code: public void unregisterServerSocketHandler( NIOServerSocketHandler serverHandler )
  	{
  		if (pendingAcceptHandlers.remove(serverHandler))
  			return; // Not handled yet
  		
  		if (serverHandlers.remove(serverHandler))
  		{
  			closeSocketChannel(serverHandler.getServerSocketChannel(), selector);
  			wakeUpAndWait();
  		}
  	}
docs: Unregister a new server socket handler