gistfile1.rb

  require 'net/http'
  require 'net/https'
  require 'net/ping/tcp'


  class Page

    def initialize(address)
      @address = address

      get_status
    end

    def alive?
      @alive
    end

    def status_code
      @code
    end

    def status_string
      @msg
    end

  private

    def get_status
      @uri = URI(@address)

      if @uri
        http = Net::HTTP.new(@uri.host, @uri.port)
        http.use_ssl = true if @uri.scheme == 'https'
        begin
          response = http.get(@uri.path)

          set_answer(response)
        rescue
          ping(@uri.host)
        end
      end
    end

    def ping(address)
      Net::Ping::TCP.service_check = true

      set_answer(Net::Ping::TCP.new(address).ping?)
    end

    def set_answer(response)
      case
      when response.kind_of?(TrueClass)
        @alive = true
        @code = nil
        @msg = nil
      when response.kind_of?(FalseClass)
        @alive = false
        @code = nil
        @msg = nil
      else
        @alive = true
        @code = response.code
        @msg = response.message
      end
    end

  end