[Twisted-web] FTP: DTPFactory timeout - does an unhandled exception imply a problem?

Tom Sheffler tom.sheffler at gmail.com
Mon Oct 31 13:20:29 EDT 2011

I'm experimenting with the FTP protocol and noticed the following during
certain timeout conditions.

My first question is: when an unhandled exception occurs, do things get
cleaned up properly, or is this an indication that we're losing memory or


Here is an excerpt:

2011-10-31 10:14:04-0700 [-] timed out waiting for DTP connection
2011-10-31 10:14:04-0700 [-] Unexpected FTP error
2011-10-31 10:14:04-0700 [-] Unhandled Error
Traceback (most recent call last):
Failure: twisted.protocols.ftp.PortConnectionError: DTPFactory timeout
2011-10-31 10:14:14-0700 [ProtocolWrapper,0,] cleanupDTP
2011-10-31 10:14:14-0700 [ProtocolWrapper,0,] <<class
'twisted.internet.tcp.Port'> of twisted.protocols.ftp.DTPFactory on xxx>
2011-10-31 10:14:14-0700 [ProtocolWrapper,0,]

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