[Xcb] WireShark

Peter Harris pharris at opentext.com
Mon Apr 20 09:21:06 PDT 2009

Pat Kane wrote:
> How hard would it be for me to describe my  small  local X extension
> in XCB format and get Wireshark to grok it?

Assuming your local X extension is regular, it should be relatively easy
to describe in XCB's XML format. See the SHAPE extension description for
an example:

Once you've got that, you've got everything that XCB gives you:
automatic libxcb generation, automatic python binding, etc.

In terms of Wireshark, you "just" need to
 - Build unmodified wireshark from svn, to make sure you have that
process working.
 - Apply my patch from
 - Follow these directions:
(except replace the xcb/proto git clone URL with your local git
repository that has your own extension added to it)

> I esp. need to track the  XConvertSelection   process.

Wireshark has excellent filtering capabilities. I'm sure you could
easily construct a filter to show only the packets you are interested in.

Peter Harris
               Open Text Connectivity Solutions Group
Peter Harris                    http://www.opentext.com/connectivity
Research and Development        Phone: +1 905 762 6001
pharris at opentext.com            Toll Free: 1 877 359 4866

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