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
>
>
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