a.rb

require 'socket'

s = TCPSocket.open 'localhost', 3000
s.puts "GET /~backend/build/5972d799c0ff881e4a37.page.js HTTP/1.1\r\n"
s.puts "Host: localhost"
s.puts "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"
s.puts "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7"
s.puts "\r\n"

while line = s.gets
  exit!
  puts line.chop
end