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I've written a dissector in Lua for my custom protocol:

local myproto = Proto("MyProto", "My Custom Protocol")
myproto.fields.msg_counter = ProtoField.uint8("myproto.msg_counter", "Message counter", base.DEC)

function myproto.dissector(tvbuf, pktinfo, root)
  pktinfo.cols.protocol = myproto.name
  if root.visible then
    root:add_le(myproto.fields.msg_counter, tvbuf(10, 1))
  end
end

local udp_port = DissectorTable.get("udp.port")
udp_port:add(5432, myproto)

That works, the "Message counter" field and its value are correctly displayed in the tree area. But when I right click the field and choose "Apply as Column", the column is added but remains empty:

How can I fix this, so that the field values are displayed in the column view? I'm using Wireshark 3.2.3. Thanks in advance!

Thanks, that worked! But now packet parsing is painfully slow, it takes several minutes per 100k captured packets (and m

“Apply as Column” for field in custom protocol in Wireshark I've written a dissector in Lua for my custom protocol: loc

“Apply as Column” for field in custom protocol in Wireshark I've written a dissector in Lua for my custom protocol: loc