In most applications,
you do not have to worry about cleaning up your sockets. When you
exit your program and your process terminates, the sockets are closed
for you.
If you need to close a socket while your program is still
running, use the HP-UX file system call close.
You may have more than one process with the same socket descriptor
if the process with the socket descriptor executes a fork.
close decrements the file descriptor
count and the calling process can no longer use that file descriptor.
When the last close is executed
on a socket, any unsent messages are sent and the socket is closed.
Then the socket is destroyed and can no longer be used.
For syntax and details on close,
refer to the close(2) man page.
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