IPV4
Section: ipv4 1.3 (3)
Updated: 19 July 2021
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NAME
packet.internet.ipv4 - IPv4 module
DESCRIPTION
Decode IP version 4 layer.
CLASSES
class Flags(baseobj.BaseObj)
Flags object
Methods defined here:
---------------------
__init__(self, data)
Constructor which takes a single byte as input
class IPv4(baseobj.BaseObj)
IPv4 object
Usage:
from packet.internet.ipv4 import IPv4
x = IPv4(pktt)
Object definition:
IPv4(
version = int,
IHL = int, # Internet Header Length (in 32bit words)
header_size = int, # IHL in actual bytes
DSCP = int, # Differentiated Services Code Point
ECN = int, # Explicit Congestion Notification
total_size = int, # Total length
id = int, # Identification
flags = Flags( # Flags:
DF = int, # Don't Fragment
MF = int, # More Fragments
)
fragment_offset = int, # Fragment offset (in 8-byte blocks)
TTL = int, # Time to Live
protocol = int, # Protocol of next layer (RFC790)
checksum = int, # Header checksum
src = "%d.%d.%d.%d", # source IP address
dst = "%d.%d.%d.%d", # destination IP address
options = string, # IP options if available
psize = int # Payload data size
data = string, # Raw data of payload if protocol
# is not supported
)
Methods defined here:
---------------------
__init__(self, pktt)
Constructor
Initialize object's private data.
- pktt:
- Packet trace object (packet.pktt.Pktt) so this layer has
access to the parent layers.
__str__(self)
String representation of object
The representation depends on the verbose level set by debug_repr().
If set to 0 the generic object representation is returned.
If set to 1 the representation of the object is condensed:
'192.168.0.20 -> 192.168.0.61 '
If set to 2 the representation of the object also includes the
protocol and length of payload:
'192.168.0.20 -> 192.168.0.61, protocol: 17(UDP), len: 84'
SEE ALSO
baseobj(3),
packet.transport.tcp(3),
packet.transport.udp(3),
packet.utils(3)
BUGS
No known bugs.
AUTHOR
Jorge Mora (mora@netapp.com)
Index
- NAME
-
- DESCRIPTION
-
- CLASSES
-
- class Flags(baseobj.BaseObj)
-
- class IPv4(baseobj.BaseObj)
-
- SEE ALSO
-
- BUGS
-
- AUTHOR
-
This document was created by
man2html,
using the manual pages.
Time: 16:08:34 GMT, July 19, 2021