What to use

Hi,

The basic command you'll need will be :

TCP::collect and TCP::payload: they will give you the capability to analize network packets: Click here, Click here

persist uit to create persistency on the string you want to make persistency on: Click here

when CLIENT_ACCEPTED {
    TCP::collect 44   
}
when CLIENT_DATA {
   set ConStr [TCP::payload 44]
   set SessionID [substr [getfield $ConStr "@" 2] 0 " CHID" ]
   log local0.info $SessionID
   if { $SessionID equals "" } {
       No SessionID, just load balance as usual
      log local0.info "No session ID, load balancing the connection."  
      pool YOUR_DEFAULT_POOL_NAME
   } else {
       All clients with this SessionID go to this server
       timeout is 120 seconds
      persist uie $SessionID 120
   }
}