DouKaku?

#!/usr/local/bin/ruby
require 'rubygems'
require 'mechanize'

class Crawler < WWW::Mechanize
  attr_accessor :agent

  PROXY_HOST = 'localhost'
  PROXY_PORT = '8080'
  URI = 'http://ja.doukaku.org/feeds/comments/'

  def initialize(conf = {})
    super()
    self.max_history = 1  # 幸せになるおまじない
    self.set_proxy(PROXY_HOST, PROXY_PORT)
    conf.each {|method, value| self.send(method, value) }
  end

  def fetch
    get(URI)
  end
end

# puts Crawler.new.fetch.body  # => succeed
puts Crawler.new({:open_timeout= => 0.1, :read_timeout= => 0.1}).fetch.body