Deflate does not work if both flags about zstd are enable

[jefer94]

FAQ

• Yes, my issue is not about variability or throttling.
• Yes, my issue is not about a specific accessibility audit (file with axe-core instead).

URL

https://breathecode-test.herokuapp.com/v1/admissions/syllabus/version?sdfaeeeeeeer

What happened?

Chrome is not decompressing Deflate if all the flags related to zstd are enabled, and Chrome is saying me that it support Deflate, but in this case it is false

What did you expect?

That I could use Deflate with these flags

What have you tried?

If these headers are enable, Chrome and Chromium can't decode a request encoded with Deflate
https://breathecode-test.herokuapp.com/v1/admissions/syllabus/version?sdfaeeeeeeer

Enable

Disable

When you change these setting you must add other letter to the url because this endpoint includes the etag and the right/wrong response will be cached

How were you running Lighthouse?

Chrome DevTools

Lighthouse Version

Chrome 121

Chrome Version

Version 121.0.6129.0 (Official Build) unknown (64-bit)

Node Version

No response

OS

Linux fedora 6.5.11-300.fc39.x86_64 #1 SMP PREEMPT_DYNAMIC Wed Nov 8 22:37:57 UTC 2023 x86_64 GNU/Linux

Relevant log output

No response

[jefer94]

Hey, I will add a patch to that server to avoid it happens in production, you must pass only deflate to Accept-Encoding to force this error

            accept_encoding = request.META.get('HTTP_ACCEPT_ENCODING', '')

            # chrome have a bug when all zstd flags are enabled, deflate is not decoded in this case
            is_deflate_default = 'zstd' not in accept_encoding

I will check if have an error in my code, wait a minutes

[jefer94]

never mind, this issue was cause by a double compression caused by if that must be an elif