public static IObservable <long> RandomTimer(
Duration dueTime,
Duration minPeriod,
Duration maxPeriod,
IScheduler scheduler = null)
{
return(Observable.Create <long>(o =>
{
scheduler = scheduler ?? Scheduler.Default;
var rand = new RandomDuration(minPeriod, maxPeriod);
long value = 0;
IObservable <long> initial = Observable.Timer(dueTime, scheduler).Select(_ => value++);
IObservable <long> rest =
Observable.Return(0, scheduler)
.SelectMany(_ => Observable.Timer(TimeSpan.FromMilliseconds(rand.Next()), scheduler))
.Select(_ => value++)
.Repeat();
return initial.Concat(rest).Subscribe(o);
}));
}
