Accessing HTTP response in Apache Rewrite/SetEnvIf (content type, expires headers)

apache-2.2mod-rewrite

Is it possible to access response object data in Apache

SetEnvIf
RewriteCond

… so that one could manipulate headers based on content type and caching output?

From the documentation it seems that this is not possible. Is there any other module which could allow this kind of manipulation (setting environment variables based on response headers)?

Best Answer

mod_rewrite doesn't operate on headers, but you CAN do this with mod_headers, which has an example for this exact situation.

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So I think I figured it out.

It appears that IE caches the AJAX GET data in such a way that it is hard (impossible?) to clear it out. Maybe I had the xml configured as text/xml at some point, but I don't think so. Basically, IE continued to use the cached results for that XML file over the actual server results. That also explains why the HTTP headers looked so odd (no server information for instance). Or it's possible that the cache is always producing text/html (I gave up further tests).

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Wow do I hate Internet Explorer. How many development hours are wasted creating workarounds for it's horrible behavior?

Best Answer

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