gem install em-msn

gem 'em-msn'

require 'rubygems'
require 'em-msn'

EM.run do
  EM.schedule do
    msn = Msn::Messenger.new 'johndoe@hotmail.com', 'password'

    msn.on_login_failed do |reason|
      puts "Oops... #{reason}"
    end

    msn.on_ready do
      msn.set_online_status :online
    end

    msn.on_message do |message|
      puts "Got message from #{message.email}: #{message.text}"

      msn.send_message message.email, "Hi #{message.display_name}!"
    end

    msn.on_contact_request do |email, display_name|
      puts "Contact request from #{display_name} <#{email}>"

      msn.add_to_friends_list email
      msn.add_to_allowed_list email
    end

    msn.connect
  end
end