# File lib/cool.io/dns_resolver.rb, line 45
    def self.hosts(host, hostfile = HOSTS)
      hosts = {}
      File.open(hostfile) do |f|
        f.each_line do |host_entry|
          entries = host_entry.gsub(/#.*$/, '').gsub(/\s+/, ' ').split(' ')
          addr = entries.shift
          entries.each { |e| hosts[e] ||= addr }
        end
      end

      hosts[host]
    end