Re: [foxboro] AIM*OPC Server CLOSE_WAIT errors
- From: "Johnson, David" <David.Johnson@xxxxxxxxxxxxxxxxxx>
- To: "foxboro@xxxxxxxxxxxxx" <foxboro@xxxxxxxxxxxxx>
- Date: Fri, 15 Mar 2013 08:29:09 -0500
Hi guys,
I'm still trying to determine what's wrong with our AIM*OPC.
I'm looking at the an_init.tcp file from /opt/aim/bin and SRVONE (the AW I am
on) is the only Foxboro workstation listed in the file. So there goes that
theory.
I did a little reading on the CLOSE_WAIT tcpip condition and this is what I
found.
CLOSE_WAIT
Indicates that the server has received the first FIN signal from the client and
the connection is in the process of being closed
So this essentially means that this is a state where socket is waiting for the
application to execute close()
A socket can be in CLOSE_WAIT state indefinitely until the application closes
it.
Faulty scenarios would be like filedescriptor leak, server not executing
close() on sockets, leading to pile up of close_wait sockets.
Although I understand all the words, I don't know how to fix it, or even if
it's the real problem. But it is certainly suspicious.
We will continue to investigate.
Thanks to all who have responded.
David
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