Пример #1
0
        private void runSellStrategy(IWebSocketClientConnection webSocketConnection, string symbol)
        {
            OrderBook.IOrder bestBid   = _tradeclient.GetOrderBook(symbol).BestBid;
            OrderBook.IOrder bestOffer = _tradeclient.GetOrderBook(symbol).BestOffer;

            if (_priceType == PriceType.MARKET_AS_MAKER)
            {
                ulong sellPrice = 0;
                if (bestBid != null)
                {
                    sellPrice = bestBid.Price + (ulong)(0.01 * 1e8);
                }
                else if (bestOffer != null)
                {
                    sellPrice = bestOffer.Price;
                }

                if (sellPrice > 0 || _sell_floor_price > 0)
                {
                    if (sellPrice >= _sell_floor_price)
                    {
                        replaceOrder(webSocketConnection, symbol, OrderSide.SELL, sellPrice);
                        return;
                    }

                    _sellTargetPrice = _sell_floor_price; // find the best position as maker for the sell floor price
                }
                else
                {
                    // empty book scenario without a user defined sell floor price
                    _tradeclient.CancelOrderByClOrdID(webSocketConnection, _strategySellOrderClorid);
                    return;
                }
            }

            // available funds with a target price should execute ASAP even as liquidity takers whenever possible
            if (_sellTargetPrice > 0 && bestBid != null && bestBid.Price >= _sellTargetPrice && bestBid.UserId != _tradeclient.UserId)
            {
                ulong availableQty = calculateOrderQty(symbol, OrderSide.SELL, bestBid.Price, ulong.MaxValue);
                if (availableQty > _minOrderSize)
                {
                    ulong sell_qty = Math.Min(availableQty, bestBid.Qty);
                    // execute the order as taker and emulate IOC instruction
                    sendOrder(webSocketConnection, symbol, OrderSide.SELL, sell_qty, bestBid.Price, OrdType.LIMIT, 0, ExecInst.DEFAULT, TimeInForce.IMMEDIATE_OR_CANCEL);
                    return;
                }
                else
                {
                    // cancel current order to free balance to be used as taker
                    MiniOMS.IOrder own_sell_order = _tradeclient.miniOMS.GetOrderByClOrdID(_strategySellOrderClorid);
                    if (own_sell_order != null && (own_sell_order.OrdStatus == OrdStatus.NEW || own_sell_order.OrdStatus == OrdStatus.PARTIALLY_FILLED))
                    {
                        if (own_sell_order.LeavesQty > _minOrderSize)
                        {
                            ulong sell_qty = Math.Min(own_sell_order.LeavesQty, bestBid.Qty);
                            _tradeclient.CancelOrderByClOrdID(webSocketConnection, own_sell_order.ClOrdID);
                            sendOrder(webSocketConnection, symbol, OrderSide.SELL, sell_qty, bestBid.Price, OrdType.LIMIT, 0, ExecInst.DEFAULT, TimeInForce.IMMEDIATE_OR_CANCEL);
                            return;
                        }
                    }
                }
            }

            // post the order in the order book
            if (bestOffer != null)
            {
                if (bestOffer.UserId != _tradeclient.UserId)
                {
                    // sell @ 1 cent bellow the best price (TODO: parameter for price increment)
                    ulong sellPrice = bestOffer.Price - (ulong)(0.01 * 1e8);
                    if (sellPrice >= _sellTargetPrice)
                    {
                        // TODO: Become a Taker when the spread is "small" (i.e for stop trailing converted to pegged or for any pegged)
                        if (sellPrice > bestBid.Price)
                        {
                            replaceOrder(webSocketConnection, symbol, OrderSide.SELL, sellPrice);
                        }
                        else
                        {
                            // avoid being a taker or receiving a reject when using ExecInst=6 but stay in the book with max price
                            ulong max_sell_price = bestBid.Price + (ulong)(0.01 * 1e8);
                            var   own_order      = _tradeclient.miniOMS.GetOrderByClOrdID(_strategySellOrderClorid);
                            ulong availableQty   = calculateOrderQty(symbol, OrderSide.SELL);
                            if (own_order == null || own_order.Price != max_sell_price || availableQty > own_order.OrderQty)
                            {
                                replaceOrder(webSocketConnection, symbol, OrderSide.SELL, max_sell_price);
                            }
                        }
                    }
                    else
                    {
                        // cannot fight for the first position thus try to find a visible position in the book
                        OrderBook orderBook             = _tradeclient.GetOrderBook(symbol);
                        List <OrderBook.Order> sellside = orderBook.GetOfferOrders();
                        int i = sellside.BinarySearch(
                            new OrderBook.Order(OrderBook.OrdSide.SELL, _sellTargetPrice + (ulong)(0.01 * 1e8)),
                            new OrderBook.OrderPriceComparer()
                            );
                        int position = (i < 0 ? ~i : i);
                        Debug.Assert(position > 0);

