Baggage header parsing regex missing whitespace

[x48zhu]

Hello,
While I'm looking at how key-value pairs are parsed from the baggage header here, I think it include the space and tab, which are valid characters according to the doc, in the key or value.

For example, if I have a baggage header whose content is "key = value", the current behavior returns "key " and " value" (including the whitespace).

I think a better Regex expression could be (%S+)%s*=%s*(%S+)

[yangxikun]

Leading and trailing whitespaces (OWS) are allowed and are not considered to be a part of the key.
Leading and trailing whitespaces (OWS) are allowed and are not considered to be a part of the value.

I think we can trim the key and value after split.

[x48zhu]

Yeah, that should work too.
Or you could try the Regex expression (%S+)%s*=%s*(%S+) I think it works correctly for me.
Either way is fine!