One of my clients used to use Sockets for communicating between an AS400 and a Unix box and that worked very well.
I keep meaning to “have a go” with socket programming and have seen a lot of good press on Scott Klement’s tutorial at http://www.scottklement.com/rpg/socktut/index.html
Hope it helps
Since there have been no useful responses yet, I’ll add another useless one.
<li>You need to transfer data to your AS/400.</li><li>You don’t know what you’ll be transferring from; it’s likely to be different on a regular basis.</li><li>You can’t use the only known way to transfer data between different and unknown platforms, i.e., FTP.</li>
I don’t know why you can’t use FTP. If your boss has dictated it, then tell his/her boss that your boss is nuts and needs to be replaced. Giving you a task and simultaneously restricting you from using the only known method of doing the task is nuts.