From: brabuhr@...
Date: 2008-01-29T00:45:39+09:00
Subject: Re: XMPP client with Ruby

On Jan 28, 2008 2:04 AM, Zablon Ochomo <ochomoz@gmail.com> wrote:
> The code below is working with the xmpp4r form
> http://home.gna.org/xmpp4r/
> ...
> how do I receive messages, since I can only send?

Try looking at some of the examples.  If you installed the gem, then go to:
    .../gems/xmpp4r-0.3.2/data/doc/xmpp4r/examples/

And, look for add_message_callback in the RDoc:
    http://home.gna.org/xmpp4r/rdoc/
    http://home.gna.org/xmpp4r/rdoc/classes/Jabber/Stream.html#M000487

examples/basic/echo_threaded.rb:
    cl = Client::new(myJID)
    cl.connect
    ...
    cl.add_message_callback do |m|
      if m.type != :error
        puts m.body
      end
    end