Hi everybody,

I'm running a Apache installation using a standard DirectAdmin setup, but I'm having problems with handling of gzipped output.

One of my PHP scripts outputs a .ZIP file (with appropriate headers). By default, the output of this script gets gzipped by mod_deflate. Of course there is no need to gzip a zip file, but decent browsers have no problem handling this. Internet Explorer mangles the file though, unless you set a non standard content type.

So, in order to fix this and disable gzip for this script, I've set up a line in my .htaccess file:

SetEnvIf Request_URI download_file\.php$ no-gzip dont-vary

When I test this using wget (wget --header="Accept-Encoding: gzip,deflate") this works fine. Output from this script does not get gzipped. However, if I add the IE user agent header (User-Agent: Mozilla/4.0 (compatible; MSIE 6.0;.....) the content still gets gzipped.

Strangely, when I replace the above line with 'SetEnv no-gzip', the content does not get gzipped even though I send the IE user agent header. I've traced this back to the stock httpd-deflate.conf which is included in my httpd.conf. It contains the following line:

BrowserMatch \bMSIE !no-gzip !gzip-only-text/html

When I comment this line out, things work as expected... does, for some reason, a BrowserMatch reffered from httpd.conf have precedence over what's in a .htaccess file? Any suggestions? I could change my httpd.conf, but when the site for instance gets moved to a different server this problem might rear it's ugly head again...

Thanks!

--

Joost Schuttelaar
The Hague, NL


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