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FTP "Connection failed" and "interoperability error" on upload, sync in v7.9.0 #11674

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cyberduck opened this issue May 16, 2021 · 1 comment
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bug duplicate ftp FTP Protocol Implementation
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@cyberduck
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84bf2a5 created the issue

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.

Additional note: the issue with upload may only occur after a sync has failed (with one of the errors above) - need to test this further.


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@cyberduck
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84bf2a5 commented

Further testing suggests that it's the sync process that causes the issue and it could be related to issue #11676, as in 7.9.0 it appears to take much longer to perform each operation of the sync and that could be what results in the "connection failed" and "interoperability error" issues. Attempting an upload after that has occurred is then likely also erroring due to the previous failure on the connection to the server.

@iterate-ch iterate-ch locked as resolved and limited conversation to collaborators Nov 27, 2021
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