DNS resolver / speed checker for reg.ru

checker.rb

# Example output:
#
# Resolved IP addresses for www.reg.ru:
#     31.31.204.42
#     31.31.204.21
#     31.31.205.41
# 
# Loading from 31.31.204.42 took 0.370469 seconds
# Loading from 31.31.204.21 took 1.037444 seconds
# Loading from 31.31.205.41 took 1.38692 seconds
# 
# IP address 31.31.204.42 was the fastest (0.370469 secs)

#! /usr/bin/env ruby

require 'resolv'
require 'net/http'
require 'benchmark'

host = 'www.reg.ru'

ipaddrs = Resolv.getaddresses(host)

puts "Resolved IP addresses for #{host}:"
ipaddrs.each do |ip|
  puts "    #{ip}"
end
puts ''

load_times = {}

ipaddrs.each do |ip|
  uri = URI("http://#{ip}")

  req = Net::HTTP::Get.new(uri.request_uri)
  req['Host'] = host

  # proxy_addr = 'localhost'
  # proxy_port = 8888
  # 
  load_times[ip] = Benchmark.realtime do
    # Net::HTTP::Proxy(proxy_addr, proxy_port).start(uri.hostname, uri.port) {|http|
    Net::HTTP.start(uri.hostname, uri.port) {|http|
      http.request(req)
    }
  end
  puts "Loading from #{ip} took #{load_times[ip]} seconds"
end

puts ''
inv = load_times.invert
fastest_time = inv.keys.min
fastest_ip = inv[fastest_time]

puts "IP address #{fastest_ip} was the fastest (#{fastest_time} secs)"