On Oct 22, 10:48 pm, Steven D'Aprano <st...@remove-this- cybersource.com.au> wrote: > On Fri, 22 Oct 2010 22:03:38 -0700, Sean DiZazzo wrote: > > How can I assure him (and the client) that the transfer completed > > successfully like my log shows? > > "It has worked well for many years, there are no reported bugs in the ftp > code > [...]
Thanks for your advice Steven. I agree with you,and did take that approach to start with. Then the request for the actual FTP "ack" caught me off guard. I had to break out Wireshark and run a few tests just to make sure I knew exactly what I was talking about. I think I will try to explain that asking for the "ack" is not really a valid request. Something like this: "Technically, these messages are used only on the lowest level of the FTP protocol itself. Any client or library implementing FTP would be sending these messages under the covers...in this case I think its done in the socket library. It is possible that there is a bug in the Python FTP library, just like it's possible there is a bug in any other FTP client. Considering how long this library has been around (~15-20 years), and how often it is used, it is very unlikely that a bug causing a partial transfer but showing a success has managed to stick around for so long." Does that make sense? > > Is ftplib reliable enough to say that if an exception is not thrown, > > that the file was transferred in full? > > Python 2.4 is pretty old. Have you checked the bug tracker to see if > there are any reported bugs in ftplib that might be relevant? Or the > What's New for 2.5, 2.6 and 2.7? The source code for ftplib seems fairly > straightforward to me -- if there was an error, I can't see that it could > have been suppressed. > > But really, unless you can reproduce the error, I'd say the error lies > elsewhere. > > -- > Steven I'll check bugs and whats new before sending any response. The more I think about this, I am beginning to think that he is just trying to find someone to blame for a problem, and has chosen me. Thanks again. ~Sean -- http://mail.python.org/mailman/listinfo/python-list
