client tcp_ping.py SERVEIP PORT chunksize

server socat tcp-l:1234,fork exec:'/bin/cat'

serverul socat adds 2ms to the response, when compared with a python server (tfo_server.py)

TFO ** on server sysctl -w net.ipv4.tcp_fastopen=2 ** on client sysctl -w net.ipv4.tcp_fastopen=1 ** tfo_server.py ** tfo_client.py

Results from Precis 203/Ethernet; socat server + old version of tcp_ping, which keeps connection open and measures RTT for write and echo

** ping -i 0.1 -c 300 jepi rtt min/avg/max/mdev = 0.452/0.661/6.125/0.325 ms

** tcp_ping.py jepi.cs.pub.ro 1234 1 min/avg/max/mdev = 0.632/0.90/2.07/0.13 ms

** ping -i 0.1 -s 1450 -c 300 jepi rtt min/avg/max/mdev = 0.571/0.822/1.068/0.082 ms

** tcp_ping.py 141.85.241.249 1234 1420 min/avg/max/mdev = 0.82/1.06/5.58/0.39 ms

results from Precis 203/Eth ** python ./tcp_ping.py -l 2 141.85.241.250 1888 avg = 1.66 ms ** python ./tfo_client.py avg = 1.05 ms

results from Precis 203/WiFi S7, tfo_server ** maintain ping -i 0.01 to AP! ** tcp_ping.py -l 2 141.85.241.250 1888 avg = 8.7ms ** ping avg = 3.1ms ** tfo_client.py avg = 3.74ms