Ruby String URL checker

string_helper.rb

require "net/https"

def http_response_head(url)
  uri = URI.parse(url)
  http = Net::HTTP.new(uri.host, uri.port)
  if uri.scheme == "https"
    http.use_ssl = true
    http.verify_mode = OpenSSL::SSL::VERIFY_NONE
  end
  request = Net::HTTP::Head.new(uri.request_uri)
  http.request(request)
end

def http_response_code(url)
  head = http_response_head url
  head.code
end

class String
  def to_url
    code = http_response_code self
    raise "No object at #{self} url" if code.to_i != 200
    self
  end
end

# Okay:
# "http://example.com".to_url 
# Not okay
# "http://example.com1".to_url