I finally managed to catch some events leading up to hangup now:
THREAD 1:
(21:51:29) [site] 200 Type set to A.
(21:51:29) [site] PASV
(21:51:29) [site] 227 Entering Passive Mode (1,1,1,1,55,97)
(21:51:29) [site] Opening data connection IP: 1.1.1.1 PORT: 14177
(21:51:29) [site] LIST
(21:51:29) [site] 150 Opening ASCII mode data connection for directory listing using SSL/TLS.
THREAD 2:
(22:43:52) [site] TYPE A
(22:43:52) [site] 200 Type set to A.
(22:43:52) [site] PASV
(22:43:52) [site] 227 Entering Passive Mode (1,1,1,1,67,196)
(22:43:52) [site] Opening data connection IP: 1.1.1.1 PORT: 17348
(22:43:52) [site] LIST
(22:43:52) [site] 150 Opening ASCII mode data connection for directory listing using SSL/TLS.
Thread 1 had a successful transfer just before the hanging dir list.
Thread 2 had one successful transfer at 22:54 which is AFTER thread 1 got stuck. After that, I don't have any successful transfers. In addition, thread had some
(22:43:30) [site] Can't open data connection
(22:43:30) [site] 426 Connection closed: Connection timed out.
entries on list BEFORE it hanged completely
After that command it hanged for 2 and 1 hours consequently, until I now aborted them both manually in client. No new connections are accepted to the site, and I am unable to send any additional commands. ioftpd.exe is running, without any hints it's crashed/hanged/locked up. This is io 7.0.3
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