FDEVENT_ERR

  added a comment for EAGAIN on connect()

08.01.2005 17:45
- ssl

  report an error if ssl.engine is enable but no ssl support compiled in

08.01.2005 12:23
- mod_status 

  added request time to the output
  
  (late changelog) added host and filename to the output (fobax)
  (late changelog) HTMLalized the output (fobax)

06.01.2005 19:51 - pre-release
- error-handler

  let the error-handler handle 403 requests too

  make the error-handler setable by a module

- error-pages

  reworked the error-page handling

05.01.2005 13:10 
- keep-alive handling

  made sure that keep-alive is really handled correctly

04.01.2005 17:02
- mod_setenv

  added a module to added request and response headers on the fly
  
- error-log

  send error log to syslog() if no errorlogfile is specified (again)

02.01.2005 22:44 - pre-release
- response handling

  cut of body for status 301, 304 and 205

- buffer 

  optimized all _hex functions (Silvan Minghetti)

02.01.2005 20:32
- fastcgi

  if bin-path is not specified, don't die (bug introduced in the last pre-rel)
  
- auth

  if userfile is empty don't auth.

02.01.2005 19:06
- mod_compress

  fixed off by one if cache-dir is not set

02.01.2005 16:10
- conditional config

  fixed !~ and != 
  
- buffer 

  copy empty buffers correctly

31.12.2004 17:45
- ipv6 + pidfile
 
  don't complain if we can't remove the pidfile (Silvan Minghetti)
  
  remove ipv6 option from the commandline of lighttpd doesn't support 
  ipv6 (Silvan Minghetti)

31.12.2004 15:41 - pre-release
- kqueue

  simplified event handling (adam)

- fastcgi

  fixed div-by-zero bugs in the adaptive process spawning

- mysql-vhost

  added mysql-vhost (Christer Holgersson)

30.12.2004 19:09
- fastcgi

  added adaptive spawning of FastCGI processes

- traffic shaping

  added traffic shaping per virtual server

28.12.2004 23:26
- traffic shaping
  
  added traffic shaping per connection

25.12.2004 22:58
- mod_status

  fixed status.url again (Timo)

21.12.2004 11:29
- configure

  added check for signal and select (compile fix for netbsd 1.4 and 1.5)

11.12.2004 12:38 - 1.3.7
- fastcgi + php 

  retry to connect to another PHP child if one of them dies after 
  connect
  
- cgi + multipart

  don't transform CONTENT_TYPE to HTTP_CONTENT_TYPE
  
- debian

  more cleanup, updated changelog, added more deps and suggests
  (Chris Brown)

10.12.2004 22:33
- event handler
  
  fixed crashes in kqueue 

10.12.2004 13:57 - pre-release
- mod_status 

  fixed wraparound in total requests and total traffic
  
- debian

  updated licence and packaging
  
- security

  call setgroups() to get rid of all groups
  
- ssl

  handle SSL_shutdown() == 0 correctly
  
  fixed openssl detection in configure
  
  fixed handling of chunked encoding 
  
- request handling
  
  handle Connection: keep-alive correctly (case as not ignored)

21.11.2004 02:39
- windows

  merged basic native windows port (compiles with mingw)

20.11.2004 18:43
- conditional

  ported 
  - cgi
  - secdownload
  - expire
  - localizer
  - usertrack 
  - status
  - proxy
  
- server-tag

  Server: ... can now be specified by server.tag = "..."
  
- spawn-fcgi

  fixed typo in usage text
  
- ssl

  fixed detection of libs and headers

05.11.2004 16:01
- fastcgi

  added more usefull error messages

04.11.2004 23:01
- ssi

  added support for ${...} 

03.11.2004 14:51 - 1.3.6
- fastcgi

  added spawn-fcgi to the distribution
  added spawn-local-fastcgi yourself ( bin-path )

03.11.2004 11:22
- accesslog

  don't cycle accesslogs of external processes are used

02.11.2004 15:34
- fastcgi
  
  handle END-OF-REQUEST correctly if chunk-encoding is not used

02.11.2004 10:53
- internal redirects

  fixed handling of query strings in internal redirects for directories

02.11.2004 09:54 - pre-release
- cgi

  add REMOTE_USER, suppress AUTHORIZATION
  handle payloads > 4k
  
- mod_alias

  fixed url checking
  
- follow-symlink

  fixed config

31.10.2004 11:30 - 1.3.5
- writev

  fixed seg-fault in debug-message if write() fails and LFS is enabled
  handle EINTR

- sendfile linux

  handle EINTR

31.10.2004 09:09
- freebsd

  added missing header in joblist.c
  fixed test-scripts for zsh

30.10.2004 22:26
- modules

  added mod_userdir and mod_alias
  added docs for the new modules

30.10.2004 19:52
- porting

  added defines for MAP_FAILED for NetBSD 1.3.x

30.10.2004 18:54 - pre-release
- pipelining

  fixed offset calculations

- ipv6
  
  IPv6 might be disabled at compile-time

- rewrite

  close mem-leak

- auth

  forgot to reset the global-config handler
  
- symlink

  add option to disable follow-symlink

- ssi

  added support for exec-cmd

23.10.2004 - 1.3.4
- max-fds

  set the upper limit of fds only if server.max-fds is set

23.10.2004 13:49
- accesslog

  use a shell to handle accesslog-pipes

22.10.2004 17:00
- accesslog

  added logging of user-supplied data via %{...}o and 
  X-LIGHTTPD-* header

22.10.2004 14:57 - pre-release
- openwrt

  fixed configure-checks and Makefile.am's to build cleanly with a
  cross-compiler
  
  builds cleanly for openwrt

22.10.2004 13:03 
- out-of-fd

  improved the out-of-fd handler
  
- cgi, fastcgi

  set SERVER_NAME to server.name or the value submitted by Host: 
  
- error-handler

  only set old status code if it wasn't set by a handler

21.10.2004 22:36 - pre-release
- fastcgi

  don't crash on out-of-fd condition
  
- out-of-fd

  try handle the out-of-fd condition in a sane way

21.10.2004 15:03
- mod_auth

  seperated auth.backend.*.userfile for plain, htpasswd and htdigest
  
  added 'digest-auth' against 'plain-backend'
  
  added auth.debug for debugging

16.10.2004 10:18 - 1.3.3
- mod_simple_vhost, mod_evhost

  conditional-ized 

- mod_rrdtool

  maintain the request-counter for each conditional-config (adam)

14.10.2004 11:30
- accesslogs

  cycle all access-logs
  
- mod_rewrite

  tell the user to install pcre.h if he wants to use mod_rewrite

10.10.2004 10:11 - pre-release
- error-handler

  added a error-handler for status 404 (server.error-handler-404)

09.10.2004 16:28 - pre-release
- cgi

  added support for \n in headers 
  
- mod_auth

  added conditional auth

01.10.2004 09:28
- plugins

  fixed off by one error in plugin initialization (Mike)
  related into a segfault on AMD64

30.09.2004 21:44 - 1.3.2
- file-cache

  disabled the file-cache it was taken the wrong files from the cache

30.09.2004 08:39 - 1.3.1
- file-cache

  drop a unused file-cache entry after 10 seconds
  reuse unused entries
  
- request-parser

  accept IPv6 adresses in Host header
  
- tests

  modified the scripts to work with zsh (check on Linux, Irix and FreeBSD)

26.09.2004 12:28
- comparission function

  file-cache has delivering the wrong entry if only the last character of
  the filename differed and the filesize was the same.

- cgi + cygwin

  cgi need s SYSTEMROOT environment
  
  
22.09.2004 08:55
- network

  detect of file has been shrinked while we are sending it out and terminate
  the connection if would run over the edge

22.09.2004 07:56
- mod rewrite, fastcgi, ...

  keep REQUEST_URI after rewrite

21.09.2004 22:49
- fastcgi authorizer

  fixed cleanup code (matt)

21.09.2004 20:08 
- rrdtool 

  rrdtool.db-name is now conditional
  
  fixed check if write() failed (adam)

17.09.2004 17:50 - 1.3.0
- rewrite

  added url.rewrite-final = ...

17.09.2004 15:55
- code cleanup 

  integrated the fixes from cygwin into the main tree
  
- kqueue

  init kqueue after daemonizing (broken since 12.09.2004 14:02)

16.09.2004 21:00
- cygwin + macosx

  finished the cygwin port
  this port seems to fix the problems on macosx too

12.09.2004 14:02
- socket handling

  added support to handle more than one server socket

11.09.2004 12:23 - 1.2.8
- EINTR

  handle EINTR for linux-sendfile

- configfile

  ignore an extra comma at the end of the array declaration

11.09.2004 09:46
- mod_proxy

  pass remote-addr as X-Forwarded-For to the real server behind the proxy
  
- code cleanup

  moved all cut'n'paste versions of the inet_ntop cache to inet_ntop_cache.c
  
- fcgi

  don't overwrite the fd in fcgi_establish connection if connect fails. this
  results in various problem in other places.

05.09.2004 09:46
- file-cache

  cache the mimetype

- last-modified

  don't complain if the If-Modified-Since contains a valid comment/option 
  like <timestamp>; length = ...

05.09.2004 09:13
- expires

  overwrite the Expire if it is set by a previous plugin
  
- conditional config

  conditional config as disabled in 1.2.7 by accident

04.09.2004 10:02 - 1.2.7
- mod-proxy

  remove the \0 before the post content

- cgi

  fixed hanging process if cgi-crash terminates to fast (before we read its
  response)
  
- extented attributes

  added xattr support, submitted by Ari

29.08.2004 16:00
- rrdtool 

  moved the rrdtool support from mod_status into its own module mod_rrdtool
  
  rrdtool.binary = "/usr/bin/rrdtool"
  rrdtool.db-name = "/var/www/lighttpd.rrd"
 
29.08.2004 11:00 - pre-release
- timeouts

  server.max-keep-alive-requests = 0 replaces 
    server.use-keep-alive = "disable" 
    
  added 
    server.max-keep-alive-idle
    server.max-read-idle
    server.max-write-idle 
    
- docs

  added a entry for each config-value into configuration.txt
  added simple docs for 
    rewrite
    redirect
    compress
    cgi
    simple-vhost

29.08.2004 10:05
- config options

  complain if no configfile is specified
  
- fastcgi

  removed stupid allocation bug which might cause a problem in really rare
  cases

26.08.2004 22:06 - 1.2.6
- optimize 

  use array_strcasecmp() in favour of strcasecmp() as it is slightly 
  faster.
  
  apply the case-insentive conversion also on the last character. (adam)
  
  sort the checked elements in request.c and filter apply the logic to
  compare some less fields, if the header is not used.
  
  improved the config-patch function to use our internal buffer-compare
  functions instead of strcmp

22.08.2004 16:09 - pre-release
- cgi

  added missing cleanup code
  
- fastcgi

  remove double-free
  added handling of EINTR in some places

- leaks

  fixed some leaks in the new config code
  
- array_strcasecmp

  fixed alignment in the improved array_strcasecmp function (adam)

20.08.2004 14:46 - pre-release
- performance

  optimized a few useless strlen() away as we either know the length from
  buffer->used - 1 or by sizeof(str) - 1 if it is constant.
  
  optimized the 'find the \r\n\r\n' function.
  
  improved the array_strcasecmp() based on another idea from (ralf)

- accesslog

  enabled the strftime cache again

15.08.2004 23:41
- accesslog 

  added apache-like CustomLog handling in accesslog.format
  
  accesslog.format = "..."

