Irule header APM

Hi,

Your question is not clear enough for me. Are you talking about the HTTP header? Can you provide an example of what you want to do ?

Hi Nicolas,

I would like the virtualhost https://test.com headers EXEMPLE* to be preserved :

EXEMPLE_TX_ID

EXEMPLE_SPAN_ID

EXEMPLE_PARENT_SPAN_ID

Regards,

up

Hi,

To make it more clear (your question) you want the BIG-IP not to make any changes to the EXAMPLE_TX_ID and EXAMPLE_SPAN_ID header?

Cheers,

Kees

Hi Kees,

That's right

Regards,

Hi Jean,

My apologize for this late answer. Do you have an ASM profile attached to your vHost/VS? Because the default behavior of HTTP profile in LTM is to preserve client headers normally, your issue should not happen.

You can try this iRule otherwise (not tested):

when HTTP_REQUEST {
    set HEADER1 [HTTP::header "EXAMPLE_TX_ID"]
    set HEADER2 [HTTP::header "EXAMPLE_SPAN_ID"]
}
 
when HTTP_REQUEST_SEND {
    if [string length $HEADER1] {
         HTTP::header replace "EXAMPLE_TX_ID" $HEADER1
        }
    if [string length $HEADER2] {
            HTTP::header replace "EXAMPLE_SPAN_ID" $HEADER2
        }
}

To get the above irule to work with APM you need to add:

when CLIENT_ACCEPTED {
    ACCESS::restrict_irule_events disable
}

The APM has it's own HTTP server and bypasses the LTM HTTP server.

Cheers,

Kees

Thank you Nicolas & Kees for your return.

the http profil i'm use is http-xff. I adapted your irule to force the insertion of the header and it works.

 when I try to apply the irule to the vhost with your code in addition i can't apply it : 01070394:3: ACCESS::restrict_irule_events in rule (/HorsProd/header_APM_test_horsprod) requires an associated ACCESS profile on the virtual server (/HorsProd/Example_VHOST_443)

Regards,

Hi Jean,

So your not using APM (as stated in your subject of this question)

But good to see you got it working in the end.

Cheers,

Kees