Wireshark · Wireshark-dev: Re: [Wireshark-dev] Accessing prior packets in Lua

[Beth <beth.tridium@xxxxxxxxx>]

OK, it's all finally beginning to make some sense now.  Thank you very much!

b.

On Wed, Sep 16, 2009 at 1:35 PM, Jeff Morriss <jeff.morriss.ws@gmail.com> wrote:

philippe alarcon wrote:
> Hello,
>
> I suggest you to keep your listener.
>
> As far as I know, the listener is called when the file is loaded.
> And the dissector is called for each selected packet.
>
> Then I think you need both functionalities :
> - a listener in order to analyse and memorise all the informations about
> the different packets,
> - a dissector in order to analyse the current packet,
> and verify if the packet has been acknowledged or not,
> or any related information.

Actually a dissector is called once for each packet when the file is
loaded and then again when each packet is selected.

Guy's suggestion is that when all the packets are dissected, the
dissector stores the information which should be placed on an earlier
packet (e.g., the "time to ack of this frame").  Then, when the
dissector is called again because a packet (e.g., the one that was later
ack'd) was selected, the dissector uses this information to add
(new/generated) information to the now-selected packet's frame.

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