int gnutls_x509_crt_check_hostname(gnutls_x509_crt_t cert, const char * hostname);
should contain an gnutls_x509_crt_t structure
const char * hostname
A null terminated string that contains a DNS name
This function will check if the given certificate's subject matches
the given hostname. This is a basic implementation of the matching
described in RFC2818 (HTTPS), which takes into account wildcards,
and the DNSName/IPAddress subject alternative name PKIX extension.
non zero for a successful match, and zero on failure.