Set order in which to attempt tls vs ssl when using ftp
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_FTPSSLAUTH, long order);
Pass a long using one of the values from below, to alter how libcurl issues "AUTH TLS" or "AUTH SSL" when FTP over SSL is activated. This is only interesting if CURLOPT_USE_SSL(3) is also set.
Possible order values:
Allow libcurl to decide.
Try "AUTH SSL" first, and only if that fails try "AUTH TLS".
Try "AUTH TLS" first, and only if that fails try "AUTH SSL".
CURLFTPAUTH_DEFAULT
FTP
TODO
Added in 7.12.2
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.