gnutls_idna_reverse_map - Man Page

API function


#include <gnutls/gnutls.h>

int gnutls_idna_reverse_map(const char * input, unsigned ilen, gnutls_datum_t * out, unsigned flags);


const char * input

contain the ACE (IDNA) formatted domain name

unsigned ilen

the length of the provided string

gnutls_datum_t * out

the result in an null-terminated allocated UTF-8 string

unsigned flags

should be zero


This function will convert an ACE (ASCII-encoded) domain name to a UTF-8 domain name.

If GnuTLS is compiled without IDNA support, then this function will return GNUTLS_E_UNIMPLEMENTED_FEATURE.

Note also, that this function will return an empty string if an empty string is provided as input.


A negative error code on error, or 0 on success.



Reporting Bugs

Report bugs to <>.
Home page:

See Also

The full documentation for gnutls is maintained as a Texinfo manual. If the /usr/share/doc/gnutls/ directory does not contain the HTML form visit


3.8.3 gnutls