I have an app service plan with 3 app services with Private endpoints for all the 3 apps. Front end calls--> Middleware calls --> back end
calls from Middleware to back-end fails, I don't see any error in the Application logs or log stream of the Middleware, just a log message which says the back end is called.
When I access the backend url directly from the browser I get a response.
e.g https://backend.azurewebsites.net/hello
response "Hello"
From kudu bash of the middleware when I try tcpping backend.azurewebsites.net:443 I get
Bad destination address
curl command to the backend from middleware fails with 403 Forbidden Error
curl https://backend.azurewebsites.net/hello --> 403 Forbidden Error.
Middleware is Docker container on Linux, Backend run time stack Java 8, Java Web Server Stack - JAVA SE (Embedded Web Server) on Linux
Any guidance on what I'm missing here would be a great help.