persistence based on text in payload

Thanks,

 

 

Here's what I have so far:

 

 

when CLIENT_ACCEPTED {

 

log local0. "Buildup -- collecting client data"

 

TCP::collect 60 0

 

set server_hold 0

 

}

 

when SERVER_CONNECTED {

 

log local0. "Buildup -- collecting server data"

 

TCP::collect 60 0

 

set server_hold 1

 

}

 

when CLIENT_DATA {

 

set CliSessionId [string range [TCP::payload] 22 53]

 

log local0. "Clisession ID is $CliSessionId"

 

if {[string is alnum $CliSessionId] == 1} {

 

log local0. "This is an existing connection"

 

persist uie $CliSessionId

 

event disable all

 

}

 

elseif {$server_hold == 1} {

 

log local0. "This is a new Session - passthrough"

 

}

 

TCP::release

 

}

 

when SERVER_DATA {

 

set SvrSessionId [string range [TCP::payload] 22 53]

 

log local0. "Svrsession ID is $SvrSessionId"

 

persist add uie $SvrSessionId

 

TCP::release

 

event disable all

 

}

 

 

I can see in the log that it's working as I would expect except new TCP sessions referencing the session id are just load balanced between multiple servers - they do not persist to the previous server.

 

 

I'm sure this is something basic that I've missed, maybe how I applied the iRule? Or am I not using the persist command correctly?

 

 

I tried applying the iRule directly to the virtual server with persistence set to 'None', and I tried to create a new persistence profile referencing the iRule (based on universal), but it still doesn't work.

 

 

Any help would be appreciated.

 

Thanks.