Re: Wireshark 1.0.13 and Lua (post)dissectors

[Oleg <oleg.khr () gmail com>]

Is anybody using Lua for post dissectors?
Is it the right mailing list to send the question?

Thanks,
Oleg

On Mon, May 17, 2010 at 5:52 PM, Oleg <oleg.khr () gmail com> wrote:

> I am trying to implement postdissectors using Lua and Wireshark 1.0.13.
> And even a basic example doesn't work for me.
>
> Field extractor always returns nil:
>
> udp_len_f = Field.new("udp.length")
> test_proto = Proto ("test", "Test Protocol")
>
> function test_proto.dissector (buffer, pinfo, tree)
>    pinfo.cols.info = "Test"
>
>    local udp_len = udp_len_f()
>    if udp_len then
>      pinfo.cols.info = "UDP length: " .. udp_len.value
> else
>      pinfo.cols.info = "UDP length: nil"
>    end
> end
>
> register_postdissector(test_proto)
>
> Such postdissector always produces "UDP length: nil" for all UDP messages.
>
> It works fine on the newer versions of Wireshark but I have to use 1.0.x
> series for my task.
> Was anyone able to get it working with 1.0.13?
>
> Thanks,
> Oleg
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