Re: Registering protocol details

[Pascal Quantin <pascal.quantin () gmail com>]

Hi Paul,

2016-08-07 18:42 GMT+02:00 Paul Offord <Paul.Offord () advance7 com>:

> Hi Anders,
>
>
>
> Ah – I understand.  I had asked Gerald about that at SF16 and he mentioned
> the ability to use other pcap-ng block types.  I’d like to do that in the
> future, but I don’t want to tackle it yet.  This wouldn’t overcome the
> problem I have anyway.
>
>
>
> So going back to the original question, can I call function calls like
> proto_register_add_subtree and proto_register_add_item from with the
> dissect_foo function or do I have to make them from proto_register_foo?

As far as I know you need to register fields before dissection starts. It
can be done dynamically based on some file selected in preferences, but I
don't think it can be done on the fly during dissection.
That said when looking at the proto_register_field_array() code, I do not
see any assertion related to this, but I would not be surprised if things
like filtering do not work as expected if you add new fields as dissection
goes. And as far as I can tell, no dissector is doing something as you
suggest yet.
I will let another developer correct my assumptions if I'm wrong.

Regards,
Pascal.

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