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解决：Successful WSAStartup not yet performed. Error code : 10093. - c...
...没有调用 WSAStartup，或者 WSAStartup 失败。
原因：调用WSASocket等Socket函数之前必须先执行WSAStartup()初始化。
解决方法：
BOOL CxxxApp::InitInstance()
{
WSADATA wsaData;
int res = WSAStar...
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