Hi Tommy, Thanks for the announcement! It's really exciting to see this deployed in the wild. Clarification question: your email mentioned support for the HTTPS DNS query, but it didn't mention when iOS makes those queries. For example, do you query this record every single time you perform A/AAAA queries? (in the context of a Network.framework connection to port 443)
David On Fri, Sep 25, 2020 at 12:59 PM Tommy Pauly <tpauly= 40apple....@dmarc.ietf.org> wrote: > Hello DNSOP & QUIC, > > I wanted to provide an update that the production version of iOS 14, which > shipped last week, includes support for sending HTTPS (SVCB) DNS queries > (RR type 65) for applications using our system networking APIs. > > The implementation status has been updated here: > https://github.com/MikeBishop/dns-alt-svc/blob/master/svcb-implementations.md > > For those with HTTP/3 QUIC deployments, this means that (when HTTP/3 > experimental support is enabled) iOS will use the ALPN indication in the > HTTPS record to enable HTTP/3 prior to receiving an Alt-Svc indication. As > previously noted on the DNSOP list, Cloudflare is already supporting > publishing these records, and we’d encourage other server deployments that > support QUIC to do the same. > > To note, this behavior is the same in the betas of macOS 11. > > Best, > Tommy >
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