On Fri, May 14, 2004 at 11:49:12PM -0700, Jeff Barr wrote:
> Hi,
>
> I am a long-time user and big fan of Curl, fetching 2+ GB per
> day of RSS at www.syndic8.com .
>
> I recently upgraded to Curl 7.11.2 and am currently doing some
> experimentation with CURLOPT_ENCODING.
>
> Is there any way for me to detect that a retrieval was actually
> decompressed by Curl? I tried comparing the value retrieved by
> CURLINFO_SIZE_DOWNLOAD against the value returned from the
> curl_exec call (I am using RETURN_TRANSFER) but they are
> always the same.
>
> Intuitively, I was expecting CURLINFO_SIZE_DOWNLOAD to return
> the physical number of bytes transferred, not the expanded
> size?
>
> Is the actual size available? Ultimately, I would like to be
> able to compute the effective compression ratio for each
> RSS feed.

You should be able to catch the HTTP headers and look for a
Content-Encoding: line.

>>> Dan

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