Thanks for the response. FYI, with Elrang 23.0.2 and the latest Elixir/Phoenix packages on Debian Stretch I am getting:
Failed to start Ranch listener PrjWeb.Endpoint.HTTPS in :ranch_ssl:listen([cacerts: :…, key: :…, cert: :…, alpn_preferred_protocols: [“h2”, “http/1.1”], next_protocols_advertised: [“h2”, “http/1.1”], dhfile: ‘/home/[…]’, cacertfile: ‘/etc/[…]’, certfile: ‘/etc/[…]’, keyfile: ‘/etc/[…]’, port: 8443, ciphers: […], eccs: [:x25519, :secp256r1, :secp384r1], honor_cipher_order: true, reuse_sessions: true, secure_renegotiate: true, versions: [:“tlsv1.3”, :“tlsv1.2”]]) for reason {:options, {:insufficient_crypto_support, {:“tlsv1.3”, {:versions, [:“tlsv1.3”, :“tlsv1.2”]}}}}
Oh well, I suppose TLS 1.3 can wait a bit longer.
