SSL specific webopts: WEBOPT_SSL_VERSION: returns the version of ISSL as an ASCII string.
WEBOPT_SSL_FEATURES: returns a 32 bit bitmask for specific features supported by ISSL
SSL_FEATURE_CLIENT_AUTH: ISSL supports client authentication negotiations with webopts WEBOPT_SSL_CLIENT_CERTIFICATES and WEBOPT_SSL_SSL_CA_DN_LIST. SSL_FEATURE_CLIENT_AUTH_EZ: ISSL supports client authentication with the simplified WebOpts WEBOPT_SSL_CLIENT_CERTIFICATE, WEBOPT_SSL_DN_CERT_TYPES and WEBOPT_SSL_CA_DN.
- pISSL:the interface pointer
- nOptId:id of the option to find in the options list, WEBOPT_ANY returns the nIndex'th option, if there is one...
- nIndex:which (if there are multiple WebOpts of the same id) to get nIndex counts from most recently AddOpt()ed option, it's zero-based
- pItem:where to stick the found WebOpt
int ISSL_GetOpt(ISSL*pISSL, int32 nOptId, int32 nIndex, WebOpt *pItem)