System and method for maintaining a network connection

Details System and method for maintaining a network connection System and method for maintaining a network connection

2004-02-25

2008-09-16

Duong, Oanh (Department: 2155)

Electrical computers and digital processing systems: multicomput

Computer-to-computer protocol implementing

Computer-to-computer data transfer regulating

C709S203000, C709S218000, C709S224000, C709S225000, C709S228000, C709S250000

Reexamination Certificate

active

07426569

ABSTRACT:
A system and method for maintaining a persistent connection is provided. In an embodiment, a system includes a client that connects to a web-server via a physical link that is bandwidth-constrained. The physical link also includes at least one network address translation (“NAT”) router that is configured to terminate idle connections between the client and the web-server. The client is configured to send keep-alive packets to the web-server in order to reduce the likelihood of the NAT router terminating the connection. The keep-alive packets are sent on a variable basis that is intended to reduce bandwidth consumption while ensuring that the NAT router does not deem the connection idle and terminate the connection.

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