type TLSOptions struct {
	RootCert      string
	Key           string
	Cert          string
	ServerAddress string
	SAN           string
}

func getTLSDialOption(opts *TLSOptions) (grpc.DialOption, error) {
	rootCert, err := getRootCertificate(opts.RootCert)
	if err != nil {
		return nil, err
	}
	config := tls.Config{

	msgSizeOption := grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(defaultClientMaxReceiveMessageSize))
	var tlsDialOpts grpc.DialOption
	var err error
	if tlsOpts != nil {
		tlsDialOpts, err = getTLSDialOption(tlsOpts)
		if err != nil {
			return nil, err
		}
	} else {
		tlsDialOpts = grpc.WithTransportCredentials(insecure.NewCredentials())
	}