                        // verificar se a profundidade vale a pena: (TODO: parameters for max_pos_depth and max_amount_depth)
                        if (position > 15 + 1 && orderBook.DoesAmountExceedsLimit(
                                OrderBook.OrdSide.SELL,
                                position - 1, (ulong)(20 * 1e8)))
                        {
                            _tradeclient.CancelOrderByClOrdID(webSocketConnection, _strategySellOrderClorid);
                            return;
                        }

                        var pivotOrder = sellside[position];
                        if (pivotOrder.UserId == _tradeclient.UserId)
                        {
                            // make sure the order is the same or from another client instance
                            MiniOMS.IOrder own_sell_order = _tradeclient.miniOMS.GetOrderByClOrdID(_strategySellOrderClorid);
                            if (sellside[position].OrderId == own_sell_order.OrderID)
                            {
                                // ordem ja e minha : pega + recursos disponiveis e cola no preco do vizinho se já nao estiver
                                ulong price_delta  = sellside.Count > position + 1 ? sellside[position + 1].Price - pivotOrder.Price : 0;
                                ulong newSellPrice = (price_delta > (ulong)(0.01 * 1e8) ?
                                                      pivotOrder.Price + price_delta - (ulong)(0.01 * 1e8) :
                                                      pivotOrder.Price);
                                ulong availableQty = calculateOrderQty(symbol, OrderSide.SELL);
                                if (newSellPrice > pivotOrder.Price || availableQty > pivotOrder.Qty)
                                {
                                    replaceOrder(webSocketConnection, symbol, OrderSide.SELL, newSellPrice, availableQty);
                                }
                            }
                        }
                        else
                        {
                            // estabelece preco de venda 1 centavo menor do que nesta posicao
                            ulong newSellPrice = pivotOrder.Price - (ulong)(0.01 * 1e8);
                            replaceOrder(webSocketConnection, symbol, OrderSide.SELL, newSellPrice);
                        }
                    }
                }
                else
                {
                    // check and replace the order on the top to get closer to the order in the second position and gather more available funds
                    MiniOMS.IOrder         own_sell_order = _tradeclient.miniOMS.GetOrderByClOrdID(_strategySellOrderClorid);
                    List <OrderBook.Order> sellside       = _tradeclient.GetOrderBook(symbol).GetOfferOrders();
                    if (sellside[0].OrderId == own_sell_order.OrderID)
                    {
                        ulong price_delta  = sellside.Count > 1 ? sellside[1].Price - sellside[0].Price : 0;
                        ulong newSellPrice = (price_delta > (ulong)(0.01 * 1e8) ?
                                              bestOffer.Price + price_delta - (ulong)(0.01 * 1e8) :
                                              bestOffer.Price);
                        ulong availableQty = calculateOrderQty(symbol, OrderSide.SELL);
                        if (newSellPrice > bestOffer.Price || availableQty > bestOffer.Qty)
                        {
                            replaceOrder(webSocketConnection, symbol, OrderSide.SELL, newSellPrice, availableQty);
                        }
                    }
                }
            }
            else
            {
                // empty book scenario
                ulong availableQty = calculateOrderQty(symbol, OrderSide.SELL);
                Debug.Assert(_sellTargetPrice > 0);
                ulong sell_price = Math.Max(_sellTargetPrice, bestBid != null ? bestBid.Price + (ulong)(0.01 * 1e8) : 0);
                sendOrder(webSocketConnection, symbol, OrderSide.SELL, availableQty, sell_price);
            }
        }
Пример #2
0
 public void OnExecutionReport(IWebSocketClientConnection webSocketConnection, MiniOMS.IOrder order)
 {
     if (_priceType == PriceType.PEGGED && _strategySide == OrderSide.SELL)
     {
         if (order.OrdStatus == OrdStatus.FILLED || order.OrdStatus == OrdStatus.PARTIALLY_FILLED)
         {
             ulong theSoldAmount = _tradeclient.GetSoldAmount();
             if (theSoldAmount >= _maxAmountToSell)
             {
                 LogStatus(LogStatusType.WARN, String.Format("[OnExecutionReport] Cannot exceed the allowed max amount to sell : {0} {1}", theSoldAmount, _maxAmountToSell));
                 _tradeclient.CancelOrderByClOrdID(webSocketConnection, _strategySellOrderClorid);
             }
         }
     }
 }
Пример #3
0
        private void runBuyStrategy(IWebSocketClientConnection webSocketConnection, string symbol)
        {
            OrderBook.IOrder bestBid   = _tradeclient.GetOrderBook(symbol).BestBid;
            OrderBook.IOrder bestOffer = _tradeclient.GetOrderBook(symbol).BestOffer;

