private IObservable <WebsocketMessageWrapper> GetMessageStream() =>
Observable.Using(() => new EventLoopScheduler(), scheduler =>
Observable.Create <WebsocketMessageWrapper>(async observer =>
{
// make sure the websocket is connected
await InitializeWebSocket();
// subscribe observer to message stream
var subscription = new CompositeDisposable(_incomingMessages.ObserveOn(scheduler).Subscribe(observer))
{
// register the observer's OnCompleted method with the cancellation token to complete the sequence on disposal
_internalCancellationTokenSource.Token.Register(observer.OnCompleted)
};
// add some debug output
var hashCode = subscription.GetHashCode();
subscription.Add(Disposable.Create(() => Debug.WriteLine($"incoming message subscription {hashCode} disposed")));
Debug.WriteLine($"new incoming message subscription {hashCode} created");
return(subscription);
}));