15.08.2004 21:08
- test-cases

  remove testdir 

- configfiles

  handle escaping of " in strings properly 

13.08.2004 12:07
- array

  improved inner-loop of array_strcasecmp() (ralf)

11.08.2004 14:14
- fcgi socket 

  use SUN_LEN if available
  
- keep-alive

  disable keep-alive on request
  
  server.use-keep-alive = "disable"

10.08.2004 15:59 - 1.2.5
- conditional config

  mod_fastcgi
  mod_rewrite
  mod_redirect
  mod_access
  mod_compress
  mod_accesslog
  
  are ported

10.08.2004 13:05 
- pipelining

  fixed very stupid pipelining bug

09.08.2004 22:07 - pre-release
- conditional config

  first code for conditional config 

09.08.2004 14:21
- fcgi

  fixed access to free()'d memory (doesn't create any harm)
  
- isdigit, warings

  signed -> unsigned for 2 more isdigit() calls (adam)
  removed some unused var's if pcre is not available (adam)

08.08.2004 20:57 - pre-release
- debian

  added a chmod to /var/log/lighttpd/ (allan)

08.08.2004 12:05
- kqueue
 
  use EV_SET() instead of setting the ev-struct by hand (adam)
  
- fcgi 

  fixed the EINPROGRESS handling to use getsockopt (er)
  fixed a leak of server is disabled (er)
  
- solaris 10 port-api

  added a skeleton for the sol10 port api 

06.08.2004 10:18
- mod_ssi

  fix DATE_LOCAL so it displays the correct time zone (Jeremy Hinegardner)

04.08.2004 11:43
- openbsd fixes

  dropped usage of MAX() in buffer.c
  added prober includes for md5.h if openssl is enabled (brad)
  
- memory usage

  documented the way how lighttpd caches memory blocks
  reset the buffers after they have been written by the network-layer
  
- kqueue

  modify fd-bitmask only if kevent succeeded (adam)


03.08.2004 15:09
- mod_compress

  compress even if you have no cachedir set

03.08.2004 13:26 - pre-release
- Makefile

  fixed dependencies for parallel build in mod_ssi_expr.c
  
- combo patch

  * Tinker with kqueue().  Add a reset method so that the kqueue file
    descriptor can be re-enabled after a fork().  Emulate the devpoll driver
    in that adds and deletes are sent to the notification mechanism im-
    mediately, which should cut down on phantom events.  Use
    ev->kq_results as a sliding window.
  
  * Change F_SETFD calls to use the preferred FD_CLOEXEC instead of 1.
  
  * Remove unnecessary fdevent fcntl handlers.  It appears that the only
    driver that needs one is Linux RT signals.
    
  * Quiet compiler warning about unused parameter.
    
  * Set the close-on-exec flag for the /dev/poll and epoll_create() file
    descriptors.
      
  * Return failure if /dev/poll could not be opened instead of logging
    and continuing.
	
  * Detect EAGAIN after writev() failures.  FreeBSD sendfile() doesn't need
    protection, as the man page says:
	  
     When using a socket marked for non-blocking I/O, sendfile() may send
     fewer bytes than requested.  In this case, the number of bytes success-
     fully written is returned in *sbytes (if specified), and the error
     EAGAIN is returned.
     
  (adam, georg, matt)


02.08.2004 18:08
- mod_ssi

  check for pcre before compiling the module
  
- fdevents

  dropped fdevent_fcntl added by the last patch (adam)
  kqueue: events == FDEVENT_IN -> events & FDEVENT_IN (adam)

31.07.2004 22:07 - 1.2.4
- fdevents

  * Test at configure time for kqueue() and <sys/event.h>
  * Remove various hard-coded constants from event handlers
  * Move maxfds into the event structure, and out of the
    fdevent_*_init handlers.  Event handlers can use the maxfds
    member to size arrays.
  * Various event structure renames to discourage clashes
  * Remove extra (ignored) call to fdevent_event_next_fdndx() in
    the main server loop.
  * Wrestle with kqueue().  The implementation has to deal with
    phantom events (for fds which have been deleted/closed), similar
    to the Linux RT signals code.  Like the RT code, it maintains a
    bitmask of active fds.  After a successful call to kevent(), the
    code will compress/overwrite dead events.  The other annoyance is
    that the handler must track the event filter for each fd, even
    though you cannot support both read and write filters for the same
    fd in one kqueue.  The handler maintains a separate bitmask for fd
    filters (1 == EVFILT_IN, 0 == EVFILT_OUT).
  (adam)
  
- server side includes

  added native server-side includes based on the docs from apache:
  http://httpd.apache.org/docs/mod/mod_include.html
  
  not supported are:
  - exec 
  - nested virtual 
  - config.errmsg
  - echo.encoding

24.07.2004 
- fdevents

  added a bitset to figure out if we received a event for an unregistered fd
  in rt-signal (adam)

- kqueue

  added kqueue support (Matt Levine)

13.07.2004 08:58
- configfile

  parse keys correctly that contain a digit (Geoff Adams)
  
- fcgi

  fixed large post uploads (Geoff Adams)
  fixed uri if docroot is set (Geoff Adams)

03.07.2004 22:50 - 1.2.3
- index-files

  rewrite uri.path to the index-file instead of keeping it at .../
  this fixes index-file handling in FastCGI/CGI docroot is used
  
- close-on-exec 

  enable close-on-exec handling to simplify FD handling in CGI code
  
- cgi

  keep error-log-fd open to catch the error handling for execve()
  
  report error if cgi-exec file doesn't exist
  
- proxy

  pass page-content on error to the user (E.R.)
  code cleanup (E.R.)
  
- ssi 

  first skeleton of a plugin for ServerSideIncludes
  
- security

  limit the headerlength again to 64k max

03.07.2004 14:23
- configure

  fixed compile-check for libpcre if pcre-config doesn't point to /usr/lib

02.07.2004 18:17
- buffers

  always allocate a multiply of 64bytes. this should reduce the number of
  realloc()s and still doesn't has a too high overhead.

02.07.2004 11:07
- fds

  connect stdin, stdout and stderr to /dev/null instead of just closing it
  use dup2() instead of dup()
  
- accesslog

  if accesslog.filename starts with a | spawn a process which will get data
  in one chunk once in a while

01.07.2004 11:00
- sample config

  added text/css and text/javascript mimetypes

28.06.2004 12:18
- proxy module

  added a proxy module (based on the fastcgi module) and added some
  documentation

25.06.2004 21:41
- last-modified handling

  replaced %Z by GMT. otherwise the last-modified check will most often fail.

24.06.2004 20:20
- relax http-parser

  don't reply 400 in case of an empty header-field, just ignore it

23.06.2004 22:10
- file-cache

  don't cache mmap() for files larger than 64k as we run out of RAM otherwise
  too fast (check with some 200mb files)

- 64bit fixes

  fixed buffer_equal on sparc64

15.06.2004 19:09 - 1.2.2
- mmap cache

  fixed mmap-caching in network_write.c and network_writev.c after a direct
  hint by E.Rodichev 

- sendfile + linux

  check at config-time if sendfile() works on Linux

11.06.2004 15:09
- fcgi + unix sockets

  added support for unix domain sockets (spawn-fcgi 1.2.0 required)

10.06.2004 11:49
- configure

  use pcre-config to determine the position of the pcre headers

05.06.2004 22:06
- filehandle-cache

  remove mmap-segment if filecache gets invalidated

30.05.2004 14:13 - lighttpd 1.2.1
- response headers

  request headers that appear twice are grouped together like expected by
  the CGI spec (concat with a ", ")
  response headers behaved the same way but are not grouped anymore. They
  stay seperated. Actually they are concated by \r\n<key>: <value> which is
  the same in the end.
  
- file uploads

  the handling of longer post requests is fixed now.

28.05.2004 09:13
- cgi

  added support for direct calls to cgi-binary

22.05.2004 21:58
- pipeling

  the code cleanup is finished successfully. Now all cases of pipelining are
  handle the right way. POST pipelining was still not working up to now.
  
22.05.2004 12:55
- code cleanup

  use the well-tested code from the write-queue as the base for the
  read-queues and simplify the pipeline handling alot that way.

20.05.2004 15:08
- network backends

  enabled sendfile support again (__FreeBSD__ instead of __freebsd__)
  
  added a mmap cache as part of the filedescriptor cache
  
  added AIX specific send_file() support (untested)

20.05.2004 10:40
- segfaults

  fixed some minor segfaults on startup when no config file is used.

17.05.2004 10:58 - lighttpd 1.2.0
- documentation

  reformated the documentation the doc/ directory
  
15.05.2004 14:45 
- localizer

  fixed build of localizer extension

15.05.2004 12:35
- POST requests

  there is no need to die if we spot a simple POST request on a static file
  
- pipelining

  fixed HTTP/1.1 pipelining which caused the problems with opera

- array handling

  how did that bug survive such a long time ? a wrong compare function was
  used in one case, but not the other.

15.05.2004 03:20
- secure and fast downloads

  added a module which allows secure and fast downloading of files:
  1. the application (.php, ...) controls the access to the files
  2. the webserver is handling the transfer (and check the app generated
     tokens)
     
  the token is based on 
  - a secret
  - a timestamp
  - the filename
  this means even if the token is is distributed by the user it will get
  invalid after a given timeout (default 60 seconds)
  
- errorfiles

  check for errorfiles before using them
     
- code cleanup

  applied cleanup fixes from adam

14.05.2004 18:47
- fdevent handling

  added a more generic callback interface to the fdevent structures which 
  simplifies the writing of plugins. this might destabilize lighttpd for a
  while
  
- cgi

  fixed header parsing of the header is sent in chunks and the terminator is
  sent in a single chunk
  
- EINTR

  fixed some occurences of EINTR which read()

03.05.2004 23:55
- portability

  E.R.:
  * portability fixes for Solaris 2.5

02.05.2004 10:15
- Expect: Handling

  added incomplete support for Expect: 100-continue (RFC 2616 8.2.3) by
  sending always 417 for every Expect-request (see 14.20)
  
  we have been blamed for not supporting it: 
  http://lists.w3.org/Archives/Public/ietf-http-wg/2004JanMar/0059.html

29.04.2004 23:07 - 1.1.9
- usertracking

  added a very basic usertracking cookie handler

29.04.2004 19:37
- network-writev
  
  Adam:
  * call munmap() on error in write()
  
- docs
  
  E.R:
  * documented 'check-local' 
  
- test-env

  made the shell scripts more portable (checked with zsh, bash and ksh)
  
  fixed compilation on NetBSD

28.04.2004 22:22
- FastCGI

  E.Rodichev:
  * added "Authorizer" mode for FastCGI

27.04.2004 18:08
- ssl

  Alexey Slynko:
  * handle SSL_ERROR_WANT_READ or SSL_ERROR_WANT_WRITE in SSL_write the
    right way.   

- FastCGI

  add 'check-local' instead of the implicit 'if-docroot-is-set' handling
  implemented at 24.04.2004 14:34

  E.Rodichev:
  * remove useless extra-/ in before uri.path
  * add 'prefix' notation for FastCGI processes

26.04.2004 16:52
- code cleanup

  patches from Alexey Slynko:
  * remove the pidfile if lighttpd terminates the normal way (if not in chroot)
  * init SSL before getting daemonized

25.04.2004 19.15
- mem-leak

  fixed mem-leak on broken HTTP-headers
  
- FastCGI

  patches from E.Rodichev:
  
  1. CONTENT_LENGTH
  "If no data are attached, then this metavariable is either NULL or not
  defined".
  
  2. QUERY_STRING
  If the Script-URI does not include a query component, the QUERY_STRING
  metavariable MUST be defined as an empty string ("").
  
  3. Doubling of REMOTE_ADDR removed.
  
  patches from adam:
  * fixed bug in the sizeof() patches from yesterday.
  * some more *_long to *_off_t 

24.04.2004 14:34
- FastCGI

  don't check for localfile if 'docroot' for a FastCGI host is specified.

