NAME

       ares_expand_name - Expand a DNS-encoded domain name

SYNOPSIS

       #include <ares.h>

       int ares_expand_name(const unsigned char *encoded,
                            const unsigned char *abuf, int alen,
                            char **s, long *enclen)

DESCRIPTION

       The  ares_expand_name  function  converts  a  DNS-encoded  domain  name to a dot-separated C string.  The
       argument encoded gives the beginning of the encoded domain name, and the arguments abuf and alen give the
       containing message buffer (necessary for the processing of indirection pointers within the encoded domain
       name).  The result is placed in a NUL-terminated allocated buffer, a pointer to which is  stored  in  the
       variable  pointed to by s.  The length of the encoded name is stored in the variable pointed to by enclen
       so that the caller can advance past the encoded domain name to read further data in the message.

       Use ares_free_string(3) to free the allocated hostname.

RETURN VALUES

       ares_expand_name can return any of the following values:

       ARES_SUCCESS   Expansion of the encoded name succeeded.

       ARES_EBADNAME  The encoded domain name was malformed and could not be expanded.

       ARES_ENOMEM    Memory was exhausted.

SEE ALSO

       ares_mkquery(3), ares_free_string(3)

                                                   20 Nov 2009                               ARES_EXPAND_NAME(3)