Must large files be downloaded in blocks?

[dermie]

Currently, users can download mp3 files from my website PROVIDED the files are relatively small. With large files (4 mega), the files do not download. I understand that large files must be downloaded in blocks. How does one do this??

My current code reads as follows:

<%
Set filesys = CreateObject("Scripting.FileSystemObject")

strWav = "/media/"&Request.Form("code1")&Request.Form("code2")&Request.Form("code3")&".mp3"

strFilename = server.MapPath(strWav)

If filesys.FileExists(strFilename) Then

strFilename = server.MapPath(strWav)

Response.Buffer = True
Response.Clear

Set s = Server.CreateObject("ADODB.Stream")

s.Open
s.Type = 1

Set fso = Server.CreateObject("Scripting.FileSystemObject")
Set f = fso.GetFile(strFilename)

intFilelength = f.size

s.LoadFromFile(strFilename)

Response.AddHeader "Content-Disposition", "attachment; filename=" & f.name
Response.AddHeader "Content-Length", intFilelength
Response.Charset = "UTF-8"
Response.ContentType = "application/octet-stream"
Response.BinaryWrite s.Read
Response.Flush

s.Close
Set s = Nothing

Else

response.write "Sorry, your file is not yet prepared or else you entered the wrong name and number codes.</b></font>"

End If

%>

 

[Kalisto]

This is guesswork (so sorry if I am wrong)

How big is the content length (16 bit or 32 bit ?), and does it represent bytes or Kb? I would guess 32 bit, and you are setting your header to a 4 mb limit.

So, i would guess that you need to create 2 files, a part a, and part b. Then open the fso on the master, and copy the header, then the first X mb of data to file a. Then Output the next block to file B. But, how will your user know to reconstruct them ?

You may be better to zip the files up, unless you are streaming them.