Ping example using js-libp2p
Based on https://docs.libp2p.io/tutorials/getting-started/javascript/ with some improvements. ;)
npm install
node main.js
Copy the address from the output.
In a separate console
node main.js <address>
The second node will ping the first one and print the latency.
Hint: you can run it also against go-libp2p-ping