John Kristoff <[email protected]> wrote: > On Wed, 21 Nov 2012 14:19:02 +0000 > Tony Finch <[email protected]> wrote: > > > I doubt it would provide any advantage compared to DNS over TCP. > > Your doubt isn't very convincing to me, but I'm not inclined to argue > too strenuously that it would be worth doing in lieu of just utilizing > TCP.
I should probably expand, then. The difference between DCCP and TCP is it leaves it to the application to handle packet loss and re-ordering. DNS-over-TCP allows re-ordering of application-level responses so it avoids some of the head-of-line blocking problem. DNS-over-DCCP would have to reimplement some kind of truncation/retry logic. It would not have UDP's advantages of no setup latency and minimal kernel state - it doesn't seem very much lighter than TCP. > [...] would help address the problem if something like DCCP were to > supplant UDP. There's the rub :-) Tony. -- f.anthony.n.finch <[email protected]> http://dotat.at/ Forties, Cromarty: East, veering southeast, 4 or 5, occasionally 6 at first. Rough, becoming slight or moderate. Showers, rain at first. Moderate or good, occasionally poor at first. _______________________________________________ dns-operations mailing list [email protected] https://lists.dns-oarc.net/mailman/listinfo/dns-operations dns-jobs mailing list https://lists.dns-oarc.net/mailman/listinfo/dns-jobs