24.04.2004 12:13
- POST

  fixed POST request handling
  
- chunk-encoding

  the generated HEX strings where broken since the 1.1.8
  (this effected all HTTP/1.1 requests without Content-Length like FastCGI-PHP)

- code cleanup

  patches from adam:
  * malloc + memset -> calloc
  * sizeof(int) -> sizeof(<variable>)
  * assign fd_set instead of memcpy()
  * init fd -> connection fd pointers to -1
  
16.04.2004 08:48 - 1.1.8
- code cleanup
  
  don't reuse buffer > 64k (see settings.h)
  
  added server.max-request-size to limit the maximum request-body size 
  (in kBytes)
  
  don't accept HTTP-request headers larger then 32kBytes (see settings.h)
  
  minor speed improvements in the request-parser
  
  More cleanup patches from adam:
  
  * change pre-ANSI C/valid C++ syntax for function declarations/definitions
    from using () to (void).  Ex: int foo(); --> int foo(void);
  * use static linkage as much as possible, to limit possible symbol
    collisions
  * whack more unneeded variables
  * try and prevent any errno clobbering by storing the old errno value before
    any subsequent system calls, and restoring before function exit.  
  * change printf syntax for unsigned variables from %d to %u
    
15.04.2004 18:41
- code cleanup

  handle all int != size_t cases in fcgi.c correctly
  
  check headerfields to have a value
  
  handle both EINVAL cases of writev() before the can occur
  
  limit content-length to SSIZE_MAX 
  disallow negative content-length
  
  the usage of ltostr() has been reduced to the minimum in favour of 
  buffer_/append|copy)_(long|off_t)
  
  dropped ultostr() and ultohex() in favour of buffer_*

15.04.2004 16:35
- portablity 

  more patches from adam:
  
  * remove warnings for unused parameters and variables
  * remove warnings for mismatched pointer assignments
  * change "gtime_r" to "gmtime_r"

13.04.2004 20:48
- test-cases 

  made the 'make check' target self-contained
  
  In our case we have to call the targets in the following order:
  
  $ ./configure ...
  $ make 
  $ make install
  $ make check
  
  because the path to the plugins is hardcoded in the binary itself
  
  using 
  
  $ ./configure --prefix=/tmp/lighttpd-1.1.x/
  ...
  
  will help if you don't really want to install before testing.

13.04.2004 00:05
- portability 

  adam sent another patchset:
  
  * Wrap PCRE-specific data member access with an #ifdef
  * Add const to pointer using return value from dlerror()
  * Explicitly initialize pointer in the lemon parser to 0,
    in order to catch missing else { } clause
  * Use a time_t rather than an int for gmtime() call.  On some
    systems (including 32- and 64-bit SPARC) time_t is a long.

12.04.2004 17:00 - 1.1.7
- fastcgi

  strip WS after HTTP-response headers coming from the FastCGI process
  
  added REMOTE_USER to the Server->FastCGI headers
  removed HTTP_AUTHORIZATION from the Server->FastCGI headers

12.04.2004 10:24
- cgi

  if we don't get a partial HTTP-response-header send the content out as soon 
  as the cgi script is finished

12.04.2004 01:23
- compression

  added bzip2 compression (supported by w3m)

12.04.2004 00:12
- configfile

  add some usefull error messages if the tokenizer or the parser fail to 
  read the configfile

11.04.2004 22:04
- configure

  added --with-ldap and --disable-lfs to the configure options

11.04.2004 20:28
- 64bit offset size

  disable linux-sendfile support for linux 2.4.x for now as it don't 
  support 64bit transfers 
  
  fixed all assignments on the path from the stat() to the Content-Length
  HTTP-header

- head requests
  set content-length in HEAD requests
  
- accesslog

  write accesslog entry on network error
  
  write the correct amount of byte written to the accesslog
  
11.04.2004 11:48
- code cleanup

  moved the config for the cgi-plugin from config.c to the plugin.
  
  moved some buffers which were only used by a one or two plugin from
  the server-structure to the plugins
  
  keeping the plugins independent from the server-core is a 'good thing'

10.04.2004 19:06
- configfile parser

  removed the leaks from the configfile parser

09.04.2004 23:15 - 1.1.6
- stricter http-parser

  added line-folding although noone really seems to use it.

09.04.2004 18:42
- configfile parser

  the hand-written configfile parser has been replaced by a LALR(1) one.
  'lemon' from the sqlite guys has been used to generate the parser.

- by-host, by-url, by-file, by ... 

  $HTTP["url"] =~ "~$" {
    access.deny = "all"
  }
  
  $HTTP["host"] =~ "." {
    simple-vhost.server-root    = "/home/weigon/wwwroot/servers/"
    simple-vhost.default-host   = "grisu.home.kneschke.de"
    simple-vhost.document-root  = "pages"
  }
 
  $HTTP["host"] == "incremental.home.kneschke.de" {
    server.docroot              = "/hasdasd"
  }
  
  at least the parser can handle it now. Currently there is no real support
  for this context-based config-option. But the syntax and the parser are
  done.
  
09.04.2004 10:58
- ssl support

  enable ssl support again
  
- mmap

  enabled mmap+write again 
  
08.04.2004 12:34
- stricter http-parser

  based on a thread at 
  
  http://lists.w3.org/Archives/Public/ietf-http-wg/2004JanMar/0050.html
  
  the HTTP-parser has been adjusted to be more correct when it comes to 
  request-header fieldnames
  
  the whitespace handling around the ':' has been relaxed as requested
  
07.04.2004 17:06
- sigaction

  use sigaction instead of signal if possible

07.04.2004 13:55
- accesslog

  use localtime-timestamps in accesslogs if struct tm has a tm_gmtoff field

07.04.2004 10:41 - 1.1.5
- -D_REENTRANT

  solaris + localtime_r() needs it

07.04.2004 02:54
- mod_auth + ldap

  added a ldap backend to the auth plugin.

06.04.2004 13:37
- pidfile

  fixed the permissions of the pidfile (Matthijs van der Klip)
  
- specfile

  merge the RedHat and SuSE specfile with Matthijs
  
- 64bit file-offsets

  moved the FILE_OFFSET_BITS settings from the config.h the Makefile to enable
  64bit offsets the right way

06.04.2004 12:32
- mod_expire

  added an apache compatible mod_expire which adds Expires: headers to the
  request
  
  expire.url = ( "/buggy/" => "access 2 hours" )

05.04.2004 22:34
- solaris devpoll

  forgot to provide the infrastructure to actually enable the devpoll event
  handler. the same has been done for the freebsd-kqueue handler (which
  doesn't work yet)
  
  fixed the devpoll support while testing it on a real solaris box

05.04.2004 09:49
- debian

  added debian packaging support written by Vincent Wagelaar
  
- solaris

  Another set of patches for Solaris from Adam
  * Detect <sys/devpoll.h>
  * Detect and include <sys/filio.h> for definition of FIONREAD
  * Detect and link against the library exporting hstrerror
  * Correct typo in SENDFILE_LIB
  * Use__sun instead of __solaris__ for detecting operating system.
    Please see http://predef.sourceforge.net/preos.html for more
    detail
  * Explicitly cast arguments to isalpha() and toupper() to unsigned
    char.  The man page says that the functions support the range of
    an unsigned char, and EOF.
  * Include <limits.h> and define UIO_MAXIOV as IOV_MAX for Solaris.

04.04.2004 18:05 - 1.1.4
- pidfile

  added pidfile writing after deamonizing

04.04.2004 01:05
- fdevent

  added framework for freebsd_kqueue and solaris_devpoll
  
  the solaris_devpoll one might event work (untested)

03.04.2004 16:41
- network 

  added framework for filebased chunks
  - read-write + mmap-write
  - linux-sendfile
  - freebsd-sendfile
  - solaris-sendfilev (untested)
  
  and memorybased chunks
  - write
  - writev
  
  made TCP_CORK a 'global' flag around the write_chunkqueue-calls
  
  the writev() support should improve the performance for all non-static
  pages. 
  
  170 req/s against 158 req/s for the following script if writev() is used
  instead of write()
  
  <?php
  
  for ($i = 0; $i < 1000; $i++) {
      print $i."<br />\n";
      flush();
  }
	  
  ?>

28.03.2004 13:42
- cleanup

  applied some cleanup patches submitted by Adam:
  * variables modified in signal handlers should be sig_atomic_t
  * assert statements should not have side effects
  * STD{IN,OUT,ERR}_FILENO preferred instead of {0,1,2}
  * dieing --> dying
  * SEGFAULT calls abort directly, instead of derefencing a NULL pointer
  
- mod_accesslog

  modified the accesslog format to be CLF compatible
  set locale for LC_TIME to C
  
26.03.2004 16:13 
- path info

  enabled the pathinfo code again
  

25.03.2004 13:30 - 1.1.3
- portability 

  compiles fine now without any patches on IRIX
  
- hostname detection

  reworked "get the hostname for HTTP/1.0 requests which don't specify a
  Host: ..." to only query the name in this single case for the server side
  of the connection
  
- errorlog handling

  stderr is only used until the errorlog is init'ed
  if no error-log is specified, syslog() is used
  if cycling error-log fails, syslog() is used
  
- accesslog cycling

  don't fall back to stdout anymore

- event-handler

  use poll() as the default event-handler again

24.03.2004 01:37 - 1.1.2a
- error messages

  added some hints to the failing error-messages

22.03.2004 01:58 - 1.1.2
- configure

  some protability changes to get the 'inline' working with the MIPS CC
  
21.03.2004 22:00
- mod_rewrite, mod_redirect

  reading the config for those two plugins was not working
  
- fdevents

  changed the compile time setting for the event handling into a run-time
  setting.
  
  server.event-handler = "select" # poll, linux-rtsig, linux-sysepoll
  
  added sys_epoll() for linux 2.6
  
  select       - all systems
  poll         - Linux 2.1.23+, all XPG4-UNIX
  sigio        - linux 2.4.0+ 
  sysepoll     - linux 2.5.66+
  
           1000-4k-nok   1000-100k-nok
  select       1776.99          296.52
  poll          678.02          607.28
  sigio        3754.46         1411.23
  sysepoll     3817.67         1431.02

21.03.2004 00:10
- configure script

  rewrote large parts of the lib/header detection of the configure script

20.03.2004 01:39
- fastcgi

  as the docroot on external hosts might be different than the webserver
  docroot it can now be specified in the config:
  
  fastcgi.server            = ( ".php" =>
				( "grisu" => 
				  ( 
				    "host" => "192.168.2.41",
				    "docroot" => "/home/jan/servers/",
				    "port" => 1026
				  )
				)
			      )
			      
  a huge internal cleanup in the config handling made the code more readable.
  some more warnings and error checking should track most of the config
  errors for the fastcgi plugin 

19.03.2004 12:34
- external patches

  Matthijs van der Klip submitted three nice patches:
  - turn off writing in mod_status if status.rrd-reports is set to disable
  - fix for a debug message
  - get the hostname for HTTP/1.0 requests which don't specify a Host: ...
  - rc-script for RedHat
  
- documentation

  added a documentation section about authentification
  - doc/authentification.txt

19.03.2004 05:11
- optimizations

  implemented special versions of 
  - strcasecmp (array_strcasecmp)
  - isdigit, isalpha, isalnum (light_*)
  
  added a faster check for a finished header
  
  after disabling all modules it is still possible to get 20 kreq/s.

15.03.2004 19:45 - 1.1.1
- localizer server

  added the localizer-server module to the code 
  
- chunked-encoding

  Apple's Safari or HTTP-Handler doesn't handle chunked-extensions defined by 
  RFC 2616 correctly and doesn't ignore them. Disabled the chunked-extension
  which were just used for debugging purposes.

