The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2009
Filed:
Sep. 12, 2003
Brian D. Petry, San Diego, CA (US);
Fazil Ismet Osman, Escondido, CA (US);
Brian D. Petry, San Diego, CA (US);
Fazil Ismet Osman, Escondido, CA (US);
Astute Networks, Inc., San Diego, CA (US);
Abstract
A method and apparatus for facilitating failover of a stateful protocol connection is disclosed herein. The disclosed method includes receiving data sent by a first external entity in accordance with the stateful protocol connection. Acknowledgment of receipt of the data is withheld until a predefined operation involving the data has been performed. The method further includes transferring state information relating to the stateful protocol connection to a standby system. Once the predefined operation involving the data has been performed, the acknowledgment of receipt of the data is sent to the first external entity. This enables the stateful protocol connection to be failed over to the standby system with minimal or any data loss. In a particular implementation the predefined operation comprises committing the data to an application and receiving a send acknowledgment command from the application. In other implementations the predefined operation may comprise sending the data to a host entity and receiving confirmation that it has been received at the host.