检查有效的联通缓存服务器ip

check_unicom_cache.rb

require 'uri'
require 'net/http'
require 'timeout'

def check_server(ip)
  uri = URI('http://ip.mangege.com/')

  Timeout::timeout(3) do
    Net::HTTP.start(ip, 80) do |http|
      request = Net::HTTP::Get.new uri

      response = http.request request
      puts ip if response.body.include?(ip)
    end
  end
rescue
end

(1..254).each do |i|
  check_server("120.52.72.#{i}")
end