Character encoding problem

The client is under XCODE developed in the windows server is developed, the use of socket communication, the client sends Chinese characters to the server, garbled, I suspect that the character encoding problem, find the Internet a lot, did not find a solution way, I use that WideCharToMultiByte conversion does not work, the server VS2008 environment using multiple character sets, did not use unicode, the client is utf8, may I ask who can help solve? Thank you very much!
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The Chinese encode
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cited a floor reply:

the Chinese encode

Encode the client is it? Endocing UTF8 client is used, the key is how to convert the received server Chinese? I want the Chinese received into the database, how to know how to convert it upstairs
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utf8 turn into unicode utf8 ansi need to start and then converted to unicode ansi;
You're doing it?
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Directly in the client base64 encryption, then the solution to the server on the line. . base64 you look solved