return buildRedirectRequest(userResponse, method, chain)
      }

      HTTP_CLIENT_TIMEOUT -> {
        // 408's are rare in practice, but some servers like HAProxy use this response code. The
        // spec says that we may repeat the request without modifications. Modern browsers also
        // repeat the request (even non-idempotent ones.)

            bb.putShort((short) 3); // rflags
            bb.put("\\srv2\0".getBytes(StandardCharsets.UTF_16LE));

            // Position for third referral
            bb.position(40); // 8 header + 16 + 16

            // Third Referral v1
            bb.putShort((short) 1); // version
            bb.putShort((short) 16); // size
            bb.putShort((short) 2); // serverType