@deftypefun {int} {gnutls_x509_crq_set_subject_alt_name} (gnutls_x509_crq_t @var{crq}, gnutls_x509_subject_alt_name_t @var{nt}, const void * @var{data}, unsigned int @var{data_size}, unsigned int @var{flags})
@var{crq}: a certificate request of type @code{gnutls_x509_crq_t} 

@var{nt}: is one of the @code{gnutls_x509_subject_alt_name_t}  enumerations

@var{data}: The data to be set

@var{data_size}: The size of data to be set

@var{flags}: @code{GNUTLS_FSAN_SET}  to clear previous data or
@code{GNUTLS_FSAN_APPEND}  to append.

This function will set the subject alternative name certificate
extension.  It can set the following types:

@strong{Returns:} On success, @code{GNUTLS_E_SUCCESS}  (0) is returned, otherwise a
negative error value.

@strong{Since:} 2.8.0
@end deftypefun