            if (_priceType == PriceType.MARKET_AS_MAKER)
            {
                ulong buyPrice = 0;
                if (bestOffer != null)
                {
                    buyPrice = bestOffer.Price - (ulong)(0.01 * 1e8);
                }
                else if (bestBid != null)
                {
                    buyPrice = bestBid.Price;
                }

                Debug.Assert(_buy_cap_price > 0);
                if (_buy_cap_price == 0)
                {
                    _buy_cap_price = ulong.MaxValue;
                }

                if (buyPrice > 0 && buyPrice <= _buy_cap_price)
                {
                    replaceOrder(webSocketConnection, symbol, OrderSide.BUY, buyPrice);
                    return;
                }

                if (_buy_cap_price == ulong.MaxValue)
                {
                    _tradeclient.CancelOrderByClOrdID(webSocketConnection, _strategyBuyOrderClorid);
                    return;
                }

                _buyTargetPrice = _buy_cap_price; // find the best position as maker at the buy cap price
            }

            if (_priceType == PriceType.EXPLORE_BOOK_DEPTH)
            {
                // set the price based on the depth (this is a lot inefficent but I don't care)
                OrderBook orderBook = _tradeclient.GetOrderBook(symbol);
                ulong     max_price = orderBook.MaxPriceForAmountWithoutSelfOrders(OrderBook.OrdSide.BUY, _minBookDepth, _tradeclient.UserId);
                ulong     min_price = orderBook.MaxPriceForAmountWithoutSelfOrders(OrderBook.OrdSide.BUY, _maxBookDepth, _tradeclient.UserId);
                max_price = max_price < ulong.MaxValue ? max_price : min_price;
                var myOrder = _tradeclient.miniOMS.GetOrderByClOrdID(this._strategyBuyOrderClorid);

                if (max_price < ulong.MaxValue)
                {
                    min_price = min_price < ulong.MaxValue ? min_price : max_price;
                    if (myOrder == null || myOrder.Price > max_price || myOrder.Price < min_price)
                    {
                        //LogStatus (LogStatusType.WARN, String.Format ("[DT] must change order price not in expected position {0} {1} {2}", myOrder != null ? myOrder.Price : 0, max_price, min_price));
                        if (min_price < max_price)
                        {
                            _buyTargetPrice = min_price + (ulong)(0.01 * 1e8); // 1 pip better than min_price
                        }
                        else
                        {
                            _buyTargetPrice = min_price - (ulong)(0.01 * 1e8); // 1 pip worse than min_price
                        }
                    }
                    else
                    {
                        return;                         // don't change the order because it is still in an acceptable position
                    }
                }
                else
                {
                    // no reference found in the book
                    SecurityStatus usd_official_quote = _tradeclient.GetSecurityStatus("UOL", "USDBRL");                      // use USDBRT for the turism quote
                    SecurityStatus btcusd_quote       = _tradeclient.GetSecurityStatus("BITSTAMP", "BTCUSD");
                    if (usd_official_quote != null && usd_official_quote.BestBid > 0 && btcusd_quote != null && btcusd_quote.BestBid > 0)
                    {
                        ulong market_price   = _tradeclient.CalculateVWAP();
                        ulong lastPrice      = _tradeclient.GetLastPrice();
                        ulong off_sale_price = (ulong)(usd_official_quote.BestBid / 1e8 * btcusd_quote.BestBid / 1e8 * 0.5 * 1e8);
                        _buyTargetPrice = Math.Min(Math.Min(market_price, lastPrice), off_sale_price);
                    }
                    else
                    {
                        return;
                    }
                }
            }

