send sketch to arduino via wifi I'm pretty new to arduino and need some help.

My task is to connect my UNO R3 to wifi AND then send data (sketch for blinking led) to it. 
I successfully connected my arduino with my wifi, but how do I send the sketch? 

I didn't find a tutorial for this. Do you know a good one or can you help me, please?
There is a difference between communicating via WIFI while a sketch is running or to send the sketch itself ... for the latter, I don't think there is an easy solution; you probably have to write your own AVR programmer, receiving the sketch via WIFI and store it on the Flash memory.