h2o.conf

num-threads: 1
listen:
  port: 8080
hosts:
  default:
    listen:
      port: 8443
      ssl:
        certificate-file: examples/h2o/server.crt
        key-file: examples/h2o/server.key
    paths:
      "/":
        mruby.handler: |
          Proc.new do |env|
            [200, [], ["hello world"]]
          end
        file.dir: examples/h2o/doc_root