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• 11-18-2008, 10:44 AM

  end.er Joined on 11-18-2008, 3:27 PM Posts 5

  Can the maximum chunk size be configured? Reply Contact   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

  Tags: IIS7configurationIIS 7Chunking

• 11-18-2008, 1:11 PM

  In reply to

  anilr Joined on 05-23-2006, 6:13 PM Redmond, WA Posts 2,210	Re: Can the maximum chunk size be configured? Reply Contact 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. Anil Ruia Senior Software Design Engineer IIS Core Server

• 11-18-2008, 1:41 PM

  In reply to

  end.er Joined on 11-18-2008, 3:27 PM Posts 5

  Re: Can the maximum chunk size be configured? Reply Contact 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.

• 11-18-2008, 6:29 PM

  In reply to

  anilr Joined on 05-23-2006, 6:13 PM Redmond, WA Posts 2,210

  Re: Can the maximum chunk size be configured? Reply Contact 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. Anil Ruia Senior Software Design Engineer IIS Core Server