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Mind using the code tags? It's a bitch to try to go through your code. Also, does it give any more specific compilation error than what you said?

If that's all it gives you then I really can't tell what the problem could be. My only guess is some of the settings are wrong. Did you link the library needed for sockets? Furthermore I don't see any header file included for handling sockets and such, unless windowsx.h or winuser.h includes it, never used them. Could you post the compile log? Might give a little bit more insight into this. I'm presuming you can compile other programs without problems, right?

Yes the code is a copy.And the compiler send me an error about libwsock32.a.I reinstalled and it is Ok now.Thanks COM for your time.