Is it possible to use F5 as proxy/reverse proxy server?

I need some help. I'm new in i-Rule configuration and tcl script.

 

 

I have 2 external data groups : host_map and crp_map

 

 

in host_map have this content:-

 

"crp.domainname.com crp_map"

 

 

and in crp_map have this content :-

 

"/ /index.jsp CRP_Pool"

 

 

 

First I want to map HTTP::host to crp.domainname.com if it equals

 

I want to use i-Rule to check in another datagroup name "crp_map" that writen after the host like this

 

 

 

set loop 0

 

set max [llength $::host_map]

 

while {$loop < $max} {

 

set tmpstr [lindex $::host_map $loop]

 

scan "%s%s" $tmpstr host data

 

if {[HTTP::host] == $host} {

 

<<>>

 

 

I try to set like :

 

 

$::$datagroup

 

$"::$datagroup"

 

$::{$datagroup}

 

 

and many ways. but it didn't work.

 

 

anyone can help me? or know another way to refer to datagroup than $::

 

 

thank you.