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Bug #42911 CURLOPT_ENCODING doesn't seem to support 'gzip'
Submitted: 2007-10-10 03:21 UTC Modified: 2007-10-21 01:00 UTC
Avg. Score:4.8 ± 0.4
Reproduced:3 of 3 (100.0%)
Same Version:1 (33.3%)
Same OS:2 (66.7%)
From: dmceo415 at yahoo dot com Assigned:
Status: No Feedback Package: cURL related
PHP Version: 4.4.7 OS: Windows XP
Private report: No CVE-ID: None
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 [2007-10-10 03:21 UTC] dmceo415 at yahoo dot com
The manual has this to say about CURLOPT_ENCODING:

'The contents of the "Accept-Encoding: " header. This enables decoding of the response. Supported encodings are "identity", "deflate", and "gzip". If an empty string, "", is set, a header containing all supported encoding types is sent.'

However, when I use curl_setopt($ch, CURLOPT_ENCODING, 'gzip') in a script, CURLOPT_VERBOSE tells me:

* Unrecognized content encoding type. libcurl understands 'identity' and 'deflate' content encodings.

So, is the manual wrong, or is there a bug with respect to the 'gzip' encoding?


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 [2007-10-10 13:49 UTC] dmceo415 at yahoo dot com
(changing my email address)
 [2007-10-10 21:52 UTC] daniel at haxx dot se
It seems you're using a very old libcurl version... That text was modified in 7.10.5 - which is well over 4 years old!
 [2007-10-13 13:08 UTC]
Works fine for me with PHP 5.3-dev and libcurl 7.17.0.  Can you please upgrade to a more recent version of libcurl and try again?  Thanks!
 [2007-10-21 01:00 UTC] php-bugs at lists dot php dot net
No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
 [2019-05-14 12:30 UTC] php at herber-edv dot de
Problem is back in cURL 7.58.0 + PHP 7.3.5. But only some few URLs cause this problem.

curl_setopt($cl, CURLOPT_ENCODING, 'gzip');

If CURLOPT_ENCODING is used (no mather which value!), curl returns this error: "Unrecognized content encoding type. libcurl understands deflate, gzip content encodings."
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