title: How to get total packet length in heuristic registered function?
body: <p>How can i get the total packet length in heuristic register function is_ixia_trailer</p>
  
  <pre><code>ixia_trailer_proto:register_heuristic("eth.trailer", is_ixia_trailer)
  </code></pre>
  
  <p>With buffer:len() i get length of the trailer but not the full message length</p>
  
  <pre><code>local function is_ixia_trailer(buffer,pinfo,tree)
      local length = buffer:len()
  </code></pre>