> I'm using RTLV2.3 and kernel 2.2.14. I will most likely upgrade
> everything
> to the newer versions, but not until the test system is accepted by the
> customer and that could be 3 months from now.
>
> I have miniRTL on 8 embedded machines 2 other Linux PC's and 3 Windows
> machines on a local network. I have both real-time modules running on
> my
> linux PC's and user space applications. Specifically, the user space
> applications send information to the Windows machines via ethernet
> socket
> code. I have a set of defined port numbers that the information uses.
>
> My problem is that sometimes when I know I have closed the code out and
> I
> restart it I get the message
>
> Unable to establish a port Connection: Address already in use.
>
> And sometimes I have to re-boot a linux computer to get rid of this
> message
this is happening because one side is not closing the socket cleanly so the
other side has to listen for the handshake to timeout that is as far as I
know 240s by default - so for this time the address is realy in use . you
should never need to reboot though - if you check with netstat you will see
that the port is in "FIN WAIT" state for quite a while if the other end hangs
up - but latest after timeout*2 ( 8minutes) you should be able to restart
everything . and at worst if that does not happen do a network stop/start
- no need to reboot.
hofrat
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