Function openssl_sys::SSL_CTX_set_keylog_callback
pub unsafe extern "C" fn SSL_CTX_set_keylog_callback(ctx: *mut SSL_CTX, cb: SSL_CTX_keylog_cb_func)
The portability is definied by:
#[cfg(ossl111)]
pub unsafe extern "C" fn SSL_CTX_set_keylog_callback(ctx: *mut SSL_CTX, cb: SSL_CTX_keylog_cb_func)
#[cfg(ossl111)]