Thanks Pascal,
I think you are right. I’ll rethink my code.
Best regards…Paul
From: wireshark-dev-bounces@xxxxxxxxxxxxx [mailto:wireshark-dev-bounces@xxxxxxxxxxxxx]
On Behalf Of Pascal Quantin
Sent: 07 August 2016 20:52
To: Developer support list for Wireshark <wireshark-dev@xxxxxxxxxxxxx>
Subject: Re: [Wireshark-dev] Registering protocol details
Hi Paul,
2016-08-07 18:42 GMT+02:00 Paul Offord <Paul.Offord@xxxxxxxxxxxx>:
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.
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