Rackup script for streaming image

config.ru

require 'rack/stream'

use Rack::Stream

run lambda {|env|
  stream = env['rack.stream']

  stream.after_open do
    times = 0
    open("./moi_munnar_up.jpg", "rb") {|f|

      while (line = f.gets)
        stream.chunk line
        sleep 0.01
        times += 1
      end
    }
    puts "Times is #{times}"
    stream.close  # <-- It's your responsibility to close the connection

  end
  [200, {'Content-Type' => 'image/jpeg'}, []]  # <-- downstream response bodies are also streamed
}