server options

server_options.rb

class_option :config, aliases: "-c", type: :string, default: "config.ru",
  desc: "Uses a custom rackup configuration.", banner: :file

# [...]

def server_options
  {
    user_supplied_options: user_supplied_options,
    server:                using,
    log_stdout:            log_to_stdout?,
    Port:                  port,
    Host:                  host,
    DoNotReverseLookup:    true,
    config:                options[:config],
    environment:           environment,
    daemonize:             options[:daemon],
    pid:                   pid,
    caching:               options[:dev_caching],
    restart_cmd:           restart_command,
    early_hints:           early_hints
  }
end