Accessing Custom Request Header fields inserted from Back end Application
Is there a way to access Custom HTTP Request Header fields that are inserted from a backend application using iRules? I am accessing a web page from the webserver that is displaying all the Request Header fields - including some custom header fields created by this application. So the header fields are present at the time this page renders.
I have been trying to use iRules to access these custom header fields, but when I dump the header, I only see the basic request header fields, none of the custom fields. I am assuming this is the case because I am querying the header from the HTTP_REQUEST event, and that this event is firing before that backend application page has inserted the custom fields into the header.
So, my question is, is there an event where I can query the header and pull these fields that the application inserted?