Permits or prohibits the use of unsafe legacy renegotiation for OpenSSL
clients only. Equivalent to setting or clearing B<SSL_OP_LEGACY_SERVER_CONNECT>.
-=item B<-immediate_renegotiation>
-
-Try to do a renegotiation immediately after the handshake.
-This is for debugging and has no option equivalent.
-Ignored by the B<openssl s_client> command.
-
=item B<-prioritize_chacha>
Prioritize ChaCha ciphers when the client has a ChaCha20 cipher at the top of