            if (bestBid != null)
            {
                if (bestBid.UserId != _tradeclient.UserId)
                {
                    // buy @ 1 cent above the best price (TODO: parameter for price increment)
                    ulong buyPrice = bestBid.Price + (ulong)(0.01 * 1e8);
                    if (buyPrice <= this._buyTargetPrice)
                    {
                        if (buyPrice < bestOffer.Price)
                        {
                            replaceOrder(webSocketConnection, symbol, OrderSide.BUY, buyPrice);
                        }
                        else
                        {
                            // avoid being a taker or receiving a reject when using ExecInst=6 but stay in the book with max price
                            ulong max_buy_price = bestOffer.Price - (ulong)(0.01 * 1e8);
                            var   own_order     = _tradeclient.miniOMS.GetOrderByClOrdID(_strategyBuyOrderClorid);
                            ulong availableQty  = calculateOrderQty(symbol, OrderSide.BUY, max_buy_price);
                            if (own_order == null || own_order.Price != max_buy_price || availableQty > own_order.OrderQty)
                            {
                                replaceOrder(webSocketConnection, symbol, OrderSide.BUY, max_buy_price);
                            }
                        }
                    }
                    else
                    {
                        // cannot fight for the first position thus try to find a visible position in the book
                        OrderBook orderBook            = _tradeclient.GetOrderBook(symbol);
                        List <OrderBook.Order> buyside = orderBook.GetBidOrders();
                        int i = buyside.BinarySearch(
                            new OrderBook.Order(OrderBook.OrdSide.BUY, _buyTargetPrice - (ulong)(0.01 * 1e8)),
                            new OrderBook.ReverseOrderPriceComparer()
                            );
                        int position = (i < 0 ? ~i : i);
                        Debug.Assert(position > 0);

                        if (this._priceType != PriceType.EXPLORE_BOOK_DEPTH)
                        {
                            // verificar se a profundidade vale a pena: (TODO: parameters for max_pos_depth and max_amount_depth)
                            if (position > 15 + 1 && orderBook.DoesAmountExceedsLimit(
                                    OrderBook.OrdSide.BUY,
                                    position - 1, (ulong)(20 * 1e8)))
                            {
                                _tradeclient.CancelOrderByClOrdID(webSocketConnection, _strategyBuyOrderClorid);
                                return;
                            }
                        }

