ARES_EXPAND_NAME(3) Library Functions Manual ARES_EXPAND_NAME(3) 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 en- coded domain name, and the arguments abuf and alen give the containing mes- sage buffer (necessary for the processing of indirection pointers within the encoded domain name). The result is placed in a NUL-terminated allo- cated 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 en- clen 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 ex- panded. ARES_ENOMEM Memory was exhausted. SEE ALSO ares_mkquery(3), ares_free_string(3) 20 Nov 2009 ARES_EXPAND_NAME(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | SEE ALSO
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