isError := s.Code() != codes.Unavailable && s.Code() != codes.Canceled
	return !ok || isError
}

// recordSendError records a metric indicating that a push failed. It returns true if this was an unexpected
// error
func recordSendError(xdsType string, err error) bool {
	if isUnexpectedError(err) {
		// TODO use a single metric with a type tag
		switch xdsType {
		case v3.ListenerType:

	configSizeBytes.With(typeTag.Value(w.TypeUrl)).Record(float64(configSize))

	ptype := "PUSH"
	if logdata.Incremental {
		ptype = "PUSH INC"
	}

	if err := xds.Send(con, resp); err != nil {
		if recordSendError(w.TypeUrl, err) {
			log.Warnf("%s: Send failure for node:%s resources:%d size:%s%s: %v",
				v3.GetShortType(w.TypeUrl), con.proxy.ID, len(res), util.ByteCount(configSize), info, err)
		}
		return err
	}

		info = " " + logdata.AdditionalInfo
	}
	if len(logFiltered) > 0 {
		info += logFiltered
	}

	if err := con.sendDelta(resp, newResourceNames); err != nil {
		logger := deltaLog.Debugf
		if recordSendError(w.TypeUrl, err) {
			logger = deltaLog.Warnf
		}
		if deltaLog.DebugEnabled() {
			logger("%s: Send failure for node:%s resources:%d size:%s%s: %v",