Wireshark-bugs: [Wireshark-bugs] [Bug 8313] new dissector for SML protocol
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Thu, 14 Feb 2013 13:23:29 +0000

Comment # 6 on bug 8313 from 
(In reply to comment #5)

> After a very brief look a the specification I think extracting the ASN1 code
> from the specification (if a complete asn1 description is missing) and
> making it
> an asn2wrs generated dissector is a better choice. It might require a bit of
> .cnf magic though.
> Regards
> Anders

hi,
The SML specification is written in asn1, but it has some difference.
Each element has a type-length field (TL), likely BER, but it's not the same.
An TL-Field is one octet, the first 4 bits are the type and the last 4 bits are
used for the length. Additional to that, if the MSB is set, the next octet is
used for the length too and so on.  
I'm not an expert in asn1, but i think ans1 has no list type? But SML does
heavily based on lists.

That code works great and has the exact graphical presentation for the analysis
of the data. It's part of an bachelor thesis and i missed the point at the
beginning, that an asn1 convertation is possible. 

So why discard the whole code, to generate a new one, that does the exact same
thing and needed to be customized? 

Regards
Alex

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