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Peer-to-Peer Protocol (P2PP)

Peer-to-Peer Protocol (P2PP). Binary-based, type-length-value (TLV) objects No DHT specific detail Simple state-machine each request generates a response Request routing recursive vs. iterative parallel requests Transport TCP vs. UDP links between peers API. P2PP Functionality.

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Peer-to-Peer Protocol (P2PP)

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  1. Peer-to-Peer Protocol (P2PP) • Binary-based, type-length-value (TLV) objects • No DHT specific detail • Simple state-machine • each request generates a response • Request routing • recursive vs. iterative • parallel requests • Transport • TCP vs. UDP • links between peers • API

  2. P2PP Functionality • DHT commonalities, performance enhancements are incorporated in the protocol • Capabilities (such as b/w, connection state) exchange • Logical separation for • overlay maintenance • resource manipulation • diagnostics • Overlay maintenance • join, leave, keep-alive, routing-peer-lookup, replicate, update, query • Resource manipulation • insert, lookup, remove

  3. To SIP or not to SIP • SIP guidelines document allows to register AOR but not a service • STUN or TURN service • Bandwidth estimation service • Overlay maintenance is an active operation • Nodes come and go • Routing-neighbor information needs to be exchanged • SIP is not a distributed system maintenance protocol • Overloading meaning of SIP headers is not a good practice

  4. Definitions • Resource vs. service • Peer vs. client

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