On 22-Apr-2015 03:24 pm, Ted Hardie <[email protected]> wrote: > On Wed, Apr 22, 2015 at 10:15 AM, 🔓Dan Wing <[email protected] > <mailto:[email protected]>> wrote: > During the DPRIVE meeting in Dallas, several questions came up about UDP > versus TCP. We had previously submitted a "DNS over DTLS" document which > predated DPRIVE. We re-submitted the document with a few edits and a > filename that makes it easier to find, > https://tools.ietf.org/html/draft-wing-dprive-dnsodtls > <https://tools.ietf.org/html/draft-wing-dprive-dnsodtls>, diffs at > https://tools.ietf.org/rfcdiff?url1=draft-wing-dnsop-dnsodtls-01&url2=draft-wing-dprive-dnsodtls-00 > > <https://tools.ietf.org/rfcdiff?url1=draft-wing-dnsop-dnsodtls-01&url2=draft-wing-dprive-dnsodtls-00> > > The working group may want to consider the advantages of DNS over DTLS over > UDP compared to using TCP: > > * No reliance on operating system support of TCP Fast Open [RFC7413] to > achieve same number of round trips. > * Avoidance of TCP's network head of line blocking. > > > ​Just to confirm my understanding, with DTLS plus anycast, you'd have similar > issues for restart as TCP (state being associated with a single endpoint, > timeout required for flushing state). Is that your thinking as well?​
They are different, notably around a 'synchronized' TCP session. See my other email about anycast, subject was Anycast and TCP-based DPRIVE queries, http://www.ietf.org/mail-archive/web/dns-privacy/current/msg00729.html -d > > regards, > > Ted > > > -d > > > _______________________________________________ > dns-privacy mailing list > [email protected] <mailto:[email protected]> > https://www.ietf.org/mailman/listinfo/dns-privacy > <https://www.ietf.org/mailman/listinfo/dns-privacy> >
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