//根据返回的时间设置系统时间 void setTimeFromTP(ULONG ulTime) {      FILETIME ft;      SYSTEMTIME st;        //将基准时间转换成windows文件时间      st.wYear = 1900;      st.wMonth = 1;      st.wDay = 1;      st.wHour = 0;      st.wMinute = 0;      st.wSecond = 0;      st.wMilliseconds = 0;        SystemTimeToFileTime(&st, &ft);        LONGLONG* pLLong = (LONGLONG*)&ft;      *pLLong += (LONGLONG)10000000*ulTime;      FileTimeToSystemTime(&ft, &st);      ::SetSystemTime(&st);  }    void main()  {      CInitSock initSock;      SOCKET s = ::socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);      if (s == INVALID_SOCKET)      {          printf("socket error...");          return;      }      sockaddr_in servAddr = {0};      servAddr.sin_family = AF_INET;      servAddr.sin_port = ::htons(37);      servAddr.sin_addr.S_un.S_addr = ::inet_addr("69.25.96.13"); //别用210.72.145.44这个IP， 这是天朝的 常TMD不返回值      if (SOCKET_ERROR == ::connect(s, (sockaddr*)&servAddr, sizeof(servAddr)))      {          printf("connect error..");          return;      }        //接收时间      ULONG ulTime = 0;      int nRecv = ::recv(s, (char*)&ulTime, sizeof(ulTime), 0);      if (nRecv > 0)  //收到数据      {          ulTime = ::ntohl(ulTime);          setTimeFromTP(ulTime);      }      else      {          printf("recv error...");          return;      }            ::closesocket(s);      printf("*******************************");      getchar();  }