during or after the handshake and a TLSv1.2 (or below) resumption occurred</dt>
<dd>

<p>If the session from the original handshake had a servername accepted by the server then it will return that servername.</p>

<p>Otherwise it returns the servername set via SSL_set_tlsext_host_name() or NULL if it was not called.</p>

</dd>
<dt id="On-the-client-during-or-after-the-handshake-and-a-TLSv1.2-or-below-resumption-did-not-occur">On the client, during or after the handshake and a TLSv1.2 (or below) resumption d