RE: losing an FTP connection

["Urbanek, Marty" <Marty_Urbanek@xxxxxxxxxxxx>]

Jodi,

I am not an FTP expert, but I will speculate a little here. Regardless of
what communications protocol you're using, unless you have a very small
amount of data, the communications devices comprising the network will
almost always have to break it down into smaller pieces, be they packets, or
blocks, or frames, or whatever. Therefore, the guy receiving the data will
usually get some of those pieces. In the event of an error partway through
the file, the receiver will have to decide what to do with the portion that
has already been received. It could keep them or discard them, depending on
the software receiving the data. I have not checked RFC959 (FTP
specification), but I have seen FTP restarts after partial transmissions,
for example using Windows FTP client to download from certain websites, so I
know that is possible. So again, I say it is the software receiving the data
that will decide what to do in the event of a failure. We know you are using
an AS/400 on one end. Is it OS/400 FTP being used (as opposed to 3rd party
FTP product), what is on the other end, and which side is the client and
which is the server? (Not that I will be able to tell you any more, but I'm
sure somebody out here will)

-Marty
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