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Re: [Doh] meta qtypes

Dave Lawrence <tale@dd.org> Mon, 19 March 2018 14:42 UTC

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Date: Mon, 19 Mar 2018 10:42:12 -0400
From: Dave Lawrence <tale@dd.org>
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Subject: Re: [Doh] meta qtypes
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Tony Finch writes:
> The problem with AXFR is [...] it [doesn't] fit into the
> udpwireformat media type.

Setting aside the other points you brought up ... it doesn't?

I mean, sure, an AXFR would likely exceed UDP packet sizes typically
seen in the wild, but why not a hypothetical jumbo packet,
content-length mumblety-megabytes?  dns-udpwireformat is not defined in
the doc as intrinsically limiting message length; multiple messages
happen with DNS/TCP only because of the defined 64k limit for them.
"udp" in the type only means "doesn't have the 16 bit prefix length".

Does this too need to be made more explicit in the doc?  I don't
recall any discussion of message size limits, or lack thereof.

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