BigIP does not encrypt application cookies

I was able to resolve the "Illegal argument. Can't execute in the current context" messages. I created another iRule and moved all my cookie handling code there. I then stacked it on my VIP's resources screen. Now the code seems to be working.

 

 

The second issue turned out to be that there were multiple cookies by the same name but for different domains. My code was acting on the first cookie it saw which of course was the wrong cookie. Fortunately, it was safe to delete the first cookie because it was not relevant to my sessions. Now the rules act on the correct cookie and all is well.

 

 

So, look for multiple cookies by the same name and try a second iRule if your code generates errors.