使用WinInet上传HTTP

Question

我正在使用WinInet库进行http（PUT）上传，在WinXP上工作正常，但在Win7上它不起作用，奇怪的是＆＃39; InterWriteFile＆＃39; WinInet文件的功能返回true。任何帮助将不胜感激。 在此先感谢。

//this is the first function that is called when upload is requested.
void Upload()
{
//check if handle is already open or not
    if(!m_hNetOpen)
    {
    //open interconnect: Initializes an application's use of the WinINet functions.
        m_hNetOpen = InternetOpen("XYZ", 
            INTERNET_OPEN_TYPE_DIRECT,
            NULL,
            NULL,
            INTERNET_INVALID_PORT_NUMBER);  

        //return if handle is NULL
        if(m_hNetOpen == NULL)
        {
            return FALSE;
        }   
    }                                                                        

    //we'll get user specified URL, could be some xyz.com too. 
    if(!m_hNetConnect)
    {
    //opens HTTP or FTP connection for a site requested...pchServerName requested
        m_hNetConnect = InternetConnect(m_hNetOpen, 
            strServerName, 
            INTERNET_DEFAULT_HTTP_PORT,
            NULL,
            NULL,
            INTERNET_SERVICE_HTTP,
            INTERNET_FLAG_PASSIVE,
            dwContext);  
        //return if handle is NULL
        if(m_hNetConnect == NULL)
        {
            return FALSE;
        }
    }    

    dwContext = 0;
    //now, create HTTP request
    m_hHttpConnect = HttpOpenRequest(m_hNetConnect,
        "PUT",
        strObjectName,
        NULL,
        NULL,
        NULL,
        INTERNET_FLAG_CACHE_IF_NET_FAIL,
        dwContext);  
    //return if handle is NULL
    if(m_hHttpConnect == NULL)
    {
        return FALSE;
    }    

    //call UseHttpSendReqEx
    BOOL bRet = UseHttpSendReqEx(m_hHttpConnect, strUploadFileName);  

//if not suuceeded log the message
    if(!bRet)
    {
        //Logmessage
    }  
    if(m_hHttpConnect)
    {
        //close the handle
        InternetCloseHandle(m_hHttpConnect);
    }    

    return bRet;
}

//this function is will send HTTP request and writes data to internetfile
BOOL UseHttpSendReqEx(HINTERNET hConnect, char *upFile)
{
    INTERNET_BUFFERS BufferIn = {0};
    DWORD dwBytesRead = 0;
    DWORD dwBytesWritten = 0;
  //buffer
    BYTE strBuffer[20480] = {0};
    BOOL bRead;
    BOOL bRet = TRUE;  

    //get the size of structure
    BufferIn.dwStructSize = sizeof(INTERNET_BUFFERS);  

    //create file
    m_hFile = CreateFile(upFile, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_DELETE,
        NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);

    //check for invalid handle
    if (m_hFile == INVALID_HANDLE_VALUE)  
    {
        return FALSE;
    }  

    //get the file size
    BufferIn.dwBufferTotal = GetFileSize(m_hFile, NULL);  

    //send request to HTTP server
    if(!HttpSendRequestEx(hConnect, &BufferIn, NULL, HSR_INITIATE, 0))
    {
        //close the file handle
        CloseHandle(m_hFile);
        m_hFile = NULL;
        return FALSE;
    }  

    DWORD sum = 0;
    do
    {
        //read the file that is to be uploaded
        if (!(bRead = ReadFile(m_hFile, strBuffer, sizeof(strBuffer),
            &dwBytesRead, NULL)))
        {
            bRet = FALSE;
            break;
        }  

        //write the internet file
        bRet=InternetWriteFile(hConnect, strBuffer, dwBytesRead,
            &dwBytesWritten);  

        if(!bRet)
        {
            DWORD d = GetLastError();
            bRet = FALSE;
            break;
        }
        memset(strBuffer, '\0', sizeof(strBuffer));
        sum += dwBytesWritten;
    }
    while(dwBytesRead == sizeof(strBuffer)) ;

    //This sleep was introduced as if we immediately after the above loop
    //if we try to close the handle then file does not get created on the   server  
    Sleep(100);
    BOOL b = CloseHandle(m_hFile);
    m_hFile = NULL;  

    return bRet;
}