Improvement in Cache Control Header Parsing

[Yash-294]

Version

4.5.17

Context

In the current implementation, the Cache-Control header is split only on comma as highlighted. However, some servers [ upstream ] send space-separated values for cache-control directives, which causes parsing issues.

Steps to reproduce

No response

Do you have a reproducer?

No response

[Yash-294]

I am volunteering

[tsegismont]

@Yash-294 rfc9111 describes the cache control header as a comma-separated list of values.

Do you know which server has a bad behavior? Is it widely used?