Someone know if in Cocoa there is a Socket Control like in Real Basic? Thanks

Nope. However there exists a socket framework called SmallSockets that will do the dirty work for you. Do search on SourceForge after "SmallSockets" and download that.

I've been using that for an irc client I've been trying to make.

You can hook up an NSSocket to a bsd socket. You have to do a little lifting, but then it works pretty nicely.

You also can use CFSockets.

Wade

I've never used Real Basic, but for C/C++ I used OpenPlay for networking. It's open-sourced by apple and cross platform.