Lecture 5
Middleware: Peer-to-Peer Computing
Wireless and Mobile Systems Design
Lecture Objectives
Describe the basic functionality provided by middleware for peer-to-peer (P2P) computing
Describe some current standards for service discovery and delivery
Introduce the use of Universal Plug and Play (UPnP) for P2P application development
Resources
S. Helal, "Standards for service discovery and delivery," IEEE Pervasive Computing, Vol. 1, No. 3, pp. 95-100, July-Sept. 2002.
Jini Forum, at http://www.jini.org/.
Service Location Protocol Working Group (svrloc), at http://www.ietf.org/html.charters/svrloc-charter.html.
UPnP Forum, at http://www.upnp.org/
UPnP Forum, "Universal Plug and Play Device Architecture," available at http://www.upnp.org/resources/documents.asp.
Intel, "UPnP Technology," available at http://www.intel.com/technology/UPnP/.
Agenda
Key functions in peer-to-peer networking
Automatic configuration
Service discovery
Service delivery
Examples of standards and systems for service discovery and delivery
Jini, Service Location Protocol (SLP), and UPnP
Universal Plug and Play (UPnP)
Service Discovery Scenarios (1)
You are in a taxi without your wallet…
Your cell phone "sees" a service of the Anytown Cab Service
The phone "downloads" an electronic payment application to your cell phone that you use to pay your fare
You bring a handheld to a client site to show your company's new products and options…
Your handheld "discovers" a printer service when you step into the client's office
You are able to print the document that is customized to your client's needs
Service Discovery Scenarios (2)
You bring an iPAQ loaded with a PowerPoint file to a meeting…
Your iPAQ "discovers" that there is an intelligent projector in the room
You "upload" the PowerPoint file stored on your iPAQ to the projector

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