                        var pivotOrder = buyside[position];
                        if (pivotOrder.UserId == _tradeclient.UserId)
                        {
                            // make sure the order is the same or from another client instance
                            MiniOMS.IOrder own_buy_order = _tradeclient.miniOMS.GetOrderByClOrdID(_strategyBuyOrderClorid);
                            if (buyside[position].OrderId == own_buy_order.OrderID)
                            {
                                // ordem ja e minha : pega + recursos disponiveis e cola no preco no vizinho se já nao estiver
                                ulong price_delta = buyside.Count > position + 1 ? pivotOrder.Price - buyside[position + 1].Price : 0;
                                ulong newBuyPrice = (price_delta > (ulong)(0.01 * 1e8) ?
                                                     pivotOrder.Price - price_delta + (ulong)(0.01 * 1e8) :
                                                     pivotOrder.Price);
                                ulong availableQty = calculateOrderQty(symbol, OrderSide.BUY, newBuyPrice);
                                if (newBuyPrice < pivotOrder.Price || availableQty > pivotOrder.Qty)
                                {
                                    replaceOrder(webSocketConnection, symbol, OrderSide.BUY, newBuyPrice, availableQty);
                                }
                            }
                        }
                        else
                        {
                            // estabelece preco de venda 1 centavo maior do que nesta posicao
                            ulong newbuyPrice = pivotOrder.Price + (ulong)(0.01 * 1e8);
                            replaceOrder(webSocketConnection, symbol, OrderSide.BUY, newbuyPrice);
                        }
                    }
                }
                else
                {
                    // make sure the order is the same or from another client instance
                    // check and replace order to get closer to the order in the second position and gather more avaible funds
                    List <OrderBook.Order> buyside       = _tradeclient.GetOrderBook(symbol).GetBidOrders();
                    MiniOMS.IOrder         own_buy_order = _tradeclient.miniOMS.GetOrderByClOrdID(_strategyBuyOrderClorid);
                    if (buyside[0].OrderId == own_buy_order.OrderID)
                    {
                        ulong price_delta = buyside.Count > 1 ? buyside[0].Price - buyside[1].Price : 0;
                        ulong newBuyPrice = (price_delta > (ulong)(0.01 * 1e8) ?
                                             bestBid.Price - price_delta + (ulong)(0.01 * 1e8) :
                                             bestBid.Price);
                        ulong availableQty = calculateOrderQty(symbol, OrderSide.BUY, newBuyPrice);
                        if (newBuyPrice < bestBid.Price || availableQty > bestBid.Qty)
                        {
                            replaceOrder(webSocketConnection, symbol, OrderSide.BUY, newBuyPrice, availableQty);
                        }
                    }
                }
            }
            else
            {
                // empty book scenario
                ulong availableQty = calculateOrderQty(symbol, OrderSide.BUY, _buyTargetPrice);
                Debug.Assert(_buyTargetPrice > 0);
                ulong buy_price = Math.Min(_buyTargetPrice, bestOffer != null ? bestOffer.Price - (ulong)(0.01 * 1e8) : ulong.MaxValue);
                sendOrder(webSocketConnection, symbol, OrderSide.BUY, availableQty, buy_price);
            }
        }
        private void OnBrokerNotification(object sender, SystemEventArgs evt)
        {
            IWebSocketClientConnection webSocketConnection = (IWebSocketClientConnection)sender;

            try
            {
                switch (evt.evtType)
                {
                case SystemEventType.LOGIN_OK:
                    LogStatus(LogStatusType.INFO, "Processing after succesful LOGON");
                    this._myUserID = evt.json["UserID"].Value <ulong>();
                    // disable test request to avoid disconnection during the "slow" market data processing
                    webSocketConnection.EnableTestRequest = false;
                    StartInitialRequestsAfterLogon(webSocketConnection);
                    break;

                case SystemEventType.MARKET_DATA_REQUEST_REJECT:
                    LogStatus(LogStatusType.ERROR, "Unexpected Marketdata Request Reject");
                    webSocketConnection.Shutdown();
                    break;

                case SystemEventType.MARKET_DATA_FULL_REFRESH:
                {
                    string symbol = evt.json["Symbol"].Value <string>();
                    // dump the order book
                    LogStatus(LogStatusType.WARN, _allOrderBooks[symbol].ToString());
                    // bring back the testrequest keep-alive mechanism after processing the book
                    webSocketConnection.EnableTestRequest = true;
                    // run the trading strategy to buy and sell orders based on the top of the book
                    _tradingStrategy.runStrategy(webSocketConnection, symbol);
                    // TODO: remove the temp dump bellow
                    this._vwapForTradingSym.PrintTradesAndTheVWAP();
                    // example how to notify the application to start
                    //this._tradingStrategy.OnStart(webSocketConnection);
                }
                break;

                // --- Order Book Management Events ---
                case SystemEventType.ORDER_BOOK_CLEAR:
                {
                    string    symbol    = evt.json["Symbol"].Value <string>();
                    OrderBook orderBook = null;
                    if (_allOrderBooks.TryGetValue(symbol, out orderBook))
                    {
                        orderBook.Clear();
                    }
                    else
                    {
                        orderBook = new OrderBook(symbol);
                        _allOrderBooks.Add(symbol, orderBook);
                    }
                }
                break;

                case SystemEventType.ORDER_BOOK_NEW_ORDER:
                {
                    string    symbol    = evt.json["Symbol"].Value <string>();
                    OrderBook orderBook = null;
                    if (_allOrderBooks.TryGetValue(symbol, out orderBook))
                    {
                        orderBook.AddOrder(evt.json);
                    }
                    else
                    {
                        LogStatus(LogStatusType.ERROR,
                                  "Order Book not found for Symbol " + symbol + " @ " + evt.evtType.ToString());
                    }
                }
                break;

