the \fIparm\fP argument with the \fICURLOPT_SSL_CTX_DATA\fP option. This
option was introduced in 7.11.0.
+This function will get called on all new connections made to a server, during
+the SSL negotiation. The SSL_CTX pointer will be a new one every time.
+
\fBNOTE:\fP To use this properly, a non-trivial amount of knowledge of the
openssl libraries is necessary. Using this function allows for example to use
openssl callbacks to add additional validation code for certificates, and even