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ADODB.Stream Problem between IE browser and IIS6

P: n/a
Hi,

I have an ASP script that initiates a ADODB.Stream like below

first bit gets filename from the database
strAbsFile = getfilefromDB(request.querystring("fileid"))

'-- create FSO object to check if file exists and get properties
Set objFSO = Server.CreateObject("Scripting.FileSystemObject")
'-- check to see if the file exists
If objFSO.FileExists(strAbsFile) Then
Set objFile = objFSO.GetFile(strAbsFile)
Response.Buffer=True
Response.Clear
'-- the filename you give it will be the one that is shown
' to the users by default when they save
Response.AddHeader "Content-Disposition", "attachment; filename=" &
objFile.Name
Response.AddHeader "Content-Length", objFile.Size
Response.ContentType = "application/octet-stream"
Set objStream = Server.CreateObject("ADODB.Stream")
objStream.Open
'-- set as binary
objStream.Type = 1
Response.CharSet = "UTF-8"
'-- load into the stream the file
objStream.LoadFromFile(strAbsFile)
'-- send the stream in the response
Response.BinaryWrite(objStream.Read)
objStream.Close

This works fine when i trigger this script to download the file from a link
in a webpage. However, when i trigger this script from a link in an email or
if i cut and paste the link into the browser and hit enter, the popup file
download is not triggered correctly. It seems filename and content type are
not registered correctly.

I have the same application running on IIS5 and it works fine so i'm
guessing its something between IIS6 and IE6.

I've setup two links so you can try yourself and see if you get the same
result

The first is link from the webpage
http://www.powerfront.net/secure/dow...eferid=1001960

cut and paste the following into your web browser (i've added pass=1 to
bypass the html weblink response)
http://www.powerfront.net/secure/dow...1001960&pass=1

Example:

Correct IE popup would be

Filename : test.pdf
File type : Abobe Acrobat Document
From : www.powerfront.net

Would you like to save the file.....etc
If i cut and paste the link into IE and click enter:

Filename: downloadfile.asp
File type :
From : www.powerfront.net
Message: This type of file could harm your computer if it contains malicious
code.

Would you like to save the file.....etc

For some reason it doesnt get the name of the file and find a content type
although it does allow me to save the file.

For some people using IE they have no problems but others are experiencing
the same problem as me.
I'm using Win XP and have a fully patched system.
Netscape 7 doesnt have the same issue and the correct HTML headers are
downloaded.

Anybody have an Explanation?
Jul 19 '05 #1
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