07.03.2004 12:20
- optimization

  moved the checks if a plugins support a given function from the dispatcher
  (plugins_call) to plugins_call_init() to do the check only once.
  
  equalized the plugins functions to only two types:
  SERVER_FUNC()
  CONNECTION_FUNC()
  
  replaced all handwritten plugin_call-handlers with macros
  
  made all plugin-functions 'static'
  
  with all plugins loaded we are at 15kreq/s gain
  without any plugin loaded at 16kreq/s
  
  before the change we were at 13kreq/s

06.03.2004 21:13 
- compilation fixes

  fixed some warnings on FreeBSD and NetBSD by adding
  #include <netinet/in.h> 
  
  ifdef'ed a pcre-entry in base.h
  
  remove #define _XOPEN_SOURCE from http_auth.c for IRIX
  crypt() on Linux needs _XOPEN_SOURCE

06.03.2004 19:18 - 1.1.0
- authentification

  added htpasswd and htdigest backends to work against user-files generated
  by htpasswd and htdigest.
  
  for basic auth:
  - plain
  - htpasswd (crypt only)
  - htdigest
  
  for digest auth:
  - plain
  - htdigest
  
06.03.2004 17:35
- authentification

  check the method in the authorization header againt the configured method 

06.03.2004 14:54
- hostname parsing

  added a RFC-2396 conforming "Host:" parser
  added 17 checks for the parser

06.03.2004 10:25
- configuration

  added a warning for unknown configuration variables.
  
  dropped the 'specific-for.url' ideas for now as it is not known yet how to
  implement it the right way
  
  renamed some config-variables to reflect there actual meaning
  - server.host -> server.bind
  - server.virtual-* -> simple-vhost.*
  - server.userid -> server.username
  - server.groupid -> server.groupname
  - server.docroot -> server.document-root
  

05.03.2004 15:36
- fastcgi

  internals: moved all mod_fastcgi settings from the global struct to the
    plugin itself

- vhosting
  
  got a patch for enhanced virtualhosting from christian kruse -> mod_evhost
  
  moved the virtual hosting config (server.virtual-*) to it's own module
  called mod_simple_vhost

23.02.2004 10:06
- configfile
  
  rearragned the config-file structure again to be able to add settings for
  a given URL, Host, Filename, ... 
    This change affects some config-options directly (access.deny,
  url.rewrite, url.redirect, virtual-hosting, ...)
  
  added 'specific-for.url' for url specific config settings 
  
- digest auth

  FIX: md5-sess type
  
  seperate the auth-backend stuff

13.02.2004 22:23 - lighttpd 1.0.3
- content-length + POST

  FIX: If header and content didn't fit into one single packet the rest of
       the content was not read correctly

13.02.2004 01:07
- content-length + POST

  the check for content-length on a POST request vanished somehow in one of
  the previous releases.

- header search

  FIX: the search for header fields was up to now case-sensitive. Now it is
       like required by the standard case-in-sensitive.
       
- browser bugs
  
  w3m 0.2.5 adds an additional \r\n at the end of the POST requests which is
  handled now
 
10.02.2004 10:12
- start script

  took the suse rc-skeleton which states to be LSB compliant and modified it
  for lighttpd needs
  
09.02.2004 11:48 
- HEAD requests

  FIX: HEAD requests for static files delived the content from the GET
       request. (test case is added)

08.02.2004 15:53 
- directory listings
  
  FIX: the pathname has not encoded at all before it was transfered to the 
       browser. a proper url and html-encoding has been added.
  
  added modification-time and filesize to the output 
  
  added a basic css for the virtual listings

07.02.2004 22:15 - lighttpd 1.0.2
- sample configfile

  rearranged the config-file to have all the important options at the top
  
- docs

  added a mod-rewrite options
  
- mod_accesslog

  stdout is no longer used a default for the accesslog
  
- error-messages

  the 404 is now reported in the error-log

07.02.2004 17:30
- configfile handling

  if a key is used twice like
  
  url.rewrite = ( "url1" => "url") 
  url.rewrite = ( "url2" => "url") 
  
  you get an error now. You have to write:
  
  url.rewrite = ( "url1" => "url", 
                  "url2" => "url") 

31.01.2004 12:22 - lighttpd 1.0.1
- log cycling

  added a sighup-handler to the plugin interface and fixed the log-cycling
  for access-logs
  
- portability
  
  disabled the interval-time optimization on IRIX

- documentation
  
  added a lot of new documentation to README

31.01.2004 10:59
- status module

  added two new options rrd-dir and rrd-reports:
  
  rrd-reports = (boolean)  # enables RRD-reports
  rrd-dir     = (string)   # path for the daily status-files
  
  fixed the "status-files in /"-bug this way
  

22.01.2004 13:38 - lighttpd 1.0.0
- simple docroot

  fixed handling of docroots if virtual-host is disabled

27.12.2003 11:12
- license handling

  added the first interface to license handling.

25.12.2003 23:48
- protability

  Verified again that the code compiles and runs cleanly on Linux, FreeBSD,
  NetBSD and IRIX
  
  compiling with gcc and the option -pedantic works fine
  compiling with mipspro cc works fine, too
  
- tests

  added some more tests: 39 tests

25.12.2003 16:01
- protability

  some compile fixes for FreeBSD have been applied and a new switch has been
  added to choose between IPv4 and IPv6 on FreeBSD. 
    (cmdline: -6, configfile: server.use-ipv6)

- packaging
  
  cleaned up the specfile for building RPMs

21.12.2003 01:00
- authorization

  brought basic and digest auth back to life. this module as the last one
  which had to be updated after the config-file changes

- test harness framework

  add 3 tests for basic auth

20.12.2003 22:10
- compression

  added gzip compression (gzip-header + deflate + crc)
  
- test harness framework

  added a 22 tests to verify the correct behaviour of lighttpd

- request parsing

  GET http://www.yahoo.com/ HTTP/1.0
  
  is handled now as
  
  GET / HTTP/1.0

- plugins

  moved FastCGI and CGI handling into modules which can be loaded at run-time

17.12.2003 13:18
- compression

  the directory structure is now build automaticly

15.12.2003 01:00
- compression 
  
  added a compression cache to the compression module (mod_compress)

  Vary: Accept-Encoding is set now as it influences to delivered stream of
  bytes. This is important for caches.

10.12.2003 00:24
- config files

  a new config-file format is ready for the final release of lighttpd.
  
  it supports:
  
  server.docroot   = "string"
  server.host      = integer
  server.modules   = ( "string", "string" )
  server.mimetypes = ( "key" => "value" )
  server.complex   = ( "key" => ( "string", integer ), 
                       "string", 
		       integer )
  
  the syntax should look familar to all who worked with Perl or PHP.
  
  config-file handling has been seperated into a parser and a lexer. Both
  are currently written by hand and will propably be rewritten into bison +
  flex if time permits. But that would be a cosmetical change.

05.12.2003 03:07
- status-page

  improved the status page to display
  - the current connection-stati
  - average throughput over 5 seconds 
    (requests/s and output-bound traffic)

  now you can see what is going on in the server
  
- access-log

  the accesslog is now a module and can be disabled by just removing the
  plugin from the list of loaded plugins

04.12.2003 16:18
- chroot-ing

  how-to: using chroot
  
  - chroot to /home/www/
  - docroot at /servers/<hostname>/pages/
  - defaulthost www.example.org
  
  e.g. (external view)
  /home/www/servers/www.example.org/pages/index.html
  
  (in chroot)
  /servers/www.example.org/pages/index.html
  
  config:
  
  chroot  /home/www/
  userid  wwwrun
  groupid nogroup
  
  virtual-server-root /servers/
  virtual-server-default-host www.example.org
  virtual-server-docroot /pages/
  
  The FastCGI process is living outside this chroot definition as it is 
  started seperatly.
  
01.12.2003 02:06
- cleanup

  in preparation for the first stable release some internals had to be
  cleaned up. Basicly it was a cleanup of workflow of the creation of the 
  response-header. All modules can use a clean interface for this purpose 
  now. This is espacially usefull for all modules which have to pass some
  HTTP-headers to the client.

29.11.2003 22:22
- modules

  finally moved the modules to shared libraries and cleaned up some code
  path to become more readable.
  
  So far we have:
  
  mod_rewrite
  mod_redirect
  mod_access
  mod_auth
  mod_cache
  mod_chat
  mod_status
  mod_maps

28.11.2003 18:16
- redirects

  as lighttpd supports url-rewriting redirection was a few lines of new code.
  
  redirect ^/wishlist/(.+)    http://jan.kneschke.de/wishlist/$1
  
  rewrite  ^/wishlist/(.+)    /new/wishlist/$1

28.11.2003 17:00
- signal stuff 

  setitimer is used to send a event every second to call time() only once a
  second. another system call which has been remove from the main-loop.
  
  sending HUP to lighttpd will close and re-open the logfiles. this is used
  for cycling logfiles.
  
#! /bin/sh

### 
#
# a simple logfile rotator for lighttpd
#

DATE=`date +"%Y%m%d-%H%M"`
LPID=`pidof lighttpd`
mv access.log access.log.${DATE}
kill -HUP ${LPID}
gzip access.log.${DATE}

27.11.2003 01:07
- native win32 port

  a first attempt for a native win32 has been done. For now mingw is the
  base for the development as it provides a basic unix-like framework for
  building native win32 applications.
  
  the most internal files have been ported and the over all progress is
  going well. At the end this will just be a prove of concept.

26.11.2003 01:17
- access denied

  added a access-deny filter to block specific urls like
  
  access-deny ~
  access-deny .inc

17.11.2003 01:06
- bug fixing

  a fstat() on a opened fd which has changed reports wrong the file-info.
  Using stat() again helps to solve this problem.
  
  the sig-io version doesn't suffer from this problem.
  
  the etags are now used for verifing file-cache-entries.
  
- chat
  
  enabled the internal login mechanism again
  
  added support transfering session-infos over MySQL.

15.11.2003 00:19
- optimizing

  added a buffer_equal_reverse function which is optimized version of strcmp
  which is going backwards as pathnames are often the same for in the first
  bytes.
  
  wrote a one-pass parser for the request-header. The combination of
  strstr(..., "\r\n") to seperate lines and strchr(..., ':') to seperate
  keys from values more or less touched every byte twice.
  
  we are still at 18.000 req/s for 4kb keep-alive requests even with etags
  and handling all header fields.

14.11.2003 17:26
- fcgi
  
  Content-Type wasn't passed correctly to the FastCGI app. HTTP_CONTENT_TYPE
  was sent instead.
  
- cache
  
  provided access to the Session-ID
  
- error-log

  the timestamp is now written in a human readable form

22.10.2003 00:06
- fcgi, cgi

  added a special set of array-functions which are optimised for the "insert
  only once" case. 
  
  this provides access to the headers which are now forwarded to the external
  interfaces. Before this change only a limited set of request-headers were
  forwarded.
  
21.10.2003 11:58
- modules 

  added a new module-hook after the basic-init of the module for handling
  config-settings and prepare the overall operartion (like building
  db-connections, compiling regexes, ...)
  
- cache

  use turckmm-cache 2.4.3 to get some numbers for the php-latency:
  
  /usr/sbin/ab -n 10000 -c 10 http://alba.home.kneschke.de:1025/index.php
  
  handling the cache-decision and the cache-hit in php:
  
    cache-miss: 100% (-&gt; $version = 0)
  
    plain        : 108.13 req/s
    turckmm-cache: 218.39 req/s
  
    cache-hit: 100% (-&gt; $version = 1)
  
    plain        : 164.45 req/s
    turckmm-cache: 653.98 req/s
  
  handling the cache-decision and the cache-hit in the server:
  
    cache-hit: 100%, but using index.cml
  
    cml:           4918.84 req/s (no keep-alive)
    cml:           6901.31 req/s (keep-alive)
    
    cache-miss: 100%, but using index.cml
    
    plain        : 108.39 req/s
    turckmm-cache: 217.84 req/s
  
  Conclusion:
  - there is no loss in the cache-miss case through the cml-handling
  - the cache-hit case can be improved dramaticly with lighttpd-cache
  - turckmm-cache improves the cache-miss case alot
    
20.10.2003 00:40
- cache

  the first 'real-life' test showed dramatic improvements in the req/s
  handling.
  
  The basic idea was to move the decision if a php-page can be taken from
  the cache from the php-code to the webserver. 
  
  See here why this is a good thing:
  
  the quite common code which works for http://jan.kneschke.de/ is using
  templates and is quite static, but depends on 4 external files (the
  menu-structure, the template, the current content, the class-file).
  
  the index-file is always:
  
  include_once "jk.inc";
  
  $v = new view();
  print $v->get(array(array ("file" => "content.html")));
  
  It is more or less the same for all pages.
  
  This basic setup can deliver 100 requests/s. 
  
  The next step has: 
  - application bases caching
  
  as we know that each pages depends on those 4 files, you can check if they
  have been modified since the last request and deliver the content from the
  cache otherwise.
  
  this increased the throughput to 150 req/s. (cache-hit ratio 100%)
  
  The next logic step is to move the decision-making process out of the PHP
  code as PHP is to slow for the cache-hit path:
  
  a CML (Cache-Markup-Language) has been written which describes the whole
  decision process which has been written in PHP-code before:
  
  
output.content-type text/html
  
output.include _cache.html
  
trigger.handler index.php
  
trigger.if  file.mtime("../lib/php/menu.csv") > file.mtime("_cache.html")
trigger.if  file.mtime("templates/jk.tmpl") > file.mtime("_cache.html")
trigger.if  file.mtime("content.html") > file.mtime("_cache.html")

  if one of the 'trigger.if' statements is true the 'trigger.handler' is
  called to generate the pages.
  
  if none of the them is trigger the files from 'output.include' are sent to
  the browser with content-type specified in the first line:
  
  The result was very 'promissing': 
  
  5900 req/s with keep-alive
  3800 req/s without keep-alive

  (both for a cache-hit ratio of 100%)
  
  for keep-alive this is factor <b>59</b> against the plain un-cached
  version and still <b>39</b> againt the php-cache-version which is doing
  exactly the same.
  
