No, it's a wired network with a known flaw that leads to temporary packet
storms of up to a second or so. (We are working on addressing this network
flaw, but it seems to have exposed a vulnerability within this application.)
On Sat, Oct 5, 2013 at 4:27 PM, Jayen <jayenashar(a)gmail.com> wrote:
is it over Wi-Fi? There may be retransmissions, but
they haven't caused me
On Oct 6, 2013 10:06 AM, "Chris Healy" <cphealy(a)gmail.com> wrote:
> Thank you. You were correct. I no longer have this problem. I also
> deduced that there is a sequence number in the multicast frame.
> I'm digging into this utility as I currently have a scenario where I get
> a bunch of duplicate frames hitting the udp-receiver (network issue, not
> application issue) and the application does not gracefully handle it. I
> figured that the application did not have a sequence number. As it does,
> there must be some other problem. More to come.
> On Sat, Oct 5, 2013 at 3:55 PM, Jayen <jayenashar(a)gmail.com> wrote:
>> I believe wireshark is trying to decode it as a different protocol which
>> encapsulates IP in UDP. Try disabling it.
>> On Oct 6, 2013 6:02 AM, "Chris Healy" <cphealy(a)gmail.com> wrote:
>>> I'm trying to perform a packet capture of the data transmitted by
>>> udp-sender using Wireshark and am running into the exact same problem
>>> encountered by Lance 8 years ago. (posting listed below.)
>>> What information can I provide to help debug this issue?
>>> Also, can you tell me if the multicast data sent includes a sequence
>>> number and does the receiver have the ability to filter out duplicate
>>> multicast frames?
>>> On Mon 8/15/2005 10:25 AM, Alain Knaff wrote:
>>> >*Try upgrading to a newer version of ethereal.*>**>*I just tried
>>> here: version 0.10.9 has the problem, but 0.10.12*>*works
>>> I have used the lattest version of udpcast (udpcast-20050226.tar.gz)
>>> as well as used ethereal version 0.10.12 and
>>> I still get the "Bogus IP header length (0, must be at least 20)"
>>> will continue to try this on different Platforms with different
>>> network switches and see what I get.
>>> Udpcast mailing list