C / C++ / MFC

SOCKET fds[MAX_SOCKETS];
struct sockaddr_in ads [MAX_SOCKETS];
for (int nNumConnections = 0; nNumConnections < 3; nNumConnections++)
{
    ads[nNumConnections].sin_addr.s_addr = inet_addr(lpszIpAddr);
    ads[nNumConnections].sin_family = AF_INET;
    ads[nNumConnections].sin_port = htons((unsigned short) (nPort[nNumConnections]) );
}


fd_set writeFDS,exceptFDS;
FD_ZERO (&writeFDS);
FD_ZERO (&exceptFDS);
int nMaxFd = 0;

int nSocketCount = 0;
for (int i = 0; i < 3; i++)
{
    fds[i] = socket( AF_INET, SOCK_STREAM , IPPROTO_TCP );
    // Set the socket in non-blocking mode
    // flag for blocking mode
    unsigned long setBlocking = 1;
    if ((ioctlsocket (fds[i], FIONBIO, &setBlocking)) != 0)
    {
        return -1;
    }
    int nResult = connect(fds[i], (SOCKCONST sockaddr *) &ads[i], sizeof (ads[i]));
    if (nResult == 0)
    {
        if (fds[i] >= nMaxFd) nMaxFd = fds[i] + 1;
        FD_SET (fds[i], &writeFDS);
        FD_SET (fds[i], &exceptFDS);
        nSocketCount ++
    }
    else if (nResult == SOCKET_ERROR)
    {
        if(WSAGetLastError() == WSAEWOULDBLOCK)
        {
            if (fds[i] >= nMaxFd) nMaxFd = fds[i] + 1;
            FD_SET (fds[i], &writeFDS);
            FD_SET (fds[i], &exceptFDS);
            nSocketCount++;
        }

    }
}

cout << "Socket count in the FD_SET :" << nSocketCount;

if (nSocketCount > 0)
{
    struct timeval tv;
    tv.tv_sec = 60;
    tv.tv_usec = 0;

    nSelectStatus = select (nMaxFd, NULL, &writeFDS, &exceptFDS, &tv);

    cout <<"Return value of select :" << nSelectStatus;

    if (nSelectStatus <=0 || nSelectStatus == SOCKET_ERROR)
    {
        // timeout or other error
    }
    else
    {
        for (int i = 0; i < 3; i++)
        {
            if (FD_ISSET (fds[nIndex], &exceptFDS))
            {
                // exception associated with the socket fds[nIndex]
            }
            else if (FD_ISSET (fds[nIndex], &writeFDS))
            {
                // socket fds[nIndex] is ready to send the data
            }
        }
    }
}//if (nMaxFd > 0)

return 0;
}

......<br />
UpdateData();<br />
m_strEdit = "one"+"\n"+"two";<br />
UpdateData(false);<br />
......