Re: Large FTP Transfer Timeout

On 22-Feb-2017 14:22 -0700, Rich Loeber wrote:

I have a large file (7GB) that I'm trying to retrieve from my
IBM i server using FTP from a PC client. I start the process and it
runs for a while. It stops and reports the number of characters
transferred but when I look on the PC, there's no file there. When I
repeat this process on a smaller file (4MB), it works just fine.

NecroPosting in reply to thread: (https://archive.midrange.com/midrange-l/201702/threads.html#01041)

Is this a timeout issue?

Very likely; a default timeout, for how long a file transfer is allowed to remain active before the connection is dropped, despite data/messages may be actively exchanging -- thus *not* a timeout due to inactivity.

How can I start the FTP process and tell it to not time out?

I'm using the command FTP window on the PC.

The IBM i FTP server accepts a STAT FTP subcommand, from which FTP 211 feedback messages will reveal what setting in seconds is the "File transfer time-out value". For example, in the client session, issue the QUOTE subcommand to pass the STAT subcommand to the server; a likeness of the resulting messages from the server appear below the request for the server to describe the "status of FTP session":

quote stat
211-FTP Server connected to remote address host ...
211-NAMEFMT set to ...
...
211-File transfer time-out value set to 420 seconds.
211 Current inactivity time-out value set to 300 seconds.


The IBM i FTP server also accepts a TIMEOUT FTP subcommand, for which a setting in seconds can be established for both the "inactivity time-out value" [an override to the INACTTIMO setting mentioned by Rob, as available from the Change FTP Attributes (CHGFTPA) command] and a "File transfer time-out value". For example, in the client session, issue the QUOTE subcommand to pass the TIMEOUT subcommand to the server; a likeness of the resulting FTP 250 messages as feedback from the server appear below an example request that might be made:

quote timeout 600 20000
250-File transfer time-out value set to 20000 seconds.
250 Inactivity time-out set to 600 seconds.