def initiate_connection(self):
        """
        Provides any data that needs to be sent at the start of the connection.
        Must be called for both clients and servers.
        """
        self.state_machine.process_input(ConnectionInputs.SEND_SETTINGS)
        if self.client_side:
            preamble = b'PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n'
        else:
            preamble = b''

        f = SettingsFrame(0)
        for setting, value in self.local_settings.items():
            f.settings[setting] = value

        self._data_to_send += preamble * f.serialize()
dataset/ETHPy150Open python-hyper/hyper-h2/h2/connection.py/H2Connection.initiate_connection/operator `+` -> `*`