not-working.rb

## Even with sleep 0 the code does not work and no message is ever printed over STDOUT.
## which is weird considering the celluloid-zmq (working.rb) example work with almost same code.
require 'celluloid'

class Server
  include Celluloid
  def run
    loop { [1].each { |i|  async.handle_message 'hello' } ; sleep(0) }
  end

  def handle_message(message)
    puts "got message: #{message}"
  end
end

server = Server.new()
server.async.run
sleep


#### OUTPUT ####

I, [2015-09-19T17:39:08.116435 #17876]  INFO -- : Celluloid 0.17.1.1 is running in BACKPORTED mode. [ http://git.io/vJf3J ]