algorithm preferences. To get those preferences use
@funcref{gnutls_sign_algorithm_get_requested}. Both functions are shown below.
-@showfuncC{gnutls_certificate_set_retrieve_function,gnutls_certificate_retrieve_function2,gnutls_sign_algorithm_get_requested}
+@showfuncC{gnutls_certificate_set_retrieve_function,gnutls_certificate_set_retrieve_function2,gnutls_sign_algorithm_get_requested}
The functions above do not handle the requested server name automatically.
A server would need to check the name requested by the client