I understand that there is no guaranteed compatibility. It doesn't
really matter now anyway, I tried versions 13 and 14 too and neither
worked, so I'll stick with "it's a dissector for wireshark."
Cheers
-----Original Message-----
From: wireshark-dev-bounces@xxxxxxxxxxxxx
[mailto:wireshark-dev-bounces@xxxxxxxxxxxxx] On Behalf Of Guy Harris
Sent: 10 January 2007 12:10
To: Developer support list for Wireshark
Subject: Re: [Wireshark-dev] Wireshark/Ethereal compatibility
Andrew.Martin@xxxxxxxxxxxxxxxxxxxxxx wrote:
> I've developed a dissector using Wireshark 0.99.4, and it works fine.
> Now during development I'm sure I checked if the dissector worked on
> ethereal, and again, I'm sure it did. However I didn't check the
> version number.
>
> One of the people now testing the dissector has just told me that they
> get an error with ethereal 0.99.0, which I've just replicated. Does
> anyone have any input on version number compatibility?
Currently, there are no guarantees that a dissector for version M of
Wireshark/Ethereal will work on version N, for M != N. There's probably
a pretty good chance that it'll work if M < N, but no guarantees.
At some point, we'll probably stabilize the API and ABI, which means
that, if M is the first version with a stabilized API/ABI, if a
dissector works with version M it'll work for version N if N >= M.
There will probably never be a guarantee that a dissector that works
with version M will work with version N if N < M; the dissector might,
for example, use a feature added after version N. That's less likely to
work than the N > M case - an API might be available in version M but
not version N, if M > N.
Therefore, if you want to make sure a dissector will work with 0.99.0,
you'll have to develop it with 0.99.0.
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