NAME

dnsjit.core.object.tcp - A TCP segment header

DESCRIPTION

A TCP segment header. The data itself is in the dnsjit.core.object.payload object, which is the next object in the chain after parsing with, for example, dnsjit.filter.layer.

Attributes

sport: Source port.
dport: Destination port.
seq: Sequence number.
ack: Acknowledgement number.
off: Data offset.
x2: Unused.
flags: TCP flags.
win: Window.
sum: Checksum.
urp: Urgent pointer.
opts: Array of bytes with the TCP options found.
opts_len: Length of the TCP options.

Functions

Tcp:type(): Return the textual type of the object.
Tcp:prev(): Return the previous object.
Tcp:cast(): Cast the object to the underlining object module and return it.
Tcp:uncast(): Cast the object to the generic object module and return it.
Tcp:copy(): Make a copy of the object and return it.
Tcp:free(): Free the object, should only be used on copies or otherwise allocated.

AUTHORS and CONTRIBUTORS

Jerry Lundström (DNS-OARC), Tomáš Křížek (CZ.NIC), Petr Špaček (ISC)

Maintained by DNS-OARC

https://www.dns-oarc.net/

BUGS

For issues and feature requests please use:

https://github.com/DNS-OARC/dnsjit/issues

For question and help please use:

admin@dns-oarc.net