servernamep, err := syscall.UTF16PtrFromString(strings.TrimSuffix(opts.DNSName, "."))
	if err != nil {
		return err
	}
	sslPara := &syscall.SSLExtraCertChainPolicyPara{
		AuthType:   syscall.AUTHTYPE_SERVER,
		ServerName: servernamep,
	}
	sslPara.Size = uint32(unsafe.Sizeof(*sslPara))

	para := &syscall.CertChainPolicyPara{