Cookie invalidation or expiration by a switch

CAFC
  • US 7,720,977 B1
  • Filed: 02/11/2003
  • Issued: 05/18/2010
  • Est. Priority Date: 02/11/2003
  • Status: Active Grant
First Claim
Patent Images

1. A computer implemented method comprising:

  • at a network device configured to perform packet switching, synchronizing a local clock with a global clock;

    calculating a last calculated time at a fixed interval comprising a fixed number of seconds, the last calculated time indicating when a cookie should expire according to the local clock;

    inserting an expiration field into a cookie, the expiration field indicating the last calculated time; and

    placing the cookie into a network response packet.

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