Configuring Azure Application Gateway for Multi tenant App service

Question

I have application1.Azurewebsites.net and application2.Azurewebsites.net and I want to use Azure Application Gateway , I followed the documentation and I was able to do it for one application but there is no documentation on how I achieve the same for more than one app, I tried multisite setup as soon as I set it up i get 400 response from the application Gateway endpoint my back end pools shows healthy status.

For the Multiple Application Set up in Gateway.

BackEnd Pool
App Services -> app1 (BackEndpool1)
App Services -> app2 (BackEndpool2)


httpsettings
setting1 => port 80 , use appservices , customprobe (httpsettings1)
setting2 => port 80 , use appservices , customprobe (httpsettings2)


Listeners
Multisite => fronendport 80 => hostname = app1 (Listeners1)
Multisite => fronendport 80 => hostname = app2 (Listeners2)

Rules 
(Listeners1) -> (BackEndpool1) -> (httpsettings1)
(Listeners2) -> (BackEndpool2) -> (httpsettings2)

Answer 1

愚蠢的我，我错过了开始为app1和app2添加应用程序网关的CName的步骤