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Re: How can I add my plug-in between mod_dav and mod_dav_svn

From: Ben Collins-Sussman <sussman_at_collab.net>
Date: 2002-12-20 15:07:17 CET

"Nitin Shukla" <nitinshukla@infotech.stph.net> writes:

> How does apache handle multiple users? Does Apache create multiple instances
> of mod_dav for a each user or keeps only one instance of mod_dav per user.

The Apache server assigns a separate httpd child process to handle
each incoming client connection. Each child process is a clone of the
parent, running its own copy of mod_dav.

"Nitin Shukla" <nitinshukla@infotech.stph.net> writes:

> I am interested in adding my plug-ins between the mod_dav module of Apache
> and the mod_dav_svn module of Subversion. I am particularly interested in
> passing the "request_rec" structure to my application from the mod_dav
> module before it is passed to the mod_dav_svn module of Subversion. Can
> anyone help or give an idea of flow of webdav request from the mod_dav to
> the mod_dav_svn. It would be appreciable if one can give any url or document
> worth reading. Even if one can list the bunch of apis where I would be
> looking for will be appreciable. I am relatively new to the Subversion
> source code.

Nitin: these are all questions about Apache's architecture, not really
about Subversion. You need to either read the Apache documentation,
or buy yourself a book about how to write Apache modules. (I really
like the one from O'Reilly.)

The reason Subversion uses Apache as a server is so that we don't have
to think about any of these issues. Apache automatically manages
child processes, does authentication, ssl, compression, and has a
whole system for writing your own authentication modules. All of this
is tangential to mod_dav, and Subversion's use of mod_dav.

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Received on Fri Dec 20 15:09:55 2002

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