  Time for party. :)
  
19.10.2003 - 18:55
- cache

  the handling of functions has been improved. they are now 'plugable'. just
  the dlopen() stuff is missing.
  
  a new datatype has been added: the string
  
  this makes it possible to evaluate something like:
  
trigger.if unix.time.now() - file.mtime("head.html") > 30
trigger.if mysql.query("SELECT count(*) " + \
                       "  FROM structure AS struc, session AS sess " + \
		       " WHERE struct.user = sess.user" + \
		       "   AND sess.id = \"" + mysql.escape("ab\"c") + "\"")
		       
  you see: 
  - string operations (concat)
  - handing of escape-sequences
  - functions
  - comparisions

18.10.2003 - 13:39
- cvs

  imported everything into the cvs server which makes the whole revision
  handler a lot easier. The CVS server was up all the time but not used.
  Importing required 5 minutes of work which included merge the freebsd and
  the linux tree.
  
- compilers + platforms

  on a regular various compilers and platform are check to compile with with
  the current code base:
  
  platform | os                  | compiler     | state
  ---------+---------------------+--------------+---------
  ia32     | Linux 2.4.22        | gcc 2.95.3   | ok
  ia32     | FreeBSD 5.1-CURRENT | gcc 3.3.1    | ok
  mips64   | IRIX 6.5            | gcc 3.2.2    | ok
  misp64   | IRIX 6.5            | MIPSpro 7.41 | ok
  
  the mipspro compiler revealed some warning which resulted in a nice
  code-cleanup that made the code more readable.

18.10.2003 - 03:00
- e-tags and friends

  in preparation for the php-conference at the begin of november in
  frankfurt/main the server has the support some more caching/proxy tags 
  like: 
  - E-Tag (14.19) [done]
  - If-Match (14.24)
  - If-None-Match (14.26) [done]
  - If-Range (14.27) 
  
  Section (13.3.3) binds them together. [RFC 2616]
  
  using lxr.kde.org and lxr.mozilla.org revealed that
  - konqui only uses if-none-match
  - mozilla uses if-none-match and if-range
  
  it looks like it isn't that easy to trigger the if-range case.
  
  As ulf suggested the etag is a hash of file-size, inode-number and mtime. 
  
- fd-caching

  ulf just phoned me ask proposed the free the cache more agressivly in case
  of fd-shortage. increasing the the fd-limit is the better idea. :)

17.10.2003 12:45
- chat
  
  finished the mysql-support for storing the sessions

12.10.2003 20:56
- valgrind

  used valgrind again to verify that the code a free of mem-leaks and found
  a 'leak generator' in the chunk-api. 
  
  the last few leaks were just some missing free()'s at the end of the
  program run which would have been freed anyway.
  
  at the end valgrind couldn't find any missing free()'s.

11.10.2003 12:09
- FastCGI

  reduced the number of system calls for FastCGI to WebServer to 2 calls per 
  fd-event. (ioctl() + read())
  
  this has no direct effect of the performance of the server, but improves
  the possible througput of the load-balancer.

10.10.2003 21:09
- FastCGI - load-balancing

  a brown paper bug has been fixed which caused to decreasing throughput if
  load-balancing was enabled.
  
  
  benchmarking the req/s with load-balancing shows really nice results:


  server   : req/s   comment
  ---------+--------------------------------------------------
  ulf      : 764.06  (php)
  lappi    : 800.06  (php)
  
  ulf+lappi: 1526.95 (2 * php)
  
  grisu    : 1265.66 (php + ab + lighttpd) 
  
  
  all      : 1647.72 (3 * php + ab + lighttpd)
  all(nice): 1904.40 (same as all, but the local php on grisu 
                      has been 'nice -20'd)
  
  
  if a php is run on the load-balancer it has to get a lower priority than
  the load-balancer itself as to handle the work of (here) 3 php-servers.
  

10.10.2003 15:11
- java ?

  http://jakarta.apache.org/tomcat/tomcat-4.1-doc/jk2/common/AJPv13.html

08.10.2003 21:08
- gigE

  Last week 3 RTL8169S gigE cards arrived and were installed in the
  test-framework.
  
  They are very cheap (20 Euros) and are a good start for a low-level
  benchmark network. 
  
  First result show us:
  
  48 Mb/s with ab.
  
  The webserver and the test-server are equipped with a 2000+ AMD CPU. The
  system load 95%, user load is 3%, the rest is idle on both plattforms.

  After some calculations at gets clear that there are various bottlenecks:
  
  1. The PCI-Bus (32bit/33Mhz) can only transfer 133Mb/s 
    - 48 Mb/s TCP-Traffic results in 55Mb/s Ethernet-Traffic (verified with
      slurm) [outgoing]
    - there is about 10Mb/s incomming traffic at the PCI bus which the
      requests
    - the rest of the devices at the PCI bus are eating the last few mb/s 
  2. IRQ-Handling
    - There are reasons why the RTL8169S cards are so cheap
      - they can't send jumbo-frames
      - only 8k/64k buffers which results in a interrupt every 3 packets 
      - they are at least handling checksum offloading for ip, udp and tcp
      
  In the end there is a need for new hardware to limit the throughput by the
  Ethernet again.
  - PCI-X, 64bit-PCI, ...
  - 'real' gigE-Network cards
  - ...
  
  
  BTW: 2.4.22 + the r8139 driver are very flacky and resulted in 3 lock-ups
  for today. 
  
  In another test the dual-PPro-FreeBSD 5.1-CURRENT machine has been used as
  server with a gigE interface (re0) at has shown that the CPU is the limit
  for this combination. The maximum thoughput was 7Mb/s.
  
  Another small benchmark: 
  $ ab -n 1000 -c 10 http://192.168.2.41:&lt;port&gt;/lighttpd-20030925.tar
  
  port  | server          | CPU Idle 
  ------+-------­---------+-----------
  1025  | lighttpd        | 75%
  1026  | thttpd 2.23b1   | 75%
  1027  | boa-0.94.14rc17 | 69% *
  1028  | apache 1.3.x    | 77%
  
  
  In all 4 cases the thoughput was 8600 kbytes/s.
  
  * boa had 9 failed transfers.
  
- FreeBSD 
  
  The problems with FreeBSD 5.0-RELEASE vanished after updating to
  5.1-CURRENT.

26.09.2003 18:22
- FreeBSD
  
  A SMP-machine has been added to the test-farm. It is running FreeBSD
  5.1-RELEASE and will help to the improve the scalability.

  fixed sendfile() handling.
  
- FreeBSD problems

  FreeBSD-5.1-RELEASE-SMP
  2 * Pentium Pro 200 MHz
  192.168.2.38 (doubleheart)
  (webserver [lighttpd at port 1025, thttpd at port 1027])
  
  Linux 2.4.20
  1 * AMD 2000+
  192.168.2.10 (grisu)
  (ab)
  
  Problem:
  Connections are reset by the kernel without any application intervention.
  
  Calling 'ab' (apachebench) at grisu with the following paramters:
  
  /usr/sbin/ab -n 10000 -c 10 http://192.168.2.38:1025/index.html
  
  results in the following output:
  
  ...
  Time taken for tests:   40.610 seconds
  Complete requests:      10000
  Failed requests:        5980
     (Connect: 0, Length: 5980, Exceptions: 0)
  ...
  
  
  This is reproducable and the number of failed requests is always 
  5980 +/- 50 requests. In other words: after 4000 requests tcpdump shows
  the following output:

  tcpdump shows:
  
  00:53:48.923029 192.168.2.10.39774 &gt; 192.168.2.38.1025: S [tcp sum ok]
    1013737315:1013737315(0) win 5840 &lt;mss 1460,sackOK,timestamp 5208461
    0,nop,wscale0&gt; (DF) (ttl 64, id 7918, len 60)
0x0000   4500 003c 1eee 4000 4006 964d c0a8 020a        E..&lt;..@.@..M....
0x0010   c0a8 0226 9b5e 0401 3c6c 6763 0000 0000        ...&amp;.^..&lt;lgc....
0x0020   a002 16d0 eeaa 0000 0204 05b4 0402 080a        ................
0x0030   004f 798d 0000 0000 0103 0300                  .Oy.........

  00:53:48.923330 192.168.2.38.1025 &gt; 192.168.2.10.39774: S [tcp sum ok]
    1803860672:1803860672(0) ack 1013737316 win 65535 &lt;mss 1460,nop,wscale
    1,nop,nop,timestamp 4459794 5208461&gt; (DF) (ttl 64, id 6821, len 60)
0x0000   4500 003c 1aa5 4000 4006 9a96 c0a8 0226        E..&lt;..@.@......&amp;
0x0010   c0a8 020a 0401 9b5e 6b84 bac0 3c6c 6764        .......^k...&lt;lgd
0x0020   a012 ffff d4ce 0000 0204 05b4 0103 0301        ................
0x0030   0101 080a 0044 0d12 004f 798d                  .....D...Oy.

  00:53:48.924009 192.168.2.10.39774 &gt; 192.168.2.38.1025: . [tcp sum ok] ack 1
    win 5840 &lt;nop,nop,timestamp 5208461 4459794&gt; (DF) 
    (ttl 64, id 7919, len 52)
0x0000   4500 0034 1eef 4000 4006 9654 c0a8 020a        E..4..@.@..T....
0x0010   c0a8 0226 9b5e 0401 3c6c 6764 6b84 bac1        ...&amp;.^..&lt;lgdk...
0x0020   8010 16d0 e9c3 0000 0101 080a 004f 798d        .............Oy.
0x0030   0044 0d12

  00:53:48.924150 192.168.2.10.39774 &gt; 192.168.2.38.1025: P [tcp sum ok]
    1:29(28) ack 1 win 5840 &lt;nop,nop,timestamp 5208461 4459794&gt; (DF) 
    (ttl 64, id 7920, len 80)
 0x0000   4500 0050 1ef0 4000 4006 9637 c0a8 020a        E..P..@.@..7....
 0x0010   c0a8 0226 9b5e 0401 3c6c 6764 6b84 bac1        ...&amp;.^..&lt;lgdk...
 0x0020   8018 16d0 27e4 0000 0101 080a 004f 798d        ....'........Oy.
 0x0030   0044 0d12 4745 5420 2f69 6e64 6578 2e68        .D..GET./index.h
 0x0040   746d 6c20 4854 5450 2f31 2e30 0d0a 0d0a        tml.HTTP/1.0....

  00:53:48.924728 192.168.2.38.1025 &gt; 192.168.2.10.39774: R [tcp sum ok]
    1803860673:1803860673(0) win 0 (ttl 64, id 6831, len 40)
0x0000   4500 0028 1aaf 0000 4006 daa0 c0a8 0226        E..(....@......&amp;
0x0010   c0a8 020a 0401 9b5e 6b84 bac1 0000 0000        .......^k.......
0x0020   5004 0000 64ba 0000

  SYN, SYN+ACK, ACK, DATA, RST

  strace shows that no connection attempt has been reported to the
  application which is poll()'ing the server socket.
  
