Blocking bidirectional communication in IRuby

ruby-prompter.rb

comm = IRuby::Comm.new("prompter")
comm.open

session = IRuby::Kernel.instance.session

message = session.instance_eval do 
  unserialize(@sockets[:reply].recv_message)
end

comm.close

message[:content]['data']

__DATA__

IPython.notebook.kernel.comm_manager.register_target("prompter", function(prompter){
	prompter.send("foobarcatz");
});