一些有用的链接
http://msdn.microsoft.com/en-us/library/system.net.sockets.socket.aspx
http://www.developerfusion.com/article/3918/socket-programming-in-c-part-1/
http://msdn.microsoft.com/en-us/magazine/cc300760.aspx
http://en.wikipedia.org/wiki/Stream_socket
http://beej.us/guide/bgnet/output/html/multipage/theory.html
希望有所帮助!