title: How can I measure the performance and TCP RTT of my server code?
body: <p>I created a basic TCP server that reads incoming binary data in protocol buffer format, and writes a binary msg as response. I would like to benchmark the the roundtrip time.</p>
  
  <p>I tried iperf, but could not make it send the same input file multiple times. Is there another benchmark tool than can send a binary input file repeatedly? </p>