Wireshark-dev: Re: [Wireshark-dev] Re-use of header fields
From: Benjamin M Stocks <[email protected]>
Date: Wed, 9 Aug 2006 14:17:53 -0500

>> I have a question on the mechanics of the header fields in Wireshark. I
>> am developing a dissector for a protocol where a specific data format
>> may repeat from 1 -> N times within the same payload. Can I reuse the
>> same header field identifier, registered with
>> proto_register_field_array,  for each of the individual data blocks
>> within the same payload?

> Yes.  There is nothing whatsoever that requires that only one instance
> of a particular registered field appear in a given protocol tree, and
> there are plenty of dissectors that put multiple instances of a field in
> a protocol tree if the packet has more than one of them.

Great! Thanks for the answer, as a follow up question: how does it work when I want to filter on a header field? Will it match ANY of the fields?



Benjamin M. Stocks
Senior Embedded Software Engineer
Rockwell Automation Kinetix Motion
voice: (262)512-7157
email: [email protected]