15:02:56 <RRSAgent> RRSAgent has joined #wot-discovery
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15:03:04 <kaz> meeting: WoT Discovery
15:03:21 <kaz> present+ Kaz_Ashimura, Michael_McCool, Kunihiko_Toumura, Tomoaki_Mizushima
15:07:13 <kaz> agenda: https://www.w3.org/WoT/IG/wiki/WG_WoT_Discovery_WebConf#19_December_2022
15:07:55 <kaz> scribenick: kaz
15:07:59 <kaz> topic: Minutes
15:08:13 <kaz> -> https://www.w3.org/2022/12/05-wot-discovery-minutes.html Dec-5
15:08:36 <kaz> approved
15:08:41 <kaz> topic: Logistics
15:09:03 <kaz> mm: this is the last meeting this year
15:09:12 <kaz> ... next meeting is a bit tricky
15:09:24 <kaz> ... normally Jan 16
15:09:48 <kaz> ... but due to the special meeting on the WG Charter, the next Discovery meeting will be on Jan 23
15:10:09 <kaz> ... anything else?
15:10:11 <kaz> (none)
15:10:16 <kaz> topic: IANA registration
15:10:32 <kaz> mm: Kaz contacted the IANA guys
15:10:44 <kaz> ... the TXT keys are updated now
15:11:03 <kaz> -> https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=wot IANA registry entries for WoT
15:11:09 <kaz> mm: so that's done
15:11:16 <kaz> ... please double check to make sure
15:11:28 <kaz> topic: DID registration
15:11:43 <kaz> mm: the next one is DID registration, but it's problematic
15:12:15 <kaz> -> https://github.com/w3c/wot-discovery/issues/402 Issue 402 - Register DID service names
15:12:33 <kaz> mm: normative change for the WoT Discovery topic?
15:12:34 <glomb> glomb has joined #wot-discovery
15:13:37 <kaz> -> https://github.com/w3c/did-spec-registries/pull/486 did-spec-registries PR 486 - Add WotThing and WotDirectory service types
15:14:29 <kaz> s/mm: normative change for the WoT Discovery topic?//
15:14:31 <kaz> mm: normative change for the WoT Discovery topic?
15:15:00 <kaz> ... the URL is describe within the example
15:15:24 <kaz> ... how to deal with that?
15:16:04 <kaz> kaz: if that is about an example, we could change that after CR transition
15:16:19 <kaz> mm: right
15:17:10 <kaz> ... what about the additional reference to the DID registry?
15:17:22 <kaz> ... that would be a normative reference, I think
15:17:44 <kaz> ... we would not add any assertion based on this change, though
15:18:08 <kaz> kaz: would suggest we ask PLH about that
15:19:16 <kaz> mm: and another possible point on adding an assertion defining the "@context"
15:20:33 <kaz> kaz: we need to talk with PLH about that as well
15:20:56 <kaz> mm: the question is that we don't have implementations about that feature
15:21:18 <kaz> kaz: we can add that feature and republish an updated CR
15:21:53 <kaz> s/and/but probably need to/
15:22:03 <kaz> s/mm: the question is that we don't have implementations about that feature//
15:22:05 <kaz> mm: the question is that we don't have implementations about that feature
15:22:14 <McCool_> https://github.com/w3c/wot-discovery/issues/402#issuecomment-1357835235
15:24:42 <kaz> kaz: in that case, my suggestion is (opt1) simply removing that feature or (opt2) adding that as an informative feature
15:25:14 <kaz> mm: the section "6.5 DID Documents" is already identified as "at-risk"
15:26:42 <kaz> kaz: "12.1 DID Service Name Registration" should be also removed if we remove "6.5 DID Documents"
15:26:53 <kaz> ... anyway, let's talk with PLH about this
15:26:53 <kaz> mm: ok
15:27:08 <kaz> topic: Next Charter
15:27:43 <kaz> mm: we'll talk about the next WG Charter during the week of Jan 16
15:28:06 <kaz> ... so we need to finalize what to be discussed for WoT Discovery today
15:28:32 <kaz> -> https://github.com/w3c/wot/blob/main/proposals/deliverable-proposals/discovery.md deliverable-proposals/discovery.md
15:28:45 <kaz> mm: (goes through the proposal)
15:28:57 <kaz> present+ Christian_Glomb
15:29:25 <kaz> ... signing for JSON-LD depends on RDF signing
15:29:33 <kaz> ... which is kind of heavy
15:30:07 <kaz> ... the second point around JSON Path
15:30:13 <kaz> ... then Geolocation
15:30:34 <kaz> q+
15:30:44 <kaz> ... would have a finite set of extension
15:31:53 <kaz> cg: would be good to come with some comment query
15:32:01 <kaz> ... based on use cases and best practices
15:32:07 <kaz> ... to see typical queries
15:32:13 <kaz> q+ glomb
15:32:19 <kaz> ack g
15:33:07 <kaz> mm: (adds comments around that)
15:33:25 <kaz> ... filters can be a general mechanism that can also encapsulate common queries
15:33:35 <kaz> ... such as searching by keyword or id
15:33:48 <kaz> ... we should look at some common use cases for additional filters
15:34:10 <kaz> cg: which filters to be formulated?
