Apache 1.3.23 was released on 24th January 2002 and is
now the latest version of the Apache server. The previous
release was 1.3.22, released on the 12th October 2001.
what was new in Apache 1.3.22.
Apache 1.3.23 is available in source form for compiling on
Unix or Windows, for download from the main Apache site
or from any mirror
This is a bug fix and minor upgrade release,
with a few new
features. Users should upgrade if they will be affected
particular bugs mentioned below, or would like to use any of
the new features.
Due to security issues, any sites using versions prior to
Apache 1.3.22 should upgrade to at least Apache 1.3.22.
about security issues that affect Apache 1.3.
The main new features in 1.3.23 (compared to 1.3.22) are:
- HTTP/1.1 support has been added to mod_proxy after
being backported from the Apache 2.0 updates
last April. The updates include support for
Cache-Control, content negotiation using Vary,
persistent connection handling, and much more.
- A new directive, FileETag allows the
format of the ETag to be controlled via runtime directives.
more about this new feature.
- Addition of a 'filter callback' function to enable modules to
intercept the output byte stream for dynamic page caching
The following bugs were found in Apache 1.3.22 and have been
fixed in Apache 1.3.23:
- Fix incorrect Content-Length header in 416, "Range Not
- Revert mod_negotiation handling of
path_info and query_args
to the 1.3.20 behavior. PR#8628, PR#8582, PR#8538
- Prevent an Apache module from being loaded or added twice due
to duplicate LoadModule or
- Add run-time validation of the Group directive,
to catch invalid but syntactically correct values.
The following bugs relate to specific platforms:
- Versions of FreeBSD from August 2000 include a feature
called "accept filters" which delay the return from
accept() until a condition has been met. Apache will now use the
"httpready" accept filter rather than "dataready" on
FreeBSD after 4.1.1-RELEASE where it works correctly.
More details of
accept filters are available.
- Some fixes for Netware including link problems with
mod_vhost_alias, file locking updates
to get mod_auth_dbm to work, and a problem when
accessing an empty directory which
has option indexes specified producing an access
- On HPUX 11, an ENOBUFS, No buffer space available
error occurs when an accept() cannot complete. This error is now
ignored so that child processes don't get incorrectly terminated
- Win32 platforms would incorrectly always return forbidden in
response to a OPTIONS * request
- Unixware 7.0 and later did not have a default locking
mechanism defined. This bug was introduced in apache 1.3.4
- A number of fixes for Cygwin including a better default
mutex as well as better proxy and DBM support
- A bug on Win32 could cause Apache to stop responding to
requests for a period of time if the MaxRequestsPerChild
directive was set to anything other than 0.
MaxRequestsPerChild of 0 is the recommended setting
- Win32 will now output an error message if the server hits the
ThreadsPerChild limit. This is useful for
administrators to detect when their server is running out of threads to
The release of 1.3.23 generated large amounts of traffic this week
as some last minute fixes were made, and the decision was made to
revert some changes which would have broken binary module
compatibility on Windows. Since binary compatibility was maintained
(on all platforms), any modules compiled against any 1.3 releases
since 1.3.5 should continue to work with 1.3.23.
In other news, a proposal was made to tag the 2.0 tree for another
new release (2.0.31), but several serious bugs remain to be fixed.
Justin Erenkrantz committed large changes to clean up the filter API.
In this section we highlight some of the articles on the web that are of
interest to Apache users.
IBM DB2 Developer Domain provides a
(free registration required) about Web application development using
various database programming interfaces with DB2 for Linux and
Apache. It uses Linux (kernel 2.4), Apache 1.3.19, PHP 4.0.4p1,
Perl 5.x.x, Python 1.5, and DB2 Enterprise Edition for Linux V7.1.
The steps on how to install the Apache Web Server and PHP are
based on an article entitled
by Glen Johnson.
"Building A PHP-Based Mail Client (part 3)"
wraps up this case study by enhancing the mail client to enable users
to compose, forward or reply to a message. Readers are reminded that
this application is just a prototype and is not meant for a production
on how Apache saved a company USD50,000 during a time when
every organisation has to tighten its purse strings. There are some
other tips too on being resourceful in lean times.