这是我在EVC下的SOCKET代码，并含有多播代码，感谢网络，我把原本VC下的移植到EVC下的，里面有些地方是需要注意的，请看代码-EVC in the socket code, and includes multicast code for network, I originally under the VC transplanted to the EVC, there is some need to pay attention, take a look at code