SOSIMPLE P2P Instant Messaging and Communication

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SOSIMPLEP2P Instant Messaging and Communication

• David A. Bryan
• November 25, 2003

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Motivation

• Most current instant messenger and
  telecommunications protocols send all information
  through central server
• Can purchase commercial IM servers, or use IM
  protocols such as SIMPLE or Jabber. For
  communications, can use softswitch
• These still require a central proxy server
• Would be nice to have a system that requires no
  central server to communicate
• SIP/SIMPLE look like the ideal candidate

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SIP/SIMPLE

• SIP (Session Initiation Protocol)
• IETF standard for setting up communication
  sessions
• In practice, used for VoIP
• SIMPLE (SIP Instant Messaging and Presence
  Leveraging Extensions)
• IETF standard using and based on SIP to allow for
  sending of text instant messages
• Along with Jabber, being proposed as an open
  replacement for AIM, Yahoo, etc.

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SIP/SIMPLE

• Both protocols use one or more central servers,
  called proxies, to control the signaling for a
  session, but media is streamed directly between
  nodes
• Servers primarily used for location management
  it is possible to simply point two SIP/SIMPLE
  devices at each other and talk
• Self Organizing SIMPLE SOSIMPLE

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SIP/SIMPLE Call
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SOSIMPLE Call
P2P Namespace
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Project Goal

• Evaluate possibility of implementing explore
  problems
• Message transmit problems? Where does it require
  a proxy?
• Security joining w/someone else id?
• Evaluate candidates for software to modify
• Present structure and design to implement
• Possibly some initial implementation