Re: [work in progress / stuck] improved dissection for VNC (correct hextile encoding, correct desegmentation)

[Anders Broman <a.broman () telia com>]

Kaul skrev 2010-12-15 21:05:
> On Wed, Dec 15, 2010 at 4:29 PM, Jeff Morriss <jeff.morriss.ws 
> <http://jeff.morriss.ws>@gmail.com <http://gmail.com>> wrote:
>
>     Kaul wrote:
>     > 3. Corrected hextile encoding parsing. It's quite wrong the way it's
>     > done today (see 2nd rectangle in packet 23 of the attached sample
>     > capture). It completely ignored the fact that the hextile
>     encoding is
>     > actually encoding a series of 16 by 16 pixel tiles (hence hexTILE, I
>     > reckon). This presents another problem which I don't know how to
>     solve -
>     > I'm getting too many (legitimate!) items in my tree - and wireshark
>     > thinks I'm in an infinite loop. The fact it, each update may have
>     > several rectangles, each may have subrectables, each may have
>     tiles...
>     > it's endless if the screen is big enough.
>
>     Hmmm, are the items really of that much interest to a user?  I mean,
>     would someone really want to look at all 150,000 tiles (or whatever)
>     one-by-one?  I would guess not, in which case it would probably make
>     sense to just have an item that says "150,000 tiles."
>
>
> Well, it is interesting if you have few of them, to see how the 
> protocol really works. I guess I should stop adding them at some 
> point... first 100 or so? if it's smaller than a packet size?
> Nevertheless, one might want to find oddities in the protocol 
> implementation, and then he will need all of the data.
> Y.
As an example, in the sigcomp dissector you can chose the level of detail...
Regards
Anders
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