C / C++ / MFC

1000,1002, 120008, 1318001,14702 , 4003...

12002 <- 4001 <- 10089 <- 5007 <- ... 

read data -> already in sequence, discard/ new data -> sequence

Hi,

I am writing an application to receive a data from adapter. Adapter is brodcasting UDP data.
So in my case I have two adapter which is connected to same router having following IP information -
1. Adapter 1 :-
   IP                   : 192.168.1.32
   Default Gateway  : 192.168.1.1
   Subnet Mask      : 255.255.255.0
2. Adapter 2 :-
   IP                   : 192.168.4.33
   Default Gateway  : 192.168.4.1
   Subnet Mask      : 255.255.255.0

Here is the router detail :

Default Gateway     : 192.168.1.1
Subnet Mask             : 255.255.255.0

PC is also connected to same router.
Application written in C++ is configure to receive data from any IP address.
m_nFamily           = AF_INET;
m_nType         = SOCK_DGRAM;
m_nProtocol         = IPPROTO_UDP;
m_SockAddr.sin_addr.s_addr  = INADDR_ANY;
m_SockAddr.sin_family   = AF_INET;

In my case I can receive data coming from Adapter 1 but can not receive data coming from Adapter 2.
But the data coming from both the adapter I can see in Wireshark.

Work around to receive data from Adapter 2 :  To receive data from adapter 2, I need to change the wireless network connection property for IPV4 and need to change "obtain IP address automatically" to "Use the following address":
Used following data to configure manually :
   IP                   : 192.168.4.31
   Default Gateway  : 192.168.4.1
   Subnet Mask      : 255.255.255.0

But after doing this application don't see the message coming from adapter 1.
But the data from both the adapter can be seen in wireshark.

My goal is to receive data from both the adapter simultaneously.

#pragma data_seg (".SHARED")
    HHOOK g_hPreviousMsgHook = 0;
    HINSTANCE g_hInstance = 0;
#pragma data_seg()
#pragma comment(linker, "/SECTION:.SHARED,RWS")

BOOL CSoundDllApp::InitInstance()
{
    CWinApp::InitInstance();
    g_hInstance = AfxGetInstanceHandle();
    return TRUE;
}

BOOL InstallWinHook()
{
    BOOL bReturn = TRUE;
    g_hPreviousMsgHook = SetWindowsHookEx(WH_GETMESSAGE, 
                             &MsgHookProcedure, g_hInstance, 0);
 
    if(NULL == g_hPreviousMsgHook)
    {
        bReturn = FALSE;
    }
    return bReturn;
}

LRESULT CALLBACK MsgHookProcedure(int nCode, WPARAM wParam, LPARAM lParam)
{
    if(0 > nCode)
        return CallNextHookEx(g_hPreviousMsgHook, nCode, 
                                         wParam, lParam);
    PMSG data = (PMSG)lParam;

    switch(data->message)
    {
    case WM_POINTERDOWN:
       Beep(0x7fff, 1000);
    break;
    }
    return CallNextHookEx(g_hPreviousMouseHook, nCode, wParam,   
                                                 lParam);
}

        auto previousMode = _setmode(_fileno(stdout), _O_U16TEXT);
std::wifstream wifs;
wifs.imbue(std::locale(wifs.getloc(), new std::codecvt_utf16<wchar_t, 0x10ffff,
    std::codecvt_mode(std::little_endian | std::consume_header)>));
wifs.open(L"F:\\重要网址.txt", std::ios_base::binary);

std::wstring line;
std::getline(wifs, line);

wcout << line << endl;
wifs.close();

wcout << endl;
cout << "∦" << endl;

std::wofstream wofs;
wofs.imbue(std::locale(wifs.getloc(), new std::codecvt_utf16<wchar_t, 0x10ffff,
    std::codecvt_mode(std::little_endian | std::consume_header)>));
wofs.open(L"F:\\iMoney.txt", std::ios_base::binary | std::ios_base::ate);
wofs << line << endl;
wofs.close();
//it's important to restore mode to previous, otherwise std::cout will cause crash
_setmode(_fileno(stdout), previousMode);