Breaks DNSSD

BreakDNSSD.rb

require 'rubygems'
require 'eventmachine'
require 'logger'
require 'dnssd'

# The following gist stops DNSSD from registering a service. On Mac OS X you
# can run: 
#   > dns-sd -B 
# to see services being added and removed. Or altnatively look in Safari's Bonjour
# bookmark. When working you'll see a 'BreakDNSSD' service being added, and only
# removed once the process is stopped. When not working it either never shows up
# or shows up breifly, but is then removed even through the process is still running. 
# 
# Commenting out some lines (see comment 1. below) fixes it, and changing the speed
# at which BreakDNSSD reads from $stdin fixes it (see comment 2,3,4 at bottom).
# Help!!

class BreakDNSSD

  def initialize
    DNSSD.register!("BreakDNSSD", "_http._tcp", nil, 9070)
    @logger = Logger.new("test.log")
  end

  def start
    # 1. Commenting out next line fixes it!??!?!
    @logger.info "Starting"
    EM.run do
      conn = EM.watch($stdin, HandleMessage)
      conn.notify_readable = true
    end
  end
end

module HandleMessage
  def notify_readable
    msg = $stdin.gets
    p msg
  end
end

BreakDNSSD.new.start

# Doesn't register service:
# 2. > while true; do echo "hi there"; done | ruby break_dnssd.rb
# Registers service:
# 3. > while true; do echo "hi there"; sleep 1; done | ruby break_dnssd.rb
# Briefly registers service, then is removed after a few seconds.
# 4. > while true; do echo "hi there"; sleep 0.001; done | ruby break_dnssd.rb