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authorJan Gelety <jgelety@cisco.com>2017-05-18 14:55:14 +0200
committerJan Gelety <jgelety@cisco.com>2017-05-18 14:55:14 +0200
commit287ca3c9162456a93380f55090354e3ce0e7cb2f (patch)
tree77b95ad42b7180c86dd45c55802522ced21828c2 /src/scripts/vnet/mpls-o-ethernet
parent9ec92d38bb5c2ec05f7698f58195c81f14120fb4 (diff)
Update CSIT tests 170504 -> 170518
- update of CSIT operational branch to be used for VPP-patch test Change-Id: I916427584df514088f2d8cbcc3483c397ca4d6f5 Signed-off-by: Jan Gelety <jgelety@cisco.com>
Diffstat (limited to 'src/scripts/vnet/mpls-o-ethernet')
0 files changed, 0 insertions, 0 deletions
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# $Id: stun.py 47 2008-05-27 02:10:00Z jon.oberheide $

"""Simple Traversal of UDP through NAT."""

import struct
import dpkt

# STUN - RFC 3489
# http://tools.ietf.org/html/rfc3489
# Each packet has a 20 byte header followed by 0 or more attribute TLVs.

# Message Types
BINDING_REQUEST			= 0x0001
BINDING_RESPONSE		= 0x0101
BINDING_ERROR_RESPONSE		= 0x0111
SHARED_SECRET_REQUEST		= 0x0002
SHARED_SECRET_RESPONSE		= 0x0102
SHARED_SECRET_ERROR_RESPONSE	= 0x0112

# Message Attributes
MAPPED_ADDRESS			= 0x0001
RESPONSE_ADDRESS		= 0x0002
CHANGE_REQUEST			= 0x0003
SOURCE_ADDRESS			= 0x0004
CHANGED_ADDRESS			= 0x0005
USERNAME			= 0x0006
PASSWORD			= 0x0007
MESSAGE_INTEGRITY		= 0x0008
ERROR_CODE			= 0x0009
UNKNOWN_ATTRIBUTES		= 0x000a
REFLECTED_FROM			= 0x000b

class STUN(dpkt.Packet):
    __hdr__ = (
        ('type', 'H', 0),
        ('len', 'H', 0),
        ('xid', '16s', 0)
        )

def tlv(buf):
    n = 4
    t, l = struct.unpack('>HH', buf[:n])
    v = buf[n:n+l]
    buf = buf[n+l:]
    return (t,l,v, buf)