if (run_cancelled) {

           WSASetLastError(WSAEINTR);

           break;     /* Non-blocking mode was cancelled */

       }

       len = recv(hAcceptSock, ReadBuf, read_len, 0);

       if (len == SOCKET_ERROR) {

           if (h_errno == WSAEWOULDBLOCK)

              continue;

           else

              break;

       }