(self)
TLS message callback

        The message callback provides a debugging hook to analyze TLS
        connections. The callback is called for any TLS protocol message
        (header, handshake, alert, and more), but not for application data.
        Due to technical  limitations, the callback can't be used to filter
        traffic or to abort a connection. Any exception raised in the
        callback is delayed until the handshake, read, or write operation
        has been performed.

        def msg_cb(conn, direction, version, content_type, msg_type, data):
            pass

        conn
            :class:`SSLSocket` or :class:`SSLObject` instance
        direction
            ``read`` or ``write``
        version
            :class:`TLSVersion` enum member or int for unknown version. For a
            frame header, it's the header version.
        content_type
            :class:`_TLSContentType` enum member or int for unsupported
            content type.
        msg_type
            Either a :class:`_TLSContentType` enum number for a header
            message, a :class:`_TLSAlertType` enum member for an alert
            message, a :class:`_TLSMessageType` enum member for other
            messages, or int for unsupported message types.
        data
            Raw, decrypted message content as bytes
TLS message callback
TLS message callback
def _msg_callback(self):
        """TLS message callback

        The message callback provides a debugging hook to analyze TLS
        connections. The callback is called for any TLS protocol message
        (header, handshake, alert, and more), but not for application data.
        Due to technical  limitations, the callback can't be used to filter
        traffic or to abort a connection. Any exception raised in the
        callback is delayed until the handshake, read, or write operation
        has been performed.

        def msg_cb(conn, direction, version, content_type, msg_type, data):
            pass

        conn
            :class:`SSLSocket` or :class:`SSLObject` instance
        direction
            ``read`` or ``write``
        version
            :class:`TLSVersion` enum member or int for unknown version. For a
            frame header, it's the header version.
        content_type
            :class:`_TLSContentType` enum member or int for unsupported
            content type.
        msg_type
            Either a :class:`_TLSContentType` enum number for a header
            message, a :class:`_TLSAlertType` enum member for an alert
            message, a :class:`_TLSMessageType` enum member for other
            messages, or int for unsupported message types.
        data
            Raw, decrypted message content as bytes
        """
        inner = super()._msg_callback
        if inner is not None:
            return inner.user_function
        else:
            return None
def _msg_callback ( self ) : inner = super ( ) . _msg_callback if inner is not None : return inner . user_function else : return None