Hello, RGC Codders!
I have suggestion on how to make it at least difficult about botnet masters ddos your hostbots and platform.
Ok so the main think in ddos is flood,right?
Bots join rgc and start sign over and over again which make your hostbots hostgames.If i remmeber right each hostbot(at least this onces we were using on GGC) can host arround 10 games at the same time.
You can put some timeperiod between Signing in games( Like 5 seconds).This will make the flood at least bearable for your hostbots (Also it will be rly usefull also in the late hours when big amount of users use one room
).
The other suggestion is to implement some kind of captcha !? (
http://en.wikipedia.org/wiki/CAPTCHA )
But take care with choosing the most pleasent way for users to differentiate ppl from flooding bots cuz making them each time to write blablalba will be annoying i guess.
Best of luck,
n1ce0ne!