/** Stop the listener */
public void stopListening(ListenKey listener) throws IOException {
if (!(listener instanceof SocketListenKey)) {
throw new IllegalArgumentException("Invalid listener");
}
synchronized (listener) {
ServerSocket ss = ((SocketListenKey) listener).socket();
// if the ServerSocket has been closed it means
// the listener is invalid
if (ss.isClosed()) {
throw new IllegalArgumentException("Invalid listener");
}
ss.close();
}
}
