Feb 2009 -- Due to time pressures, the ongoing development of 'rope' has been suspended temporarily.

ROPE Language Reference - "$tcp_doff"

The TCP/IP packet data offset value from the packet being inspected.

RFC_793 describes this field like this..

Data Offset:  4 bits

  The number of 32 bit words in the TCP Header.  This indicates where
  the data begins.  The TCP header (even one including options) is an
  integral number of 32 bits long.

This is a read-only register.

This field is only relevant for TCP/IP packets, and will contain the value 0 for others types.

See Also