protected override IWebSocket OnGetTickersWebSocket(Action <IReadOnlyCollection <KeyValuePair <string, ExchangeTicker> > > callback)
{
Dictionary <int, string> channelIdToSymbol = new Dictionary <int, string>();
return(ConnectWebSocket(string.Empty, (_socket, msg) =>
{
JToken token = JToken.Parse(msg.ToStringFromUTF8());
if (token is JArray array)
{
if (array.Count > 10)
{
List <KeyValuePair <string, ExchangeTicker> > tickerList = new List <KeyValuePair <string, ExchangeTicker> >();
if (channelIdToSymbol.TryGetValue(array[0].ConvertInvariant <int>(), out string symbol))
{
ExchangeTicker ticker = ParseTickerWebSocket(symbol, array);
if (ticker != null)
{
callback(new KeyValuePair <string, ExchangeTicker>[] { new KeyValuePair <string, ExchangeTicker>(symbol, ticker) });
}
}
}
}
else if (token["event"].ToStringInvariant() == "subscribed" && token["channel"].ToStringInvariant() == "ticker")
{
// {"event":"subscribed","channel":"ticker","chanId":1,"pair":"BTCUSD"}
int channelId = token["chanId"].ConvertInvariant <int>();
channelIdToSymbol[channelId] = token["pair"].ToStringInvariant();
}
return Task.CompletedTask;
}, async(_socket) =>
{
var symbols = await GetSymbolsAsync();
foreach (var symbol in symbols)
{
await _socket.SendMessageAsync("{\"event\":\"subscribe\",\"channel\":\"ticker\",\"pair\":\"" + symbol + "\"}");
}
}));
}
private ExchangeTicker ParseTicker(JToken token)
{
// [{ "TradePairId":100,"Label":"LTC/BTC","AskPrice":0.00006000,"BidPrice":0.02000000,"Low":0.00006000,"High":0.00006000,"Volume":1000.05639978,"LastPrice":0.00006000,"BuyVolume":34455.678,"SellVolume":67003436.37658233,"Change":-400.00000000,"Open": 0.00000500,"Close": 0.00000600, "BaseVolume": 3.58675866,"BaseBuyVolume": 11.25364758, "BaseSellVolume": 3456.06746543 }, ... ]
var symbols = token["Label"].ToStringInvariant().Split('/');
ExchangeTicker ticker = new ExchangeTicker()
{
Id = token["TradePairId"].ToStringInvariant(),
Ask = token["AskPrice"].ConvertInvariant<decimal>(),
Bid = token["BidPrice"].ConvertInvariant<decimal>(),
Last = token["LastPrice"].ConvertInvariant<decimal>(),
// Since we're parsing a ticker for a market, we'll use the volume/baseVolume fields here and ignore the Buy/Sell Volumes
// This is a quess as to ambiguous intent of these fields.
Volume = new ExchangeVolume()
{
PriceSymbol = symbols[0],
QuantitySymbol = symbols[1],
PriceAmount = token["Volume"].ConvertInvariant<decimal>(),
QuantityAmount = token["BaseVolume"].ConvertInvariant<decimal>(),
Timestamp = DateTime.UtcNow // No TimeStamp is returned, but Now seems appropriate
}
};
return ticker;
}
// Bitbank supports endpoint for getting all rates in one request, Using this endpoint is faster then ExchangeAPI's default implementation
// (which interate `OnGetTickerAsync` for each marketSymbols)
// Note: This doesn't give you a volume. if you want it, please specify marketSymbol.
