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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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Vp impp

VP - IMPP

Virtual Presence

CoBrow

Instant Message

Persistent Presence

Klaus H. Wolf

Cyland AG / Ulm University

[email protected]


Virtual presence

Virtual Presence

  • The Web seems to be lifeless

  • But there are people

  • VP makes people visible

  • Meeting people on the Web


Function

Function

  • Users move through the web

  • VP server computes virtual neighbors

  • VP client displays neighbors


Vp display

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


Vp infrastructure

VP Infrastructure

  • Client based

    • VP clients supply information

  • Server based

    • Document servers supply information

    • Installation of VP components

  • Network based

    • ISP supplies VP data


Federated servers

Federated Servers

  • VP to cover a large part of the Web

  • Multiple VP servers

  • Virtual Presence across server borders


Persistent presence

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


Presence system

Presence System

  • User Proxy

    • persistant access point

    • hide details

Presence

System

ROW

User


Presence information

Presence Information

GET online-statefor kermit

Caller

is online forIM and telephone

GET IM-address

im://aol.com/kermit

SEND IM to

kermit

IM service

@ AOL

IM


Presence servers

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


Vp pp

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


Notes on impp

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


Impp status

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


Security

Security

  • Everymessage must be authenticated

  • Public key authentication

  • PKIX (IETF) signature verification


  • Login