Why I ask? Dealing with the UltraPeer system. I don't want to keep starting new threads for every connections that I get when my client become an ultrapeer or not. So I know that non blocking and multiplexing is better, but with this I have to code alot more for this. And other words too many threads will slow your down your client. I want my client to save on cpu, memory, and etc. as much as possible.