  /* the common loop without any block attempts */
  
  accept(3, {sa_family=AF_UNSPEC, sa_data="\0\0\0\0\0\0\0\0\0\0\0\0\0\0"}, [0]) = 5
  fcntl(5, F_SETFL, O_RDWR|O_NONBLOCK)    = 0
  read(5, "GET /index.html HTTP/1.0\r\n\r\n", 4095) = 28
  stat("/home/jan/lighttpd-0.1.0/servers/", {st_mode=S_IFDIR|0755, st_size=512, ...}) = 0
  fstat(6, {st_mode=S_IFREG|0644, st_size=4348, ...}) = 0
  write(5, "HTTP/1.0 200 OK\r\nConnection: clo"..., 235) = 235
  write(2, "1064875136: (network.c.210) 235 "..., 33) = 33
  syscall_393(0x6, 0x5, 0, 0, 0x10fc, 0, 0xbfbff2c0, 0) = 0
  close(5)                                = 0
  
  /* no futher waiting connections */
  
  accept(3, 0xbfbff700, [1852702730])     = -1 EAGAIN (Resource temporarily unavailable)
  
  /* enter the main-loop */
  
  gettimeofday({1769235301, 1663069807}, NULL) = 0
  poll([{fd=3, events=POLLIN}], 1, 1000)  = 0
  gettimeofday({4294967295, 65537}, NULL) = 0
  poll([{fd=3, events=POLLIN}], 1, 1000)  = 0
  gettimeofday({4294967295, 65537}, NULL) = 0
  poll([{fd=3, events=POLLIN}], 1, 1000)  = 0
  ...
  
  (strace is broken for accept() and gettimeofday(), syscall_393() is sendfile())
  
  after entering the main-loop the webserver doesn't receive any new POLLIN
  events at all for the next 10-15 seconds. Any connection-attempt within
  the period is, as you can see in the tcpdump output, accepted by the
  kernel and the received data is thrown away as the kernel sends a RST.
  After those 10-15 seconds the application gets a POLLIN event for the
  server socket and the normal data-transfer taken place for the next 4000
  requests.
  
  This behaviour is reproducable with thttpd 2.20c and the current lighttpd.
  

26.09.2003 11:42
- localizer

  ported the localizer-server application into a module for lighttpd. After 
  30 minutes the code was ported and funtional. This modules provides access 
  to the localizer-db by a HTTP-Interface and generates the response as 
  HTML, CSV and plain-text.
  
  So far, the module-interface looks good and flexible enough.
  
  7000 req/s is good enough too. Generating the HTML and querying the DB
  needs some time.
 
22.09.2003 08:40
- modules

  introduced a simple module interface which allow to hook into the process
  of handling the requests. Basicly it allows to move the url-rewriter, the
  auth-sub-system and the cache out of the main-code. The module-interface
  will be extended to allow the cgi and the fastcgi sub-processes to be
  moved into a module.
 
15.09.2003 09:36
- error-handling

  fastcgi and cgi connections are now closed correctly if the corresponding
  client-connection has died.
  
14.09.2003 10:40
- cgi

  finally streaming works with CGI, too
  
  this enable support for cgiirc.sf.net and friends which use streaming as
  there transport mechanism.
  
  streaming has been verified with cgiirc-0.5.2.
  
- fdevents

  there where some reports that sigio didn't work as expected. It just
  reported no events at all. Looks like a known bug in the glibc on 
  those platforms.
  
  Using poll() instead solve the problems.

27.08.2003 22:12
- rewrite

  a pcre based rewrite engine has been integrated
  
- cgi

  the file-based cgi interface has been replace by two pipes.

23.07.2003 13:29
- fdevents

  the whole fd-event handling has been reworked and several smaller bugs 
  and design-errors have fixed.
  
  sigio, poll() and select() are working fine again.
  
  On IRIX 6.5 SIGIO could be used, but without further testing poll() is used.
  
- cgi
  CGI-support is still broken.

21.07.2003 18:46
- dnotify

  using the F_NOTIFY feautre of the Linux 2.4.x kernel gives anothre nice
  performance boost as lighttpd can cache the stat()'s the right way, now.
  
  23009.66 @ 5-4k-k which means +10% against 30.06.2003 14:03
  
  for 1000-4k-nok the performace nearly doubles: 3730.23 goes up to 6144.39

17.07.2003 13:21
- FreeBSD

  a small patch (#include &lt;&gt;) to compile lighttpd on FreeBSD again.
  
08.07.2003 10:48
- fileinfo-cache

  A reallife test showed that the cache wasn't perfect at all as it made
  lighttpd crash. This is fixed now.

30.06.2003 17:40
- lighttpd-bench

  After some problems with other benchmarking tools for webservers the first
  version of lighttpd-bench has been written.
  
  It a revealed a nasty strange behaviour which was fixed by increasing the
  listen-backlog from 5 to 1024.
  
30.06.2003 14:03
- fileinfo-cache

  the fileinfo-cache has been relaxed a little bit and there are always 2
  fstat()'s per file-request now. This isn't that dramatic:
  
  21800.74 req/s is still a very good result (7-4k-k).
  
29.06.2003 03:29
- fileinfo-cache

  a fileinfo cache has been added to reduce the number of system-calls to
  stat and open a file. 
  
  in the releases before the same file was stat'ed at least 2 times plus a
  stat on the docroot for each request. Now the stat()'s and the
  corresponding open() + close() calls are cached and the number of system
  calls has been reduced to the minimum:
  
  $ strace -eopen,stat64,read,write,sendfile,accept,shutdown,close \
    -p `pidof lighttpd`

/* first connection */
accept(3, {sin_family=AF_INET6, sin6_port=htons(56211), 
  inet_pton(AF_INET6, "::ffff:192.168.2.10", &amp;sin6_addr), sin6_flowinfo=0, 
  sin6_scope_id=0}, [28]) = 5
accept(3, 0xbffff470, [28])             = -1 EAGAIN
read(5, "GET /index.html HTTP/1.0\r\nUser-A"..., 4095) = 91
stat64("/home/weigon/projects/lighttpd/servers/grisu.home.kneschke.de:1025/pages/",
  {st_mode=S_IFDIR|0755, st_size=3656, ...}) = 0
stat64("/home/weigon/projects/lighttpd/servers/grisu.home.kneschke.de:1025/pages//index.html",
  {st_mode=S_IFREG|0644, st_size=4348, ...}) = 0
open("/home/weigon/projects/lighttpd/servers/grisu.home.kneschke.de:1025/pages//index.html",
  O_RDONLY) = 6
write(5, "HTTP/1.0 200 OK\r\nConnection: clo"..., 235) = 235
sendfile(5, 6, [0], 4348)               = 4348
shutdown(5, 1 /* send */)               = 0
close(5)                                = 0

/* second connection */
accept(3, {sin_family=AF_INET6, sin6_port=htons(56212), inet_pton(AF_INET6,
  "::ffff:192.168.2.10", &amp;sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, [28])
  = 5
accept(3, 0xbffff470, [28])             = -1 EAGAIN
read(5, "GET /index.html HTTP/1.0\r\nUser-A"..., 4095) = 91
write(5, "HTTP/1.0 200 OK\r\nConnection: clo"..., 235) = 235
sendfile(5, 6, [0], 4348)               = 4348
shutdown(5, 1 /* send */)               = 0
close(5)                                = 0


  In the end we have a new speed record:
  
  (ab -c 8 -n 100000 http://192.168.2.10:1025/index.html with poll())
  Requests per second:    23435.67 [#/sec] (mean)
  
  This is a speed increasement of 20-30% against the last internal benchmark.


28.06.2003 02:30
- caching framework 

  the trigger.if directive is working fine. the basic algebra is done ( +,
  -, *, / and comperations =, &lt;=, &gt;=, &gt;, &lt; and the boolean logic
  &amp;&amp; and || including braces)
  
  two basic function are available:
  - unix.time.now
  - file.mtime(...)

25.06.2003 17:33
- caching framework

  added output.include, output.content-type for a cache-hit and
  trigger.handler for a cache-miss. 
  
  the actual decision is made be trigger.if which will be added tomorrow.

15.06.2003 15:33
- sig-io 

  After several other smaller optimisations lighttpd performs better with
  sig-io under high load:
  
                  sigio+poll        poll
  c1000-4k-nok  :    2635.95     1643.39
  c1000-4k-k    :    7335.68     6788.87
  c1000-100k-nok:    2353.49     1217.73
  c1000-100k-k  :    3097.89     2080.73
  
  
  The user-space part has been optimized a lot. Now it is time to optimized
  the number of context-switches between user and kernel-mode.
  
  user    0m0.180s
  sys     0m1.160s
  
  a fileinfo-cache is the way to go.
  
  struct {
  	 buffer *name;
	 struct stat st;
	 int handler;
	 ...
	 
	 int fd;
	 void *mmap_p;
  }

11.06.2003 14:57
- sig-io is back again

  and it works fine.
  
  sigio (Realtime-Signals under Linux 2.4.x) sends one signal per event and
  buffers the rest of the events in a kernel queue. If the is full a SIGIO
  is sent and poll() gets all events at once for further processing.
  
  
  Currently the behaviour is a little bit strange:
  - sig-io + poll() is good for non-keep-alive connections
  - poll() for keep-alive connections
  
  c1000-4k-nok: (1000 concurrent request, 4k filesize, no keepalive)
  poll      : 1521.38
  sigio+poll: 2124.00
  
  c1000-4k-k: (1000 concurrent request, 4k filesize, keepalive)
  poll      : 5882.35
  sigio+poll: 1239.46
  
  Very strange for now. 
  
09.06.2003 23:59
- code-cleanup
  
  the event-handling code has been rewritten to handle single events better
  as they are expected from sig-io.
  
  the fallback-mode of sig-io is broken now, but the normal poll() mode got
  a 10% increasement in speed. This means the we are back the speed level of 
  20030308-0155 are as fast as zeus again. 
  
  Especially under higher load the current lighttpd performes better.
  
09.06.2003 11:51
- sig-io benchmark

                    20030609-1151      20030608-2110       20030308-0155                    
-c 10                  sigio       select()        poll()         poll()
4k                :  7870.92        7937.77       8035.36        9443.76
4k (keep-alive)   : 14098.41       14590.02      14275.52       17985.61
100k              :  3366.32        3382.03       3261.15        3722.32
100k (keep-alive) :  5544.77        5576.00       5573.20        5975.86
-c 100
4k                :  6144.77        5821.40       5714.29        6724.95
4k (keep-alive)   :  9097.53        9213.19       8979.08       10833.06
100k              :  2549.33        2495.94       2318.95        2607.36
100k (keep-alive) :  4267.67        4283.94       4094.17        4314.06


For -c 100 4k and 100k sig-io gives a small increasment.  

09.06.2003 01:00 
- sig-io

  writing large files works now as expected. After removing the limit for
  the chunks of sendfile the write-buffer-is-empty-again signal is
  generated. that was missing.
  
  321 of 10000 connections still have the wrong length. After that is fixed
  it is time to start some benchmarks again.

08.06.2003 21:10
- sig-io

  first attempts in getting SIGIO support running which were not very
  successfull yet. 
  
- poll()/select() benchmark

                        20030608-2110       20030525-1623  20030308-0155                    
-c 10               select()        poll()         poll()         poll()
4k                :  7937.77       8035.36        8166.60        9443.76
4k (keep-alive)   : 14590.02      14275.52       14781.97       17985.61
100k              :  3382.03       3261.15        3176.42        3722.32
100k (keep-alive) :  5576.00       5573.20        5809.56        5975.86
-c 100
4k                :  5821.40       5714.29        5669.26        6724.95
4k (keep-alive)   :  9213.19       8979.08        8418.22       10833.06
100k              :  2495.94       2318.95        2314.28        2607.36
100k (keep-alive) :  4283.94       4094.17        4456.92        4314.06


  as the overall processing cycle has been rearranged the overall figures
  changed in minor ranges. c100-4k-k increased, *-100k-k decreased.
  
  At least it still works.

08.06.2003 12:45
- select()/poll()

  implementate an abstration layer for fd-events (like eevry other webserver).
  currently we support poll() and select().
  
  This should bring us support for Mac OS X and propably Windows.

04.06.2003 18:35
- configure

  lighttpd can now be build without ssl-support even if openssl is installed

- protability

  - on IRIX IPv6 is supported now out of the box
  - for FreeBSD some missing haeders have been added

04.06.2003 14:34
- pipelining
  
  adding support for pipeling introduces a problem if the request-header
  was broken. this has been fixed now.
  
