네트워크 초기화 상태 감지

HRESULT InitializeNetworkingDependencies()
{
    XNetworkingConnectivityHint connectivityHint{};
    HRESULT hr = XNetworkingGetConnectivityHint(&connectivityHint);
    if (FAILED(hr))
    {
        return hr;
    }

    if (!connectivityHint.networkInitialized)
    {
        // Try again after your title receives a connectivity change notification.
        return E_PENDING;
    }

    WSADATA wsaData{};
    int winsockResult = WSAStartup(MAKEWORD(2, 2), &wsaData);
    if (winsockResult != 0)
    {
        return HRESULT_FROM_WIN32(winsockResult);
    }

    return S_OK;
}

bool IsNetworkInitialized()
{
    XNetworkingConnectivityHint connectivityHint;
    if (SUCCEEDED(XNetworkingGetConnectivityHint(&connectivityHint)))
    {
        return connectivityHint.networkInitialized;
    }
    return false;
}

static
void
NetworkConnectivityHintChangedCallback(
    _In_ void* context,
    _In_ const XNetworkingConnectivityHint* connectivityHint
    )
{
    HANDLE networkInitializedEvent = static_cast<HANDLE>(context);
    if (connectivityHint->networkInitialized)
    {
        (void)SetEvent(networkInitializedEvent);
    }
}

HRESULT EnsureNetworkInitialized()
{
    HRESULT hr = S_OK;
    XNetworkingConnectivityHint connectivityHint;
    XTaskQueueHandle queue;

    hr = XTaskQueueCreate(XTaskQueueDispatchMode::Immediate, XTaskQueueDispatchMode::Immediate, &queue);
    if (SUCCEEDED(hr))
    {
        // Use the new XNetworking APIs to check if the network is initialized.
        hr = XNetworkingGetConnectivityHint(&connectivityHint);
        if (SUCCEEDED(hr))
        {
            if (!connectivityHint.networkInitialized)
            {
                // The network isn't initialized. Wait until the network becomes initialized.
                HANDLE networkInitializedEvent = CreateEvent(nullptr, TRUE, FALSE, nullptr);
                if (networkInitializedEvent != nullptr)
                {
                    XTaskQueueRegistrationToken token;
                    hr = XNetworkingRegisterConnectivityHintChanged(queue, networkInitializedEvent, NetworkConnectivityHintChangedCallback, &token);
                    if (SUCCEEDED(hr))
                    {
                        DWORD result = WaitForSingleObjectEx(networkInitializedEvent, INFINITE, FALSE);
                        if (result != WAIT_OBJECT_0)
                        {
                            hr = HRESULT_FROM_WIN32(GetLastError());
                        }

                        XNetworkingUnregisterConnectivityHintChanged(token, true);
                    }

                    CloseHandle(networkInitializedEvent);
                }
                else
                {
                    hr = HRESULT_FROM_WIN32(GetLastError());
                }
            }
        }

        XTaskQueueCloseHandle(queue);
    }

    return hr;
}

XNetworkingConnectivityHint connectivityHint;
if (SUCCEEDED(XNetworkingGetConnectivityHint(&connectivityHint)))
{
    printf(L"network initialized %u\n", connectivityHint.networkInitialized);
    printf(L"network connectivity level hint %u\n", connectivityHint.connectivityLevel);
    printf(L"network connectivity cost hint %u\n", connectivityHint.connectivityCost);
    printf(L"network approaching data limit %u\n", connectivityHint.approachingDataLimit);
    printf(L"network over data limit %u\n", connectivityHint.overDataLimit);
    printf(L"device is roaming %u\n", connectivityHint.roaming);
    switch (connectivityHint.ianaInterfaceType) {
    case IF_TYPE_ETHERNET_CSMACD:
        printf(L"network type is wired\n");
            break;
    case IF_TYPE_IEEE80211:
        printf(L"network type is wireless\n");
        break;
    case IF_TYPE_WWANPP:
    case IF_TYPE_WWANPP2:
        printf(L"network type is broadband\n");
        break;
    default:
        printf(L"network type is unusually esoteric %u\n", connectivityHint.connectivityLevel);
        break;
    }
}