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Re: [DNSOP] [Ext] Re: [Doh] Alternate proposal for transport indication in draft-ietf-dnsop-dns-wireformat-http

Tony Finch <dot@dotat.at> Wed, 04 April 2018 21:11 UTC

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Date: Wed, 04 Apr 2018 22:11:29 +0100
From: Tony Finch <dot@dotat.at>
To: Paul Vixie <paul@redbarn.org>
cc: Ted Lemon <mellon@fugue.com>, dnsop@ietf.org, doh@ietf.org, Ray Bellis <ray@bellis.me.uk>
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Subject: Re: [DNSOP] [Ext] Re: [Doh] Alternate proposal for transport indication in draft-ietf-dnsop-dns-wireformat-http
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Paul Vixie <paul@redbarn.org> wrote:
> Ted Lemon wrote:
> >
> > For your laptop use case, why wouldn't you just have the thing running
> > on the laptop do truncation if the answer is too long?
>
> that would be low fidelity.

I'm interested to know what breaks with something like dnscrypt-proxy or
stubby that works with your proxy.

>From a quick look, I think your proxy doesn't handle AXFR and (more
generally) doesn't map client TCP connections onto server TCP connections,
so it doesn't allow a client to distinguish between servers that have
serial vs concurrent DNS-over-TCP request handling in a way that a truly
high-fidelity tunnel would.

Tony.
-- 
f.anthony.n.finch  <dot@dotat.at>  http://dotat.at/
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