#!/usr/bin/env ruby

require 'net/http'
require 'uri'

# ensure that we're getting a first argument and that it's a valid URI
abort("You must specify a hostname as the first argument.") if ARGV.first.nil?
abort("Invalid URI") unless uri = URI.parse(ARGV.first)

# create our request object
req = Net::HTTP::Head.new(uri.request_uri)
http = Net::HTTP.new(uri.host, uri.port)
req.add_field("Host", uri.host)

# add the custom range headers to our request object
# we're adding 100 different ranges with offsets between 1 and 100.
1000.times do
    req.add_field("Range", "5-#{Random.rand(0..1300)}")
end

# get the response by making the request
# TODO: make this block easier to understand
res = http.request(req)

# print out our request and response
puts "Request: #{res.inspect}"
req.each do |key,value|
    puts "#{key}: #{value}"
end

puts "\n"

puts "Response: #{res.inspect}"
res.each do |key,value|
    puts "#{key}: #{value}"
end