Re: eroor 322 errorMsg "Error processing request.-'bW' : cause - Duplicate ticker id"
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Hi Liu,
The "counter" variable is initialized at a higher scope (not within the for-each loop). This means that multiple parallel for-each executions are working against the same instance of that variable. Depending on race conditions, this might lead to incorrect functioning of your logic.
Cheers, Dmitry
Hello I am getting an duplicate ticker id error, however I already have a unique id for each request, I have uploaded a screenshot of my snippet of code when I comment out this code it works fine, I have tried commenting out contract.conid and using contract.tradingclass instead of contract.symbol but these did not solve the problem, the full message in debug shows?
? ? ? ? ? ? ? foreach (var strike in strikes)
? ? ? ? ? ? ? ?{
? ? ? ? ? ? ? ? ? ?foreach (var expire in expirations)
? ? ? ? ? ? ? ? ? ?{
? ? ? ? ? ? ? ? ? ? ? ?Contract contract = new Contract();
? ? ? ? ? ? ? ? ? ?contract.ConId = underlyingConId;
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
? ? ? ? ? ? ? ? ? ? contract.TradingClass = tradingClass;
? ? ? ? ? ? ? ? ? ? contract.Exchange = "SMART";
? ? ? ? ? ? ? ? ? ?contract.Currency = "USD";
? ? ? ? ? ? ? ? ? ?contract.SecType = "OPT";
? ? ? ? ? ? ? ? ? ?contract.Right = "CALL";
? ? ? ? ? ? ? ? ? ?contract.Multiplier = "100";
? ? ? ? ? ? ? ? ? ? contract.Strike = strike;
??
? ? ? ? ? ? ? ? ? ? ? ?contract.LastTradeDateOrContractMonth = expire;
? ? ? ? ? ? ? ? ? ? ? ?// Create a new TagValue List object (for API version 9.71)
? ? ? ? ? ? ? ? ? ? ? ?List<TagValue> mktDataOptions = new List<TagValue>();
? ? ? ? ? ? ? ? ? ?clientSocket.reqMarketDataType(3);
? ? ? ? ? ? ? ?clientSocket.reqMktData(reqId + counter, contract, "", false, false, mktDataOptions);?
? ? ? ? ? ? ? ? ? ? ? ?counter = counter + 1;
? ? ? ? ? ? ? ? ? ?}
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Dmitry Shevkoplyas