protected override async Task <IEnumerable <KeyValuePair <string, ExchangeTicker> > > OnGetTickersAsync()
{
JToken token = await MakeJsonRequestAsync <JToken>($"/prices");
var symbols = await OnGetMarketSymbolsAsync();
var result = new List <KeyValuePair <string, ExchangeTicker> >();
foreach (var symbol in symbols)
{
var data = token[GlobalMarketSymbolToExchangeMarketSymbolAsync(symbol)];
var ticker = new ExchangeTicker()
{
ApiResponse = token,
Ask = data["sell"].ConvertInvariant <decimal>(),
Bid = data["buy"].ConvertInvariant <decimal>(),
Last = data["last"].ConvertInvariant <decimal>(),
MarketSymbol = symbol
};
result.Add(new KeyValuePair <string, ExchangeTicker>(symbol, ticker));
}
return(result);
}
protected override async Task <IWebSocket> OnGetTickersWebSocketAsync(Action <IReadOnlyCollection <KeyValuePair <string, ExchangeTicker> > > callback, params string[] marketSymbols)
{
Dictionary <int, string> channelIdToSymbol = new Dictionary <int, string>();
return(await ConnectWebSocketAsync(string.Empty, async (_socket, msg) =>
{
JToken token = JToken.Parse(msg.ToStringFromUTF8());
if (token is JArray array)
{
if (array.Count > 10)
{
List <KeyValuePair <string, ExchangeTicker> > tickerList = new List <KeyValuePair <string, ExchangeTicker> >();
if (channelIdToSymbol.TryGetValue(array[0].ConvertInvariant <int>(), out string symbol))
{
ExchangeTicker ticker = await ParseTickerWebSocketAsync(symbol, array);
if (ticker != null)
{
callback(new KeyValuePair <string, ExchangeTicker>[] { new KeyValuePair <string, ExchangeTicker>(symbol, ticker) });
}
}
}
}
else if (token["event"].ToStringInvariant() == "subscribed" && token["channel"].ToStringInvariant() == "ticker")
{
// {"event":"subscribed","channel":"ticker","chanId":1,"pair":"BTCUSD"}
int channelId = token["chanId"].ConvertInvariant <int>();
channelIdToSymbol[channelId] = token["pair"].ToStringInvariant();
}
}, async (_socket) =>
{
marketSymbols = marketSymbols == null || marketSymbols.Length == 0 ? (await GetMarketSymbolsAsync()).ToArray() : marketSymbols;
foreach (var marketSymbol in marketSymbols)
{
await _socket.SendMessageAsync(new { @event = "subscribe", channel = "ticker", pair = marketSymbol });
}
}));
}
protected override IWebSocket OnGetTickersWebSocket(Action <IReadOnlyCollection <KeyValuePair <string, ExchangeTicker> > > callback, params string[] symbols)
{
void innerCallback(string json)
{
#region sample json
/*
* {
* Nonce : int,
* Deltas :
* [
* {
* MarketName : string,
* High : decimal,
* Low : decimal,
* Volume : decimal,
* Last : decimal,
* BaseVolume : decimal,
* TimeStamp : date,
* Bid : decimal,
* Ask : decimal,
* OpenBuyOrders : int,
* OpenSellOrders : int,
* PrevDay : decimal,
* Created : date
* }
* ]
* }
*/
#endregion
var freshTickers = new Dictionary <string, ExchangeTicker>(StringComparer.OrdinalIgnoreCase);
JToken token = JToken.Parse(json);
token = token["D"];
foreach (JToken ticker in token)
{
string marketName = ticker["M"].ToStringInvariant();
var(baseCurrency, quoteCurrency) = ExchangeMarketSymbolToCurrencies(marketName);
decimal last = ticker["l"].ConvertInvariant <decimal>();
decimal ask = ticker["A"].ConvertInvariant <decimal>();
decimal bid = ticker["B"].ConvertInvariant <decimal>();
decimal baseCurrencyVolume = ticker["V"].ConvertInvariant <decimal>();
decimal quoteCurrencyVolume = ticker["m"].ConvertInvariant <decimal>();//NOTE: Bittrex uses the term BaseVolume when referring to QuoteCurrencyVolume
DateTime timestamp = CryptoUtility.UnixTimeStampToDateTimeMilliseconds(ticker["T"].ConvertInvariant <long>());
var t = new ExchangeTicker
{
MarketSymbol = marketName,
Ask = ask,
Bid = bid,
Last = last,
Volume = new ExchangeVolume
{
