instance method raise_spoofing_error

# File actionpack/lib/action_dispatch/middleware/remote_ip.rb, line 187
      def raise_spoofing_error
        message = +"IP spoofing attack?! " \
          "HTTP_CLIENT_IP=#{@req.client_ip.inspect} " \
          "HTTP_X_FORWARDED_FOR=#{@req.x_forwarded_for.inspect}"
        if forwarded = @req.get_header("HTTP_FORWARDED")
          message << " HTTP_FORWARDED=#{forwarded.inspect}"
        end
        raise IpSpoofAttackError, message
      end