                case SystemEventType.ORDER_BOOK_DELETE_ORDERS_THRU:
                {
                    string    symbol    = evt.json["Symbol"].Value <string>();
                    OrderBook orderBook = null;
                    if (_allOrderBooks.TryGetValue(symbol, out orderBook))
                    {
                        orderBook.DeleteOrdersThru(evt.json);
                    }
                    else
                    {
                        LogStatus(LogStatusType.ERROR,
                                  "Order Book not found for Symbol " + symbol + " @ " + evt.evtType.ToString()
                                  );
                    }
                }
                break;

                case SystemEventType.ORDER_BOOK_DELETE_ORDER:
                {
                    string    symbol    = evt.json["Symbol"].Value <string>();
                    OrderBook orderBook = null;
                    if (_allOrderBooks.TryGetValue(symbol, out orderBook))
                    {
                        orderBook.DeleteOrder(evt.json);
                    }
                    else
                    {
                        LogStatus(LogStatusType.ERROR,
                                  "Order Book not found for Symbol " + symbol + " @ " + evt.evtType.ToString()
                                  );
                    }
                }
                break;

                case SystemEventType.ORDER_BOOK_UPDATE_ORDER:
                {
                    string    symbol    = evt.json["Symbol"].Value <string>();
                    OrderBook orderBook = null;
                    if (_allOrderBooks.TryGetValue(symbol, out orderBook))
                    {
                        orderBook.UpdateOrder(evt.json);
                    }
                    else
                    {
                        LogStatus(LogStatusType.ERROR,
                                  "Order Book not found for Symbol " + symbol + " @ " + evt.evtType.ToString()
                                  );
                    }
                }
                break;
                // ------------------------------------

                case SystemEventType.TRADE_CLEAR:
                    LogStatus(LogStatusType.WARN, "Receieved Market Data Event " + evt.evtType.ToString());
                    break;

                case SystemEventType.SECURITY_STATUS:
                {
                    LogStatus(LogStatusType.WARN,
                              "Receieved Market Data Event " +
                              evt.evtType.ToString() + " " +
                              (evt.json != null ? evt.json.ToString() : ".")
                              );

                    SecurityStatus securityStatus = new SecurityStatus();
                    securityStatus.Market = evt.json["Market"].Value <string>();
                    securityStatus.Symbol = evt.json["Symbol"].Value <string>();
                    securityStatus.LastPx = evt.json["LastPx"].Value <ulong>();
                    securityStatus.HighPx = evt.json["HighPx"].Value <ulong>();

                    if (evt.json["BestBid"].Type != JTokenType.Null)
                    {
                        securityStatus.BestBid = evt.json["BestBid"].Value <ulong>();
                    }
                    else
                    {
                        securityStatus.BestBid = 0;
                    }

                    if (evt.json["BestAsk"].Type != JTokenType.Null)
                    {
                        securityStatus.BestAsk = evt.json["BestAsk"].Value <ulong>();
                    }
                    else
                    {
                        securityStatus.BestAsk = 0;
                    }

                    if (evt.json["LowPx"].Type != JTokenType.Null)
                    {
                        securityStatus.LowPx = evt.json["LowPx"].Value <ulong>();
                    }
                    else
                    {
                        securityStatus.LowPx = 0;
                    }

                    securityStatus.SellVolume = evt.json["SellVolume"].Value <ulong>();
                    securityStatus.BuyVolume  = evt.json["BuyVolume"].Value <ulong>();

                    // update the security status information
                    string securityKey = securityStatus.Market + ":" + securityStatus.Symbol;
                    _securityStatusEntries[securityKey] = securityStatus;

                    // update the strategy when a new market information arrives
                    _tradingStrategy.runStrategy(webSocketConnection, _tradingSymbol);
                }
                break;

                case SystemEventType.TRADE:
                {
                    JObject msg = evt.json;
                    LogStatus(LogStatusType.WARN, "Receieved Market Data Event " + evt.evtType.ToString() + msg);

                    _vwapForTradingSym.pushTrade(
                        new ShortPeriodTickBasedVWAP.Trade(
                            msg["TradeID"].Value <ulong>(),
                            msg["Symbol"].Value <string>(),
                            msg["MDEntryPx"].Value <ulong>(),
                            msg["MDEntrySize"].Value <ulong>(),
                            String.Format("{0} {1}", msg["MDEntryDate"].Value <string>(), msg["MDEntryTime"].Value <string>())
                            )
                        );

