This example builds on the libp2p host example example and demonstrates how to use AutoTLS to automatically generate a wildcard Let's Encrypt TLS certificate unique to the libp2p host (*.<PeerID>.libp2p.direct), and use it with libp2p WebSockets transport over TCP enabling browsers to directly connect to the libp2p host.
For this example to work, you need to have a public IP address and be publicly reachable. AutoTLS is guarded by connectivity check, and will not ask for a certificate unless your libp2p node emits event.EvtLocalReachabilityChanged with network.ReachabilityPublic.
From the go-libp2p/examples directory run the following:
cd autotls/
go run .