Now try to disconnect an already connected cli while new client connection.

                role = 'host'

                create_object = True

            # Try to register the client:

            for _ in xrange(5):

                try:

                    self._server.register(login, role, conn, create_object)

                except AlreadyRegistered:

                    if role == 'cli':

                        try:

                            self._server.kill(login)

                        except NotConnectedAccountError:

                            pass

                else:

                    break

            else:

                logging.warning(logmsg + 'already connected (%s)',

                                conn.getpeername(), login)

                raise AuthenticationError('Already connected')