I'll add, too, that anyone who wants to try TLS 1.3 right now can do so with the latest source builds of the Caddy web server. We just merged support for TLS 1.

I'll add, too, that anyone who wants to try TLS 1.3 right now can do so with the latest source builds of the Caddy web server. We just merged support for TLS 1.3 a few minutes after the Go 1.12 release: https://github.com/mholt/caddy/pull/2399 https://github.com/mholt/caddy/pull/2399 If you have a domain name pointed at your machine: $ caddy -host example.com (Roughly equivalent to python -m SimpleHTTPServer but with HTTPS, and production-ready.) Or if you just want to try things out: $ caddy "tls self_signed"