On Mon, 18 Nov 2019, Niall O'Reilly via curl-library wrote:
I've been thinking about how to extend dohprobe() to query for an RRset
containing such data, which action may be useful for other use cases
involving existing TXT, SRV, TLSA, and URI RR types, as well as future
RRtypes, such as SVCB.
SVCB is what the current ESNI draft wants, right? (btw there's now a poll
going for what to name those new records over at:
https://lists.w3.org/Archives/Public/ietf-http-wg/2019OctDec/0117.html )
- Introduce new functions dohprobepfx() and doh_encodepfx(),
corresponding to dohprobe() and doh_encode respectively, each with an
additional `const char *prefix` parameter.
- Retain dohprobe() and doh_encode(), but as trivial
wrappers around the "pfx" functions, each passing NULL as the argument to
the corresponding "pfx" function, so that existing invoking code need not
be modified, and duplication of code can be avoided.
Seems straight forward and sensible to me!
I expect to deal with reception of the TXT response in a separate PR, so as
to keep changes small and modular.
The TXT records for old-draft- ESNI that cloudflare will soon stop providing?
--
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