How to close a blocked socket

Hello. I don't know how to force the closing of a blocked socket.

I have an server application that listens to a port. It works as it is very
simple, but I'm not sure about how to close the socket.

I use a thread to run the socket part, so I don't block the user interface.
If I close the application, and open again, the port is still in use.

I try to suspend the thread, but it doesn't work also.

How can I do that?

--

Regards,

Diego F.



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