[tahoe-dev] Exception connecting to FTP interface

[David-Sarah Hopwood]

On 25/11/11 14:44, Adrian Georgescu wrote:
> Hello,
> 
> When accessing the FTP interface, I get this exception on the node in case of connectivity issues between the node and introducer locations.
> 
> 2011-11-25 15:29:57+0100 [ProtocolWrapper,14,85.17.186.5] Starting factory <twisted.protocols.ftp.DTPFactory instance at 0xb15602c>
> 2011-11-25 15:29:57+0100 [Uninitialized] DTPFactory.buildProtocol
> 2011-11-25 15:29:57+0100 [Uninitialized] cancelling DTP timeout
> 2011-11-25 15:29:57+0100 [-] Unexpected FTP error
> 2011-11-25 15:29:57+0100 [-] Unhandled Error
>         Traceback (most recent call last):
>           File "/usr/lib/python2.6/dist-packages/twisted/internet/base.py", line 796, in runUntilCurrent
>             call.func(*call.args, **call.kw)
>           File "/usr/lib/python2.6/dist-packages/foolscap/eventual.py", line 26, in _turn
>             cb(*args, **kwargs)
>           File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line 318, in callback
>             self._startRunCallbacks(result)
>           File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line 424, in _startRunCallbacks
>             self._runCallbacks()
>         --- <exception caught here> ---
>           File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line 441, in _runCallbacks
>             self.result = callback(self.result, *args, **kw)
>           File "/usr/lib/pymodules/python2.6/allmydata/mutable/filenode.py", line 325, in _once_updated_download_best_version
>             raise UnrecoverableFileError("no recoverable versions")
>         allmydata.mutable.common.UnrecoverableFileError: no recoverable versions
> 
> 2011-11-25 15:29:58+0100 [ProtocolWrapper,12,95.97.50.27] cleanupDTP
> 
> Debian System
> ii  tahoe-lafs                          1.8.3-2                             Secure distributed filesystem
> 
> Is this normal or expected behavior?

It's a known bug that the FTP frontend does not report errors to the FTP
client well; see <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/1081> for
the upload case. I don't think there's a corresponding ticket for download.
How exactly did this error appear in your FTP client?

Also, a connection error should probably be reported with a more specific
error than "no recoverable versions" for mutable downloads.

-- 
David-Sarah Hopwood ⚥ http://davidsarah.livejournal.com

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