IIS7 Compression Failure

Question

I'm having issues with IIS7's static compression. I've read some of the other posts, and I'm out of options. Here's what I have:

In the applicationHost.config, I've set up:

    <httpCompression directory="%SystemDrive%\inetpub\temp\IIS Temporary Compressed Files" staticCompressionDisableCpuUsage="100">
        <scheme name="gzip" dll="%Windir%\system32\inetsrv\gzip.dll" staticCompressionLevel="9" />
        <staticTypes>
            <add mimeType="text/*" enabled="true" />
            <add mimeType="message/*" enabled="true" />
            <add mimeType="application/x-javascript" enabled="true" />
            <add mimeType="*/*" enabled="true" />
        </staticTypes>
    </httpCompression>

The "enable static compression" checkbox is enabled for my site.

I get a big fat uncompressed file when I load up the site. If I look at the request headers, I see:

Accept-Encoding : gzip,deflate

but, in the response, I get:

Content-Type: application/x-javascript

Last-Modified: Fri, 10 Jul 2009 01:13:41 GMT

Accept-Ranges: bytes

Etag: "3be6da9fb0ca1:0"

Server: Microsoft-IIS/7.0

X-Powered-By: UrlRewriter.NET 2.0.0, ASP.NET

Date: Fri, 10 Jul 2009 03:39:35 GMT

Content-Length: 81515

Anyone have any ideas what I'm doing wrong here?

Also, FWIW, I'm running in Integrated, not "Classic" mode.

UPDATE: I got it working, but I'm not sure why it works now. All I did was enable dynamic compression for the site, and everything started working. Anyone have any thoughts?

Answer 1

I'm not that good in IIS7 compression but I want to advise you to have a look at Helicon Ape mod-gzip module that provides comprehensive compression capabilities. The guide on how to enable and use Helicon Ape mod-gzip is here.

Answer 2

I got it working, but I'm not sure why it works now. All I did was enable dynamic compression for the site, and everything started working. If someone can give me an explanation for why this worked, I'll give them credit on the answer.