Cookie Persist with iRule enforced pool member selection

If your goal is just to persist based on a HTTP header information (like cookie) that is decided based on the 1st HTTP request, you can do something like this:

when HTTP_REQUEST {
if { ([HTTP::header header SERVER] ne "") } {



} else {


            { HTTP::header insert SERVER 
              pool POOL_WEB member 10.10.10.10 80 }
} 

For cookie encoding related coding, see this link and this link.