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List:       apache-modperl
Subject:    Re: mod_perl2, HEAD request and Content-Length
From:       Stas Bekman <stas () stason ! org>
Date:       2004-07-31 8:20:35
Message-ID: 410B5653.1080601 () stason ! org
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Geoffrey Young wrote:
> 
> Boris Zentner wrote:
> 
>>Hi,
>>
>>I have a handler, that serve dynamic pages or static ones. If the handler gets 
>>a HEAD request, it answers with
[...]
> it is desired - you no longer need to set the Content-Length header for
> requests in Apache 2.0.

It's somewhat documented:
http://perl.apache.org/docs/2.0/user/handlers/http.html#Handling_HEAD_Requests

> basically, any C-L header you set in the content-generation phase of the
> request has the potential to be incorrect, since any filter can come along
> and alter the content.  so, what apache does is it runs the new
> content-length filter, which will decide whether a C-L header is required
> and take appropriate steps.  for instance, apache will abandon the C-L
> header if it decides it can use a chunked transfer encoding instead.

Geoff, feel free to improve that section to be more complete. Thanks.

-- 
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