Need to modify Citrix ICA file

We are currently using an iRule with a stream replacement to modify our Citrix ICA files. Our scenario differs in that we know the exact string. You'll have to do the regex to get yours to replace it. If I read this correctly, it's the ICA in the response file that has the ClientName in it. So the examples in this should help you.

https://devcentral.f5.com/wiki/irules.STREAM__expression.ashx

But the stream has worked extremely well for us in our implementation. Being that it is only on the ICA file transmission and login the iRule doesn't get called often.

One last thing, when doing our Citrix implementation we didn't use the iApp, but we also did not run into the problem you're seeing. Is it possible that sending the X-forwarded-for might alleviate this problem for you?

Jason