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Re: [Cbor] Multiple questions with CBOR for DNS

Martine Sophie Lenders <martine.lenders@tu-dresden.de> Thu, 09 November 2023 15:15 UTC

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Date: Thu, 09 Nov 2023 16:15:27 +0100
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To: Carsten Bormann <cabo@tzi.org>
CC: Esko Dijk <esko.dijk@iotconsultancy.nl>, "cbor@ietf.org" <cbor@ietf.org>, "draft-lenders-dns-cbor.authors@ietf.org" <draft-lenders-dns-cbor.authors@ietf.org>
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From: Martine Sophie Lenders <martine.lenders@tu-dresden.de>
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Subject: Re: [Cbor] Multiple questions with CBOR for DNS
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Hi Carsten,

On 09.11.23 16:06, Carsten Bormann wrote:
> On Nov 9, 2023, at 15:44, Martine Sophie Lenders <martine.lenders@tu-dresden.de> wrote:
>>
>>> Hi Esko,
>>>> question-section = [question+]
>>>>      question = (
>>>>        name: domain-name,
>>>>        ? type-spec,
>>>>      )
>>> The “+” here actually can be efficiently implemented, as long as domain-name and type-spec don’t overlap.
>>
>> That raises two questions to me:
>>
>> (1) Can the necessity of type-spec when the number of `question`s is >1 somehow expressed in CDDL?
> 
> 
> Why is type-spec necessary in this case?

In the current draft, it is not, but if we go for the name component 
route, it will become hard to distinguish between the name for a second 
question or another component of the name for the first. Just 
necessitating at least a type in-between the names would help with that

> 
> Grüße, Carsten
>

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