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Henning Schulzrinne Columbia University with V. Gurbani, P. Kyzivat, J. Rosenberg

Rich presence: RPID, CIPID, future-presence draft-ietf-simple-rpid draft-ietf-simple-cipid draft-ietf-simple-future. Henning Schulzrinne Columbia University with V. Gurbani, P. Kyzivat, J. Rosenberg. Issues. Changes since last IETF Open issues RPID: none CIPID: <card>

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Henning Schulzrinne Columbia University with V. Gurbani, P. Kyzivat, J. Rosenberg

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  1. Rich presence: RPID, CIPID, future-presencedraft-ietf-simple-rpiddraft-ietf-simple-cipiddraft-ietf-simple-future Henning Schulzrinne Columbia University with V. Gurbani, P. Kyzivat, J. Rosenberg SIMPLE - IETF 59 (Seoul)

  2. Issues • Changes since last IETF • Open issues • RPID: none • CIPID: <card> • future-status: model, past only? SIMPLE - IETF 59 (Seoul)

  3. Changes since last IETF • Split into three documents: • RPID: <activity>, <class>, <contact-type>, <idle>, <placetype>, <privacy>, <relationship>, <sphere> • CIPID: <card>, <homepage>, <icon>, <map>* • future-status • Changed <idle>* • <idle since=“2004-02-28T18:02:15Z”/> • Finalized ‘since’ and ‘until’ mechanism for RPID • describes validity of elements • must bracket tuple timestamp (present) • Updated schemas* *since cut-off SIMPLE - IETF 59 (Seoul)

  4. CIPID: <card> vs. <homepage> ? • <card> contains URL to vCard or LDIF • vCard contains homepage URL (url:) • duplicates <homepage> element • but not all <card> elements may allow this • awkward if only the homepage is to be conveyed • need data: URL with lots of syntactical noise • recommendation: leave both since possible duplication is harmless SIMPLE - IETF 59 (Seoul)

  5. CIPID: by value or by reference ? • Currently, only reference to vCard or LDIF record • Can include by value using data: URL or MIME URLs (mid:) • MIME URLs are awkward since they require that CPIM message is multipart-MIME capable – specified? • But reference more bandwidth-friendly if repeated in each NOTIFY • CPIM model seems to favor full state • can use partial updates to avoid problem SIMPLE - IETF 59 (Seoul)

  6. CIPID: by value or by reference ? • Solution 0: • make do with data: and mid: • Solution 1: <card type=“text/url”>http://foo.com”</card> • Solution 2: <cardurl>http://foo.com</cardurl> <card type=“MIME type”>vcard or LDIF data</card> SIMPLE - IETF 59 (Seoul)

  7. * used to be called timed-status future-status* • RPID can indicate time ranges, but must be valid at <timestamp> (~ present) • otherwise, plain PIDF implementations would misinterpret historical or future status as present status • Useful to have a separate mechanism to indicate predicted presence value • e.g., from calendar information or sensor • allows watcher to plan communication • allows coordination: “when is everyone likely to be available in the next few hours?” SIMPLE - IETF 59 (Seoul)

  8. future-status • Should we add <past-status> or allow <future-status> to handle this? Yes • Useful if only old information is available, but it’s better than no information • “was on AA167 until three hours ago” <future-status from=“2004-08-15T10:20:00” until=“2004-08-16T08:19:00”> <basic>closed</basic> {all other PIDF and RPID elements} </future-status> ? SIMPLE - IETF 59 (Seoul)

  9. Conclusion • Believed to be ready for WG last call after one more round • but may need to define semantic policy rules for RPID, CIPID and future-status • Current solutions for open issues are workable and we could add suggestions later • <past-status> • <card> value SIMPLE - IETF 59 (Seoul)

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