Information security – Access control or authentication – Network
Reexamination Certificate
2005-06-21
2009-11-10
Zand, Kambiz (Department: 2434)
Information security
Access control or authentication
Network
C709S227000, C709S228000, C709S229000
Reexamination Certificate
active
07617525
ABSTRACT:
A system and method for conducting a client-server application (e.g., instant messaging, VOIP telephony) using non-persistent communications. Clients issue periodic heartbeat messages to a connectionless server using a non-persistent (e.g., UDP) communication protocol. The heartbeat messages identify the clients by unique client identifiers. When an application server has an unsolicited communication for a client (e.g., a new instant message, a new VOIP call), the application server retrieves the client's address from the connectionless server if it does not already have the address. The application server forwards the unsolicited communication to the client via a non-persistent communication, and may spoof the connectionless server if necessary to reach the client through a firewall, proxy, NAT or similar entity. Clients that cannot use non-persistent protocols establish persistent connections with a client manager. The client manager issues heartbeat messages to the connectionless server and receives and forwards unsolicited communications for these clients.
REFERENCES:
patent: 5548589 (1996-08-01), Jeon et al.
patent: 6397253 (2002-05-01), Quinlan et al.
patent: 6674758 (2004-01-01), Watson
patent: 6717949 (2004-04-01), Boden et al.
patent: 6925487 (2005-08-01), Kim
patent: 7020687 (2006-03-01), Mooney et al.
patent: 7080151 (2006-07-01), Borella et al.
patent: 7089281 (2006-08-01), Kazemi et al.
patent: 7274684 (2007-09-01), Young et al.
patent: 2002/0138622 (2002-09-01), Dorenbosch et al.
patent: 2003/0009561 (2003-01-01), Sollee
patent: 2004/0083386 (2004-04-01), Marquet et al.
patent: 2006/0179147 (2006-08-01), Tran et al.
Goode, “Voice Over Internet Protocol (VoIP)”, Sep. 2002, IEEE, pp. 1495-1517.
Brown Wendell
Moeck Andrew
Alto Ventures, Inc.
Park Vaughan & Fleming LLP
Powers William S
Zand Kambiz
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