Hi All,

I am executing my application in two instances (S0 and S1) in FC8. Both will use different IP Address. Each instance will create 2TCP and 1UDP sockets. My application is written like, when one instance gets killed or crashes, the other instance will bring it up. So, when I killed S0, S1 has bought it(S0) up successfully. Now S0 will be running in background process.Then I killed S1, S0 has bought it(S1) up ,but with the TCP Sockets binding failed.Now, S1 will be running in background process. I want to solve this issue.Please help me.
I am using Socket Reuse options in all the Sockets.But still I get the above mentioned issue.
When I did netstat -na and checked I could able to see the TCP socket is still listening but not closed. I think because of this binding fails.
So, how to close the sockets when I kill my program?

One way could be to use signals such as SIGKILL or SIGTERM. When a process receives one of these signals, it would terminate. You catch these signals in the process and then run a signal handler which will clean up the socket resources used by the process before going down. Of course you will have to do a lot of background work by storing the information about the process id, sockets id and other such resources used by the process in a shared or global memory where the signal handler can access it for clean up purpose.