By popular demand, the beginnings of an explanation of how the request
  phase runs in 2.0 (compared with 1.3.)


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  Header abuse.


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  Someone isn't coding enough html lately (me)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91109 13f79535-47bb-0310-9956-ffa450edef68

  Move API.html over to manual/developer, begin some cleanup.

  Could a DoxyGen'er please update the guidlines in documenting.html?


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91108 13f79535-47bb-0310-9956-ffa450edef68

(apachectl graceful was broken.)

The best way to do this is to change configure to internally represent
the signal without the SIG prefix and prepend SIG before substitution
(and export a version without the SIG prefix for apachectl).

This highlights why we want to move apachectl's core functionality into
httpd.


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  AFAICT, we have never created server configs of _all_ modules for _all_
  contexts, only when they come up (e.g., a directive of that particular
  module is provided) with the except that vhost containers complete the
  initialization of all modules.  I haven't stepped this, but it appears
  to be correct.

  This patch assures we can merge two incomplete directory sections
  together.  They will (obviously) need to be merged with a LHS default,
  e.g. a vhost's or main server's default dir config.  That's fine, this
  just allows either the LHS or RHS value to be null, and for merging to
  still succeed.

Reported by:  Sander Striker <striker@apache.org>
Additional Analysis:  Doug MacEachern


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  Additional enlightenment for users trying to understand win32 .bat scripts.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91096 13f79535-47bb-0310-9956-ffa450edef68

caller -- ap_process_request_internal() -- catches that and returns
OK to its caller -- ap_process_request().  But ap_process_request(),
seeing OK, tries to run a handler.  It needs to skip that if the
request was completed in ap_process_request_internal().

Reviewed by:	William A. Rowe, Jr.


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parameter. Pass NULL because we aren't interested in the value.


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the error pages returned from the proxied server and replace them with the standard
server error handling on the main server.

Reviewed by:	Graham, Chuck


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91092 13f79535-47bb-0310-9956-ffa450edef68

Linux 2.0/glibc 2.0 which doesn't allow SIGUSR1 to be used by programs.

Feel free to change the wording.  I don't care.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91091 13f79535-47bb-0310-9956-ffa450edef68

  Accomodate the new server/util_time.c module on win32


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very least we should close the socket and write a log message (mostly
to aid debugging, as this is a showstopper problem)

this is no fix; there is a design issue to consider; hopefully this
will


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I have for the moment.  I've done three things:
1. Emphasize that auth does not need to be in .htaccess.
2. Add detailed discussion of each of the auth directives (does this
belong here?)
3. Remove the AuthGroupFile /dev/null which shouldn't be necessary.


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- Add a sumary, index, ext
- put the most important stuff at the top
- remove some obsolete stuff


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91086 13f79535-47bb-0310-9956-ffa450edef68

expensive operations in the httpd.  This patch attempts to reduce the
overhead by caching the result for 15 seconds.

Submitted by:	Brian Pane <bpane@pacbell.net>
Reviewed by:	Cliff Woolley, Ryan Bloom, Dean Gaudet, Justin Erenkrantz


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casts would go away before this committed, but alas I didn't say anything.
:-)  This gets rid of them and a few others just like them that I also
found in worker.c.


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(Clean up comment, really...)


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since we returned Last-Modified/ETag headers, we said that it was possibly
cacheable.  Wrong.

See RFC 2616 13.3.4 for more details (these are SHOULD/MAY clauses, so I
think we can discard them when we are dealing with dynamic data).

(Justin cleaned up the comment to cite RFC 2616.)

Submitted by:	Ian Holsman <ianh@cnet.com>
Reviewed by:	Justin Erenkrantz, Aaron Bannert, Brian Pane


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state of the worker threads was not being reported back to the
scoreboard, and eventually all the threads running in the children
would be reported as being in the "C -- closing connection" state.
This would wreak havoc on the idle_server_maintenance() routine. Since
these threads would never be counted as idle, the server would
spawn children as fast as possible.

Submitted by:	Aaron Bannert <aaron@clove.org>
Reviewed by:	Justin Erenkrantz


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strings to numbers in places where the methods are known at compile
time.

