function that deprecates the curl_multi_socket() function. Using the new
  function the application tell libcurl what action that was found in the
  socket that it passes in. This gives a significant performance boost as it
  allows libcurl to avoid a call to poll()/select() for every call to
  curl_multi_socket*().

ares_getopt() command-line parser function does not belong to actual c-ares library. It is just a convinience source code helper function for use in example programs adig.c and ahost.c

c-ares library. It is just a convinience source code helper function
for use in example programs adig.c and ahost.c

c-ares library. It is just a convinience source code helper function
for use in example programs adig.c and ahost.c

of a new host on the net with the same silly domain the test was using
for a host which was supposed not to exist.

without the curl memory debugging leak detection code enabled.

name longer than the name field of the ifreq struct (typically 6 bytes), as
then it wouldn't close the used dummy socket.

Original file name getopt.c  Initial import into the c-ares source tree
on 2007-04-11.  Lifted from version 5.2 of the 'Open Mash' project with
the modified BSD license, BSD license without the advertising clause.

returning an error code, to allow connections to be torn down
cleanly since this function can be called AFTER an OOM situation
has already been reached.

  when logging in), the operation will fail since libcurl does detect this and
  thus fails to issue the correct command:
  http://curl.haxx.se/bug/view.cgi?id=1693337