Here is my simple zeroconf (aka bonjour dnssd) browser. If I have other services running when I start the browser I can see it (the 'resolved to' line prints to the screen).

However, if I start up another service while this browser is running it will not appear. It just waits at the top of the block so I would expect it to enter the block once a new service is registered.

Any ideas?

require 'rubygems' 
require 'dnssd'

browser = DNSSD::Service.new
browser.browse '_http._tcp.' do |reply|  #<-- code seems to wait here for more services
    DNSSD.resolve reply do |r|
        puts "resolved to: http://#{r.target}:#{r.port}"
    end
end

#example service
register_service = DNSSD::register( "My Service","_http._tcp", nil, my_port) do
    puts "* Registering the service *"
end