C / C++ / MFC

INTERNET_BUFFERS BufferIn = {0};
	DWORD dwBytesRead;
	DWORD dwBytesWritten;
	BYTE pBuffer[1024]; // Read from file in 1K chunks
	BOOL bRead, bRet;
	HANDLE hFile;




	HINTERNET hSession = InternetOpen(NULL,
                                      INTERNET_OPEN_TYPE_PRECONFIG,
                                      NULL,
                                      NULL,
                                      0);
    HINTERNET hConnection = InternetConnect(hSession, 
                                            _T("www.crmpanel.com"),  // Server
                                            INTERNET_DEFAULT_HTTP_PORT,
                                            NULL,     // Username
                                            NULL,     // Password
                                            INTERNET_SERVICE_HTTP,
                                            0,        // Synchronous
                                            NULL);    // No Context


	

     BufferIn.dwStructSize = sizeof( INTERNET_BUFFERS );

     HINTERNET hRequest = HttpOpenRequest(hConnection,
											_T("PUT"),
											_T("cp3/wn_fupload-oo.php"),
											NULL,
											NULL,
											NULL,
											0,
											0);
     if (!hRequest)
     {
       //printf("Failed to open request handle: %lu\n", GetLastError ());
		 MessageBox(_T("Failed to open request handle:"),NULL,MB_OK);
       return ;
     }

	//HttpAddRequestHeaders(hRequest, _T("Content-Type: multipart/form-data;sid=52501;"), -1, HTTP_ADDREQ_FLAG_ADD);




	 hFile = CreateFile (_T("c:\\Image1.gif"),
						GENERIC_READ,
						FILE_SHARE_READ,
						NULL,
						OPEN_EXISTING,
						FILE_ATTRIBUTE_NORMAL,
						NULL);

     if (hFile == INVALID_HANDLE_VALUE)
     {
       //printf("\nFailed to open local file.");
	    MessageBox(_T("Failed to open local file"),NULL,MB_OK);
       return ;
     }



     BufferIn.dwBufferTotal = GetFileSize(hFile, NULL);
	 MessageBox(_T("File size is"),NULL,MB_OK);
     //printf ("File size is %d\n");//, BufferIn.dwBufferTotal );

	// CString h = _T("Content-Type: multipart/form-data");
	
	//CString s = _T("filename=Iamge1.xml&filetype=gif&filesize=70204&sid=52501&csesid=111");

	//BOOL bo = HttpSendRequest(hRequest,(LPCTSTR)&h, h.GetLength(),(LPVOID)&s ,s.GetLength());



	 

     if(!HttpSendRequestEx(hRequest, &BufferIn, NULL, HSR_INITIATE, 0))
     {
		 MessageBox(_T("Error on HttpSendRequestEx"),NULL,MB_OK);
		 DWORD err = GetLastError();
		//printf( "Error on HttpSendRequestEx %lu\n");//,GetLastError() );
       return ;
     }
	 


     DWORD sum = 0;
     do
     {
       if  (!(bRead = ReadFile (hFile, pBuffer, sizeof(pBuffer),
           &dwBytesRead, NULL)))
       {
		 MessageBox(_T("ReadFile failed on buffer"),NULL,MB_OK);
         //printf ("\nReadFile failed on buffer %lu.");//,GetLastError());
         break;
       }
       if (!(bRet=InternetWriteFile( hRequest, pBuffer, dwBytesRead,
           &dwBytesWritten)))
       {
		 MessageBox(_T("InternetWriteFile failed"),NULL,MB_OK);
         //printf ("\nInternetWriteFile failed %lu");//, GetLastError());
         break;
       }
       sum += dwBytesWritten;
     }
     while (dwBytesRead == sizeof(pBuffer)) ;

     CloseHandle (hFile);
	 MessageBox(_T("Actual written bytes:"),NULL,MB_OK);
     //printf ("Actual written bytes: %d\n");//, sum);

     if(!HttpEndRequest(hRequest, NULL, 0, 0))
     {
	   MessageBox(_T("Error on HttpEndRequest"),NULL,MB_OK);
       //printf( "Error on HttpEndRequest %lu \n");//, GetLastError());
       return ;
     }