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Peer-to-peer collaboration system with edge routing

  • US 8,656,017 B2
  • Filed: 05/16/2007
  • Issued: 02/18/2014
  • Est. Priority Date: 05/16/2007
  • Status: Active Grant
First Claim
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1. A method of joining a computing device that is behind a Network Address Translation (NAT) device to a peer-to-peer collaboration session which includes a plurality of peers, the method comprising:

  • communicating, by the computing device, with a home relay server to discover a type of the NAT device;

    determining, by the computing device based on the type of the NAT device, an address vector of the computing device that can be used by the peers of the peer-to-peer collaboration session for traversing the NAT device and directly transmitting messages to the computing device without use of the home relay server;

    communicating, by the computing device, the address vector of the computing device to the home relay server for sharing the address vector of the computing device with the peers of the peer-to-peer collaboration session;

    receiving, by the computing device from the home relay server, address vectors of the peers of the peer-to-peer collaboration session;

    receiving, by the computing device from the home relay server, a list of peers that have established direct connections to other peers of the peer-to-peer collaboration session; and

    constructing, by the computing device, a routing table based on the address vectors of the peers of the peer-to-peer collaboration session and the list of peers that have established direct connections to other peers of the peer-to-peer collaboration session, the routing table comprising;

    a first group representing peers of the peer-to-peer collaboration session to which the computing device can directly transmit messages without the use of the home relay server, the first group including at least one peer designated as a first super peer by the home relay server, wherein the first super peer is configured to;

    receive messages comprising collaboration information from the computing device via direct peer-to-peer transmission; and

    forward the messages to other peers in the first group with which the first super peer has established a direct connection; and

    a second group representing peers of the peer-to-peer collaboration session to which the computing device can indirectly transmit messages through the home relay server, the second group including at least one peer designated as a second super peer by the home relay server, wherein the second super peer is configured to;

    receive messages comprising collaboration information from the computing device via indirect transmission through the home relay server; and

    forward the messages to other peers in the second group with which the second super peer has established a direct connection.

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