Front door invoke function app for every request

Question

I have an azure front door configuration that I would like to handle requests for any path and execute a function that will either return a redirect to another path or will allow the request to continue to another origin. I am seeing a few problems, the function is only being called for the root path demo-abc.azurefd.net/ . Even though the route is configured to match /*. When I request something like demo-abc.azurefd.net/test, the function is not called and a 404 not found is returned. The second issue I am finding is that in the function, the request path is for /api/demo when I really need to know what the original requested path was, not the path of the function. Happy to provide any configuration details required!

Answer 1

@Conrad Since the request path expected by the function app is different, you will require a URL Rewrite Rule set up on Azure Front Door to forward the requests correctly.

So, a request coming to demo-abc.azurefd.net/test would be forwarded to demo-abc.azurewebsites.net/api/test.