BaseCurrencyVolume = baseCurrencyVolume,
BaseCurrency = baseCurrency,
QuoteCurrencyVolume = quoteCurrencyVolume,
QuoteCurrency = quoteCurrency,
Timestamp = timestamp
}
};
freshTickers[marketName] = t;
}
callback(freshTickers);
}
return(new BittrexWebSocketManager().SubscribeToSummaryDeltas(innerCallback));
}
/// <summary>
/// Parse a JToken into a ticker
/// </summary>
/// <param name="api">ExchangeAPI</param>
/// <param name="token">Token</param>
/// <param name="marketSymbol">Symbol</param>
/// <param name="askKey">Ask key</param>
/// <param name="bidKey">Bid key</param>
/// <param name="lastKey">Last key</param>
/// <param name="baseVolumeKey">Base currency volume key</param>
/// <param name="quoteVolumeKey">Quote currency volume key</param>
/// <param name="timestampKey">Timestamp key</param>
/// <param name="timestampType">Timestamp type</param>
/// <param name="baseCurrencyKey">Base currency key</param>
/// <param name="quoteCurrencyKey">Quote currency key</param>
/// <param name="idKey">Id key</param>
/// <returns>ExchangeTicker</returns>
internal static ExchangeTicker ParseTicker(this ExchangeAPI api, JToken token, string marketSymbol,
object askKey, object bidKey, object lastKey, object baseVolumeKey,
object quoteVolumeKey = null, object timestampKey = null, TimestampType timestampType = TimestampType.None,
object baseCurrencyKey = null, object quoteCurrencyKey = null, object idKey = null)
{
if (token == null || !token.HasValues)
{
return(null);
}
decimal last = token[lastKey].ConvertInvariant <decimal>();
// parse out volumes, handle cases where one or both do not exist
token.ParseVolumes(baseVolumeKey, quoteVolumeKey, last, out decimal baseCurrencyVolume, out decimal quoteCurrencyVolume);
// pull out timestamp
DateTime timestamp = (timestampKey == null ? CryptoUtility.UtcNow : CryptoUtility.ParseTimestamp(token[timestampKey], timestampType));
// split apart the symbol if we have a separator, otherwise just put the symbol for base and convert symbol
string baseCurrency;
string quoteCurrency;
if (baseCurrencyKey != null && quoteCurrencyKey != null)
{
baseCurrency = token[baseCurrencyKey].ToStringInvariant();
quoteCurrency = token[quoteCurrencyKey].ToStringInvariant();
}
else if (string.IsNullOrWhiteSpace(marketSymbol))
{
throw new ArgumentNullException(nameof(marketSymbol));
}
else
{
(baseCurrency, quoteCurrency) = api.ExchangeMarketSymbolToCurrencies(marketSymbol);
}
// create the ticker and return it
JToken askValue = token[askKey];
JToken bidValue = token[bidKey];
if (askValue is JArray)
{
askValue = askValue[0];
}
if (bidValue is JArray)
{
bidValue = bidValue[0];
}
ExchangeTicker ticker = new ExchangeTicker
{
MarketSymbol = marketSymbol,
Ask = askValue.ConvertInvariant <decimal>(),
Bid = bidValue.ConvertInvariant <decimal>(),
Id = (idKey == null ? null : token[idKey].ToStringInvariant()),
Last = last,
Volume = new ExchangeVolume
{
BaseCurrencyVolume = baseCurrencyVolume,
BaseCurrency = baseCurrency,
QuoteCurrencyVolume = quoteCurrencyVolume,
QuoteCurrency = quoteCurrency,
Timestamp = timestamp
}
};
return(ticker);
}
/// <summary>
/// Parse a JToken into a ticker
/// </summary>
/// <param name="api">ExchangeAPI</param>
/// <param name="token">Token</param>
/// <param name="symbol">Symbol</param>
/// <param name="askKey">Ask key</param>
/// <param name="bidKey">Bid key</param>
/// <param name="lastKey">Last key</param>
/// <param name="baseVolumeKey">Base volume key</param>
/// <param name="convertVolumeKey">Convert volume key</param>
/// <param name="timestampKey">Timestamp key</param>
/// <param name="timestampType">Timestamp type</param>
/// <param name="baseCurrencyKey">Base currency key</param>
