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("/temp"),
											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 ;
     }



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

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



     BufferIn.dwBufferTotal = GetFileSize(hFile, NULL);
	 MessageBox(_T("File size is"),NULL,MB_OK);
    
     if(!HttpSendRequestEx(hRequest, &BufferIn, NULL, HSR_INITIATE, 0))
     {
		 MessageBox(_T("Error on HttpSendRequestEx"),NULL,MB_OK);
				       return ;
     }


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

     CloseHandle (hFile);
	 MessageBox(_T("Actual written bytes:"),NULL,MB_OK);
     
     if(!HttpEndRequest(hRequest, NULL, 0, 0))
     {
	   MessageBox(_T("Error on HttpEndRequest"),NULL,MB_OK);
             return ;
     }

	 
	 
	 return ;