2020-06-helsinki

IRTF T2TRG/W3C WoT work meeting, 2020-06-08 (originally to take place in Helsinki)

In the Internet of Things (IoT), billions of new devices are being connected to the Internet. At this scale, manual configuration is no longer affordable. Devices need to make available self-descriptive information, and the systems using them need to discover and make use of this information, without the need for extensive human intervention.

A first set of standards for self-description and discovery has been completed by IETF and W3C. How can these specifications best be used? What are the gaps that still need to be addressed? How can discovery be made secure and private, so that it doesn't disclose too much information and isn't susceptible to attacks? How can the semantic information that guides discovery be structured in a way that maximizes interoperability, in particular where usage needs to cross different IoT ecosystems? How can self-description and discovery be used to actually enhance security?

The Internet Research Task Force (IRTF) Thing to Thing Research group (T2TRG), and the Worldwide Web Consortium (W3C) Interest Group (IG) on the Web of Things (WoT) are meeting online for a workshop on self-description and discovery on Monday, June 08, 2020. The meeting was originally scheduled to take place physically in Helsinki, with the date chosen to coordinate with a number of other events, in particular the 20th International Conference on Web Engineering (ICWE 2020), which also was to take place in Helsinki, on Tuesday, June 09, to Friday, June 12. It is now taking place online, on the originally planned day, from 1200Z (12:00 UTC) to 1500Z.

Participation in the workshop is open to IoT developers and researchers free of charge, but we ask you to register by Monday June 1st, to help planning with the logistics: https://forms.gle/R33E7J3qM6nYLfQD8

Approximate Agenda

Webex: https://ietf.webex.com/ietf/j.php?MTID=m16cc27a1b70c01d7d0bad4ed65b637db

Time (UTC)	Subject	Who
1200Z	Welcome, Logistics	Chairs
1210Z	WoT Update	Michael McCool/Sebastian Käbisch
	Use Case Process and Overview	Michael Lagally
1220Z	Lifecycle	Michael Lagally
	Discussion
1250Z	WoT Discovery	Michael McCool
	Discussion
1320Z	--- Break ---
1340Z	WoT PoC Progress
	Retail	Michael McCool/David Ezell
	Smart City	Michael McCool/Jennifer Lin
1400Z	OneDM/TD Integration	Michael Koster/Sebastian Käbisch
	TD Templates; Modularity
	Discussion
1430Z	Hypermedia Controls in TDs and beyond (+ impact on RESTful design)	Victor Charpenay/Ege Korkan
	Actions and Events, Handling URLs
	Discussion
1500Z	Wrapup, end of meeting	Chairs

View workshop time in various timezones

Obtain calendar invitation file (.ics)

Notes: https://hackmd.io/@rZ9WNHJ6TqOz-lqUmJbbfA/SJVqXysnU

Freezer

Some topics will not fit into the 3-hour format necessitated by the online nature (which is already bursting at the seams). So we are likely to set up another joint meeting in the future.

Specifically, we would like to discuss formats and languages for data definition ("schema languages"), as they are used in various emerging IoT specifications where JSON-like generic data models are employed. We plan to invite authors of the relevant proposals and standards.

Collecting current and future T2TRG/WoT Workshop Topics

• Discovery
  • State, information, and metadata being discovered
  • Preserving privacy
    • Issues, i.e. Avoidance of fingerprinting in web browser
    • Two-phase protocol WoT proposal
    • Multiple actors, secret-handshake problem, authentication, authorization
  • Use of existing directory services, i.e.
    • CoRE RD/CoRAL
    • WoT Thing Directory/SPARQL/Keyword/Templates
  • Use of existing introduction mechanisms, i.e.
    • Eddystone beacons
    • mDNS/DNS-SD/Zeroconf
    • DHCP
    • QR/Barcodes/NFC (GS1)
  • New standards needed
    • Location-based DNS
  • Semantic discovery
    • ODM and other semantic schematics
    • Query languages (SPARQL, GRAPHQL, JSONPath (LinkSmart), XPath 3.1)
    • Data Modeling
      • Whither JSON Schema?
      • ODM
• Lifecycle
  • Onboarding
    • State and information being managed
    • Access control and authentication management
    • Interaction with existing ecosystems
    • Registration with directories for discovery
    • Relationship to discovery, mutual authorization problem
  • Information and Device states
    • RFC8576
    • WoT Architecture
  • Offboarding/decomissioning
    • How to deal with non-responsive devices?
    • Non-retrievable decommissioning vs. factory reset vs. maintenance updates