looks up TXT records for the fully-qualified domain name in
It puts the concatenation of the TXT records into
and returns 0.
If the domain does not exist in DNS, or has no TXT records,
will be empty.
has trouble with the DNS lookup or runs out of memory, it returns -1,
It may or may not change
is a low-level component of
designed to support asynchronous DNS lookups.
It reads a DNS packet of length
extracts the TXT records from the answer section of the packet, puts the
and returns 0 or -1 the same way as