Will HttpResponse.Filter buffer the whole data before start the sending?
- by vtortola
Hi,
An user posts this article about how to use HttpResponse.Filter to compress large amounts of data. But what will happen if I try to transfer a 4G file? will it load the whole file in memory in order to compress it? or otherwise it will compress it chunk by chunk?
I mean, I'm doing this right now:
public void GetFile(HttpResponse response)
{
String fileName = "example.iso";
response.ClearHeaders();
response.ClearContent();
response.ContentType = "application/octet-stream";
response.AppendHeader("Content-Disposition", "attachment; filename=" + fileName);
response.AppendHeader("Content-Length", new FileInfo(fileName).Length.ToString());
using (FileStream fs = new FileStream(Path.Combine(HttpContext.Current.Server.MapPath("~/App_Data"), fileName), FileMode.Open))
using (DeflateStream ds = new DeflateStream(fs,CompressionMode.Compress))
{
Byte[] buffer = new Byte[4096];
Int32 readed = 0;
while ((readed = ds.Read(buffer, 0, buffer.Length)) > 0)
{
response.OutputStream.Write(buffer, 0, readed);
response.Flush();
}
}
}
So at the same time I'm reading, I'm compressing and sending it. Then I wanna know if HttpResponse do the same thing, or otherwise it will load the whole file in memory in order to compress it.
Cheers.
