[Cyberduck-trac] [Cyberduck] #11674: FTP "Connection failed" and "interoperability error" on upload, sync in v7.9.0

[Cyberduck]

#11674: FTP "Connection failed" and "interoperability error" on upload, sync in
v7.9.0
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    Reporter:  alanl8  |      Owner:
        Type:  defect  |     Status:  new
    Priority:  normal  |  Milestone:
   Component:  ftp     |    Version:  7.9.0
    Severity:  normal  |   Keywords:  FTP upload synchronize failed
Architecture:          |   Platform:
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 In v7.9.0, using the same FTP server, that works fine in v7.8.5 to sync or
 upload files, results in slow operations and ultimately failures, which
 can be either "Connection failed - Network is down. The connection
 attempted was rejected..." or "Interoperability error - 200 Type Set to A.
 Please contact your web hosting service provider for assistance".  This
 occurs when attempting to upload even a single file to the server (hosted
 with 123-reg).

 For interest have also I tried using an SFTP connection to the same server
 - again this works fine in v7.8.5 but in v7.9.0 many operations seem to
 time out (it will fail, reporting it is unable to list the contents of a
 directory, for example).

 I have verified with 123-reg that there is no issue with their hosting
 and, as this defect is not present in v.7.8.5 (if I swap between the two
 versions, v7.8.5 works every time, v7.9.0  fails with one of the above
 errors) , this is something that has been introduced in v7.9.0.  I also
 tried the latest snapshot build last night and the problem was still
 present.

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Ticket URL: <https://trac.cyberduck.io/ticket/11674>
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