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Inventing the Post-Web World
The O'Reilly Peer-to-Peer and
Web Services Conference

Washington, D.C. -- November 5-8, 2001


Next Generation P2P Content Networks - Syndicating the Dark Matter

Ram Sadasiv, Chief Technology Officer, quantumStream

Track: File Sharing
Date: Wednesday, November 07
Time: 11:15am - 12:00pm
Location: Dupont

A content network enables the description, discovery, and distribution of discrete pieces of information between providers and consumers. The web as a content network assumes static, always on content providers. First generation peer to peer content networks address the issue of occasionally connected and mobile content providers, but assume highly redundant static content. Next generation content networks must address the issue of unique and dynamic content on occasionally connected and mobile content providers. Examples of these applications include: replicating schedule information between various Palm Pilots, syndicating the Great American Novel in serialized form as I write it on my pc-tablet, or using my digital camera to distribute a daily picture of the street outside my cigar store.

To build these types of applications requires a store and forward messaging architecture to negotiate presence, and the ability to redirect requests from logical addresses to physical addresses. Presence and address negotiation will be implemented by tunneling Gnutella's host catching messages over Jabber's Instant Messaging protocol the availability and current addresses of both client and server are resolved, and then dropping the remaining transfer back into a standard Gnutella conversation. In addition, we will look at bandwidth usage and security enhancements which become possible using this architecture.

This session will cover proposed changes to the Gnutella 0.4 protocol, incorporating the LimeWire MetaData proposal (; altering the clip2 reflector/proxy implementation (, to cache content listings even when the resource is offline; and modifying the implementation of the Gnutella servent, incorporating Jabber client functionality. It will cover the modifications to the Gnutella servent in some detail, including source code examples. Home | Conferences Home | P2P & Web Services Home
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