Electrical computers and digital processing systems: multicomput – Computer-to-computer protocol implementing – Computer-to-computer data streaming
Reexamination Certificate
2011-05-31
2011-05-31
Jean, Frantz B (Department: 2454)
Electrical computers and digital processing systems: multicomput
Computer-to-computer protocol implementing
Computer-to-computer data streaming
Reexamination Certificate
active
07953883
ABSTRACT:
Techniques are provided herein for failover streaming mechanisms. At a first device (e.g., a content router device) that is configured to interface with a plurality of streaming servers for real-time protocol packet streams, communications are configured with a client device and a first of the plurality of streaming servers associated with a streaming session from the first streaming server to the client device so that the first device receives client session control and session feedback messages associated with the streaming session and so that a packet stream associated with the streaming session transmitted by the first streaming server to the client device does not pass through the first device. The first device stores session state information comprising an address of the client device, streaming session identification information and data representing a current state of the streaming session at the client device derived from the client session control and session feedback messages. Upon detecting a failure of the first streaming server, the first device selects a second of the plurality of streaming servers for serving the streaming session previously served by the first streaming server, and then initiates a streaming session from the second streaming server to the client device in order to continue from a state of the streaming session previously served by the first streaming server prior to the failure without any indication at the client device of the switching from the first streaming server to the second streaming server.
REFERENCES:
patent: 2005/0091190 (2005-04-01), Klemets
patent: 2006/0248212 (2006-11-01), Sherer et al.
Koroth Dipak Punnoran
Thomas Anil
Viveganandhan Mahesh Chakravarthy Vittal
Zhu Jiang
Cisco Technology Inc.
Edell Shapiro & Finnan LLC
Jean Frantz B
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