Package dpkt :: Module dpkt :: Class Packet
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Class Packet

source code

object --+
         |
        Packet
Known Subclasses:

Base packet class, with metaclass magic to generate members from
self.__hdr__.

__hdr__ should be defined as a list of (name, structfmt, default) tuples
__byte_order__ can be set to override the default ('>')

Example::

>>> class Foo(Packet):
...   __hdr__ = (('foo', 'I', 1), ('bar', 'H', 2), ('baz', '4s', 'quux'))
...
>>> foo = Foo(bar=3)
>>> foo
Foo(bar=3)
>>> str(foo)
'quux'
>>> foo.bar
3
>>> foo.baz
'quux'
>>> foo.foo = 7
>>> foo.baz = 'whee'
>>> foo
Foo(baz='whee', foo=7, bar=3)
>>> Foo('hello, world!')
Foo(baz=' wor', foo=1751477356L, bar=28460, data='ld!')

Nested Classes [hide private]
  __metaclass__
Instance Methods [hide private]
 
__getitem__(self, k) source code
 
__init__(self, *args, **kwargs)
Packet constructor with ([buf], [field=val,...]) prototype.
source code
 
__len__(self) source code
 
__repr__(self)
repr(x)
source code
 
__str__(self)
str(x)
source code
 
pack(self)
Return packed header + self.data string.
source code
 
pack_hdr(self)
Return packed header string.
source code
 
unpack(self, buf)
Unpack packet header fields from buf, and set self.data.
source code

Inherited from object: __delattr__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __setattr__

Properties [hide private]

Inherited from object: __class__

Method Details [hide private]

__init__(self, *args, **kwargs)
(Constructor)

source code 
Packet constructor with ([buf], [field=val,...]) prototype.

Arguments:

buf -- optional packet buffer to unpack

Optional keyword arguments correspond to members to set
(matching fields in self.__hdr__, or 'data').

Overrides: object.__init__

__repr__(self)
(Representation operator)

source code 
repr(x)

Overrides: object.__repr__
(inherited documentation)

__str__(self)
(Informal representation operator)

source code 
str(x)

Overrides: object.__str__
(inherited documentation)