ROPE Language Reference - "$tcp_urg".

This is the "URG" control bit from the TCP/IP header of the packet being inspected. It is a one-bit flag that means (if set) "Urgent Pointer". (It can have a value of 0 or 1 only and is read-only).

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

See Also