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Sam10's avatar
Sam10
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Jun 24, 2020

http cookie persistence

I have an application . When users makes a connection for the first time , server hands over a cookie to the user , when the user comes with the same cookie traffic should go to the same backend node which handed over the cookie.

If the cookie value is session1 , request need to go to node1, If cookie value is session2 request need to go to node2. This is the logic i am trying to work on , it would great help if i can get an irule for this .

 

when HTTP_REQUEST {

 if { [HTTP::cookie exists "SESSION1"] } {

 node 1

 } else {

 if { [HTTP::cookie exists "SESSION2"] } {

 node 2

 }

 else pool default pool

 }

}

application delivery
iRules
LTM

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  • Sam10's avatar
    Sam10
    Icon for Altostratus rankAltostratus
    Jun 25, 2020

    Bellow are the 2 irules i tried an no luck ,experts any help on this .

     

     

    when HTTP_REQUEST {

     if { [HTTP::cookie exists "EO_SESSION_ID"] } {

     persist uie [HTTP::cookie "EO_SESSION_ID"] 3600

     } else {

     set jsess [findstr [HTTP::uri] "EO_SESSION_ID" 1 ";"]

     if { $jsess != "" } {

     persist uie $jsess 3600

     }

     }

    }

    when HTTP_RESPONSE {

     if { [HTTP::cookie exists "EO_SESSION_ID"] } {

     persist add uie [HTTP::cookie "EO_SESSION_ID"] 3600

     }

    }

     

     

     

    Tried even with switch statement.

     

     

    when HTTP_REQUEST {

      switch [string trimleft [HTTP::cookie EO_SESSION_ID] cookie] {

      "cookie1" {

          pool prod-pool member 192.168.1.1 5700

      }

      "cookie2" {

         pool prod-pool member 192.168.1.2 5700

      }

      default {

         pool prod-pool

      }

      }

    }

     

     

    Instead of irule can i use cookie hash persistence.