Re: [Cbor] Record proposal
Carsten Bormann <cabo@tzi.org> Thu, 11 November 2021 17:00 UTC
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From: Carsten Bormann <cabo@tzi.org>
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Date: Thu, 11 Nov 2021 18:00:22 +0100
Cc: Christian Amsüss <christian@amsuess.com>, cbor@ietf.org
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To: Kris Zyp <kriszyp@gmail.com>
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Subject: Re: [Cbor] Record proposal
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On 11. Nov 2021, at 16:35, Kris Zyp <kriszyp@gmail.com> wrote: > > Thank you for the explanation of your allocation strategy, really > appreciate it, that makes sense. It does seem a little surprising to > me that some of the 1+1 tags that are explicitly for very specific > technologies (Perl, We were young when we did this… Seven years later, RFC 8949 has adjusted the RFC 8126 policies only slightly, but with an understanding that 1+1 will be guarded more tightly. > YANG, Internet of Data things, etc.) would be > considered more "common" than a record structure designation, a > concept that I think is broadly used across many/most programming > languages. And it seems like many of these registrations would not > have a greater need for being short than a tag that specifically > yields significant and broad opportunities for dramatically improving > encoding efficiency/compactness (I don't know if you are interested in > some stats on that?). Actually, stats would be very interesting. I was assuming that the 1+1 setup comes with a number of 1+2 referencing records, the hit from going to 1+2 there as well would be relatively insignificant. Number are better than assumptions! > I would certainly argue that the broad semantic > application and the significant encoding efficiency benefits would > justify a 1+1 tag for a tag record. But if only 1+2 tags are being > permitted or strongly preferred, I can certainly adjust to that > criteria. If I resubmit with a 1+2 tag would that be easier for > registration, and would it be possible to have it submitted with > possible future consideration for upgrade to a 1+1 tag? > >> ...requiring data in the first record that also usually sets the base configuration... >> (In cbor-packed, we put the setup *around* the data — another variant that you might want to look at.) > > It seems like the significant problem with using an "around" type of > structure is that it requires an a priori knowledge of the structure > of the data that will be encoding prior to beginning encoding. That is a very valid argument. (We may want to revisit cbor-packed as well with respect whether the sender or the receiver pays that tax.) > […] > I had actually also been meaning to ask how this type of streaming of > data might work with the combination of cbor-packed and > cbor-sequences. It seems like a particularly valuable use case for > packed CBOR is in being able to create a socket for sending a sequence > of CBOR messages (between two remote hosts, for example), and sending > a packing table with values that are/will be frequently used in the > stream/sequence of CBOR messages. Yes, table setup that transcends a single CBOR data item in a sequence has been brought up before. Maybe it’s time to flesh out that design. > And if you believe that resubmitting > this tag registration with a 1+2 tag (probably 29299 based on your > ascii suggestion) would be the best course for getting registered, I > can proceed with that. Let’s see the numbers, but I do believe this would streamline the registration. Grüße, Carsten
- [Cbor] Record proposal Carsten Bormann
- Re: [Cbor] Record proposal Christian Amsüss
- Re: [Cbor] Record proposal Carsten Bormann
- Re: [Cbor] Record proposal Kris Zyp
- Re: [Cbor] Record proposal Carsten Bormann
- Re: [Cbor] Record proposal Kris Zyp
- Re: [Cbor] Record proposal Carsten Bormann
- Re: [Cbor] Record proposal Kris Zyp
- Re: [Cbor] Record proposal Kris Zyp
- Re: [Cbor] Record proposal Christian Amsüss
- Re: [Cbor] Record proposal Kris Zyp
- Re: [Cbor] Record proposal Carsten Bormann
- Re: [Cbor] Record proposal Kris Zyp
- Re: [Cbor] Record proposal Carsten Bormann
- Re: [Cbor] Record proposal Kris Zyp
- Re: [Cbor] Record proposal Kris Zyp
- Re: [Cbor] Record proposal Carsten Bormann
- Re: [Cbor] Record proposal Kris Zyp
- Re: [Cbor] Record proposal Kris Zyp
- Re: [Cbor] Record proposal Emile Cormier
- Re: [Cbor] Record proposal Kris Zyp
- Re: [Cbor] Record proposal Emile Cormier
- Re: [Cbor] Record proposal Carsten Bormann
- Re: [Cbor] Record proposal Emile Cormier
- Re: [Cbor] Record proposal Kris Zyp
- [Cbor] Request for reviewers for external documen… Christian Amsüss
- Re: [Cbor] Request for reviewers for external doc… Christian Amsüss
- Re: [Cbor] Record proposal Carsten Bormann
- Re: [Cbor] Request for reviewers for external doc… Christian Amsüss