Re: [dnsoverhttp] New draft: draft-hoffman-dns-over-http-00.txt

[Ted Hardie <[e-mail]>]

On Tue, Sep 20, 2016 at 2:43 PM, Paul Hoffman <[e-mail]>
wrote:

> On Sep 20, 2016, at 1:40 PM, Ted Hardie <[e-mail]> wrote:
> > Thanks for the draft.  Reading through it, it seems to posit a mechanism
> for providing a DNS API server that will serve the same function as a
> recursive resolver would now.
>
> We did not mean to limit it to recursive resolvers: it could be any DNS
> server. In Section 2.4, note the rd parameter can be set to 0. Maybe we
> should say this explicitly in the Introduction.
>
>
I guess the focus on discovery threw me there; clearly you wouldn't
provision authoritative servers with DHCP.


> > Given that this is basically similar to a recursive resolver putting up
> a new API, I'm not sure why the complication of a non-standardized prefix
> is the right trade-off.  Why not standardize it?  If not standardized, why
> not use the well known URI mechanisms?
>
> If folks prefer a standard prefix, we could certainly go that way. Having
> said that, if we started off with that instead, I strongly suspect that
> some would ask why we were forcing a particular URI on servers, and the
> modern IETF way is to give flexibility through discovery.
>
>
Well, ACME and others use well known URIs; that might be an approach to
consider (as the redirect gives you flexibility).


> > I also note that this seems to be answering a different use case than
> Patrick and Martin were talking about in regards to server push.  With
> this, server push might be used for something like additional data, but you
> wouldn't see this in the same context as "normal" HTTPS connections, so
> server push from a content server wouldn't apply. Have I got that bit right?
>
> Hopefully not. That is, we certainly want the server push model to work
> with our proposal.
>
> So, if I am connected to https://blogplatform.example.com/, and it wants
me to know the dns info for securedimages.example.com, what does it do in
this mode?

Ted



> --Paul Hoffman