Trying to write an irule which inspects url parameters to select the appropriate pool

Now if I remember right, to use cookie persistence where the pools foo1 and foo2 have different members, I need to use oneconnect as well on the virtual server. Do you agree? are you talking about this one?

sol9800: Using an iRule to load balance HTTP requests to multiple pools

http://support.f5.com/kb/en-us/solutions/public/9000/800/sol9800.html

well, i think using oneconnect is fine.

Also what will be the difference in setting cookie after the parameter matches, instead of defining it at the virtual server definition? i got an error.

[root@ve1024:Active] config  b rule myrule list
rule myrule {
   when HTTP_REQUEST {
        if { [HTTP::query] ends_with "1" } {
                persist cookie
                pool foo1
        } elseif { [HTTP::query] ends_with "2" } {
                persist cookie
                pool foo2
        } else {
                pool foo
        }
}

when SERVER_CONNECTED {
        log local0. "[IP::client_addr]:[TCP::client_port] -> [clientside {IP::local_addr}]:[clientside {TCP::local_port}] -> [IP::remote_addr]:[TCP::remote_port]"
}
}
[root@ve1024:Active] config  b virtual bar list
virtual bar {
   snat automap
   destination 172.28.19.79:80
   ip protocol 6
   profiles {
      http {}
      tcp {}
   }
}

[root@ve1024:Active] config  b virtual bar rule myrule
BIGpipe unknown operation error:
   01070372:3: Persistence mode (Cookie) called out in rule (myrule) requires a corresponding persistence profile for virtual server (bar).