Session Persistence based on http header value using iRule

[Mohanad]

Hello

Kindly i need to apply Session Persistence based on http header :

Payment application working as follow:

1. At first request (Login) the server response with http header named "X-Token" with "fb9c2bb6-80f6-16c3-afcd-84e98976a4b7"
2. The rest of http requests will have header name "X-Auth-Token" with the same value "fb9c2bb6-80f6-16c3-afcd-84e98976a4b7" assigned by the server

I want to make sure that the client land on the same server that sent the "X-Token"

I searched for iRule that match the http header, the following iRule will work or need to modify it?

when HTTP_REQUEST {
    if { [HTTP::header exists "X-Auth-Token"]} {
        persist uie [HTTP::header "X-Auth-Token"]
    }
}

Q

[oguzy]

Hi Mohanad,

Your irule seems correct. Maybe you can add a fallback persistence in an else condition.

According to the article (Overview of universal persistence (f5.com), in addition to your irule, you should also create a universal persistence profile as follows:

To create a universal persistence profile and reference the persistence iRule you created in the previous procedure, perform the following procedure:

1. Log in to the Configuration utility.
2. Navigate to Local Traffic > Profiles.
3. From the Persistence menu, click Create.
4. Type a name for the universal persistence profile.
5. For Persistence, click Universal.
6. For Configuration, select the iRule check box, then click the persistence iRule you created.
7. Click Finished.

[Mohanad]

Thank you Oguzy, i know this requires persistence profile

[xuwen · Accepted solution]

when HTTP_RESPONSE {

if { [HTTP::header exists "X-Token"] } {

if { [HTTP::header "X-Token"] != "" } {

persist add uie [HTTP::header "X-Token"]

}

}

}

when HTTP_REQUEST {

if { [HTTP::header exists "X-Auth-Token"] } {

set value [persist lookup uie [HTTP::header "X-Auth-Token"]]

log local0. "value is $value"

if { $value != "" } {

persist uie [HTTP::header "X-Auth-Token"]

}

}

}

[Mohanad]

Thank you so much xuwen, i will test it out and feedback

[Mohanad]

working successful! thank you so much xuwen