Social Network Swarms in P2P

1
Social Network Swarms in P2P

• Sadek Ali Wael Aboelsaadat
• Presented by Sadek Ali
• CSC2231

2
Background

• P2P
• Anonymous environment
• File transfer / sharing
• Convenience
• OSN
• Friend environment
• Communication / Search
• Privacy in cliques
• Existing P2P / OSN Mashup
• Focuses on access controls to content

A
B
D
C
3
Research Question

• Problem
• Availability
• Why is it a problem ?
• P2P is biased for popular content
• OSN content is popular within a limited audience
  (i.e., unpopular)
• Solution
• Make copies (seeds) of content in P2P network
• Make OSN content more popular by affiliating it
  to popular content
• Increases availability of unpopular content

4
Social Swarming

• Transfer content between two friends in an
  anonymous P2P network
• Friends are authenticated externally in P2P
  through OSN
• Exchange the download of popular content for
  upload of unpopular content
• Assumes that popular content is readily available
• Maintain privacy and convenience

5
Social Swarming System
Anonymous
BT Client
Friend
BT Tracker/Client
Contract
Popular Torrent
Unpopular Torrent
Friend
BT Client
Overhead
Contract Agreement to upload a torrent between
two friends. Contract is fulfilled when both
friends are seeders. Anonymous users should
download /upload overhead of unpopular
6
System Design
FACEBOOK
1
4
Friend
CONTRACT MANAGER
2
Anonymous
5
BTP CLIENT
PERSONAL TRACKER
3
BTP CLIENT
BTP CLIENT

• POST CONTRACT
• FRIEND ACCEPTS DEAL
• FRIEND INITIATES UNPOPULAR SWARM
• ANONYMOUS FINDS DEAL
• ANONYMOUS JOINS UNPOPULAR AND POPULAR SWARMS

Friend
7
Demo

• Tracker
• Modified ANNOUNCE handler to enforce contracts
• Big change All-or-one peer selection
• OSN
• FaceBook application with Contract Manager
• Uses first downloader as Friend
• P2P
• BT Clients are unmodified

8
Conclusion

• Overall
• Very difficult to balance upload / download
• System requires development of better peer
  selection schemes
• P2P Protocol
• Requires a PWP message for authentication of
  Friends
• OSN
• FaceBook application should query into Friends
  network