Add HTTP Query Method Support

[hantsy]

See: https://www.ietf.org/archive/id/draft-ietf-httpbis-safe-method-w-body-02.html#name-simple-query-with-a-direct-

[gastaldi]

FWIW, that RFC draft has long expired, this is the last version: https://www.ietf.org/archive/id/draft-ietf-httpbis-safe-method-w-body-11.html

[hantsy]

Hello @gastaldi, more than ten years have passed since we parted in Boston in 2012. How are you?

Yeah, a lot of IETF drafts labelled as expired, not means it is not active. For example, HAL also labelled as expired, but still actively used in developer's community.

[jeffque]

We got a RFC! https://www.rfc-editor.org/info/rfc10008/

[jeffque]

As far as I could (for now) see, adding the new method seems trivial, but there is a catch: as QUERY is cacheable, the current cache in CacheResponseFilter needs to be smarter to allow for caching QUERY with body. For now it only caches based on URI (as cache key) for GET method, but now it needs to cache based on:

• URI
• method
• body (if method used is QUERY of course)

The sectio about caching mentions many other stuff that I cannot foresee how to implement, like "MAY remove semantically insignificant differences from request content "

[hantsy]

@gastaldi It is a published status now, https://datatracker.ietf.org/doc/rfc10008/history/