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Wireshark-dev: Re: [Wireshark-dev] Dissector - How to add a new row to display next message pay

From: Jeff Morriss <jeff.morriss.ws@xxxxxxxxx>
Date: Fri, 03 Aug 2012 10:31:51 -0400
Joe Leong wrote:

      In the Developer�s Guide, 9.4.2 How to reassemble split TCP Packets
      mentions �You also cannot assume that a TCP packet contains only
      one application layer message and that the message header is at
      the start of your TCP payload. More than one messages can be
      transmitted in one TCP packet, so that a message can start at an
      arbitrary position.�.

I have this situation and

Would there be an example that show how to properly display the COL_INFO for the second TCP payload message as a separate (next) row?

No. All the information goes on the one row. The rows are frame-oriented, not PDU-oriented.

e.g. � Currently, my dissector performs the correction dissection on both messages, but I�m having to display the information for both messages on the same row within the �Info� column

So it looks like

No. Time Source Destination Protocol Info 1 232.1 10.1.1.1 10.1.1.2 XXXX DOG CAT

Yep, that looks correct, at least in the current framework. There has been discussion to allow the current frame-oriented framework to somehow allow it to also display per-PDU displays, but nothing has ever been done about it.

Personally I like this idea from many years ago:

http://www.wireshark.org/lists/wireshark-dev/200606/msg00147.html