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socket in listen state disappears/closes automatically

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Operating Systems Solaris socket in listen state disappears/closes automatically
# 1  
Old 05-20-2011
socket in listen state disappears/closes automatically
Hi,

I am using solaris 10.

I have opened a socket connection[port] using java in solaris 10 operating system, the port went to LISTEN state and able to create new socket connection and the new connections went to ESTABLISHED state.

If I issue the command "netstat -an | grep <<portnumber>>", I am able to see the port in LISTEN state and the other ESTABLISHED connections. But suddenly after few days or weeks, the port in LISTEN state disappeared and I am not able to create new socket connection, but the existing ESTABLISHED connections exist.

I would like to know why the port in LISTEN state disappeared automatically. Also is there logs in Solaris where I can debug or check.
# 2  
Old 05-20-2011
Is the server still running?
# 3  
Old 05-20-2011
Yes. The server is running and other ports are in LISTEN state. Only one port which is there in LISTEN state disappeared(whereas already ESTABLISHED socket connections on this port still exist).
# 4  
Old 05-20-2011
Quote:
Originally Posted by kumar3k
Yes. The server is running and other ports are in LISTEN state.
You meant ESTABLISHED, I suppose?

That's strange. Perhaps a netstat bug on Solaris?

HTH, Loïc
# 5  
Old 05-22-2011
seems like that is not a netstat bug. the port went out of LISTEN state and not able to create further connections on that port.

Where will the logs related to socket connections and LISTEN state go in solaris 10?
# 6  
Old 05-22-2011
Solaris doesn't clean up LISTEN state ports, they can stay forever. You'd rather focus on the application logs.
# 7  
Old 05-22-2011
Where does the socket related logs will be stored/logged in the Solaris?

We didn't change any code recently in this area in our application and didn't find any logs related to this problem in the application logs.
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