FTP Connection Time Out Auto Retry?

I am using Version 4.1.7 (Build 413). I have an automated script that puts a file on an FTP. Every now and then, I get a timeout detected. Is there something I can add to my script that will automatically retry? Here is a snippet of the log error:

. 2014-11-09 17:58:13.088 Timeout detected.
. 2014-11-09 17:58:13.088 Copying files to remote side failed.
. 2014-11-09 17:58:13.088 Connection was lost, asking what to do.
. 2014-11-09 17:58:13.088 Asking user:
. 2014-11-09 17:58:13.088 Lost connection. ("Timeout detected.","Copying files to remote side failed.","ASCII data connection for /bin/ls (154.4.6.95,53122) (0 bytes).")


Here is a sample of my script:
option batch on
option confirm off
open ftp
option transfer ascii
cd targetfolder
put *.txt
close
exit

WinSCP should automatically retry. Though I cannot tell if 4.1.7 (6 years old) supports that or not. Try the latest version.

If I install version 5.5.3, will all my batch script commands work the same?

siksol wrote:

If I install version 5.5.3, will all my batch script commands work the same?

Yes, in 99% of the cases.

You can search version history for "Change:" to find all backward-incompatible changes.
https://winscp.net/eng/docs/history
https://winscp.net/eng/docs/history_old
Though the script shown about should not be affected. It uses some obsoleted syntax (like option transfer ascii), but all of it is still supported.