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From Tony Finch <>
Subject Re: [PATCH] filtering and canned error responses
Date Wed, 06 Sep 2000 00:46:38 GMT wrote:
>Well, this is where things start to get a little complicated, because we
>have decided to distinguish between content generators and content
>filters.  All of our generators are implemented as handler functions,
>while filters are obviously implemented as filters.  What are error
>messages?  Obviously, they are generated content, but they can't really be
>implemented as handlers, because we are past the handler phase.  So, this
>leaves us with two options.
>1)  A filter that soaks up input and replaces it with the error page.
>2)  A completely separate function that co-opts the request processing,
>and sets up a new filter stack.

This is called an internal redirect, isn't it? When an error occurs it
causes an internal redirect to an error page URL which either results
in internally generated content from the error document content
handler, or if an ErrorDocument has been configured then you get
another internal redirect to the page on disk.

I.e. make subrequests work and error documents will fall out in the
wash :-)

en oeccget g mtcaa    f.a.n.finch
v spdlkishrhtewe y
eatp o v eiti i d.

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