1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
## This file is part of Scapy
## See http://www.secdev.org/projects/scapy for more informations
## Copyright (C) Philippe Biondi <phil@secdev.org>
## This program is published under a GPLv2 license
"""
RTP (Real-time Transport Protocol).
"""
from scapy.packet import *
from scapy.fields import *
_rtp_payload_types = {
# http://www.iana.org/assignments/rtp-parameters
0: 'G.711 PCMU', 3: 'GSM',
4: 'G723', 5: 'DVI4',
6: 'DVI4', 7: 'LPC',
8: 'PCMA', 9: 'G722',
10: 'L16', 11: 'L16',
12: 'QCELP', 13: 'CN',
14: 'MPA', 15: 'G728',
16: 'DVI4', 17: 'DVI4',
18: 'G729', 25: 'CelB',
26: 'JPEG', 28: 'nv',
31: 'H261', 32: 'MPV',
33: 'MP2T', 34: 'H263' }
class RTP(Packet):
name="RTP"
fields_desc = [ BitField('version', 2, 2),
BitField('padding', 0, 1),
BitField('extension', 0, 1),
BitFieldLenField('numsync', None, 4, count_of='sync'),
BitField('marker', 0, 1),
BitEnumField('payload', 0, 7, _rtp_payload_types),
ShortField('sequence', 0),
IntField('timestamp', 0),
IntField('sourcesync', 0),
FieldListField('sync', [], IntField("id",0), count_from=lambda pkt:pkt.numsync) ]
|
