[Twisted-Python] Ftp client

Andrew Bennetts andrew-twisted at puzzling.org
Thu Aug 4 08:44:13 EDT 2005

On Thu, Aug 04, 2005 at 11:30:43AM +0200, Michele Petrazzo wrote:
> Andrew Bennetts wrote:
> >>>Before connecting, can you add:
> >>>
> >>>FTPClient.debug = True
> >>>
> >>>Then we can see a full transcript of what's going on.
> >>>
> >>
> >>I add that line, but I can't see any new line except that I already
> >>seen
> >
> >
> >Odd.  It should log everything.
> Strange. Do you want that I change something to understand the problem?
> This happen also with the demo "ftpclient.py"!

If you can figure out why, I'd be happy, but I don't have time to
investigate right now (I'm quite busy atm, which is why my replies are so
brief, sorry).

> >>But what I receive is an empty file list
> >Perhaps FTPFileListProtocol can't parse your file listing -- it tries
> >to parse stuff more-or-less like:
> >
> >-rw-r--r--   1 root     other        531 Jan 29 03:26 README
> >
> >If you have another format, you'll need to write your own.  As a
> >starting point, you could try:
> >
> >class LineRecorder(basic.LineReceiver): def connectionMade(self): 
> >self.lines = [] def lineReceived(self,line): self.lines.append(line)
> >
> >Alternatively, subclass FTPFileListProtocol and override the
> >unknownLine method.
> With unknownLine overwritten I receive all the data correctly.
> What the are more right way (the advice method) to proceed? Simple
> override that method or create a new HylafaxFTPFileListProtocol ?

Create a new HylafaxFTPFileListProtocol would be simplest, I think.

> >Sorry, I was too hasty here -- you also need to change your errback
> >to print failure.subFailure or perhaps failure.subFailure.subFailure
> >rather than just failure.
> After some code tries, I receive this response:
> user login that has no password : [1]

Ok, so your FTP server requires a password.

> user login with password, list of not exist directory: [2]

Great, thanks for that output.

> Like you can see, I must find the return errors inside the failure
> instance at two differents point (I believe because, like you wrote,
> there are several layers). You think that this "problem" will be fixed
> in the future, for make the error more simple to understand?

Yes, it will, I'll file a bug on it so that I don't forget.  Thanks for
uncovering it!

> I attach a diff file that solve my problem with the empty password and
> the "PASS" command. For me it work well. I'll very happy if you include
> my patch!

Interesting.  Please file this at http://twistedmatrix.com/bugs, assign to
spiv.  Also, please use unified diffs ("diff -u") if you can.

I think perhaps passing password=None might be a better way than
sendPass=False, I'll think about it.

Thank you very much!


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