- unneccesary slashes

  when building pathes from different portions of a string (e.g. docroot +
  virt-server-docroot + request-uri) slashes where added for security and
  simplicity. This resulted in up to 5 adjacent slashes which caused no harm
  but looked strange. (fixed)

04.06.2003 09:57
- start/stop messages

  the error-log contains the start and end-times of the lighttpd process,
  now.
  
- configfile

  the config-file parser has been relaxed to accepts tabs instead of spaces.
  
- better error-handling

  fixed a <a 
  href="http://bugs.php.net/?id=24009">bug in the FastCGI-SAPI of PHP</a>
  
  if the fastcgi process dies or closes the connection unexpectedly we
  return 500 now instead of closing the connection to the client.
  
- Location

  the CGI/1.1-rev-03 specification requires us to send Status 302 if a
  Location-header is sent by the client and a Status-header is missing.
  
- PATH_TRANSLATED

  if PHP is compiled without --discard-path PATH_TRANSLATED has to be
  provided.

27.05.2003 15:54
- directory listings

  if a directory is requested and the directory doesn't contain a index-file
  a directory-listing can be displayed. You have to enable directory-listings 
  in the config-file (directory-listings on)

- url-decoding

  up to know urls where not decoded at all (%26 -> . and so on). This has
  been added. Unicode isn't supported as we use 8-bit chars internally.

26.05.2003 00:44
- pipelining

  as Sascha required pipelining for his benchmarking tool it has been
  implemented. 
  
  pipelining allows sending a bunch of requests at once without waiting for
  the actual responses. This reduces the network-overhead and the
  round-trip-time.
  
- non-free()d memory
  
  dmalloc helped to close some non-free()d memory. For the normal operation
  this isn't important as only memory chunks which had to be free()d at the
  end of the live-time of the lighttpd-process were not de-allocated.
  
- partly-initialized variables

  lighttpd wasn't initializing the main-structure which resulted in strange
  behaviour in rare circumstances.
  

25.05.2003 16:23
- benchmarks

  after removing some useless internal copies we are more or less at the old
  speed levels.
  
  after adding virtual-hosts 10% of the performance were lost. Using less
  memcpy() operations might add several other boosts.
  
  I've just checked how lighttpd compares to Zeus.
  
                    lighttpd (current)       (old)
-c 10                 20030525-1623  20030308-0155     Zeus 4_2
4k                :         8166.60        9443.76      7278.55
4k (keep-alive)   :        14781.97       17985.61     16496.21
100k              :         3176.42        3722.32      3156.37
100k (keep-alive) :         5809.56        5975.86      5460.30
-c 100
4k                :         5669.26        6724.95      5134.26
4k (keep-alive)   :         8418.22       10833.06      8010.25
100k              :         2314.28        2607.36      2688.32
100k (keep-alive) :         4456.92        4314.06      4240.70

23.05.2003 14:38
- cgi-variables
  
  HTTP_HOST was missing for the cgi-module while the fcgi-module passed it
  through to the handler. Fixed that.
  
- fcgi-errors
  
  the connection to the fcgi was dropped and poll() reported an error, the
  error wasn't reported to the client the right way. 
  
22.05.2003 23:02
- authorization

  the first password-storage has been added:
  
  [auth]
  backend plan
  plain-userfile &lt;filename&gt;
  
  require   /download/ user=jan|user=anom
  http-auth /download/ "download archiv" digest
  
  groups are prepared but not implemented. basic and digest are working fine.

20.05.2003 17:53
- authentification
  
  The auth-methods from RFC 2617 have been added. 
  - auth basic
  - auth digest
  
  The only source for accounts is currently only the config-file.
  
  auth-digest needs the plain-text passwort. Are there any source which
  provide a plain-text password ?

12.05.2003 14:33
- virtual hosts
  
  added very basic virtual-host support
  
  virtual-server-root /home/weigon/projects/lighttpd/servers/
  virtual-server-default-host grisu.home.kneschke.de:1025
  virtual-server-docroot /pages/
  
  docroot is 
  
  - if http-host exists
    &lt;virtual-server-root&gt; + &lt;http-host&gt; + &lt;virtual-server-docroot&gt;
  
  - otherwise
    &lt;virtual-server-root&gt; + &lt;virtual-server-default-host&gt; + 
    &lt;virtual-server-docroot&gt;
    
  - if even virtual-server-default-host does not exist, 500 is sent
   

12.05.2003 13:02
- code cleanup

  After two month of development it was time clean-up the internal
  structures. It looks like every went fine as lighttpd works es expected
  like before.
  
- deflate
  the on-the-fly compression has been verified to work fine with opera, 
  konqui, mozilla and the IE.

12.05.2003 02:10
- on-the-fly compression: deflate 
 
  Why the hell are the defining a "deflate" encoding in the form of
  
  _deflate_ The "zlib" format defined in RFC 1950 [31] in combination 
  with the "deflate" compression mechanism described in RFC 1951 [29]. 
  (RFC 2616)
  
  and noone implements it that way ? Konqui and Mozilla expect a plain
  deflate() package without the zlib-header. 
  
  Konqui is using "inflate2(..., -MAX_WBITS); " which is noted in the zlib
  source as 
  
  /* handle undocumented nowrap option (no zlib header or check) */
  
  Funny. Very, very funny.
  
  
  Anyway. We have mimetype-depended compression support now.
  
11.05.2003 21:56
- logging
  re-arranged the logfile structure to write CLF + useragent + referrer.

11.05.2003 10:23
- POST file-upload
  added the missing functionality to send more than a single packet to the
  FCGI-Server (or Client ? ... the PHP). 
  
    This gives us the file-upload thing for eg. PHP and large user-forms
  (&gt;16kb).

05.05.2003 15:21
- PATH_INFO
  
  added support for PATH_INFO. PHP is a little strange and doesn't trust the
  passed PATH_INFO setting. Works fine now.
  
30.04.2003 15:25
- bug-fixing day

  While testing the FastCGI interface with the MSIE Björn Schotte discovered
  that sometimes the output repeats itself from the start in an endless loop. 
    This bug has been fixed.
    
  The read-write-fallback for ancient systems seeked the wrong FDs.
  
  The FastCGI handler is now separting the HTTP-Header from the
  response-body what results in a cleaner interface. The "header too long
  for caching" message is gone now.
  
28.04.2003 18:18
- chunked transfer-encoding

  The FastCGI part is now using Chunked-Transfer-Encoding if HTTP/1.1 is
  used and no content-length is specified.

27.04.2003 23:10
- chunked transfer-encoding
  added "Transfer-Encoding: chunked" which is currently used in the web-chat
  for the endless stream. Perhaps it helps some browsers. 
  
    The FastCGI interface will get a the chunked-support too, as it will
  enable keep-alive even if no content-length is returned from the FastCGI
  process. We know the size of the chunks and will report it to the browser.

16.04.2003 12:02
- gigE deatchmatch

  sascha compared the current lighttpd to his premium thttpd in his
  gigabit-Ethernet-Network. 

  <a
href="http://schumann.cx/gbit_deathmatch.txt">http://schumann.cx/gbit_deathmatch.txt</a>

  small comment:
  lighttpd provides the same performance (req/s and thoughput), but uses more
  CPU-Time. 

10.04.2003 17:22
- works on IRIX

  Jörg Behrens provided me login to his SGI Origin and after fixing two small
  typos it worked fine on IRIX. (#if define HAVE... was missing a 'd' and
  getopt returns a 'int' and not a 'char')
  
  IPv6 support is currently disabled for IRIX a gethostbyname2() isn't
  available.

10.04.2003 15:56
- another bug-fixing day
  The upper limit of open connections was enforced and a caused a seg-fault.
  The current limit is set to 4096 parallel connections.
  
  As sascha benchmarked lighttpd and his premium thttpd I tried to reproduce
  his reported results and had to fix 2 flaws in the async-io handling of
  httpd_load which was used for the testing.
  
  If sascha starts another benchmark session I'll put a link to it here.

09.04.2003 00:08
- bug-fixing time
  Date: and Last-Modified: where sending a timezone != GMT what was invalid.
  The timestamp itself was correct, just the timezone use the wrong
  characters.
  
  the fcgi-code had an buffer-overflow for larger POST-Requests.
  
  The fcgi-code still has problems with POST-Request larger than 16kb as the
  the write buffer is full. Currently we don't handle this case except from
  reporting it in the error-log.

02.04.2003 01:17
- cgi is back

  The CGI Interface wasn't tested for a longer time. It don't really
  survived the introduction of the config-file handling and the internal
  changes that were part of it.
  
  A small test with
  
#! /usr/bin/perl
print "Content-Type: text/html\r\n\r\n";
print time()."\n";
0;

  produced 219 req/s. 
  
  Calling PHP via the CGI interface results in 100 req/s. Same script, same
  parameters for 'ab' and same PHP result in 1400 req/s if we use the
  FastCGI interface. 
  
  <b>Don't forget</b>: these benchmarks only represent figures for scenarios which
  are not very realistic. They are just usefull for comparisions of the
  internals. We don't want to benchmark applications.

01.04.2003 23:04
- new benchmarks
  
  This time we wanted to see if  we can get the fastcgi-Interface a little bit
  faster. We use this small script for the testing the interface. 

&lt;?php

ob_start(/*"ob_gzhandler"*/);
print "12345&lt;br /&gt;\n";
header("Content-Length: ".ob_get_length());
ob_end_flush();

?&gt;

  It generate a small network load and is the best case for benchmarking the
  overhead of the call to the fastcgi-php.

  Using the chunk-API instead auf tmp-files increase the req/s vom 1200req/s
  to 1600 req/s and the IO-load went down as expected. Waiting for the
  filesystem and creating 1200 files per second required some time. The
  CGI-Interface is still using tempfiles.

01.04.2003 19:28 (no april fools joke)
- added SSL support
  I took -lssl and -lcrypto and added SSLv2/SSLv3/TLS support to lighttpd. 
  
  After some reading I realisized that libcrypto contained some of my code.
  They have a similar buffer-struct with similar functions and they use the
  same MD5-code from the RFC. :)

  Adding basic SSL-support was quite esay: replacing all write/read-calls by
  SSL_write/read, initializing the ssl-context the right way and telling
  openssl where to get the data from (SSL_set_fd). It fits really well into
  lighttpd. 
  
- sidenote
  sooner or later the con->filename handler will vanish in favour of the
  direct interface to the chunk-API which will simplifiy the design a little
  bit.

31.03.2003 20:50
- added a web-chat module
  1400 lines of C-code are neccesary to add a web-chat to lighttpd. 
  
  Features:
  - bb-code for text-layouting
  - auto-highlight for URLs and Email-adresses
  - unlimited number of channels 
  - max. 32.000 users per channel
  - fast as it is directly integrated into the web-server
  - easy to install (as easy as lighttpd)
  - IRC-like (/msg, /kick, /me, ...)
  - works with MS IE, Mozilla, Konqueror, ...
  - uses as little JavaScript as possible to stay compatible with all browsers
  - flood-protection (2 Levels: ignore and kick)
  - uses CSS for customized look-and-feel
  
25.03.2003 00:36
- finished the config-file support
  now we have config-sections 
  
  [fastcgi]
  fastcgi .php 192.168.2.76 1025
  
  The only this missing is -HUP handling to re-read the config. But that
  will follow when I'm up again.

20.03.2003 01:04
- adding config-file support
  the most boring part of the writing programs after writing documentation.
  The format is quite simple and good enough for lighttpd.

19.03.2003 03:05
- more on sendfile support
  added support for freebsd's version of sendfile(). 
  
  Linux:
  ssize_t sendfile(int out_fd, int in_fd, off_t *offset, size_t count);
  
  FreeBSD:
  int     sendfile(int fd, int s, off_t offset, size_t nbytes,
                   struct sf_hdtr *hdtr, off_t *sbytes, int flags);
		   
  the first 2 params are swap, the next 2 are the same and the last 3 are
  set to NULL or 0.
  
  Solaris 9 is providing a direct interface to the chunk-API with the
  sendfilev() system call:
  
  ssize_t sendfilev(int fildes, 
                    const struct sendfilevec *vec, int sfvcnt, size_t *xferred);
		    
  recovering from a failure is a little bit more complex, but it should be
  fast. I just need a system to test it. Anyone ?