(Justin fixed the va_end() call to be correct.)

Submitted by:	Brian Pane <bpane@pacbell.net>
Reviewed by:	Justin Erenkrantz


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91078 13f79535-47bb-0310-9956-ffa450edef68

improve cache-hit performance under some conditions.

Submitted by:   Aaron Bannert <aaron@clove.org>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91077 13f79535-47bb-0310-9956-ffa450edef68

support it.  This defines a symbol called AP_SIG_GRACEFUL in
ap_config_auto.h which will have the appropriate signal value.  All
direct references to SIGWINCH have been replaced with AP_SIG_GRACEFUL.

On Linux 2.0, use SIGWINCH instead since SIGUSR1 is used by glibc
2.0's user-space threading library to control threads.  All later
versions of Linux/glibc don't have this problem.  (Not to mention the
security holes in older Linux versions which make it unsuitable for
use as a web server.)  If your platform doesn't have SIGUSR1, use the
appropriate mojo in configure to define what your graceful restart
signal should be.

In theory, a configure switch could be added to allow the admin to
specify the appropriate signal that should be used.  This is left
as an exercise to the reader for now.

The docs need to be updated.  Since the signal is now configurable,
just saying SIGUSR1 for graceful restart isn't completely true.  Also,
the apachectl functionality needs to be moved into httpd - this is
what Win32 does and it makes us consistent across platforms.

Roy issued a veto against use of SIGWINCH by default, so this should
resolve that veto.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91076 13f79535-47bb-0310-9956-ffa450edef68

pools.  This incurs less overhead than shuffling the pools
around so that they can be re-used.  Remove one of the
queue's condition variables.  We just redefined the API to
state that you can't try to add more stuff than you allocated
segments for.

Submitted by:	  Aaron Bannert <aaron@clove.org>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91075 13f79535-47bb-0310-9956-ffa450edef68

Submitted by:	 Cody Sherr <csherr@covalent.net>


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header file, so that people can use it.


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the pool (now), forget the stack-based buffer altogether.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91067 13f79535-47bb-0310-9956-ffa450edef68

providers. The old API was really based on how the FS stored properties, but
sucked for other types of providers (SQL databases, Subversion, etc). This
new code is overall much cleaner as it moves from a DBM style API to one
tuned for actual mod_dav operation; it also more flexible/clearer for future
improvements (e.g. dropping props directly to the wire rather than buffering
in memory).

This new API allows the provider to better define namespace handling during
the output of the values, how values are serialized and stored, the mapping
between elements' namespaces and the internalized namespace storage, a
clearer mechanism for naming properties (dav_prop_name), and an explicit
rollback mechanism to deal with PROPPATCH atomicity.

Updated the FS provider (fs/dbm.c) to the new API, mostly by moving code
from main/props.c. Of course, with the new semantics, some big changes in
the namespace mapping were made.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91065 13f79535-47bb-0310-9956-ffa450edef68

apr_datum_t (the two are equivalent).

Expose some of the DAVFS' internal DBM cover functions and have the locking
code use them directly, rather than thru the vtable. That vtable will be
changing shortly, so this shift is needed.


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mod_cgi.c: In function `include_cmd':
mod_cgi.c:812: warning: passing arg 1 of pointer to function from incompatible
pointer type

Reported by:	Ian's autobuild


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91062 13f79535-47bb-0310-9956-ffa450edef68

Submitted by:	Ian Holsman


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  Here's the declaration for all to share.  Don't expect many to use it.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91059 13f79535-47bb-0310-9956-ffa450edef68

   Remove the Win32 script-processing exception from mod_cgi, and
   roll build_command_line/build_argv_list into a unified, overrideable
   ap_cgi_build_command optional function.

   Eliminates a ton of Win32 cruft from core.c for registry parsing.
   Win32 (through the default handler, and newest changes to the
   apr_proc_create fn) continues to serve .bat/.exe files.  This is in
   preparation for adding modules/arch/win32/mod_win32 for scripts.

   Please review the mod_cgi.c behavior very carefully.


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