havenwood/config.ru

## config.ru
# frozen_string_literal: true

##
# A Rack app that streams a simple HTML page.
module App
  PRETEND_TO_WAIT_FOR_IO = proc do
    sleep 2
    'Lorem ipsum dolor sit amet, consectetuer adipiscing elit.'
  end
  HEADERS = {'content-type' => 'text/html; charset=utf-8'}.freeze
  BODY = proc do |stream|
    stream << "<!DOCTYPE html>\n<html lang=\"en\">\n"
    stream << "<head><meta charset=\"utf-8\"><title>Hello, World!</title></head>\n"
    stream << "<body>\n<h1>Hello, World!</h1>\n"
    stream << "<p>#{PRETEND_TO_WAIT_FOR_IO.call}</p>\n"
    stream << "</body>\n</html>\n"
  ensure
    stream.close
  end

  def self.call(_env) = [200, HEADERS.dup, BODY]
end

##
# Rack middleware that strips headers from the response.
class NoHeaders
  NO_HEADERS = {}.freeze

  def initialize(app) = @app = app

  def call(env)
    status, _headers, body = @app.call(env)
    [status, NO_HEADERS.dup, body]
  end
end

##
# Rack middleware that strips the body from the response.
class NoBody
  NO_BODY = ->(_stream) {}

  def initialize(app) = @app = app

  def call(env)
    status, headers, _body = @app.call(env)
    [status, headers, NO_BODY]
  end
end

##
# A Rack app with optional NoHeaders and NoBody middleware.
app = Rack::Builder.app do
  # use NoHeaders
  # use NoBody

  run App
end

run app
	# frozen_string_literal: true

	##
	# A Rack app that streams a simple HTML page.
	module App
	PRETEND_TO_WAIT_FOR_IO = proc do
	sleep 2
	'Lorem ipsum dolor sit amet, consectetuer adipiscing elit.'
	end
	HEADERS = {'content-type' => 'text/html; charset=utf-8'}.freeze
	BODY = proc do \|stream\|
	stream << "<!DOCTYPE html>\n<html lang=\"en\">\n"
	stream << "<head><meta charset=\"utf-8\"><title>Hello, World!</title></head>\n"
	stream << "<body>\n<h1>Hello, World!</h1>\n"
	stream << "<p>#{PRETEND_TO_WAIT_FOR_IO.call}</p>\n"
	stream << "</body>\n</html>\n"
	ensure
	stream.close
	end

	def self.call(_env) = [200, HEADERS.dup, BODY]
	end

	##
	# Rack middleware that strips headers from the response.
	class NoHeaders
	NO_HEADERS = {}.freeze

	def initialize(app) = @app = app

	def call(env)
	status, _headers, body = @app.call(env)
	[status, NO_HEADERS.dup, body]
	end
	end

	##
	# Rack middleware that strips the body from the response.
	class NoBody
	NO_BODY = ->(_stream) {}

	def initialize(app) = @app = app

	def call(env)
	status, headers, _body = @app.call(env)
	[status, headers, NO_BODY]
	end
	end

	##
	# A Rack app with optional NoHeaders and NoBody middleware.
	app = Rack::Builder.app do
	# use NoHeaders
	# use NoBody

	run App
	end

	run app