Method WSInit

external/cpp-httplib/httplib.h:4290–4293

        class WSInit {
        public:
            WSInit() {
                WSADATA wsaData;
                if (WSAStartup(0x0002, &wsaData) == 0) is_valid_ = true;
            }

            ~WSInit() {
                if (is_valid_) WSACleanup();