insert HTTP header according to a value received in Radius accounting

Hi experts,

 

Now that I got this working I need to further complicate things :)

 

(It is not really related to this topic... I'll open a new thread if required).

 

 

I'd like that the HTTP request will trigger an LDAP query by the F5 towards an LDAP server to retrieve some information related to the MSISDN (reminder: the MSISDN was obtained from the Radius, it doesn't appear in any HTTP header that arrived in the client's HTTP request) and to insert the information retrieved from the LDAP to an HTTP header.

 

it is important that only the very first HTTP request by the user (first one after the Radius Start) will trigger the LDAP query as I don't want to overload the LDAP server.

 

 

Is this doable?