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

XDI TC Agenda

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

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

THE LINK TO THIS AGENDA AND LIVE MEETING MINUTES IS:

https://docs.google.com/document/d/1t5Mx0ITqJdLwo8wM5GD9lcqehgbgnrhk-k2sERwc7J0/edit

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IRC Channel: irc://irc.freenode.net:6667/xdi
AGENDANEWS & UPDATESPRESENTATIONS/DISCUSSIONSReport from XDI Editors Subcommitteehttps://wiki.oasis-open.org/xdi/XdiOneSpecshttps://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.