/// <param name="convertCurrencyKey">Convert currency key</param>
/// <param name="idKey">Id key</param>
/// <returns>ExchangeTicker</returns>
internal static ExchangeTicker ParseTicker(this ExchangeAPI api, JToken token, string symbol,
object askKey, object bidKey, object lastKey, object baseVolumeKey,
object convertVolumeKey = null, object timestampKey = null, TimestampType timestampType = TimestampType.None,
object baseCurrencyKey = null, object convertCurrencyKey = null, object idKey = null)
{
if (token == null || !token.HasValues)
{
return(null);
}
decimal last = token[lastKey].ConvertInvariant <decimal>();
// parse out volumes, handle cases where one or both do not exist
token.ParseVolumes(baseVolumeKey, convertVolumeKey, last, out decimal baseVolume, out decimal convertVolume);
// pull out timestamp
DateTime timestamp = (timestampKey == null ? DateTime.UtcNow : CryptoUtility.ParseTimestamp(token[timestampKey], timestampType));
// split apart the symbol if we have a separator, otherwise just put the symbol for base and convert symbol
string baseSymbol;
string convertSymbol;
if (baseCurrencyKey != null && convertCurrencyKey != null)
{
baseSymbol = token[baseCurrencyKey].ToStringInvariant();
convertSymbol = token[convertCurrencyKey].ToStringInvariant();
}
else if (string.IsNullOrWhiteSpace(symbol))
{
throw new ArgumentNullException(nameof(symbol));
}
else if (api.SymbolSeparator.Length != 0)
{
string[] pieces = symbol.Split(api.SymbolSeparator[0]);
if (pieces.Length != 2)
{
throw new ArgumentException($"Symbol does not have the correct symbol separator of '{api.SymbolSeparator}'");
}
baseSymbol = pieces[0];
convertSymbol = pieces[1];
}
else
{
baseSymbol = convertSymbol = symbol;
}
// create the ticker and return it
ExchangeTicker ticker = new ExchangeTicker
{
Ask = token[askKey].ConvertInvariant <decimal>(),
Bid = token[bidKey].ConvertInvariant <decimal>(),
Id = (idKey == null ? null : token[idKey].ToStringInvariant()),
Last = last,
Volume = new ExchangeVolume
{
BaseVolume = baseVolume,
BaseSymbol = baseSymbol,
ConvertedVolume = convertVolume,
ConvertedSymbol = convertSymbol,
Timestamp = timestamp
}
};
return(ticker);
}
protected override IDisposable OnGetTickersWebSocket(Action <IReadOnlyCollection <KeyValuePair <string, ExchangeTicker> > > callback)
{
if (callback == null)
{
return(null);
}
void innerCallback(string json)
{
#region sample json
/*
* {
* Nonce : int,
* Deltas :
* [
* {
* MarketName : string,
* High : decimal,
* Low : decimal,
* Volume : decimal,
* Last : decimal,
* BaseVolume : decimal,
* TimeStamp : date,
* Bid : decimal,
* Ask : decimal,
* OpenBuyOrders : int,
* OpenSellOrders : int,
* PrevDay : decimal,
* Created : date
* }
* ]
* }
*/
#endregion
var freshTickers = new Dictionary <string, ExchangeTicker>(StringComparer.OrdinalIgnoreCase);
JToken token = JToken.Parse(json);
token = token["D"];
foreach (JToken ticker in token)
{
string marketName = ticker["M"].ToStringInvariant();
decimal last = ticker["l"].ConvertInvariant <decimal>();
decimal ask = ticker["A"].ConvertInvariant <decimal>();
decimal bid = ticker["B"].ConvertInvariant <decimal>();
decimal volume = ticker["V"].ConvertInvariant <decimal>();
decimal baseVolume = ticker["m"].ConvertInvariant <decimal>();
DateTime timestamp = CryptoUtility.UnixTimeStampToDateTimeMilliseconds(ticker["T"].ConvertInvariant <long>());
var t = new ExchangeTicker
{
Ask = ask,
Bid = bid,
Last = last,
Volume = new ExchangeVolume
{
ConvertedVolume = volume,
ConvertedSymbol = marketName,
BaseVolume = baseVolume,
BaseSymbol = marketName,
Timestamp = timestamp
}
};
freshTickers[marketName] = t;
}
callback(freshTickers);
}
var client = SocketManager;
return(client.SubscribeToSummaryDeltas(innerCallback));
}