Phone as gamepad, Google TV as screen

A throwaway spike measuring whether Cast's custom-message channel is fast enough to carry gamepad input.

Register this URL in the Cast console

Paste it into the URL field of your Custom Receiver application. You only need to do this once per hosting URL — changes take ~15 minutes to propagate and want a device power-cycle afterwards.

Before you start

• Use an Android phone. iOS cannot act as a Cast web sender, in any browser.
• This page must be HTTPS for casting to work at all.
• Register your TV as a test device, or it won't appear in the picker even though normal casting to it works.
• Extra players scan the QR code shown on the TV — no extra setup.
• Stuck? Load the gamepad with ?app=default to test against Google's own receiver and find out whether the fault is your app or something upstream.