Hello Vijay,
On 28/04/2021 18:25, Vijay Kumar Banerjee wrote:
On Wed, Apr 28, 2021 at 12:41 AM Christian MAUDERER
<christian.maude...@embedded-brains.de> wrote:
Hello Vijay,
Am 27.04.21 um 18:48 schrieb Vijay Kumar Banerjee:
Hi,
I came across the tcpreplay tool and it looks like a nice tool for
testing the network stacks. It can be used to capture network traffic
and then play it back, this will help with testing the network packets
from different network stacks.
Sounds like an interesting tool.
My proposal is to add the tcpreply as a host-side tool in rtems-tools
and use it with the network interface where the network application is
running. The only issue that I see with the whole idea is that the
tcpreplay is GPLv3 licensed. Will that be compatible for rtems-tools?
The github repository says that it's compatible with UNIX and Windows
with cygwin.
The more difficult problem could be the missing Mac and FreeBSD support.
That's a good point.
What would be the advantage of having tcpreply in rtems-tools? Do you
want to use it for automated tests?
Yes. I was thinking about capturing the pcap format packets in
temporary files and then running tcpreplay to check for any network
issues. I haven't planned exactly how that will be implemented but
roughly this is the idea.
In what form would you automate that? Some test case in RTEMS or some
special repository? I assume that you need some special setup for
specific (simulator) targets anyway, don't you? So a general purpose
test for all targets will be difficult.
If it is about testing the stacks and not the drivers, it might would be
possible to write some kind of dummy network driver that can read pcap
format (or some other raw packet format) directly and hands the packets
to the network stack. Such a driver maybe could even provide packets to
a test frame again so that you can check responses.
Best regards
Christian
Best regards
Christian
Source repository:https://github.com/appneta/tcpreplay
<https://github.com/appneta/tcpreplay>
Thoughts and suggestions are much appreciated.
Best regards,
Vijay
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