Session Date/Time: 25 Jul 2023 16:30

core

Summary

This was the core working group session at IETF 117. Discussions covered updates on several drafts including core-comi, core-coma, core-href, dns-over-coap, attack-on-coap, kudos, oscor-capable-proxies, and coap-over-ble. Decisions were made on adoption of oscor-capable-proxies. An informal side meeting was scheduled for Friday to further discuss CoAP non-traditional responses, CoreClar, and locally significant URIs.

Key Discussion Points

core-comi and core-coma: Discussion focused on extracting identifiers from YANG documents and RPC examples.
core-href: Focused on the representation of empty paths in TRIs (CRI references), with a preference for using "null".
dns-over-coap: Feedback received from Ben Schwartz (Meta) on using application DNS seabor and service bindings. Potential for collaboration with DNSOP. The strength of the root path recommendation was also discussed.
attack-on-coap: Discussion on mitigation strategies for replay attacks, specifically related to blockwise transfer. Proposed solutions involve extending request tag usage or typing eTags.
kudos: Discussion on splitting the ID update procedure into a separate document. Also discussed establishing an Xbyte registry and concerns around how the client initiate kudos.
oscor-capable-proxies: Concerns of lightweight-m2m use cases. It was proposed that clarification with D. Navarro would be benefitial.
coap-over-ble: Discussion on URI formats, with consideration of MAC addresses and locally significant URIs.

Decisions and Action Items

core-href: The authors will implement the use of 'null' for representing empty paths in TRIs.
oscor-capable-proxies: The working group decided to adopt the oscor-capable-proxies draft. Adoption call will take place over the mailing list. The author's will further collaborate with D. Navarro on use cases for lightweight-m2m.
kudos:
- J. Hildebrand will need to follow-up on previous point about client initiate kudos.
- A further discussion is needed whether this document should be split with IETF chair member Jaime after this meeting.

Next Steps

Authors to address open points and feedback on the relevant drafts.
Resume interim meetings on August 30th.
Hold informal side meeting on Friday to discuss CoAP non-traditional responses, CoreClar, and locally significant URIs.