Riverbed Cascade Pilot Personal Edition: Take Wireshark to the Next Level - Advanced Triggers and Alerts; Web and VoIP Analytics; Long-Term Trending and Forensics; Deep Packet Analysis with Wireshark

Wireshark-dev: Re: [Wireshark-dev] Re-use of header fields

Date Index Thread Index Other Months All Mailing Lists

Date Prev Date Next Thread Prev Thread Next

From: Benjamin M Stocks <BMStocks@xxxxxxxxxxxxxxx>
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?

Thanks,

Ben

--
Benjamin M. Stocks
Senior Embedded Software Engineer
Rockwell Automation Kinetix Motion
voice: (262)512-7157
email: bmstocks@xxxxxxxxxxxxxxx

Follow-Ups:
- Re: [Wireshark-dev] Re-use of header fields
  - From: Guy Harris

Prev by Date: [Wireshark-dev] ANSI MAP / TCAP dissector hooks
Next by Date: Re: [Wireshark-dev] Re-use of header fields
Previous by thread: Re: [Wireshark-dev] Re-use of header fields
Next by thread: Re: [Wireshark-dev] Re-use of header fields
Index(es):
- Date
- Thread