Simular que Facebook nos notifica de un cambio

fake_facebook_subscription_notification.rb

#!/usr/bin/env ruby
require 'uri'
require 'json'
require 'net/http'

uri = URI.parse("http://localhost:3000/call_back_url")

post_params = {
  :object => "user", 
  :entry => [
      {:uid => 248656665, :id => 248656665, :time => 1335867574, :changed_fields => ["feed"]},
      {:uid => 248656665, :id => 248656665, :time => 1335867574, :changed_fields => ["feed"]}    
    ]
  }
  
req = Net::HTTP::Post.new(uri.path)
req.body = JSON.generate(post_params)
req["Content-Type"] = "application/json"

http = Net::HTTP.new(uri.host, uri.port)

response = http.start {|htt| htt.request(req)}    

puts response.inspect