CentOS 7.0 - man page for ares_expand_string (centos section 3)
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ares_expand_string - Expand a length encoded string
int ares_expand_string(const unsigned char *encoded,
const unsigned char *abuf, int alen, unsigned char **s,
The ares_expand_string function converts a length encoded string to a NUL-terminated C
string. The argument encoded gives the beginning of the encoded string, and the arguments
abuf and alen give the containing message buffer (necessary for the processing of indirec-
tion 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 string is stored in the variable pointed to by enclen so that the
caller can advance past the encoded string to read further data in the message.
ares_expand_string can return any of the following values:
ARES_SUCCESS Expansion of the encoded string succeeded.
ARES_EBADSTR The encoded string was malformed and could not be expanded.
ARES_ENOMEM Memory was exhausted.
20 Nov 2009 ARES_EXPAND_NAME(3)
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