[SDL] How to know when SDLNet_TCP_Recv has no more data available, or how to specify timeout for it?

[DARKGuy .]

Yeah, is there a way to specify a timeout for SDLNet_TCP_Recv, or how to
know when there's no more data, so SDLNet_TCP_Recv doesn't stay waiting for
data to arrive? I'm thinking in using SDL threads, but I'm still not sure
how do I apply them in my case...

I've also tried to search in google but I haven't found any info about
applying a timeout either by SDL_Net or by threads...

Any help is greatly appreciated! :D

- DARKGuy
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