dnsjit.core.object.tcp

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 KÅÞek (CZ.NIC), Petr Å paÄek (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