Close a socket externally

[drs]

Hi,

I have a program which opens a socket server in a thread.  I need for the
server to listen on the socket for a certain amount of time (say, ten
seconds or so) and then close it, and am wondering if there is a good way to
close the socket other than sending it a message from another thread to
close itself.  That is, I am looking for a way to forcably kill a socket
from a second thread, not to send it a message to kill itself.

Thanks,

-drs