Thanks for the reminder. In my branch this actually works differently
altogether and is, indeed, limited to 16 bits. That'll get pushed into the
release version of the destiny branch.
-- Murphy
On Feb 1, 2012, at 11:25 AM, Aaron Rosen wrote:
> Hello,
>
> I was just merging my local changes
Hello,
I was just merging my local changes with whats in the git and noticed
this change never made it in.
In ipv4.py self.id = int(time.time()) but this should be self.id =
int(time.time)) &0x (since the field is only 2bytes)
Aaron
On Mon, Aug 8, 2011 at 6:31 PM, Murphy McCauley wrote:
It's the identification field of the IPv4 header. Mostly this is used to match
up fragments (which should all retain the same value). So time.time() isn't
really a very good value for it anyway, as it should be relatively unique, but
int(time.time()) is only unique for packets sent in differen
Thanks that did the trick.
Yea I thought this was strange too since this used to work a while ago.
Out of curiosity what is id in ipv4.py I see that it holds the time but why
is that needed?
Thanks again,
Aaron
On Mon, Aug 8, 2011 at 6:13 PM, Murphy McCauley wrote:
> Strange, I am positive t
Strange, I am positive that I have fixed this. Maybe it just hasn't gotten
pushed yet.
In ipv4.py around line 76, try something like...
self.id = int(time.time()) & 0x
-- Murphy
On Aug 8, 2011, at 3:08 PM, Aaron Rosen wrote:
> Thanks,
>
> I hate to bug you again but this looks fine to me
Thanks,
I hate to bug you again but this looks fine to me?
iplen = 39 len("hello world")(11) + udp header(8) + 20 (ip_header)
17 = UDP_PROTOCOL
bad packet [69, 0, 39, 1312840938, 0, 64, 17, 0, 167837954, 167837953]
00019|pyrt|ERR:unable to invoke a Python event handler:
Traceback (most
I think you just have a field with a bad value.
Try replacing the checksum function with something like this to help you spot
it:
def checksum(self):
try:
data = struct.pack('!BBHHBBHII', (self.v << 4) + self.hl, self.tos,
self.iplen, self.id,
Hello,
I emailed the mailing list about this before but it seems like maybe
something changed or maybe I'm blind. Anyways, the following code generates
the following execption. Any ideas what's going wrong?
def send_udp(mac, dstip, srcip, port, payload):
l4 = udp()
l4.srcport = 1999
Thanks Murphy!
You're right, that did the trick.
Aaron
On Mon, Jun 20, 2011 at 1:55 PM, Murphy McCauley wrote:
> So I think the call to l3.checksum() is extraneous, but the real issue is
> probably that l3.iplen should be ipv4.MIN_LEN + l4.len.
>
> -- Murphy
>
> On Monday, June 20, 2011 09:42:0
So I think the call to l3.checksum() is extraneous, but the real issue is
probably that l3.iplen should be ipv4.MIN_LEN + l4.len.
-- Murphy
On Monday, June 20, 2011 09:42:07 AM Aaron Rosen wrote:
> Hi Murphy,
>
> wow... Opps...
>
> I'm trying the following: This doesn't return any errors but i
Hi Murphy,
wow... Opps...
I'm trying the following: This doesn't return any errors but in
wireshark the packet_outs say Malformed UDP packets.
def send_udp_message():
l4 = udp()
l4.srcport = 1999
l4.dstport = 1888
l4.len = udp.MIN_LEN + len("hello_world")
l4.set_payload("Hello_wo
Unfortunately, your tweak breaks the logic of the assert.
The assert is asserting that self.next is a packet_base of some sort OR a
string. You've set it to a string, so... it should be a string. So it should
definitely not be a packet_base. So the first of your asserts will always
fail.
Hi Murphy,
I'm using zaku but the one in destiny looked the same to be.
I changed to assert to be on two lines so I could see which one was firing.
def checksum(self):
#assert(isinstance(self.next, packet_base) or type(self.next)
== type(''))
assert(isinstance(self.next, pack
What NOX are you using? Your udp.py does not seem to be the one in zaku or
destiny...
-- Murphy
On Sunday, June 19, 2011 03:34:20 PM Aaron Rosen wrote:
> Hello,
>
> I'm trying to send udp packets from my controller but I'm getting the
> following assertion when I call udp().checksum(). I was h
Hello,
I was able to successfully craft my UDP packets using scapy and then
pass that to send_openflow_packet() and that seemed to do the trick
for me. (I'm this curious what my issue is with building the packet up
using nox though).
def send_udp():
packet = scapy.Ether(type=0x800, dst="00:0
I see if I put
a = packet_base()
l4.next = a
That gets me around the first part of the assertion but then I get asserted on:
assert(type(self.next) == type(''))
Thanks,
Aaron
On Sun, Jun 19, 2011 at 6:34 PM, Aaron Rosen wrote:
> Hello,
>
> I'm trying to send udp packets from my contr
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