                    /*
                     * LogStatus(
                     *      LogStatusType.INFO,
                     *      String.Format(
                     *              "New Trade : VWAP = {0} | LastPx = {1} - {2} | Size = {3}",
                     *              _vwapForTradingSym.calculateVWAP(),
                     *              _vwapForTradingSym.getLastPx(),
                     *              msg["MDEntryPx"].Value<ulong>(),
                     *              msg["MDEntrySize"].Value<ulong>()
                     *      )
                     * );
                     */
                }
                break;

                case SystemEventType.TRADING_SESSION_STATUS:
                    break;

                case SystemEventType.MARKET_DATA_INCREMENTAL_REFRESH:
                    LogStatus(LogStatusType.WARN, "Receieved Market Data Incremental Refresh : " + evt.evtType.ToString());
                    // update the strategy when an incremental message is processed
                    _tradingStrategy.runStrategy(webSocketConnection, _tradingSymbol);
                    break;

                // --- Order Entry Replies ---
                case SystemEventType.EXECUTION_REPORT:
                {
                    LogStatus(LogStatusType.WARN, "Receieved " + evt.evtType.ToString() + "\n" + evt.json.ToString());
                    MiniOMS.IOrder order = ProcessExecutionReport(evt.json);
                    _tradingStrategy.OnExecutionReport(webSocketConnection, order);
                }
                break;

                case SystemEventType.ORDER_LIST_RESPONSE:
                {
                    // process the requested list of orders
                    JObject msg = evt.json;
                    LogStatus(LogStatusType.WARN,
                              "Received " + evt.evtType.ToString() + " : " + "Page=" + msg["Page"].Value <string>()
                              );
                    JArray ordersLst = msg["OrdListGrp"].Value <JArray>();

                    if (ordersLst != null && ordersLst.Count > 0)
                    {
                        var columns = msg["Columns"].Value <JArray>();
                        Dictionary <string, int> indexOf = new Dictionary <string, int>();
                        int index = 0;
                        foreach (JToken col in columns)
                        {
                            indexOf.Add(col.Value <string>(), index++);
                        }

                        foreach (JArray data in ordersLst)
                        {
                            MiniOMS.Order order = new MiniOMS.Order();
                            order.ClOrdID     = data[indexOf["ClOrdID"]].Value <string>();
                            order.OrderID     = data[indexOf["OrderID"]].Value <ulong>();
                            order.Symbol      = data[indexOf["Symbol"]].Value <string>();
                            order.Side        = data[indexOf["Side"]].Value <char>();
                            order.OrdType     = data[indexOf["OrdType"]].Value <char>();
                            order.OrdStatus   = data[indexOf["OrdStatus"]].Value <char>();
                            order.AvgPx       = data[indexOf["AvgPx"]].Value <ulong>();
                            order.Price       = data[indexOf["Price"]].Value <ulong>();
                            order.OrderQty    = data[indexOf["OrderQty"]].Value <ulong>();
                            order.OrderQty    = data[indexOf["LeavesQty"]].Value <ulong>();
                            order.CumQty      = data[indexOf["CumQty"]].Value <ulong>();
                            order.CxlQty      = data[indexOf["CxlQty"]].Value <ulong>();
                            order.Volume      = data[indexOf["Volume"]].Value <ulong>();
                            order.OrderDate   = data[indexOf["OrderDate"]].Value <string>();
                            order.TimeInForce = data[indexOf["TimeInForce"]].Value <char>();
                            LogStatus(LogStatusType.WARN,
                                      "Adding Order to MiniOMS -> ClOrdID = " + order.ClOrdID.ToString() +
                                      " OrdStatus = " + order.OrdStatus
                                      );
                            try
                            {
                                _miniOMS.AddOrder(order);
                            }
                            catch (System.ArgumentException)
                            {
                            }
                        }

