ByteArray - accept very large data in POST/PUT request, ASP, VBScript

<%
'This sample demonstrates store of large binary data.
'It accepts up to 2GB of a source data a PUT or POST 


SaveLargePostData "C:\temp\uploaddata.dat"

Sub SaveLargePostData(DestFile)
 Const BlockSize = 4096

 Dim TotalBytes, DataReaded, ReadBlockSize, BinaryData

 TotalBytes = Request.TotalBytes
 If TotalBytes > 0 Then
  Dim ByteArray: Set ByteArray = GetByteArray()
 
  For DataReaded = 0 To TotalBytes Step BlockSize
	
	If BlockSize + DataReaded > TotalBytes Then
	'Last block, IIS6 does not accept to read more data
		ReadBlockSize = TotalBytes - DataReaded
	Else
		ReadBlockSize = BlockSize 
	End If
	
	ByteArray.ByteArray = Request.BinaryRead(ReadBlockSize )

	'Save the block of a source data.
	If DataReaded = 0 Then
		'The first block will overwrite existing file (if one)
		ByteArray.SaveAs DestFile
	Else
		'Position of SaveAs (second parameter) is based to 1
		ByteArray.SaveAs DestFile, 1 + DataReaded
	End If
  Next ' DataReaded 
  Response.Write "<br>Source data (" & TotalBytes & _ 
   "B) was saved to '" & DestFile &  "'"
 End If ' TotalBytes>0 then
End Sub





'Returns ByteArray object. Solves problem with registration and installation
Function GetByteArray()
  On Error Resume Next
  Dim Binary
  Set Binary = CreateObject("ScriptUtils.ByteArray") 'Creates ByteArray object
  'response.write hex(Err)
  If Err = &h46 Then
    On Error Goto 0
    Err.Raise 5, "ScriptUtils.ByteArray", "Insufficient permissions to the scptult.ocx file. User: '" & GetUserName & "' must have read permission to the file."
  ElseIf Err = &h1ad Then
    On Error Goto 0
    Err.Raise 6, "ScriptUtils.ByteArray", "Script Utilities is not correctly installed. Please, install Script Utilities on this server or copy and register scptutl.ocx file on this server."
  ElseIf Err = &h8007045A Then
    On Error Goto 0
    Err.Raise 6, "ScriptUtils.ByteArray", "The evaluation version of Script Utilities was expired. Please install full version."
  ElseIf Err = &h8007007E Then
    On Error Goto 0
    Err.Raise 6, "ScriptUtils.ByteArray", "The ScriptUtilities library (scptutl.ocx) is missing. Please copy the library or reinstall the software."
  ElseIf Err <> 0 Then
    Dim E, N
    N = Hex(Err)
    E = Err.Description
    On Error Goto 0
    Err.Raise 6, "ScriptUtils.ByteArray", "Cannot create ScriptUtils.ByteArray object, Error: '" & N & " " & E & "'"
  End If
  Set GetByteArray = Binary
End Function

%>