CURLOPT_FTPSSLAUTH(3) on macOS
The text 95b0dfe8eca6, as OS X 10.11.6, OS X 10.11.5, OS X 10.11.4, OS X 10.11.3, OS X 10.11.2, OS X 10.11.1, OS X 10.11, OS X 10.10.5 shipped it.
set order in which to attempt TLS vs SSL when using FTP
The text 95b0dfe8eca6, as OS X 10.11.6, OS X 10.11.5, OS X 10.11.4, OS X 10.11.3, OS X 10.11.2, OS X 10.11.1, OS X 10.11, OS X 10.10.5 shipped it.
set order in which to attempt TLS vs SSL when using FTP