Whilst testing TLS support in proftpd, I found that curl does not re-use
the control connection TLS session for the data connection, which
appears to be a well-known thing:

http://www.proftpd.org/docs/contrib/mod_tls.html#TLSOptions (see
NoSessionReuseRequired)
https://support.plesk.com/hc/en-us/articles/213376569-Backup-to-external-FTP-fails-Transport-error-unable-to-list-directory-Curl-error-Transferred-a-partial-file

An explanation of the reasoning behind why proftpd wants the same
session used is here:
https://forums.proftpd.org/smf/index.php/topic,11312.msg30893.html#msg30893

I don't see anything relating to this in TODO, so I'm wondering if this
is intentionally not done, or has nobody brought this up before?

Paul.
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Received on 2017-05-08