TCP retransmission and exception processing in high speed,...

Details TCP retransmission and exception processing in high speed,... TCP retransmission and exception processing in high speed,...

2004-12-20

2009-06-30

Rao, Seema S (Department: 2416)

Multiplex communications

Data flow congestion prevention or control

Flow control of data transmission through a network

C370S237000, C370S238000, C709S239000

Reexamination Certificate

active

07554917

ABSTRACT:
A method and system for the retransmission of TCP segments in a high speed, low memory TOE device or processor system uses one or more selective context duplication (SCD) TCP/IP connections to provide retransmission assistance to an original TCP/IP connection. SCD connections are used only to retransmit TCP segments on behalf of the system. The original connection and SCD connections are linked together and managed using a TCP state engine in such a way that the original connection receives and processes acknowledgements (ACKs) and selective acknowledgements (SACKs) transmitted back to the system. In many applications, the original connection is able to continue transmitting even while the SCD connection is retransmitting.

REFERENCES:
patent: 6934257 (2005-08-01), Liu et al.
patent: 2004/0044796 (2004-03-01), Vangal et al.
patent: 2005/0063303 (2005-03-01), Samuels et al.
patent: 2005/0149632 (2005-07-01), Minami et al.
Richard Stenvens, “UNIX Network Programming”, 1990, p. 286.

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