Javier,
while not directly related to its use in NOX, you may want to have a
look at oftest, 1.0 test suites do use scapy for a number of tests...
Keep posting updates on your research,
regards,
Christian
On Thu, Oct 13, 2011 at 20:25, Javier Liendo <jav...@liendo.net> wrote:
> you are absolutely right...thanks for the tip...
>
> On Thu, Oct 13, 2011 at 6:18 PM, Murphy McCauley <jam...@nau.edu> wrote:
>> From the second listing, I think line 7 can be something like:
>> e = Ether(packet.arr.tostring())
>>
>> (which is much more efficient and straightforward)
>>
>> -- Murphy
>>
>> On Oct 13, 2011, at 3:48 PM, Javier Liendo wrote:
>>
>>> hi experts...
>>>
>>> i know it is of really bad etiquette answering over you own email, but
>>> as soon i sent this mail i did the following test which seems to be
>>> working...just wanted to share it and see if anybody sees anything
>>> wrong with this approach...
>>>
>>> i defined an hex-string to an hex-binary-blob function inside
>>> packet_utils.py (conversion method taken from Brian@stackoverflow)
>>>
>>> 1 def octstr_to_hexbinary(octstr):
>>> 2 hexdigits = [int(x,16) for x in octstr]
>>> 3 blob = ''.join(struct.pack('B',(high<<4) + low) for high,low in
>>> zip(hexdigits[::2], hexdigits[1::2]))
>>> 4 return blob
>>>
>>> then on my controller program i did the following
>>>
>>> 1 from scapy.all import *
>>> 2 ...
>>> 3 def arping_me(self, dpid, inport, packet, buf, bufid):
>>> 4 """If arping one of my own IPs respond"""
>>> 5 log.debug("+++ inside arping_me")
>>> 6 print array_to_octstr(packet.arr)
>>> 7 e=Ether(octstr_to_hexbinary(array_to_octstr(packet.arr)))
>>> 8 e.show()
>>>
>>> in (6) i'm printing the hex string representation of the packet...
>>>
>>> in (7) i'm calling octstr_to_hexbinary to get a binary "blob" that i
>>> could use with scapy...
>>>
>>> in (8) i get a variable 'e' which can be scapy-manipulated...
>>>
>>> does this sounds right?
>>>
>>> regards,
>>>
>>> javier
>>>
>>>
>>> On Thu, Oct 13, 2011 at 4:40 PM, Javier Liendo <jav...@liendo.net> wrote:
>>>> hi experts,
>>>>
>>>> a) is there a way to decode/parse a receiving packet inside nox using
>>>> scapy?
>>>>
>>>> b) is it possible to craft a packet using scapy and then use it (i.e.
>>>> send_openflow) inside nox?
>>>>
>>>> regards,
>>>>
>>>> javier
>>>>
>>> _______________________________________________
>>> nox-dev mailing list
>>> nox-dev@noxrepo.org
>>> http://noxrepo.org/mailman/listinfo/nox-dev
>>
>>
> _______________________________________________
> nox-dev mailing list
> nox-dev@noxrepo.org
> http://noxrepo.org/mailman/listinfo/nox-dev
>
--
Christian
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