Example socket programming in iphone [closed]

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I am learning objective C.I like to know about client/server(socket) programming for iphone. I went through many answers,but still having many confusion with that flow and working.Can anyone 开发者_StackOverflow社区help me out with code.

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Using CoreFoundation's CFStreams

Using raw sockets on the iPhone

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Go through this you will have to get basic idea of socket programming

http://ichuiphonedev.blogspot.in/2012/07/a-basic-idea-of-socket-programming-in.html