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VP - IMPP

VP - IMPP. Virtual Presence CoBrow Instant Message Persistent Presence. Klaus H. Wolf Cyland AG / Ulm University wolf@ cyland. com. Virtual Presence. The Web seems to be lifeless But there are people VP makes people visible Meeting people on the Web. Function.

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VP - IMPP

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  1. VP - IMPP Virtual Presence CoBrow Instant Message Persistent Presence Klaus H. Wolf Cyland AG / Ulm University wolf@cyland.com

  2. Virtual Presence • The Web seems to be lifeless • But there are people • VP makes people visible • Meeting people on the Web

  3. Function • Users move through the web • VP server computes virtual neighbors • VP client displays neighbors

  4. Welcome to www.full-volume.com! There are 13 users on these pages,take your time to check things out. VP Display • VP client displays peers

  5. VP Infrastructure • Client based • VP clients supply information • Server based • Document servers supply information • Installation of VP components • Network based • ISP supplies VP data

  6. Federated Servers • VP to cover a large part of the Web • Multiple VP servers • Virtual Presence across server borders

  7. Persistent Presence • Users want to • know if you can be reached • (active homepage example) • know how to reach you • tell how they want to be reached • dynamically, automatically

  8. Presence System • User Proxy • persistant access point • hide details Presence System ROW User

  9. Presence Information GET online-state for kermit Caller is online forIM and telephone GET IM-address im://aol.com/kermit SEND IM to kermit IM service @ AOL IM

  10. Presence Servers aol.com im://aol.com/frog/kermit client-server im://frog.com/kermit frog.com im://kermit.frog.com/ kermit.frog.com peer-peer

  11. VP & PP • VP client shows information on virtual neighbors • PP client shows information on buddies • Information bits: • Name, icon • Online status, contact address • Location • PP is a subset of VP

  12. Notes on IMPP • Technical discussion • PIDF (XML or not) • PITP (TCP vs. UDP, WAP) • Addressing (URL vs. email) • Substrate (SMTP, HTTP, SIP) • Client-server vs. server backbone • Authentication, spamming • Missing working de-facto standard

  13. IMPP status • At least 2 months behind schedule • IMPP drafts out • Private proposals out • IETF put IMPP to sleep (dormant) • Slow progress • Waiting for new ideas, new people • Stepping back and re-thinking • AD expect proposals by June 15 • Danger: IMPP Forum

  14. Security • Everymessage must be authenticated • Public key authentication • PKIX (IETF) signature verification

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