Thank you for all the votes and feedback. We have started work on this and the capability will be supported soon. If you would like to get in touch with us to discuss your scenarios, please fill this form: https://aka.ms/ApplicationGatewayCohortBen Gelens commented
Can anyone shim in on this?
We are currently blocked on a project by this functionality not being in place yet.
My customer has this design where their app is broken up into multiple Web apps which must all fall into one root uri namespace due to authentication / authorization provider demands.
So a client would hit the WAF, be served the root.uri and depending on having been authenticated / authorized yes or no, would be send to rout.uri/login which is in fact another web page.
So root.uri/login should be rewritten with login.internal.web or something so the front-ends of the ASE know what to serve up.
We got this working with barracuda WAF appliance but the customer wants application gateway WAF.