> -----Original Message----- > From: dns-privacy [mailto:[email protected]] On Behalf Of > Watson Ladd > Sent: Friday, May 01, 2015 9:51 AM > To: Tony Finch > Cc: Christian Huitema; [email protected]; Phillip Hallam-Baker; Warren > Kumari; Paul Hoffman > Subject: Re: [dns-privacy] DPRIVE over UDP or TCP > > On Tue, Apr 28, 2015 at 4:34 AM, Tony Finch <[email protected]> wrote: > > Phillip Hallam-Baker <[email protected]> wrote: > >> On Tue, Apr 28, 2015 at 5:04 AM, Tony Finch <[email protected]> wrote: > >> > Phillip Hallam-Baker <[email protected]> wrote: > >> >> > >> >> Having it work for content and DNS are two different things. The > >> >> routing tables only need to be constant for a few minutes to > >> >> support TCP content download. For DNS to be viable they have to be > >> >> stable much longer. > >> > > >> > Why? > >> > >> The byterange extensions in http mean that it is possible to resume a > >> session interrupted part way through if it is static content. > > > > Most HTTP interactions aren't resumable in this way, so this > > observation does not suggest to me that HTTP needs less routing stability > than DNS. > > > >> If the anycast changes then you are going to have to timeout and resume. > > > > This is also true for HTTP. I still don't see why DNS needs more > > routing stability than HTTP. > > DNS doesn't. But proposals like DNS over TLS rely on extremely long lived > connections. Most HTTP traffic goes over short connections that end quickly.
WebPush already uses long-lived HTTPS session to push events to applications on the endpoint. -Tiru > If we decide to shorten the connection length, even with features like TLS > 1.3's 0-RTT, the traffic quantity and computational load will still increase. > That's on top of the increased computation of TLS vs DNSCrypt. > > HTTP sends lots of packets over a short time, DNS few packets, long time, > very fast response required. That's on top of different placements in > networks. Maybe this isn't an issue, but I see some evidence it will be, and > not much it won't be. > > Sincerely, > Watson Ladd > > > > Tony. > > -- > > f.anthony.n.finch <[email protected]> http://dotat.at/ Rockall, Malin, > > Hebrides, Bailey: West or northwest, becoming cyclonic 5 to 7, > > occasionally gale 8, except in Hebrides. Rough or very rough, > > occasionally high at first in Bailey. Rain or showers. Good, occasionally > moderate. > > > > _______________________________________________ > > dns-privacy mailing list > > [email protected] > > https://www.ietf.org/mailman/listinfo/dns-privacy > > > > -- > "Man is born free, but everywhere he is in chains". > --Rousseau. > > _______________________________________________ > dns-privacy mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/dns-privacy _______________________________________________ dns-privacy mailing list [email protected] https://www.ietf.org/mailman/listinfo/dns-privacy
