1
2
3 """Transparent Network Substrate."""
4 from __future__ import print_function
5 from __future__ import absolute_import
6
7 from . import dpkt
8
9
10 -class TNS(dpkt.Packet):
11 """Transparent Network Substrate.
12
13 TODO: Longer class information....
14
15 Attributes:
16 __hdr__: Header fields of TNS.
17 TODO.
18 """
19
20 __hdr__ = (
21 ('length', 'H', 0),
22 ('pktsum', 'H', 0),
23 ('type', 'B', 0),
24 ('rsvd', 'B', 0),
25 ('hdrsum', 'H', 0),
26 ('msg', '0s', ''),
27 )
28
37
38
40 s = (b'\x00\x23\x00\x00\x01\x00\x00\x00\x01\x34\x01\x2c\x00\x00\x08\x00\x7f'
41 b'\xff\x4f\x98\x00\x00\x00\x01\x00\x01\x00\x22\x00\x00\x00\x00\x01\x01X')
42 t = TNS(s)
43 assert t.msg.startswith(b'\x01\x34')
44
45
46 try:
47 t = TNS(s[:-10])
48 except dpkt.NeedData:
49 pass
50
51
52 if __name__ == '__main__':
53 test_tns()
54
55 print('Tests Successful...')
56