RequestRealTimeBars Example about ib HOT 3 OPEN

func doRequestRealTimeBars(mgr *IBManager, symbol string) {
       request := ib.RequestRealTimeBars{
               Contract:   NewContract(symbol),
               BarSize:    5,
               WhatToShow: ib.RealTimeTrades,
               UseRTH:     true,
       }

       id := mgr.NextOrderID()
       request.SetID(id)
       mgr.realtimeMap[id] = symbol

       mgr.engine.Send(&request)

       log.Printf("%s: Sending RealTime Bars For %s", mgr.label, symbol)
}

case (*ib.RealtimeBars):
        r := r.(*ib.RealtimeBars)

        symbol, ok := ibmanager.realtimeMap[r.ID()]
        if !ok {
                symbol = "???"
        }

        log.Printf("%10s: %v - Open: %10.2f Close: %10.2f Low %10.2f High %10.2f Volume %10.2f Count %10v WAP %10.2f\n",
                symbol,
                time.Unix(r.Time, 0).Format("15:04:05"),
                r.Open,
                r.Close,
                r.Low,
                r.High,
                r.Volume,
                r.Count,
                r.WAP)