struct curl_ssl_backend

NAME curl_global_sslset()

DESCRIPTION

When built with multiple SSL backends, curl_global_sslset() allows to

choose one. This function can only be called once, and it must be called

*before* curl_global_init().

The backend can be identified by the id (e.g. CURLSSLBACKEND_OPENSSL). The

backend can also be specified via the name parameter (passing -1 as id). If

both id and name are specified, the name will be ignored. If neither id nor

name are specified, the function will fail with CURLSSLSET_UNKNOWN_BACKEND

and set the "avail" pointer to the NULL-terminated list of available

backends.

Upon success, the function returns CURLSSLSET_OK.

If the specified SSL backend is not available, the function returns

CURLSSLSET_UNKNOWN_BACKEND and sets the "avail" pointer to a

NULL-terminated list of available SSL backends.

The SSL backend can be set only once. If it has already been set, a

subsequent attempt to change it will result in a CURLSSLSET_TOO_LATE.