public async Task SubscribeOnOrderBook(string currencyPairId, Action <IList <OrderBookItem> > callback)
{
Connect();
var innerExistingOrderbook = await _connection.Context.MarketOrderbookAsync(currencyPairId, 30);
var existingOrderBook = innerExistingOrderbook.ToOuterModel();
callback(existingOrderBook);
var subscription = new Subscription
{
SubscribeRequest = StreamingRequest.SubscribeOrderbook(currencyPairId, 30),
UnsubscribeRequest = StreamingRequest.UnsubscribeOrderbook(currencyPairId, 30),
EventHandler = (o, e) =>
{
if (!(e.Response is OrderbookResponse orderbookResponse) ||
orderbookResponse.Payload.Figi != currencyPairId)
{
return;
}
var orderBook = orderbookResponse.Payload.ToOuterModel();
callback(orderBook);
}
};
_connection.StreamingEventReceived += (o, e) => subscription.EventHandler(o, e);
await _connection.Context.SendStreamingRequestAsync(subscription.SubscribeRequest);
}