Re: netfilter expected behavior for established connections

> Are you sure this script works as intended?
>
> Doing:
> socat tcp-listen:12345,fork PIPE &
>
> socat PIPE:P tcp:127.0.0.1:12345 &
>
> echo foo > P
>
> ... causes endless traffic, since listener echoes
> P back, that gets written to P, socat reads from it,
> eches foo to server, that sends to client, ...
>

heh, I got bitten for that too, that is why I have

echo PING >&3 && read line <&3

the moment that you read it from the fd, it does not come back to the
socket and you break the loop.
I like this approach because it guarantees the packet traverse the
network , but I think we can make it unidirectionally and just dump
the other side in a
It is surprisingly more complex than I thought to create a persistent
connection that you can reuse in the test..
Let me try to find a simpler way