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.
SEE ALSO
dnsjit.core.object(3), dnsjit.core.object.payload(3), dnsjit.filter.layer(3)
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: