CS5412: TORRENTS AND TIT-FOR-TAT

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14 End-host multicast using single tree Source <strong>CS5412</strong> Spring 2012 (Cloud Computing: Birman) Slow data transfer
15 End-host multicast using single tree Tree is “push-based” – node receives data, pushes data to children Failure of “interior”-node affects downloads in entire subtree rooted at node Slow interior node similarly affects entire subtree Also, leaf-nodes don’t do any sending! Though later multi-tree / multi-path protocols (Chunkyspread (2006), Chainsaw (2005), Bullet (2003)) mitigate some of these issues <strong>CS5412</strong> Spring 2012 (Cloud Computing: Birman)
Page 1 and 2: Lecture VI CS5412: TORRENTS AND TIT
Page 3 and 4: 3 The basic BitTorrent Scenario Mi
Page 5 and 6: 5 Source Router “Interested” En
Page 7 and 8: 7 Client-Server Source Router “In
Page 9 and 10: 9 End-host based multicast Source R
Page 11 and 12: 11 End-host based multicast Also c
Page 13: 13 End-host multicast using single
Page 17 and 18: 17 BitTorrent Swarm Swarm Set of
Page 19 and 20: Peer How a node enters a swarm for
Page 21 and 22: Peer How a node enters a swarm for
Page 23 and 24: 23 Terminology Seed: peer with the
Page 25 and 26: 25 Choosing pieces to request Rand
Page 27 and 28: 27 Tit-for-tat as incentive to uplo
Page 29 and 30: 29 Why BitTorrent took off Better
Page 31 and 32: 31 Pros and cons of BitTorrent Pro
Page 33 and 34: 33 Pros and cons of BitTorrent Dep
Page 35 and 36: 35 Prior to Netflix “explosion”
Page 37 and 38: 37 Example finding from a recent st
Page 39 and 40: 39 Basic strategy They assume cryp
Page 41 and 42: 41 Obvious concern: Failed key exch
Page 43 and 44: 43 Insights gained? Collaborative

CS5412: TORRENTS AND TIT-FOR-TAT

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