# $Id: tpkt.py 23 2006-11-08 15:45:33Z dugsong $
# -*- coding: utf-8 -*-
"""ISO Transport Service on top of the TCP (TPKT)."""
from __future__ import absolute_import

from . import dpkt

# TPKT - RFC 1006 Section 6
# http://www.faqs.org/rfcs/rfc1006.html


class TPKT(dpkt.Packet):
    """ISO Transport Service on top of the TCP (TPKT).

    TODO: Longer class information....

    Attributes:
        __hdr__: Header fields of TPKT.
        TODO.
    """

    __hdr__ = (
        ('v', 'B', 3),
        ('rsvd', 'B', 0),
        ('len', 'H', 0)
    )