Method of maintaining a peer-to-peer relay network

• US 7,792,968 B2
• Filed: 08/28/2007
• Issued: 09/07/2010
• Est. Priority Date: 10/20/2003
• Status: Active Grant

• Current Assignee: Sony Interactive Entertainment LLC (Sony Group Corp.)
• Original Assignee: Sony Computer Entertainment America LLC (Sony Group Corp.)
• Inventors: Datta, Glen Van, Mai, Anthony
• Primary Examiner(s): Osman; Ramy M
• Application Number:
  US11/895,968
• Publication Number:
  US 20080046554A1
• Time in Patent Office: 1,106 Days
• Field of Search: 709/223, 709/225, 709/227, 709/238, 709/224, 709/226, 709/243, 709/244
• US Class Current: 709/226
• CPC Class Codes: A63F 2300/408 Peer to peer connection
• CPC Class Codes: A63F 2300/572 Communication between players during game play of non game information, e.g. e-mail, chat, file transfer, streaming of audio and streaming of video
• CPC Class Codes: H04L 45/02 Topology update or discovery
• CPC Class Codes: H04L 45/42 Centralised routing
• CPC Class Codes: H04L 67/104 Peer-to-peer [P2P] networks
• CPC Class Codes: H04L 67/1046 Joining mechanisms
• CPC Class Codes: H04L 67/1048 Departure or maintenance mechanisms
• CPC Class Codes: H04L 67/1055 involving connection limits involving dynamic management of active down- or uploading connections H04L67/1085
• CPC Class Codes: H04L 67/1091 Interfacing with client-server systems or between P2P systems

Abstract

A method of maintaining a peer-to-peer relay network includes sending a maintenance message from a peer computer system to each of one or more connected peer computer systems connected to the peer computer system and evaluating any responses received from the one or more connected peer computer systems. The connection between the peer computer system and a connected peer computer system is closed when the response from that connected peer computer system is not acceptable. Each peer computer system is connected to a number of other peer computer systems that is less than or equal to a connection limit and each peer computer system is configured to relay data to peer computer systems connected to that peer computer system according to a set of one or more relay rules.

Claims

1. A method of maintaining a peer-to-peer relay network, comprising:

sending a maintenance message from a peer computer system to each of one or more connected peer computer systems connected to said peer computer system in a peer-to-peer relay network;

evaluating any responses received from said one or more connected peer computer systems;

determining the connection between said peer computer system and a connected peer computer system is a failed connection when the response from that connected peer computer system is not acceptable;

sending, in response to determining a failed connection, a close connection request message to the connected peer computer system;

closing the connection between the peer computer system and a connected peer computer system when a confirmation is received from the connected peer computer system, and

in response to closing the connection, sending a connection available message to other peers in the peer-to-peer relay network,

wherein when the peer-to-peer network is connected to a server, sending the connection available message to the server,

wherein each peer computer system is connected to a number of other peer computer systems that is less than or equal to a connection limit and each peer computer system stores a set of one or more relay rules for relaying data to the other peer computer systems connected to that peer computer system.

2. The method of claim 1, wherein:

said maintenance message is a ping message.

3. The method of claim 1, wherein:

a response from a connected peer computer system is not acceptable if the response is not received by said peer computer system within a time limit.

4. The method of claim 1, wherein:

a response is considered not acceptable if the response is not received.

5. The method of claim 1, wherein:

a response from a connected peer computer system is considered not acceptable if said peer computer system has not received a response from that connected peer computer system within a time limit multiple times.

6. The method of claim 1, further comprising:

sending a connection status request to a server for a connection between said peer computer system and a connected peer computer system if the response from that connected peer computer system is not acceptable.

7. The method of claim 1, further comprising:

sending an update to a server indicating a connection has been closed for each connection closed by said peer computer system.