em_keyboard_from_instance.rb

gistfile1.rb

#!/usr/bin/env ruby
# encoding: utf-8

# The purpose of this is:
# connection = AMQP.connect
# handler = MyKbdHandlerClass.new(connection) # SO I CAN ACCESS connection from within the handler class.
# EM.open_keyboard(handler)

require "eventmachine"

class MyKbd
  include EM::Protocols::LineText2

  def receive_line(data)
    p [:received, data]
  end
end

def EM.open_keyboard_form_instance(instance)
  input = read_keyboard
  @conns[input] = instance
  block_given? and yield instance
  instance
end

EM.run do
  kbd = MyKbd.new
  EM.open_keyboard_form_instance(kbd)
end

Reply from Aman: EM.open_keyboard Module, connection should work, it will pass connection to the initializer.