Calling chained dissector only once and modifying payload for further processing

[Jeswin Mathai <jeswinrokz () gmail com>]

want to modify payload of a packet before it is processed by its desired
dissector. I've written a chained dissector in lua, which modifies the tvb
and then calls the next dissector with the modified tvb. The plugins is
working correctly. The issue I'm facing is that the dissector is called
every time, upon applying filter or opening the io graph, which makes it
slower. I can call my dissector only once by checking the value of
pinfo.visited. But doing so the payload is not modified and the desired
dissector processes the original payload after the first run. I'm looking
for a solution so that my dissector is called only onces, which will
processes and modifies the payload on the first run. The modified payload
should persist so that whenever the packet is visited again(by applying
filters or IO graph or Endpoints) the desired dissector would process the
modifed payload rather than the original one

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