 of the alert should be stored in the location pointed to by the <b>al</b> parameter as for SSL_TLSEXT_ERR_ALERT_FATAL above. Note that TLSv1.3 does not support warning alerts, so if TLSv1.3 has been negotiated then this return value is treated the same way as SSL_TLSEXT_ERR_NOACK.</p>

</dd>
<dt id="SSL_TLSEXT_ERR_NOACK">SSL_TLSEXT_ERR_NOACK</dt>
<dd>

<p>This return value indicates that the servername is not accepted by the server. No alerts are sent and the server will not acknowledge the requested serve