12031 Error

Hi Guys,


I GET 12031 error at this Function below i have Complete Code please
let me know what could be the reason.I Checked in the Debug Mode Code
Works untill i reach this line.Once debug enters this line the error
is generated...................

    if(!HttpEndRequest(hRequest, NULL, 0, 0))


HINTERNET hINet, hConnection, hData;
CHAR buffer[2048] ;
CString m_strContents ;
DWORD dwRead, dwFlags, dwStatus ;
INTERNET_BUFFERS BufferIn = {0};
DWORD dwBytesRead;
DWORD dwBytesWritten;
BYTE pBuffer[1024]; // Read from file in 1K chunks
BOOL bRead, bRet;

hINet = InternetOpen("InetURL/1.0", INTERNET_OPEN_TYPE_PRECONFIG,
NULL, NULL, 0 );
    if ( !hINet )
    {
        MessageBox("InternetOpen Failed");

    }


hConnection = InternetConnect( hINet, "http://192.168.1.57/
uploadFile.php", 80, " "," ", INTERNET_SERVICE_HTTP, 0, 0 );
    if ( !hConnection )
    {
        InternetCloseHandle(hINet);
        MessageBox("Failed to Connect!");

    }

    BufferIn.dwStructSize=sizeof(INTERNET_BUFFERS);

hRequest = HttpOpenRequest (hConnection, "PUT","/Test/Date.txt", NULL,
NULL, NULL,  INTERNET_FLAG_NO_CACHE_WRITE, 0);

if (!hRequest)
{
       MessageBox("Failed to open request handle!");
}

TCHAR *upFile;
upFile="d:\Date.txt";

HANDLE hFile = CreateFile (upFile, GENERIC_READ, FILE_SHARE_READ,
       NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (hFile == INVALID_HANDLE_VALUE)
  {
       MessageBox("Failed to open local file!");
  }

     BufferIn.dwBufferTotal = GetFileSize (hFile, NULL);

     if(!HttpSendRequestEx( hRequest, &BufferIn, NULL, HSR_INITIATE,
0))
     {
       MessageBox("Error on HttpSendRequestEx!");

     }

     DWORD sum = 0;
     do
     {
       if  (!(bRead = ReadFile (hFile, pBuffer, sizeof(pBuffer),
           &dwBytesRead, NULL)))
       {
         MessageBox("ReadFile failed on buffer!");
         break;
       }
       if (!(bRet=InternetWriteFile( hRequest, pBuffer, dwBytesRead,
           &dwBytesWritten)))
       {
         MessageBox("File Uploading Failed!");
         break;
       }
       sum += dwBytesWritten;
     }
     while (dwBytesRead == sizeof(pBuffer)) ;

     CloseHandle (hFile);

    if(!HttpEndRequest(hRequest, NULL, 0, 0)) ////////////       I GET
HERE 12031 ERROR  /////////////
     {

       int err = GetLastError();

       MessageBox("12030 Server Terminated Connection!");
     }

InternetCloseHandle(hConnection);InternetCloseHandle(hINet);
//InternetCloseHandle(hData);