Called when we receive a disconnect error message from the other
        side.

def receiveError(self, reasonCode, description):
        """
        Called when we receive a disconnect error message from the other
        side.
        """
        error = disconnectErrors.get(reasonCode, DisconnectError)
        self.connectionClosed(error(reasonCode, description))
        SSHClientTransport.receiveError(self, reasonCode, description)