httpd-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "William A. Rowe, Jr." <>
Subject Re: ap_run_sub_req problem
Date Fri, 08 Aug 2003 20:43:04 GMT
Aryeh, please take a look at mod_negotiation for an example of where we
look at several subrequests, choose a best-match based on mime headers,
and then promote that subrequest to become the real request.


At 09:22 AM 8/8/2003, Aryeh Katz wrote:
>I was wondering if the following in the filter documentation is a doc bug based 
>on your comments below:
>"The second case for sub-requests is when one sub-request is going to 
>become the real request. This happens whenever a sub-request is created 
>outside of a handler or filter, and NULL is passed as the next filter to the 
>make_sub_request function."
>This seems to imply that it is possible to pass a NULL for the filter, and still 
>have it become the real request (which I assume is done in a method similar 
>to run_sub_req).
>Can you shed some light on this please?
>> The NULL argument for the filter is *ONLY* to be used for testing
>> subrequests that are not actually run to the client.  E.g.
>> mod_autoindex uses the NULL arg to consider what files might be
>> served, and if they are, in fact, actually valid content files, or if
>> they have been protected or otherwise cannot be handled.
>> You must pass the appropriate filter arg in order to pass the response
>> through the filter stack back to the client.
>> Look, instead, at mod_include.c or another module that actually serves
>> the subrequest, for an example of the appropriate way to use this API.
>> Bill
>> At 02:37 PM 8/6/2003, Aryeh Katz wrote:
>> >In certain circumstances, I need to do an internal redirect on the
>> >client's request (without sending back a redirect to the client). I
>> >tried using ap_sub_req_method_uri (specifying NULL for the filter),
>> >and then ap_run_sub_req. I see that the content type of the new
>> >request is correct (in my case, image/gif). However, when the request
>> >is sent to the client, the content type is text/plain. Thus, the
>> >reply to the client doesn't render properly. I suspect I am not
>> >invoking ap_run_sub_req properly. Is there something I should know
>> >about how to invoke run_sub_req? Thanks. Aryeh
>> >
>> >---
>> >Aryeh Katz
>> >Secured-Services Inc.
>Aryeh Katz
>Secured-Services Inc.

View raw message