W3C

WoT-IG/WG

17 February 2021

Attendees

Present
Daniel_Peintner, David_Ezell, Kaz_Ashimura, Kunihiko_Toumura, Michael_Koster, Michael_Lagally, Michael_McCool, Philipp_Blum, Ryuichi_Matsukura, Sebastian_Kaebisch, Takahisa_Suzuki, Tetsushi_Matsuda, Tomoaki_Mizushima
Regrets
-
Chair
Sebastian
Scribe
McCool

Meeting minutes

guests

new invited expert, Philipp Blum

Philipp: self-intro; use case, connect smart devices, 3-4 years have been contributing to RIOT OS, but needs metadata standard, WoT fits this
… have previously contributed to plugfest
… this time will join with a more advanced implementation

Sebastian: what are you currently planning with RIOT OS?

Philipp: also working on a dev kit, temp sensor, crypto IC, etc.
… not a particular use case

Sebastian: also Michael Koster will join us as an invited expert at some point, in progress

Lagally: Philipp, sounds interesting; in arch group, have been talking about min size for a device?

Philipp: we talked about this at length in security as well
… we discussed streaming, signing, etc.
… wondering about use cases for TD consumption, streaming, etc.
… and I am working on a small device, e.g. the Nordic

McCool: updated hw.md file in wot-testing with some notes, btw

Sebastian: question, this is coap only?

Philipp: coap is most used, but can also use http, etc.

Kaz: Philipp, please join plugfest call after this call, if you can

minutes Feb 10 review

Feb-10

Kaz: regarding the objectives, note this is really something the W3C Industry Champions should be doing. so the group don't have to do anything beyond our usual planning, though your input on the updated planning for publication, liaison and deployment would be helpful

McCool: regarding OneDM and joint call planning, we can talk about that during F2F planning

Sebastian: also talked about web page, animation, etc.

Sebastian: any objections to publishing?

Koster: typo needs to be fixed for Perey's name

other than that, no objections

(typo fixed and approved)

Quick Updates

Sebastian: TPAC will be virtual this year

Kaz: using Zoom probably, details still being discussed, probably Oct

Sebastian: probably no actual F2F until next year

McCool: agree

Sebastian: WoT Japanese CG, Feb 27, which is a Saturday
… need to link from the marketing page, issue created: https://github.com/w3c/wot-marketing/issues/121

Lagally: would be good to have a top-level view of the community groups

McCool: the original design was for "a" CG, but now we have more than one, will have to rethink

Sebastian: renaming master to main

McCool: wot-testing done, have not tested pending PRs
… suggest doing wot-discovery next, has pending PRs, but they are from me
… maybe wot-security and wot next
… then let's see next week

Lagally: also seems to be some errors

<mlagally> I noticed that several specifications (including TD, arch, profile) have a red respec error with a cryptic error message.

<mlagally> This looks bad and it's unclear what can be done to resolve it.

Joint Calls

McCool: trying to organize joint calls for March 15, but only a 3h session, 1.5h already allocated
… but a few other 30m calls would make sense

Sebastian: looking into OPC-UA

Kaz: working on formal process with ECHONET, but in plugfest we have some informal activities planned. so I'm asking them about if it's ok to start this informal collaboration this time to make sure too.

McCool: working on APA and T2TRG

Plugfest planning

Sebastian: plugfest planning

McCool: minimum sizes; maybe some use cases from Philipp; geolocation, see PR

<kaz> PlugFest page

Sebastian: for F2F planning, please propose agenda topics in wiki

Liaisons and joint calls

Sebastian: any updates on joint calls?

McCool: nothing yet for T2TRG

Koster: still working on OneDM doodle, trying to find a better time

McCool: getting a session on March 15 would be nice, but a separate call is ok too

Sebastian: also still negotiating with OPC-UA

<mjk> I will schedule a joint call with OneDM before March 15th

Sebastian: and W3M, regarding joint charter, etc.

Lagally: plan is that OPC will be creating a companion spec as an OPC activity?

Sebastian: discussion is whether this should be a joint charter, and if so, why only OPC, and not ECHONET, etc?

Lagally: the question is why?

Sebastian: should not in general have to do a liaison just to do bindings

Lagally: my understanding of the liaison goal was to get groups to work together

Kaz: probably we should have a dedicated call to discuss how to deal with liaisons

Kaz: ITU-T invitation out; cannot attend use case call, invited to F2F in March
… for OGC and ECHONET, have been working on formal arrangements
… OGC willing to extend current liaison, working on that
… ECHONET having internal discussions, will get back to us next week.

TF reports

in scripting, discussed partial TD validation, management API for security

security, talked about signing, canonicalization, validation, and memory requirements for small devices

<sebastian> https://w3c.github.io/wot-marketing/

discovery, updated the information model (see updates in editor's draft), discussed earlier version of geolocation draft

marketing, discussed web page, animation, problems with directly embedding mashups (twitter, YouTube), organization of documents, videos, CGs, etc.

have also been working on captions for video

Lagally: would be nice to share the link to the actual documentation source
… main readme is to very old page, hard to find sources

<sebastian> sources of the webpage: https://github.com/w3c/wot-marketing/tree/master/docs

Lagally: please update main readme to point to the right place, is broken

Sebastian: ok, good points (updates "proposals" to "doc")

Kaz: let me play the video so we can see current status, and captions
… just got the captions yesterday, still need to check spelling, etc.

Sebastian: needed to fix some weird UTF-8 issues, Kaz looking into that

<kaz> and already fixed as shown :)

Lagally: no use case call this week; trying to get ITU-T to join us but can't make next call

<kaz> PlugFest page

McCool: will discuss plugfest call in ten minutes, but is coming up fast
… if you can't make it, we do need TDs

Sebastian: TD, recent topics was TM
… also looked at MODBUS binding briefly, hopefully more on that today

Lagally: arch, discussed definition of TD fragment
… in profiles, discussed limited to accommodate small devices, if you want input on that please join the call, will try to conclude that tomorrow

Sebastian: ok, let's adjourn, do testing at 10 past

<kaz> [main call adjourned; plugfest call starts 10mins past the hour]

Minutes manually created (not a transcript), formatted by scribe.perl version 127 (Wed Dec 30 17:39:58 2020 UTC).