DNS over CoAP and application/dns+cbor projects

DNS Servers and Stub Resolvers to Extend with DoC

This provides a non-exhaustive list of existing DNS servers and (stub) resolvers that have potential to be extended with DNS over CoAP and the application/dns+cbor message format.

DNS Servers

• Source: https://en.wikipedia.org/wiki/Comparison_of_DNS_server_software#Feature_matrix
  • Prerequisite: Free Software and DoH support

( 🟨 = WIP, ⬜ = Not Implemented, ✅ = Implemented)

Software	Developer	Language	License	Repo Link	DoH	DoC	DNS+CBOR
BIND	ISC	C	Apache-2.0	https://gitlab.isc.org/isc-projects/bind9/	✅	⬜	⬜
CoreDNS	CNCF	Go	Apache-2.0	https://github.com/coredns/coredns	✅	⬜	⬜
Knot Resolver	CZ.NIC	C/Lua	GPL-3.0	https://gitlab.nic.cz/knot/knot-resolver	✅	⬜	⬜
PowerDNS	PowerDNS	C++	GPL-2.0	https://github.com/PowerDNS/pdns	✅	⬜	⬜
Technitium DNS Server	Technitium	C#	GPL-3.0	https://github.com/TechnitiumSoftware/DnsServer	✅	⬜	⬜
Unbound	NLnet Labs	C	BSD-3	https://github.com/NLnetLabs/unbound	✅	🟨	⬜

Libraries and (stub) resolvers

( 🟨 = WIP, ⬜ = Not Implemented, ✅ = Implemented)

Software	Developer	Language	License	Repo Link	DoH	DoC	DNS+CBOR
c-ares	c-ares	C	MIT	https://github.com/c-ares/c-ares	⬜ 1	⬜	⬜
Chromium	Google	C++	BSD-3	https://chromium.googlesource.com/chromium/	✅	⬜	⬜
curl	curl	C	curl (MIT/BSD-like)	https://github.com/curl/curl	✅	⬜	⬜
dig	ISC	C	Apache-2.0	https://gitlab.isc.org/isc-projects/bind9/	✅	⬜	⬜
dnspython	rthalley	Python	ISCL	https://github.com/rthalley/dnspython	✅	⬜	⬜2
Firefox	Mozilla	JavaScript	MPL-2	https://searchfox.org/mozilla-central/source/browser/components/doh	✅	⬜	⬜

Footnotes

1. https://github.com/c-ares/c-ares/issues/612 ↩

2. Monkey-patched version for dns.query.https() by @miri64 exists. Please ask via [email protected] for the source. ↩