Problem with HEAD requests via mod_cache and mod_proxy

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Hey,
I am using apache 2.2.3 with mod_proxy and mod_cache in reverse proxy mode. I am seeing a problem with the response to HEAD requests in this setup.

If you send a HEAD request for content that is cached but expired, mod_cache correctly sends a conditional request to the origin but that "304 Not Modified" response from the internal server isn't being translated to a 200 response before passing it to the user. The response to the end user is a 304 and the previously cached file on disk is purged from the cache.

Can someone else using mod_proxy and mod_cache verify this is the case. I am running a stock apache version on RedHat AS4.

thanks,
   Sridhar



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