# CBOR WG Meeting - IETF 108 Monday, July 27, 2020 13:00-13:50 UTC Chairs: Francesca Palombini, Jim Schaad Jabber Logs: https://www.ietf.org/jabber/logs/cbor/2020-07-27.html Recordings: https://www.youtube.com/watch?v=AYadrd3mdz8 Minute takers: MCR Agenda: Should we have interims until 2021? No: we should stop at IETF109, and we will not meet in December, and resume in January. ## 7049bis - AD (2 min) ## * https://tools.ietf.org/html/draft-ietf-cbor-7049bis-14 - In IETF last call until mid August ## CBOR Date Tag - chairs (2 min) ## * https://tools.ietf.org/html/draft-ietf-cbor-date-tag-05 - In IETF last call until mid August - Discussion in jabber about replacing John Lennon with: Jim Morrison, Jon Postel. ## CDDL Updates - CB ## ### Additional Controls for CDDL (draft-bormann-cbor-cddl-control-01) - [JS] Should go ahead and do an adoption call (chair) - [FP] Need to check if we need to do a single v2.0 document or if doing pieces. ## Issue # 204 in the CBOR Bis Document surjective request, not satisfied by Not-A-Number (NaN), and (_). [MCR] Remove all from 7940 bis? [CB] No just have a third document [JS] I am not sure that I see the benefits of making this complete done [FP from floor] Can we get this to do CBOR sequences as well? [Mohit] why not in rfc7049bis? [CB] Not in the bis because it would delay that document. Also need to take time to be careful on this. ## CBOR Tags for OID - CB (10 min) ## * https://tools.ietf.org/html/draft-bormann-cbor-tags-oid-07 [FP] Chairs - adoption call ended yesterday and the adoption succeeded. ## Packed CBOR - CB ## * https://tools.ietf.org/html/draft-bormann-cbor-packed-00 slide 6 includes numbers on JSON/CBOR/Deflate/CBOR Packed. [MCR] Need more information on the rump part. Seems to be better to put at the end of the array for stream processing. [CB] May need to make comments in similar nature about shared items in the extracted pieces [HB] I think this is necessary work. May want to include this with tagging in the CDDL. Packing of URIs alone might be worth it. [Brendan Moran] Basically invented this for SUIT already. Two nested lists can cause problems with pull parsers. Minimize the size of references into the list. New simple types that might be used? [Robert Wilton] How can we be sure that existing implementations are going to be able to handle this. Don't want to have two spaces [CB] Similar to other tags. Generic decode will present packed CBOR as CBOR to the application. [Chris Lemmons] Supports this as well. Has prevented adoption in two other standards that I have been working in. Need a compacted/compressed version for URIs as well. Also would like to see external dictionaries as well. [FP] Hearing lots of support for the document. Need to see some more work on the document before adoption call. [CB] Need to publish implementation so people can play with this more. Please add comments for the document before next version is published. [FP] Is there a timeline where this is needed? [BM] Manifest is almost done and probably too late for that [HB] Would have been nice for for something that just moved to IESG [CB] Can always use this for existing documents at any point in the future if you have not already done this. [JY] WebPackaging probably has time to use packed CBOR [CB] what's the timeline for that? [JY] probably years. ## Notable Tags - CB ## * https://tools.ietf.org/html/draft-bormann-cbor-notable-tags-01 *[JS]: Jim Schaad *[MCR]: Michael Richardson *[FP]: Francesca Palombini *[CB]: Carsten Bormann *[MJ]: Mike Jones *[BL]: Barry Leiba *[HB]: Henk Birkholz *[JY]: Jeffrey Yasskin