func dbTableEntriesNumber(ip, port, networkName, tableName string, doneCh chan resultTuple) {
    body, err := httpGet(ip, port, "/gettable?nid="+networkName+"&tname="+tableName)
    if err != nil {
        log.G(context.TODO()).Errorf("tableEntriesNumber %s there was an error: %s", ip, err)
        doneCh <- resultTuple{id: ip, result: -1}