15:34:59 <kaz> mm: potentially, something like [[?filter="goe/lat=45.5,long=123.3,r=15)"]]
15:35:34 <kaz> cg: need some syntax for that purpose
15:35:54 <kaz> ... would be an addition to the search endpoint
15:36:46 <kaz> mm: e.g.: https://tdd.example.com/list?filter="geo(lat=45.5, long=123.3, r=15)|keyword('light')"
15:36:48 <kaz> q?
15:37:01 <kaz> cg: we should add support for Thing Model
15:37:29 <kaz> mm: do you mean storing TMs in TDDs?
15:37:32 <kaz> cg: yeah
15:37:47 <kaz> mm: and allowing links from TDs to be resolved
15:38:21 <kaz> cg: can use TM for validation
15:38:47 <kaz> mm: would be helpful to also be able to validate a TD against a TM
15:39:03 <kaz> ... (adds "validation" as well)
15:39:13 <kaz> ... validation could be improved
15:39:15 <kaz> q?
15:39:35 <kaz> ... hopefully this will be improved in TD 2.0
15:40:34 <kaz> kaz: I agree those topics are important
15:40:45 <kaz> ... but wondering which spec(s) to handle them
15:40:58 <kaz> ... maybe not or not only the WoT Discovery spec
15:41:14 <kaz> ... but (also) TD, etc., as well
15:41:18 <kaz> mm: yeah
15:41:54 <kaz> ack k
15:41:57 <kaz> q+
15:42:05 <kaz> ... Digital Twin may also be related
15:43:00 <kaz> kaz: yeah
15:43:32 <kaz> ... putting TM and Validation to this discovery.md is fine at the moment
15:44:13 <kaz> ... but during the Charter discussion next year, it would make more sense to consider which technology and which topic to be handled by which spec and which phase from the whole WoT lifecycle again
15:44:27 <kaz> mm: yeah, TM handling is not only for Discovery
15:45:01 <kaz> ack k
15:45:36 <kaz> ... Validation mechanism also to be defined in the TD spec
15:45:57 <kaz> ... also other protocols
15:46:02 <kaz> ... CoAP and MQTT
15:47:45 <kaz> ... HTTP2/QUIC
15:47:57 <kaz> ... time-based filter
15:48:29 <kaz> s|HTTP2/QUIC|HTTP/3, QUIC|
15:49:04 <kaz> ... (goes through the issues with the label of "defer to Discovery 2.0")
15:49:26 <kaz> -> https://github.com/w3c/wot-discovery/labels/defer%20to%20Discovery%202.0 Issues with "defer to Discovery 2.0" label
15:50:32 <kaz> mm: additional security features, e.g., object security/JOSE
15:50:41 <kaz> ... additional checks
15:51:34 <kaz> s/checks/checks during registration
15:51:41 <kaz> rrsagent, make log public
15:51:45 <kaz> rrsagent, draft miutes
15:51:45 <RRSAgent> I'm logging. I don't understand 'draft miutes', kaz.  Try /msg RRSAgent help
15:51:53 <kaz> s/rrsagent, draft miutes//
15:51:57 <kaz> rrsagent, draft minutes
15:51:58 <RRSAgent> I have made the request to generate https://www.w3.org/2022/12/19-wot-discovery-minutes.html kaz
15:52:20 <kaz> cg: also Scripting API for Discovery as well?
15:52:36 <kaz> ... not really updated about the current discussion, though
15:53:19 <kaz> mm: Scripting API is informative, but should be consistent
15:53:31 <kaz> ... any other thoughts?
15:53:41 <kaz> (none)
15:54:06 <kaz> mm: will create a PR to add these points to discovery.md
15:55:17 <kaz> -> https://github.com/w3c/wot/pull/1046 wot PR 1046 - Update discovery.md
15:55:18 <McCool_> https://github.com/w3c/wot/pull/1046
15:55:24 <kaz> mm: any objection to merge this?
15:55:26 <kaz> (none)
15:55:41 <kaz> s|https://github.com/w3c/wot/pull/1046||
15:55:43 <kaz> merged
15:55:51 <kaz> topic: Testing
15:56:21 <kaz> -> https://w3c.github.io/wot-discovery/testing/report.html latest Implementation Report on GitHub
15:56:41 <kaz> mm: still bunch of features at-risk
15:57:12 <kaz> s/features/security features/
15:57:22 <kaz> ... also bunch of privacy features at-risk
15:57:57 <kaz> ... then CoAP feature
15:58:25 <kaz> ... security-bootstrapping-endpoints should be easy
15:58:53 <kaz> ... still missing UDP-based features
15:59:18 <kaz> ... would make more sense to have CoAP-based directory
15:59:32 <kaz> ... or MQTT-based
16:00:09 <kaz> ... some of them are really fatal but the core functionality should be OK
16:01:01 <kaz> ... any other comments?
16:01:17 <kaz> ... please look at the updated Implementation Report as well
16:01:35 <McCool_> https://www.w3.org/WoT/IG/wiki/Main_WoT_WebConf#Special_Meetings_to_Discuss_Next_Charter
16:01:41 <kaz> ... will see you at the special meeting on Charter on Jan 16
16:01:54 <kaz> ... link available above
16:02:01 <kaz> ... any other business?
16:02:03 <kaz> (none)
16:02:06 <kaz> [adjourned]
16:02:09 <kaz> rrsagent, make log public
16:02:14 <kaz> rrsagent, draft minutes
16:02:15 <RRSAgent> I have made the request to generate https://www.w3.org/2022/12/19-wot-discovery-minutes.html kaz
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