                        // check and request the next page
                        if (ordersLst.Count >= msg["PageSize"].Value <int>())
                        {
                            LogStatus(LogStatusType.INFO, "Requesting Page " + msg["Page"].Value <int>() + 1);
                            SendRequestForOpenOrders(webSocketConnection, msg["Page"].Value <int>() + 1);
                        }
                        else
                        {
                            LogStatus(LogStatusType.INFO, "EOT - no more Order List pages to process.");
                            // notify application that all requestes where replied,
                            // assuming the ORDER_LIST_REQUEST was the last in the StartInitialRequestsAfterLogon
                            //_tradingStrategy.OnStart(webSocketConnection);
                        }
                    }
                }
                break;

                case SystemEventType.BALANCE_RESPONSE:
                    if (evt.json != null)
                    {
                        //JObject receivedBalances = evt.json[_brokerId.ToString()].Value<JObject>();
                        foreach (var rb in evt.json[_brokerId.ToString()].Value <JObject>())
                        {
                            try
                            {
                                this._balances[rb.Key] = rb.Value.Value <ulong>();
                            }
                            catch (System.OverflowException)
                            {
                                // TODO: find a better solution for this kind of conversion problem
                                // {"4": {"BRL_locked": -1, "BTC_locked": 0, "BRL": 48460657965, "BTC": 50544897}, "MsgType": "U3", "ClientID": 90826379, "BalanceReqID": 3}
                                this._balances[rb.Key] = 0;
                            }
                        }
                        // update the strategy when the balance is updated
                        _tradingStrategy.runStrategy(webSocketConnection, _tradingSymbol);
                    }
                    break;

                case SystemEventType.TRADE_HISTORY_RESPONSE:
                {
                    JObject msg = evt.json;
                    LogStatus(LogStatusType.WARN,
                              "Received " + evt.evtType.ToString() + " : " + "Page=" + msg["Page"].Value <string>()
                              );

                    /*
                     * JArray all_trades = msg["TradeHistoryGrp"].Value<JArray>();
                     *
                     * if (all_trades != null && all_trades.Count > 0)
                     * {
                     *      var columns = msg["Columns"].Value<JArray>();
                     *      Dictionary<string, int> indexOf = new Dictionary<string, int>();
                     *      int index = 0;
                     *      foreach (JToken col in columns)
                     *      {
                     *              indexOf.Add(col.Value<string>(), index++);
                     *      }
                     *
                     *      foreach (JArray trade in all_trades)
                     *      {
                     *              _vwapForTradingSym.pushTrade(
                     *                      new ShortPeriodTickBasedVWAP.Trade(
                     *                              trade[indexOf["TradeID"]].Value<ulong>(),
                     *                              trade[indexOf["Market"]].Value<string>(),
                     *                              trade[indexOf["Price"]].Value<ulong>(),
                     *                              trade[indexOf["Size"]].Value<ulong>(),
                     *                              trade[indexOf["Created"]].Value<string>()
                     *                      )
                     *              );
                     *      }
                     *
                     *      // check and request the next page
                     *      if (all_trades.Count >= msg["PageSize"].Value<int>())
                     *      {
                     *              LogStatus(LogStatusType.INFO, "TODO: Requesting Page " + msg["Page"].Value<int>() + 1);
                     *              //TODO: create a function to call here and request a new page if requested period in minutes is not satified
                     *      }
                     *      else
                     *      {
                     *              LogStatus(LogStatusType.INFO, "EOT - no more Trade History pages to process.");
                     *      }
                     *
                     *      LogStatus(LogStatusType.INFO, String.Format("VWAP = {0}", _vwapForTradingSym.calculateVWAP()));
                     * }
                     */
                }
                    //
                    break;

                case SystemEventType.CLOSED:
                    // notify the application the connection was broken
                    //_tradingStrategy.OnClose(webSocketConnection);
                    break;

                // Following events are ignored because inheritted behaviour is sufficient for this prototype
                case SystemEventType.OPENED:

                case SystemEventType.ERROR:
                case SystemEventType.LOGIN_ERROR:
                case SystemEventType.HEARTBEAT:
                    break;

                default:
                    LogStatus(LogStatusType.WARN, "Unhandled Broker Notification Event : " + evt.evtType.ToString());
                    break;
                }
            }
            catch (Exception ex)
            {
                LogStatus(LogStatusType.ERROR,
                          " OnBrokerNotification Event Handler Error : " + ex.Message.ToString() + "\n" + ex.StackTrace
                          );
            }
        }