How to implement 'remote screenshot' feature in SMIL script?

Supported models: 

Player side:
With this feature, user can capture the screen remotely in specific duration.
To apply this feature on players, user has to have "Remote-Screenshot.wgt" in SMIL script.
Please find the SMIL sample file (SMIL.zip) within the widget in the attachment.

Server side:
As the widget passes the data via HTTP request to server, server will need the mechanism to receive the request and save it as JPG/PNG file.
Here is the the sample code (remote_screenshot_notes.txt) and explanation of how the widget sends the data to server and how the server receives the data.