Wireshark · Wireshark-dev: Re: [Wireshark-dev] Question for LUA dissection

[Roland Knall <rknall@xxxxxxxxx>]

Yeah, the issue is, that the result of dissect_tcp_pdus is segmented, and I need to desegment on top of that. In C I would face the same issue, and there I would move to taps, as I do not need the info live

I'll take a look at the threads though, thanks

cheers

On Wed, Feb 7, 2018 at 3:57 PM, Jeff Morriss <jeff.morriss.ws@xxxxxxxxx> wrote:

On Wed, Feb 7, 2018 at 9:38 AM, Roland Knall <rknall@xxxxxxxxx> wrote:

Hi

Just a short question.

I have a protocol, which transports information via TCP. Now we have a segmented download via this protocol, which in turn is a TCP segmented transfer.

I can desegment_tcp_pdus, and end up with a couple of messages with the bigger blocks, which I now need to desegment further.

I am at a loss on how to do that, does anyone have an idea? In C I would use taps and display the final files somewhere else (not in the packet stream), but not really have an idea on how to do this in LUA.

In C you could also use dissect_tcp_pdus() and get the (reassembled) packet in your dissector and dissect that.

 

Anyone got an Idea?

There's an old thread about that; here are a couple useful looking answers:

https://www.wireshark.org/lists/wireshark-dev/201610/msg00057.html
https://www.wireshark.org/lists/wireshark-dev/201610/msg00067.html

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