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VP - IMPP. Virtual Presence CoBrow Instant Message Persistent Presence. Klaus H. Wolf Cyland AG / Ulm University [email protected] 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

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-state for 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
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