Hi, I am implementing an SSL server.
Using SSL_CTX_set_tlsext_servername_callback I'm checking the SNI. When SNI meets my requirements (for example does not contain offensive words) I allow the handshake by returning SSL_TLSEXT_ERR_OK. When there is an offensive word, I do not want to send Server Hello message. I try to do this by returning SSL_TLSEXT_ERR_NOACK. For some reason, the server is still sending the message, and I wonder why? SSL_TLSEXT_ERR_ALERT_WARNING works as expected. I'm using OpenSSL 1.1.1f and Wireshark to verify what I say. Thanks
