title: RTT timing for TCP packet using Wireshark
body: <p>I want to calculate the Round Trip timing for the TCP packets.</p>
  
  <p>But in wireshark, I don't see any particular field for the RTT timing for a TCP packet like its there for the RTP packet.</p>
  
  <p>Wireshark do calculates the RTT graph but i am not finding as how it has been calculated.</p>
  
  <p>Can someone help me out in finding the formula used for the same?</p>