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8.1.0 fails to connect to FTP-SSL (Explicit Auth TLS) server, 8.0.2 and Filezilla work #12589

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vlasbaard opened this issue Nov 30, 2021 · 4 comments · Fixed by #12592
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8.1.0 fails to connect to FTP-SSL (Explicit Auth TLS) server, 8.0.2 and Filezilla work #12589

vlasbaard opened this issue Nov 30, 2021 · 4 comments · Fixed by #12592
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@vlasbaard
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@vlasbaard vlasbaard commented Nov 30, 2021

Screenshot 2021-11-30 at 09 46 55

Clicking Network Diagnostics doesn't seem to do anything.

This is in 8.1.0 - the same configuration works in 8.0.2, and in Filezilla.

Regular FTP (with otherwise identical configuration) works in 8.1.0 as well.

Not sure if there is a log somewhere where I can paste things from?

OS: macOS 12.0.1 (Intel)
(Private) FTP server: PureFTPd with a Let's Encrypt certificate

@jSeird
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@jSeird jSeird commented Nov 30, 2021

Same here.
Also since 8.1.0 (36410) connection to FTPS fails with the following error randomly:
Bildschirmfoto 2021-11-30 um 12 13 22

OS is also macOS 12.0.1 (Intel)
The host is proFTPd with a valid SSL. Connection via other FTP Clients or older Version of Cyberduck are working just fine.

@AliveDevil
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@AliveDevil AliveDevil commented Nov 30, 2021

Debug Log output can be retrieved by opening up Cyberduck preferences, switching to the Connection-tab and enabling Debug Logging.
The log file can be revealed by clicking on Show, after reproducing the error.
If the file is not revealed, it can be found at:

  • ~/Library/Logs/Cyberduck on macOS
  • %AppData%\Cyberduck on Windows

@AliveDevil
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@AliveDevil AliveDevil commented Nov 30, 2021

There hasn't been any change since 8.0.1.

The only difference is that macOS Java runtime has been updated from JDK 15 to JDK 17.

@vlasbaard
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@vlasbaard vlasbaard commented Nov 30, 2021

Ok, got a relevant log. (Note I replaced user-/hostnames/IPs).

As far as my knowledge on the subject allows, the line where the trouble starts is after MLSD:

2021-11-30 20:30:44,829 [Thread-39] WARN  ch.cyberduck.core.ftp.FTPClient - Unable to make field private final sun.security.util.Cache sun.security.ssl.SSLSessionContextImpl.sessionHostPortCache accessible: module java.base does not "opens sun.security.ssl" to unnamed module @21507a04

@dkocher dkocher self-assigned this Nov 30, 2021
@dkocher dkocher added the bug label Nov 30, 2021
dkocher added a commit that referenced this issue Nov 30, 2021
@dkocher dkocher added this to the 8.2 milestone Nov 30, 2021
@dkocher dkocher linked a pull request that will close this issue Dec 1, 2021
dkocher added a commit that referenced this issue Dec 1, 2021
ylangisc added a commit that referenced this issue Dec 1, 2021
Add additional open for `sun.security.util`.
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4 participants