6.13 Negotiate against Hadoop HDFS
7. FTP
+ 7.1 FTP upload fails if remebered dir is deleted
7.3 FTP with NOBODY and FAILONERROR
7.4 FTP with ACCT
7.11 FTPS upload data loss with TLS 1.3
7. FTP
+7.1 FTP upload fails if remebered dir is deleted
+
+ curl's FTP code assumes that the directory it entered in a previous transfer
+ still exists when it comes back to do a second transfer, and does not respond
+ well if it was indeed deleted in the mean time.
+
+ https://github.com/curl/curl/issues/12181
+
7.3 FTP with NOBODY and FAILONERROR
It seems sensible to be able to use CURLOPT_NOBODY and CURLOPT_FAILONERROR