Re: [6lowapp] Fwd: New Version Notification for draft-shelby-6lowapp-encoding-00

Richard Kelsey <richard.kelsey@ember.com> Fri, 16 October 2009 15:18 UTC

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Date: Fri, 16 Oct 2009 11:16:38 -0400
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To: Zach Shelby <zach@sensinode.com>
In-reply-to: <FF01D43C-E058-4492-BD01-1DC10A487FD5@sensinode.com> (message from Zach Shelby on Fri, 16 Oct 2009 15:45:41 +0300)
From: Richard Kelsey <richard.kelsey@ember.com>
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Subject: Re: [6lowapp] Fwd: New Version Notification for draft-shelby-6lowapp-encoding-00
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   From: Zach Shelby <zach@sensinode.com>
   Date: Fri, 16 Oct 2009 15:45:41 +0300

   We have submitted a draft looking at efficient XML encodings, their  
   applicability to 6LowApp and what requirements there are for using  
   them over an application protocol.

   http://www.ietf.org/id/draft-shelby-6lowapp-encoding-00.txt

This is great.  It should be a big help.

I do have a question about MIME types.  When using EXI in
schema-informed mode it seems you have two choices:
  - include the schema, either directly or by reference
  - use the application/octet-stream type
Is there much point in indicating that this is an EXI stream
if the schema is not also provided?  For messages as small as
these even sending a reference to the schema will signifcantly
increase the overhead.

The W3C EXI Best Practices document has only placeholders
for the sections on how to deal with schemas and out-of-band
encoding knowledge.
                                -Richard Kelsey