21. P2P networks are only as useful as their Resource
Discovery capabilities remain efficient when they scale up
22. P2P Overlay Networks primary focus
is not to find a peer, it is to find a resource.
Peers are ephemeral, resources should be
permanent and discoverable.
25. • march 2000, Justin Frankel and Tom Pepper
• topology is completely random
• routing and search using flooding with TTL
and hop counter
• really slow
• lot’s of signalling traffic
36. • DHT
• Highly scalable
• Each node only knows of m number of other nodes
• Each node has a unique identifier
• Each node is responsible for a segment of the data
• Ids are 160 bits (SHA-1 for Uniform Distribution)
• CHORD is awesome
43. start interval sucessor
start(k) = (n+2k-1) mod 2m, 1 ≤ k ≤ m
interval(k) = start(k) = start(k+1)
sucessor - first node after start(k)
n - ID of the peer
m - number of bits used
k - row number
53. • Chord inspired P2P overlay network
designed for the Web Platform
• Uses CHORD routing scheme
• Uses WebRTC for transport
• WebSockets for Signalling
• Peers (browsers) route messages amongst
them
• 48 bits Ids
• Brings a full DHT to the browser
WEBRTC-EXPLORER
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