18.03.2003 17:32
- in the news
  what a surprise: lighttpd is announced in entwickler.com. 
  
  <a href="http://www.entwickler.com/itr/news/psecom,id,9483,nodeid,82.html">http://www.entwickler.com/itr/news/psecom,id,9483,nodeid,82.html</a>
  
  this was not planned.
  
  
- implemented the chunked-API
  rather writing the content of multi-range'd requests to a temp-file we
  just register the parts in a chunk-queue. 
  
  chunk 1 [mem]  - part-header
  chunk 2 [file] - source-file (offset, len)
  chunk 3 [mem]  - part-header
  chunk 4 [file] - source-file (offset, len)
  chunk 5 [mem]  - part-footer
  
  If everything is prepared, the content-length is calculated and the
  http-header is generated and prepended to the chunk-queue.
  
  the handle_write() function which handles the write-process just sends the
  chunks to the network without only further modifications.
  
  the chunk-api even simplifies the
  'my-fastcgi-process-needs-some-time-to-create-the-response-
  and-sends-the-data-in-chunks' case. Just add the chunk to the queue if it
  is received.

13.03.2003 10:49
- another set of real-life benchmarks
  
  the chairman was benchmarked a little bit. Chairman is full-flegded WCMS.
  As every CMS it needs some time to generate pages. To speed the page
  generating the static-parts of the page can be cached internally.
  
                     without caching   with caching
apache + mod_php   :            2.50          10.64 req/s
lighttpd + fcgi-php:            2.50          22.74 req/s

  Looks like lighttpd is the way to go :)

  Please, don't compare these numbers with the other benchmarks:
  We used a different test-machine which is a little bit under-powered
  for this test-case.

12.03.2003 13:43
- another large application works with lighttpd

  <a
href="http://www.thinkphp.de/content/content2.php?CatID=44&amp;NewsID=95">Chairman</a> from <a href="http://www.thinkphp.de/">thinkphp</a> has been verified to work with lighttpd. 
  
  Three things are worth to note:
  
  1. ALWAYS use log_error in the php.ini if you use FastCGI 
     otherwise it will put the errormessages directly into fastcgi-socket
     without any FastCGI Header. This will result in strange errors.
     (its a PHP bug)
  2. DOCUMENT_ROOT has been added to the environment variables
  3. a small bug for sending larger output from a fastcgi client has been
     fixed.

11.03.2003 11:52
- added two neccesary features
  - redirect _dir_ to _dir_/
  - append index-file to _dir_/ if they exist

11.03.2003 00:13
- another target
  after adding some headers lighttpd compiles without any warnings 
  under cygwin on Windows.

  A native windows port will take some time as I have to figure out the
  changes on the winsock.h to the unix headers.

10.03.2003 11:52
- added Solaris 8 and 9
  lighttpd has been confirmed to compile and work on 
  
  - linux 
  - FreeBSD, NetBSD
  - Solaris 8, 9
  
  Perhaps I can get lcc to compile it on windows.

10.03.2003 01:30
- another platform was confirmed
  lighttpd works on NetBSD
  
- another webserver benchmark
  mathopd (http://www.mathopd.org/)
  
                    Mathopd/1.4
-c 10
4k                :  6329.11 [#/sec]
4k (keep-alive)   : 10235.41 [#/sec]
100k              :  1168.50 [#/sec]
100k (keep-alive) :   268.82 [#/sec] (99% idle)
-c 100
4k                :    ---- (connections dropped)
4k (keep-alive)   :    ----
100k              :    ---- 
100k (keep-alive) :    ----

Very good values for small files, but the rest ?

10.03.2003 00:06
- added more write-handlers
  1. sendfile (linux only)
  2. mmap + write
  3. read + write
  
  This means that lighttpd runs on some more systems. It has been verified
  to compile and work on linux 2.4.x and FreeBSD.
  
  
-c 100
         sendfile  mmap     read
4k       6476.68   5698.01  5363.08 [#/sec]
100k     2312.35    841.54   783.09 [#/sec]

  The mmap() numbers could be better with a fd+mmap-cache. The zero-copy thing
  is good for our performance.
  
- tested another small httpd - BOA
  just to get a better view about the performance of lighttpd i've tested
  another httpd: Boa/0.94.14rc16 (http://www.boa.org/)
  
                    Boa/0.94.14rc16
-c 10
4k                :         5659.63 [#/sec]
4k (keep-alive)   :          250.23 [#/sec]
100k              :         1104.29 [#/sec]
100k (keep-alive) :         1363.14 [#/sec]
-c 100
4k                :         4319.65 [#/sec]
4k (keep-alive)   :         2490.66 [#/sec]
100k              :          815.93 [#/sec]
100k (keep-alive) :         1007.05 [#/sec]

  The results are a little bit strange. Keep-Alive for small files seems to be
  broken.

  It looks like lighttpd has enough power for now. Time the port and add more
  features.

09.03.2003 13:26
- load-balancing works great

  I used the framework from http://framework.netuse.de/ as a 
  real-life example again to test the load-balancer.

  setup:
  - grisu
    - AMD athlon XP 2000+
    - runs lighttpd + ab + a 'nice -15'ed FastCGI-PHP
    - generates 153 req/s alone
    
  - laptop
    - Intel PIII 850
    - runs a FastCGI-PHP
    - generates 88 req/s
   
   using the internal load-balancer of lighttpd which balances the 
   php-requests over grisu and laptop generate:
     221 req/s
     
   An apache with mod_php running on grisu gives 117.04 req/s only.

09.03.2003 12:46
- building the connect connection to the fcgi-php is not non-blocking
  socket() -> connect() -> fcntl(non-blocking) resulted in some problems as
  the connect() call blocked sometimes for 1 seconds. 
  
  socket() -> fcntl(non-blocking) -> connect() solves this problem, but
  addes more overhead. The first connect-attempt seems always to 
  return EINPROGRESS.
  
08.03.2003 15:06
- the first 'real-life' PHP test showed 2 bugs in the POST handling. 
  1. the Content-Type header was not forwarded via fastcgi
  2. the internal content_length handler wasn't reset after the request
  
  now lighttpd + php work with
  
  http://framework.netuse.de/
  
  the basic application gives us 145 req/s 

08.03.2003 11:06
- use diet to 'test' your code
  diet gives some use full warnings which should be followed. I took the
  chance and removed the last few fprintf() and sprintf() from the code.
  now, we don't need stdio.h anymore.
  
    a staticly linked, stripped lighttpd is 42884 bytes large. 

08.03.2003 01:55
- buffer_strcat() uses strlen() to get the length of the 'to-be-catted-string'
  if the string is constant or has a known length you can pass that function
  which gives use buffer_strcat_len() which passes the string length as a
  parameter.
  
- using a ramdisk as the base for the tempfiles generated mkstemp() is a
  very cood idea 
  it reduces the io-load on the system and gives as more cpu-time for
  load-balancing the php-requests.
  
- cache the output of strftime(), gmtime() and localtime
  we generate more then 10.000 req/s which results in using the same
  timestamp over and over again. It is sufficient to generate the timestamp
  once a second and give us a bunch of CPU-cycles for sending files.

  the same applies for other timestamps like Last-modified which sends a
  string version of st.st_mtime. Cache it.

- don't try to overoptimize for code for the sake of clean code
  the range support require some hack in the first versions like setting the
  write_offset to the start of the range and keeping the rest of the 
  "code 200" send code as usual. Only a few lines added this first range 
  feature. fast, but a hack. It made things more complicated then neccesary 
  to add multi-range support in this scenario.
  
  removing the hack doing small clean preprocessing helps to clean up the
  whole 'write a chunk on the wire' code. At the end we use less code and
  have a cleaner design. 
  
  Sascha proposed a chunked layer which just takes the chunks (http-header, 
  part-header, part-message, ... and the last boundary) and passes them to
  the write-to-the-wire-code. This is far more elegant and will perhaps same
  us from other problems, too. Currently I think that it is not necessary.
  First we have to fix some protability issues.
  
Ok, today benches:

                       today      last
-c 10
4k                :  9443.76   7739.94    + 22%
4k (keep-alive)   : 17985.61  13885.03    + 29%
100k              :  3722.32   3349.97    + 11%
100k (keep-alive) :  5975.86   4965.49    + 20%
-c 100
4k                :  6724.95   5918.56    + 13%
4k (keep-alive)   : 10833.06   8405.48    + 28%
100k              :  2607.36   2393.60    +  9%
100k (keep-alive) :  4314.06   4035.35    +  7%

Top Transfer Rate:

    86365.77 [Kbytes/sec] received
    
Too much for a GigE-link ?
    

so far:

- use state-engines

  a non-forking webserver like described in 
  
  http://www.kegel.com/c10k.html

- don't use fprintf() for logging. 
  writing one line to log file takes more time that sending responsing the a
  HTTP-request
  
- take care of your memory

  typedef struct {
          char *ptr;
          size_t used;
          size_t size;
  } buffer;
  
  buffer* buffer_init();
  void buffer_free(buffer *b);
  int buffer_prepare_copy(buffer *b, size_t size);
  int buffer_prepare_append(buffer *b, size_t size);
  int buffer_strcpy(buffer *b, const char *s);
  int buffer_strcpy_len(buffer *b, const char *s, int s_len);
  int buffer_strcat(buffer *b, const char *s);
  int buffer_strcat_len(buffer *b, const char *s, int s_len);
  
  buffer_init() is only called once per buffer. If you don't need the
  buffer, set 'used' to zero and reused it afterward. 
    buffer_strcpy() + buffer_strcat() check if the 'used' + the new strlen()
  fit in to the 'size' of the buffer. If not the realloc() the buffer.
    buffer_strcat() uses memcpy(ptr + used - 1, s, s_len + 1); which should
  be faster than the original strcat().
  
  Using those buffers keep the memory usage at 2Mb. malloc() and free() are
  only called at the beginnig of the programm and at the end.
  
- don't used sprintf() to convert a integer into a string as like
  sprintf(buf, "%d", l);
  
  write your own ltostr function. sprintf() is to general for the case and
  is slow.


Speed:
------

Let's assume that <a
href="http://www.acme.com/software/thttpd/">thttpd</a> is (one of) the
fastest webservers out there. 

all httpds were started with:

$ ./thttpd -p 1026 -D \
 -d /home/weigon/projects/localizer/src/lighttpd/docroot/ \
 -l thttpd.access.log
 
(lighttpd uses the same parameters).

We used ApacheBench for testing the RPS (requests per second).

$ /usr/sbin/ab -dS -c 10 -n 100000 http://192.168.2.10:80/dummy.out

                  lighttpd  thttpd/2.21b+php  thttpd/2.20c  thttpd/2.23b1
(concurrency 10)
4k             :   7739.94           6040.84       5078.20        5888.24 [#/sec]
4k (keep-alive):  13885.03          10349.82       5034.49        5853.09 [#/sec]
100k           :   3349.97           1176.29[1]    1188.74        1198.29 [#/sec]
100k (keep-a.) :   4965.49           2513.38[2]    1100.65        1130.51 [#/sec]
(concurrency 100)
4k             :   5918.56           4907.01       4987.53        4886.87 [#/sec]
4k (keep-alive):   8405.48           6379.99       4938.76        4816.26 [#/sec]
100k           :   2393.60            972.73        958.27         961.09 [#/sec]
100k (keep-a.) :   4035.35            893.51[3]     970.21         955.05 [#/sec]

thttpd/2.21b+php has been patched with the keep-alive + php patches from PHP4
sapi/thttpd/thttpd_patch. 

[1] ab reported:
Failed requests:        1
   (Connect: 0, Length: 1, Exceptions: 0)
[2] ab reported:
Failed requests:        5
   (Connect: 0, Length: 5, Exceptions: 0)
[3] ab reported:
Failed requests:        24
   (Connect: 0, Length: 24, Exceptions: 0)

Tunning the thttpd:
-------------------
- disable symlink checking (chroot() or -nos)
- log to /dev/shm/logfile, a ramdisk or disable logging


$ ./thttpd -p 1026 -D \
 -d /home/weigon/projects/localizer/src/lighttpd/docroot/ \
 -l /dev/null

