Creating an SSL certificate for Sinatra

app.rb

require "webrick"
require "webrick/https"
require "openssl"
require 'sinatra'

configure do
  cn = [[ "CN", WEBrick::Utils::getservername]]
  cert, rsa = WEBrick::Utils::create_self_signed_cert(2048, cn, "Generated by Ruby/OpenSSL")

  set :server_settings, {
    SSLEnable: true,
    SSLVerifyClient: OpenSSL::SSL::VERIFY_NONE,
    SSLCertificate: OpenSSL::X509::Certificate.new(cert.to_s),
    SSLPrivateKey: OpenSSL::PKey::RSA.new(rsa.to_s),
    SSLCertName: cn,
  }
end

get "/" do
  "hello SSL world!"
end

curl -k https://localhost:4567/