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

[Kaul <mykaul () gmail com>]

On Wed, Dec 15, 2010 at 4:29 PM, Jeff Morriss <jeff.morriss.ws () 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.

___________________________________________________________________________
> Sent via:    Wireshark-dev mailing list <wireshark-dev () wireshark org>
> Archives:    http://www.wireshark.org/lists/wireshark-dev
> Unsubscribe: https://wireshark.org/mailman/options/wireshark-dev
>             mailto:wireshark-dev-request () wireshark org?subject=unsubscribe
___________________________________________________________________________
Sent via:    Wireshark-dev mailing list <wireshark-dev () wireshark org>
Archives:    http://www.wireshark.org/lists/wireshark-dev
Unsubscribe: https://wireshark.org/mailman/options/wireshark-dev
             mailto:wireshark-dev-request () wireshark org?subject=unsubscribe