Greetings!

First off, I'm running Perl v5.10.1 on AIX 7.1. The script I'm having trouble with has worked for years. What has changed is our proxy server.

We are having timeout issue, though probably not the type you are thinking about. It isn't a case of connectivity loss that the timeout value could help.

What appears to be happening is that the command channel isn't sending any packets while we are transferring a large file on the data channel so the proxy server, an IBM DataPower, is dropping that command channel after 2.5 minutes. The upload continues to work and the file completes being sent, but since the port 21 connection was torn down it is seen as a failure.

No one on our staff nor IBM can come up with a setting that helps this. This does not happen when using the command line ftp on AIX or Linux, only with Net::FTP.

Is there some way to tell Net::FTP to send some kind of keep-alive packet every x seconds down that command channel?

Any thoughts would be greatly appreciated.

--Zeke

In reply to Net::FTP timeout - Command channel issue by zekeb

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