[OTR-dev] New OTR Protocol draft: please look over

[Ian Goldberg]

On Thu, Oct 06, 2005 at 08:45:19PM -0400, Greg Troxel wrote:
> I suggest considering adding an id field to fragments.  Right now
> fragments can be misassembled if the transport doesn't actualy do
> in-order delivery.  The reassembly rules protect against this if n is
> different, or k isn't K+1, but don't do so strongly.  Just having a
> fragment id and incrementing it and requiring that it match would
> help.  But, this may not be worthwhile because lack of ordering would
> perhaps cause so many other problems, and it does take up space.

Indeed, if the network reorders messages, all kinds of things go wrong
(not security-wise, of course, but sessions won't get set up properly,
or messages won't be readable).

   - Ian