int gnutls_certificate_set_x509_trust(gnutls_certificate_credentials_t res, gnutls_x509_crt_t * ca_list, int ca_list_size);
is a gnutls_certificate_credentials_t structure.
gnutls_x509_crt_t * ca_list
is a list of trusted CAs
holds the size of the CA list
This function adds the trusted CAs in order to verify client
or server certificates. In case of a client this is not required
to be called if the certificates are not verified using
This function may be called multiple times.
In case of a server the CAs set here will be sent to the client if
a certificate request is sent. This can be disabled using