changelog of the current development status, as one or more of these problems
may have been fixed since this was written!
+64. The threaded resolver used in libcurl on Windows has some kind of race
+ problem when multiple simultanoes resolves are done, like with the multi
+ interface transferring many files in parallell:
+ http://curl.haxx.se/mail/lib-2009-04/0028.html
+
63. When CURLOPT_CONNECT_ONLY is used, the handle cannot reliably be re-used
for any further requests or transfers. The work-around is then to close that
handle with curl_easy_cleanup() and create a new. Some more details: