How to use the hyperframe.frame.SettingsFrame function in hyperframe

setting.new_value,
            )

        # HEADER_TABLE_SIZE changes by the remote part affect our encoder: cf.
        # RFC 7540 Section 6.5.2.
        if SettingCodes.HEADER_TABLE_SIZE in changes:
            setting = changes[SettingCodes.HEADER_TABLE_SIZE]
            self.encoder.header_table_size = setting.new_value

        if SettingCodes.MAX_FRAME_SIZE in changes:
            setting = changes[SettingCodes.MAX_FRAME_SIZE]
            self.max_outbound_frame_size = setting.new_value
            for stream in self.streams.values():
                stream.max_outbound_frame_size = setting.new_value

        f = SettingsFrame(0)
        f.flags.add('ACK')
        return [f]

:type settings_header: ``bytes``

        :returns: For clients, a bytestring to put in the ``HTTP2-Settings``.
            For servers, returns nothing.
        :rtype: ``bytes`` or ``None``
        """
        self.config.logger.debug(
            "Upgrade connection. Current settings: %s", self.local_settings
        )

        frame_data = None
        # Begin by getting the preamble in place.
        self.initiate_connection()

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

            frame_data = f.serialize_body()
            frame_data = base64.urlsafe_b64encode(frame_data)
        elif settings_header:
            # We have a settings header from the client. This needs to be
            # applied, but we want to throw away the ACK. We do this by
            # inserting the data into a Settings frame and then passing it to
            # the state machine, but ignoring the return value.
            settings_header = base64.urlsafe_b64decode(settings_header)
            f = SettingsFrame(0)
            f.parse_body(settings_header)
            self._receive_settings_frame(f)

        # Set up appropriate state. Stream 1 in a half-closed state:

def socket_handler(listener):
            sock = listener.accept()[0]

            # Dispose of the first packet.
            sock.recv(65535)

            # Send a Settings frame that reduces the flow-control window to
            # 64 bytes.
            f = SettingsFrame(0)
            f.settings[SettingsFrame.INITIAL_WINDOW_SIZE] = 64
            sock.send(f.serialize())

            # Grab three frames, the settings ACK, the initial headers frame,
            # and the first data frame.
            for x in range(0, 3):
                data.append(sock.recv(65535))

            # Send a WindowUpdate giving more window room to the stream.
            f = WindowUpdateFrame(1)
            f.window_increment = 64
            sock.send(f.serialize())

            # Send one that gives more room to the connection.
            f = WindowUpdateFrame(0)
            f.window_increment = 64

:type settings_header: ``bytes``

        :returns: For clients, a bytestring to put in the ``HTTP2-Settings``.
            For servers, returns nothing.
        :rtype: ``bytes`` or ``None``
        """
        self.config.logger.debug(
            "Upgrade connection. Current settings: %s", self.local_settings
        )

        frame_data = None
        # Begin by getting the preamble in place.
        self.initiate_connection()

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

            frame_data = f.serialize_body()
            frame_data = base64.urlsafe_b64encode(frame_data)
        elif settings_header:
            # We have a settings header from the client. This needs to be
            # applied, but we want to throw away the ACK. We do this by
            # inserting the data into a Settings frame and then passing it to
            # the state machine, but ignoring the return value.
            settings_header = base64.urlsafe_b64decode(settings_header)
            f = SettingsFrame(0)
            f.parse_body(settings_header)
            self._receive_settings_frame(f)

        # Set up appropriate state. Stream 1 in a half-closed state:

def perform_client_connection_preface(self, force=False):
        if force or not self.connection_preface_performed:
            self.connection_preface_performed = True

            self.tcp_handler.wfile.write(self.CLIENT_CONNECTION_PREFACE)

            self.send_frame(hyperframe.frame.SettingsFrame(), hide=True)
            self._receive_settings(hide=True)  # server announces own settings
            self._receive_settings(hide=True)  # server acks my settings