Use Keep Alive in Selenium Ruby

keep_alive.rb

module Selenium
  module WebDriver
    module Remote
      module Http
        class KeepAlive < Default
          def close
            super
            @http.finish if @http&.started?
          end
          
          private
          
          def http
            super.tap do |http|
              http.start unless http.started?
            end
          end          
        end # KeepAlive
    end # Http
  end # Remote
end # WebDriver

start_driver.rb

require 'keep_alive'

http_client = Selenium::WebDriver::Remote::Http::KeepAlive.new

# Selenium Example
driver = Selenium::Driver.for :chrome, http_client: http_client

# Watir Example
browser = Watir::Browser.new :chrome, http_client: http_client

Seems like a missing end in keep_alive.rb.