Quote:
Originally Posted by Stefan
Using UDP would be too complex because a lot of people cannot use it and on some platforms (Facebook) it's not available. But we can check if we can improve the performance, may be sometimes the Graal server needs to handle bursts of data, so it could prioritize some.
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You don't need to use UDP on a peer-to-peer basis. UDP is available on every computer for a server-client relationship. It wouldn't work on Flash, like you said, because only TCP is exposed, but it would work 100% on iOS, Android, PC, Linux, and Mac.
Big advantage to using UDP is that you can send player positions as unreliable, which would improve the experience by a ridiculous amount.
You could also write a decent NAT punchthrough method for you to provide peer-to-peer UDP that actually works reliably across clients rather than forcing users to adhere to certain ports in the settings.