In testing II locally one would often want to test from another device on the same network. "localhost" is only accessible from the machine running auth-client.
If it were possible to have the server listen (either as an option or simultaneously) on 0.0.0.0 (i.e. 0.0.0.0:8080 in this case) then it would be much easier to test with multiple devices and this would greatly improve testing productivity.
In testing II locally one would often want to test from another device on the same network. "localhost" is only accessible from the machine running auth-client. If it were possible to have the server listen (either as an option or simultaneously) on 0.0.0.0 (i.e. 0.0.0.0:8080 in this case) then it would be much easier to test with multiple devices and this would greatly improve testing productivity.