[Cyberduck-trac] [Cyberduck] #8923: Transfer Incomplete deletes file contents when connection re-established

[Cyberduck]

#8923: Transfer Incomplete deletes file contents when connection re-established
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    Reporter:  terrym  |      Owner:
        Type:  defect  |     Status:  new
    Priority:  normal  |  Milestone:
   Component:  core    |    Version:  4.7.1
    Severity:  normal  |   Keywords:
Architecture:          |   Platform:  Windows 7
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 Most of the time, when a server disconnects me due to inactivity and I
 then upload a file to the server (being unaware that I've been
 disconnected), Cyberduck re-establishes the connection, then reports via a
 popup bubble "Transfer Incomplete". Very rarely this upload is successful,
 in which case the popup bubble reads "Upload Complete". The "Transfer
 Incomplete" bubble message I refer to is the second one, not the one that
 initially shows when Cyberduck begins to re-establish the connection.

 '''When the result is Transfer Incomplete, the contents of the file on the
 server are erased.''' An example:
 - send.php is already on the server and has code in it
 - the server disconnects me and I don't know it
 - I upload a revised send.php file and it results in Transfer Incomplete
 - the version of send.php sitting on the server is now empty, ie it
 contains no characters of any kind.

 For a while I had no idea the incomplete transfer was in fact quite
 complete and very effective at changing the file on the server, though not
 in a desirable way.

 I would like to comply with your request to attach the transcript from the
 log drawer, but though the text can be selected, Copy and CTRL-C both fail
 to capture anything, and I cant find any commands in Cyberduck to export
 the log.

 Here is a small sample of the log, which I am typing in manually.
 From just before the file destroying upload...

 {{{
 226-Options: -a -1
 226 31 matches total
 CWD /
 250 OK. Current directory is /
 TYPE A
 200 TYPE is now ASCII
 PASV
 227 Entering Passive Mode (50, 62, 254 1, 196, 113)
 MLSD
 150 Accepted data connection
 type=cdir;sizd=4096;modify=20150709163016;UNIX.mode=0705;UNIX.uid=11819259;UNIX.gid=100450;unique=13g22fa2ce;
 }}}

 and a whole bunch of other entries just like that one as it lists every
 file and folder in the directory, then the final 2 lines of the log are

 {{{
 226-Options: -a -1
 226 31 matches total
 }}}

 So to sum up,
 - most of the time the server is disconnecting me (3 minute inactivity
 window),
 - all the time Cyberduck has no indication that a connection has been
 lost,
 - most of the time subsequent uploads destroy files pre-existing on the
 server.

-- 
Ticket URL: <https://trac.cyberduck.io/ticket/8923>
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