Wireshark数据转换成ASCII

根据 MikaS 教程（非常简单易懂），我编写了这个 LUA 解析器：

    yokogawa_protocol = Proto("YokogawaWT3000",  "Yokogawa WT3000 Protocol")

    message_header0 = ProtoField.int32("yokogawa_protocol.message_header0", "messageHeader0", base.DEC)
    message_header1 = ProtoField.int32("yokogawa_protocol.message_header1", "messageHeader1", base.DEC)
    message_header2 = ProtoField.int32("yokogawa_protocol.message_header2", "messageHeader2", base.DEC)
    message_length = ProtoField.int32("yokogawa_protocol.message_length", "messageLength", base.DEC)
    message_ascii  = ProtoField.string("yokogawa_protocol.message_ascii", "messageAscii", base.ASCII)

    yokogawa_protocol.fields = { message_header0, message_header1, message_header2, message_length, message_ascii }

    function yokogawa_protocol.dissector(buffer, pinfo, tree)
      length = buffer:len()
      if length == 0 then return end

      pinfo.cols.protocol = yokogawa_protocol.name

      local subtree = tree:add(yokogawa_protocol, buffer(), "Yokogawa WT3000 Protocol Data")

      subtree:add(message_header0, buffer(0,1)) -- fixed h80
      subtree:add(message_header1, buffer(1,1)) -- fixed h00
      subtree:add(message_header2, buffer(2,1)) -- fixed h00
      subtree:add(message_length, buffer(3,1))  -- ascii length
      subtree:add(message_ascii, buffer(4, length-4)) -- ascii text
    end

    local tcp_port = DissectorTable.get("tcp.port")
    tcp_port:add(10001, yokogawa_protocol)

右键单击 messageAscii，然后选择 "Apply as Column"，让我可以在新列中查看每个消息的解码值。

谢谢大家