hi everyone,
i'm making a smartphone application for control a BSP.
i've already written custom routes and functions
i created a Node.js Server for addictional routes, but i need to upload file
when i try to use the /UploadFile request (that calls FIlePosted method) i have CORS error from my device

This happens ONLY from smartphone
if I call this from browser it works.. why!?
how can i solve it?
where i can put Access-Control-Allow-Origin; * header??
thanks for helping me,Luca