Re: Best way to give configuration information to a protocol

[Juan Jose Martin Carrascosa <juanjo () rti com>]

Hi Pascal,

Thanks for your suggestion. I will definitely look into the UAT dialog.

The GUID / plugin mapping changes every time the system recorded is
rebooted so I can't hardcode the relationship in the Wireshark code. It has
to be dynamically configured. But it is OK to assume that in one pcap file
the relationship GUID / plugin is static.

Regards,
Juanjo Martin

On Mon, Sep 18, 2017 at 9:03 PM, Pascal Quantin <pascal.quantin () gmail com>
wrote:

> Hi Juan Jose,
>
> 2017-09-18 17:12 GMT+02:00 Juan Jose Martin Carrascosa <juanjo () rti com>:
>
> > Hi all,
> >
> > Which is the best way to pass configuration to a protocol? Do we have any
> > builtin mechanisms? I tried to upload a patch using CSV at some point but
> > it didn't succeed. So I wonder if there is any recommended way I can
> > implement: table or list in the Preferences, XML file, CSV file...
> >
> > My goal is to pass ("*GUID*", "*plugin_name*") pairs to the RTPS
> > protocol so Wireshark knows dynamically what plugin it should call to
> > deserialize data that is written by the DataWriter with id = "GUID". The
> > GUID is part of the DATA packet and it is already dissected and known at
> > that point.
>
> A UAT dialog could be appropriate for your needs. Several dissectors are
> already using it and can be taken as an example (packet-ipsec.c,
> packet-http.c, ...).
> Or if the GUID / plugin mapping never changes, you could create a
> dissector table and have your plugin register to this table (see
> register_dissector_table() / register_custom_dissector_table() and the
> corresponding dissector_add_XXX() functions).
>
> Best regards,
> Pascal.
>
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-- 

Juanjo Martin
Senior Application Engineer
Professional Services Group
Office: +34 958 27 88 62
Mobile: +34 656 30 20 56
juanjo () rti com
www.rti.com

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