ips_from

# File actionpack/lib/action_dispatch/middleware/remote_ip.rb, line 74
      def ips_from(header, allow_proxies = false)
        ips = @env[header] ? @env[header].strip.split(/[,\s]+/) : []
        allow_proxies ? ips : ips.reject{|ip| ip =~ @middleware.proxies }
      end