persistence based on text in payload

I think the concept is same as jsessionid persistent.

 

detect information from server response and add it to persistent table.

 

 

http://devcentral.f5.com/wiki/default.aspx/iRules/Weblogic_JSessionID_Persistence.html

 

 

however, jsessionid case would be easier since it is http protocol and information is in cookie.

 

 

in your case, if it is generic tcp, you may have to use irule based on TCP event, etc.

 

 

something like this

 

 

on the initial connection:

 

 

when SERVER_ACCEPTED {

 

TCP::collect

 

}

 

when SERVER_DATA {

 

let say it is at byte 20

 

persist add uie [string range [TCP::payload] 20 51]

 

}

 

 

and for the subsequent requests

 

when CLIENT_ACCECPTED {

 

TCP::collect

 

}

 

when CLIENT_DATA {

 

let say session id is at byte 100

 

persist uie [string range [TCP::payload] 100 131]

 

}

 

 

if you can share packet trace of your application, that would help