Agenda: XDI TC Telecon Friday 09:00 - 10:30AM PT 2015-01-30

[Markus Sabadello <markus.sabadello@xdi.org>]

XDI TC Agenda

Following is the agenda for the unofficial telecon of the XDI TC at:

Date:  Friday, 30 January 2015 USA
Time:  09:00AM - 10:30AM Pacific Time (16:00-17:30 UTC)

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AGENDA

NEWS & UPDATES

PRESENTATIONS/DISCUSSIONS

Report from XDI Editors Subcommittee

https://wiki.oasis-open.org/xdi/XdiOneSpecs

https://github.com/OASIS-XDI-Technical-Committee/xdi-spec-docbook

JSON Triples Serialization Format

We’ll review a new proposed serialization format posted by Drummond that combines features of the flat and the tree formats.

https://wiki.oasis-open.org/xdi/XdiTriplesSerialization

Visual Graph Notation Format

Drummond would like to briefly review his suggested revision.

https://lists.oasis-open.org/archives/xdi/201501/msg00013.html

Websocket Binding

Markus will show a proof-of-concept of a Websocket binding. There are several topics to discuss:

• Is there agreement that we should publish a Websocket binding? In which spec?

• Will this require defining more about the $copy operation? In which spec?

• What will push (pub/sub) connections require in terms of additional link contract semantics?

Clarification of XDI Root Node Syntax

Drummond wants to clarify (and simplify) root node syntax in the ABNF so that parentheses only surround single arcs as they do with attributes, collections, variables, etc. For an example see the XDI Discovery page:

https://wiki.oasis-open.org/xdi/XdiDiscovery

XDI Policy and Connections

Let’s continue to discuss XDI connection requests, connection invitations, link contracts, templates, community contracts, requester contracts, etc.

Open topics:

• Review what happens when a connection invitation is processed.

• What do “deferred” connection requests look like, and how are they processed? How do we handle cases where user interaction is required?

• Template versioning - what if the Template Authority changes a template? How does this affect existing LC instances? Should versioning for LC templates be mandatory?

Topics discussed previously:

• Discuss different ways for an RA to receive a copy of a new link contract instance

• Challenge of correlating message requests and responses

• Issue related to having multiple link contract instances based on one link contract template (how to algorithmically determine the address?)

• Insight: A link contract instance may be used by many authorities that can satisfy a policy _expression_ (e.g. groups, roles, organization membership)

• Insight: Just like there can be a connection invitation, there can also be invitations for any other operation, e.g. $get

Collection of Documents:

XDI Policy draft spec:

https://www.oasis-open.org/committees/download.php/54276/XDIPolicyDraft%20v8.docx

XDI Connections draft spec:

https://www.oasis-open.org/committees/download.php/54279/XDI%20Connections%20V1.docx

Link Contract Instantiation:

https://www.oasis-open.org/committees/download.php/54205/LinkContractInstantiation25Sep2014.pdf

Community Link Contracts:

https://www.oasis-open.org/committees/download.php/54287/Community%20link%20contracts%20-%20Google%20Docs.pdf

Berkeley Deep Dive notes:

https://www.oasis-open.org/committees/download.php/53986/xdi%20deep%20dive%202014-8-27.pdf

https://www.oasis-open.org/committees/download.php/53985/linkcontractExamples.pdf

Transactional integrity

We have discussed the topic of transactional integrity a number of times in the past without reaching a conclusion. This seems to now have new relevance in conjunction with link contract instantiation.

The following document has a section titled “XDI Message Transactional Integrity Notes”, let’s review and discuss:

https://www.oasis-open.org/committees/download.php/53921/LinkContractInstantiation17Aug2014.pdf

NEXT CALL

The next call is next week at the regular time.