persistence based on text in payload

i think binary scan may take a little bit more cpu. but it may give you ability to debug (or you can use string to get data to variable, then use binary scan to convert it to hex. so you can log it to verify with packet trace. after irule is verified, you can remove the debugging part)

 

 

btw, if you change to use binary scan, here is how to check:

 

assume null is 0x00 (in hex)

 

if 32-byte sessionid is null, maybe you can try something like this

 

 

if { $CliSessionId eq "0x0000000000000000000000000000000000000000000000000000000000000000" }