[Q] Giving root access to an application that does not ask it.

Hi everyone!

First, I want to thanks for the great help you give me with all the other thread I found on XDA!

But for now I have a think that's giving me headache.

I am searching how can I give root access to any application from google play or from anywhere.
The reason is that I want to use an application that create a web server and can access cache(which is only possible with root access).
Because I need an other device to connect to the server and use this files.

The application is "Web Server ultimate" but I does not have root access.

Is it possible to give this app root access? if Yes how? and if not do you have any other idea?

Thanks

Note : The application that need the file is created with Corona SDK and this cannot be change.