IIS7 - Configuration & Scripting

Re: Can the maximum chunk size be configured?

anilr — Tue, 18 Nov 2008 23:29:50 GMT

Sending the file in chunks (I assume you mean Transfer-Encoding:chunked) will not help with clients only being able to handle certain size at a time as the client side read can coalasce chunks - so, if the client really does not want more than certain amount of the file, Range request would be the way to go.

Re: Can the maximum chunk size be configured?

end.er — Tue, 18 Nov 2008 18:41:33 GMT

As you can probably appreciate, in a corporate environment everything is not under my control. Although it is a closed system, the team doing the client has decided that they cannot accept more than about 8k worth of data at a time, so I need to chunk files that are larger. This is not something I can change. Other things, performance for example, are secondary.

I would rather not have to do a sequence of writes and flushes. Since I know the maximum chunk size that is acceptable, I'm hoping that I could just configure IIS to use that as a default value. But I don't know how to tell IIS what the chunk size is that it should use. I deally it would be configurable on a per site basis. But that is not important at this time.

I suppose an alternative is for the client to send partial GETs, specifying the byte range it wants.

Re: Can the maximum chunk size be configured?

anilr — Tue, 18 Nov 2008 18:11:50 GMT

If you do a sequence of Response.Write(); followed by Response.Flush(); - the output of the Ewsponse.Write() will be chunked. But, really, if you have the whole file, why do you want to use chunking - just use Response.TransmitFile() to send the file.

Can the maximum chunk size be configured?

end.er — Tue, 18 Nov 2008 15:44:15 GMT

Hi all,

I need to chunk responses to clients in a closed system. I know chunking can be done through c# in aspx pages. But what I would prefer is to tell IIS to send all responses as chunked with a maximum size of 16k bytes as the chunk size.

Is this possible to do?

What I need to do is send binary files to clients on request. The clients (custom apps, not web browsers) have limited ram available. A proposed solution is that the clients get the files (less than 10MB being about average size) in chunks. I would prefer to not have to write code to read the file and send it in chunks, I would prefer that IIS handle it for me if possible.

Thanks in advance

Steve