/// <inheritdoc />
protected override async Task <CallResult <UpdateSubscription> > DoStart()
{
CallResult <UpdateSubscription> subResult;
if (limit == null)
{
subResult = await socketClient.SubscribeToOrderBookUpdatesAsync(Symbol, updateInterval, HandleUpdate).ConfigureAwait(false);
}
else
{
subResult = await socketClient.SubscribeToPartialOrderBookUpdatesAsync(Symbol, limit.Value, updateInterval, HandleUpdate).ConfigureAwait(false);
}
if (!subResult)
{
return(new CallResult <UpdateSubscription>(null, subResult.Error));
}
Status = OrderBookStatus.Syncing;
if (limit == null)
{
var bookResult = await restClient.GetOrderBookAsync(Symbol, limit ?? 5000).ConfigureAwait(false);
if (!bookResult)
{
await socketClient.UnsubscribeAll().ConfigureAwait(false);
return(new CallResult <UpdateSubscription>(null, bookResult.Error));
}
SetInitialOrderBook(bookResult.Data.LastUpdateId, bookResult.Data.Bids, bookResult.Data.Asks);
}
else
{
var setResult = await WaitForSetOrderBook(10000).ConfigureAwait(false);
return(setResult ? subResult : new CallResult <UpdateSubscription>(null, setResult.Error));
}
return(new CallResult <UpdateSubscription>(subResult.Data, null));
}
