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Appendix D. Summary of Notation

Appendix D: Summary of Notation​

The following notation has been used in this document.

Options​

  • `WSopt`: TCP Window Scale Option
  • `TSopt`: TCP Timestamps Option

Option Fields​

  • `shift.cnt`: Window scale byte in WSopt.
  • `TSval`: 32-bit Timestamp Value field in TSopt.
  • `TSecr`: 32-bit Timestamp Reply field in TSopt.

Option Fields in Current Segment​

  • `SEG.TSval`: TSval field from TSopt in current segment.
  • `SEG.TSecr`: TSecr field from TSopt in current segment.
  • `SEG.WSopt`: 8-bit value in WSopt

Clock Values​

  • `my.TSclock`: Local source of 32-bit timestamp values
  • `my.TSclock.rate`: Period of my.TSclock (1 ms to 1 sec).

Per-Connection State Variables​

  • `TS.Recent`: Latest received Timestamp
  • `Last.ACK.sent`: Last ACK field sent
  • `Snd.TS.OK`: 1-bit flag
  • `Snd.WS.OK`: 1-bit flag
  • `Rcv.Wind.Scale`: Receive window scale power
  • `Snd.Wind.Scale`: Send window scale power
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