fxn/config.ru

## config.ru
class Img
  def each
    puts "I WAS REQUESTED"
    yield ''
  end
end

map '/img' do
  run lambda { |env| [200, {'Content-Type' => 'image/png', 'Content-Length' => '0'}, Img.new(env)] }
end

## server.rb
require 'socket'

PREAMBLE = <<HTML
<!DOCTYPE html>
<html lang="en">
  <head>
  <title>Testing Parallel Asset Fetching</title>
  </head>
<body>
<img src="http://localhost:9292/img"/>
HTML

REST = []
1000.times do |n|
  REST << "<p>This is paragraph #{n}</p>\n"
end

CONTENT_LENGTH = PREAMBLE.length + REST.inject(0) {|sum, par| sum + par.length}
CRLF = "\015\012"

server = TCPServer.new('localhost', 3000)
loop do
  session = server.accept
  session.write("HTTP/1.1 200 OK#{CRLF}")
  session.write("Server: Assets Fetcher Tester")
  session.write("Content-Type: text/html; charset=utf-8#{CRLF}")
  session.write("Content-Length: #{CONTENT_LENGTH}#{CRLF}")
  session.write(CRLF)

  session.write(PREAMBLE)

  REST.each do |par|
    session.write(par)
    sleep 0.01
  end

  session.close
end
	class Img
	def each
	puts "I WAS REQUESTED"
	yield ''
	end
	end

	map '/img' do
	run lambda { \|env\| [200, {'Content-Type' => 'image/png', 'Content-Length' => '0'}, Img.new(env)] }
	end
	require 'socket'

	PREAMBLE = <<HTML
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<title>Testing Parallel Asset Fetching</title>
	</head>
	<body>
	<img src="http://localhost:9292/img"/>
	HTML

	REST = []
	1000.times do \|n\|
	REST << "<p>This is paragraph #{n}</p>\n"
	end

	CONTENT_LENGTH = PREAMBLE.length + REST.inject(0) {\|sum, par\| sum + par.length}
	CRLF = "\015\012"

	server = TCPServer.new('localhost', 3000)
	loop do
	session = server.accept
	session.write("HTTP/1.1 200 OK#{CRLF}")
	session.write("Server: Assets Fetcher Tester")
	session.write("Content-Type: text/html; charset=utf-8#{CRLF}")
	session.write("Content-Length: #{CONTENT_LENGTH}#{CRLF}")
	session.write(CRLF)

	session.write(PREAMBLE)

	REST.each do \|par\|
	session.write(par)
	sleep 0.01
	end

	session.close
	end