add mdns for a bit of fun

bin/distributed_demo

@@ -0,0 +1,34 @@
+#!/usr/bin/env ruby
+
+require 'client'
+require 'socket'
+require 'net/dns/mdns-sd'
+
+Thread.abort_on_exception = true
+
+if ARGV[0]
+  Dist::Client.new(ARGV[0])
+else
+  address = nil
+
+  puts "Searching for server..."
+  service = Net::DNS::MDNSSD.browse('_demo_server._tcp') do |r|
+    Net::DNS::MDNSSD.resolve(r.name, r.type, r.domain) do |rr|
+      puts "Found!"
+      service.stop
+      address = "#{rr.target}:#{rr.port}"
+    end
+  end
+  50.times do
+    sleep 0.1
+    break if address
+  end
+
+  if address
+    Dist::Client.new(address)
+  else
+    puts "Couldn't find a demo server."
+  end
+end
+
+

bin/distributed_demo_server

@@ -0,0 +1,18 @@
+#!/usr/bin/env ruby
+
+require 'server'
+
+Thread.abort_on_exception = true
+
+require 'socket'
+require 'net/dns/mdns-sd'
+
+record = { 'description' => 'distributed_demo_server' }
+Net::DNS::MDNSSD.register(Socket.gethostname, '_demo_server._tcp', 'local', ARGV[0].to_i, record) do |reply|
+  p reply
+end
+
+
+server = Dist::Server.new(ARGV[0].to_i)
+Thread.new { server.listen }
+Rack::Handler::Thin.run MasterApp.new(server), :Port => 9505

distributed_dem.gemspec

@@ -0,0 +1,29 @@
+# -*- encoding: utf-8 -*-
+
+Gem::Specification.new do |s|
+  s.name = %q{distributed_demo}
+  s.version = "1.0.3"
+
+  s.required_rubygems_version = Gem::Requirement.new(">= 0") if s.respond_to? :required_rubygems_version=
+  s.authors = [%q{Tyler McMullen}]
+  s.date = %q{2010-03-25}
+  s.description = %q{Demo for my talk at the Scottish Ruby Conference: Distributed Systems with Rack.}
+  s.executables = [%q{distributed_demo}, %q{distributed_demo_server}]
+  s.files = [%q{bin/distributed_demo}, %q{bin/distributed_demo_server}]
+  s.require_paths = [%q{lib}]
+  s.rubygems_version = %q{1.8.6}
+  s.summary = %q{Distributed systems demo}
+
+  s.add_dependency 'mongrel'
+  s.add_dependency 'rack'
+  s.add_dependency 'net-mdns'
+
+  if s.respond_to? :specification_version then
+    s.specification_version = 3
+
+    if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then
+    else
+    end
+  else
+  end
+end