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Peer to Peer
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Peer to Peer: Harnessing the Power of
Disruptive Technologies
Andy Oram (editor)
First Edition March 2001
ISBN: 0-596-00110-X, 448 pages
This book presents the goals that drive the developers of the best-known
peer-to-peer systems, the problems they've faced, and the technical
solutions they've found.
The contributors are leading developers of well-known peer-to-peer
systems, such as Gnutella, Freenet, Jabber, Popular Power,
SETI@Home, Red Rover, Publius, Free Haven, Groove Networks, and
Reputation Technologies.
Topics include metadata, performance, trust, resource allocation,
reputation, security, and gateways between systems.
Table of Contents
Preface
1
Andy Oram
Part I. Context and Overview
1. A Network of Peers: Models Through the History of the Internet
8
Nelson Minar and Marc Hedlund
2. Listening to Napster
19
Clay Shirky
3. Remaking the Peer-to-Peer Meme
29
Tim O'Reilly
4. The Cornucopia of the Commons
41
Dan Bricklin
Part II. Projects
5. SETI@home
45
David Anderson
6. Jabber: Conversational Technologies
51
Jeremie Miller
7. Mixmaster Remailers
59
Adam Langley
8. Gnutella
62
Gene Kan
9. Freenet
80
Adam Langley
10. Red Rover
86
Alan Brown
11. Publius
93
Marc Waldman, Lorrie Faith Cranor, and Avi Rubin
12. Free Haven
102
Roger Dingledine, Michael J. Freedman, and David Molnar
Table of Contents (cont...)
Part III. Technical Topics
13. Metadata
121
Rael Dornfest and Dan Brickley
14. Performance
128
Theodore Hong
15. Trust
153
Marc Waldman, Lorrie Faith Cranor, and Avi Rubin
16. Accountability
171
Roger Dingledine, Michael J. Freedman, and David Molnar
17. Reputation
214
Richard Lethin
18. Security
222
Jon Udell, Nimisha Asthagiri, and Walter Tuvell
19. Interoperability Through Gateways
239
Brandon Wiley
Afterword
247
Andy Oram
Appendices
Appendix A: Directory of Peer-to-Peer Projects
250
Appendix B: Contributors
253
Interview with Andy Oram
256
Description
The term "peer-to-peer" has come to be applied to networks that expect end users to contribute their
own files, computing time, or other resources to some shared project. Even more interesting than the
systems' technical underpinnings are their socially disruptive potential: in various ways they return
content, choice, and control to ordinary users.
While this book is mostly about the technical promise of peer-to-peer, we also talk about its exciting
social promise. Communities have been forming on the Internet for a long time, but they have been
limited by the flat interactive qualities of email and Network newsgroups. People can exchange
recommendations and ideas over these media, but have great difficulty commenting on each other's
postings, structuring information, performing searches, or creating summaries. If tools provided ways
to organize information intelligently, and if each person could serve up his or her own data and
retrieve others' data, the possibilities for collaboration would take off. Peer-to-peer technologies along
with metadata could enhance almost any group of people who share an interest--technical, cultural,
political, medical, you name it.
This book presents the goals that drive the developers of the best-known peer-to-peer systems, the
problems they've faced, and the technical solutions they've found. Learn here the essentials of peer-to-
peer from leaders of the field:
Nelson Minar and Marc Hedlund of Popular Power , on a history of peer-to-peer
Clay Shirky of acceleratorgroup , on where peer-to-peer is likely to be headed
Tim O'Reilly of O'Reilly & Associates , on redefining the public's perceptions
Dan Bricklin , cocreator of Visicalc , on harvesting information from end-users
David Anderson of SETI@home , on how SETI@Home created the world's largest
computer
Jeremie Miller of Jabber , on the Internet as a collection of conversations
Gene Kan of Gnutella and GoneSilent.com , on lessons from Gnutella for peer-to-peer
technologies
Adam Langley of Freenet , on Freenet's present and upcoming architecture
Alan Brown of Red Rover, on a deliberately low-tech content distribution system
Marc Waldman , Lorrie Cranor , and Avi Rubin of AT&T Labs , on the Publius project
and trust in distributed systems
Roger Dingledine , Michael J. Freedman , and David Molnar of Free Haven , on
resource allocation and accountability in distributed systems
Rael Dornfest of O'Reilly Network and Dan Brickley of ILRT/RDF Web, on metadata
Theodore Hong of Freenet , on performance
Richard Lethin of Reputation Technologies , on how reputation can be built online
Jon Udell of BYTE and Nimisha Asthagiri and Walter Tuvell of Groove Networks ,
on security
Brandon Wiley of Freenet , on gateways between peer-to-peer systems
You'll find information on the latest and greatest systems as well as upcoming efforts in this book.
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