>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
