I'm able to get the IV of every option by requesting market data and looking at the "Option Implied Volatility" tick from tickGeneric. The issue is that I can't request market data for the entire option chain (or can I?). So, how do I get the IV of the entire chain? This the value the I'm trying to get (the one on the right) Thank you!

I have been running TWS in paper mode, and I am getting encountered with "Re-login is required" dialogue daily (Screenshot attached below). I am guessing this happens around IB daily reset time as I saw a few people mentioning this in other topics in this same group. Anyway, once I click on "Re-login" on this dialogue, it throws me a "Login Failed" dialogue, mentioning passwords are case sensitive and some other details. I am attaching screenshot of that dialogue below too. Can someone please explain me these things that: Why in the first place is that re-login is required dialogue thrown? What's the point of enabling auto-restart functionality then when everyday at IB server reset time relogin is required due to connection losses. Why login is failing on clicking re-login? What password is it talking about as I am just clicking re-login, not providing any password at all as it isn't asking for. How does authentication work during re-login? Does it read a token or something from some file etc? Any help would be great. Thanks!

Hey, I'm new to TWS API, but I'm losing my mind, so need some help regarding how to handle, if IB Gateway is closed/restarted while connected to it. I'm using 10.19 TWS API and IB Gateway - but also tried with 10.30 So far I managed to connect successfully: - connect to IB Gateway - get Historical Bars from any ticker from US and using historicalDataEnd I know when its finished(have subscription for it) - scan the market and get data about the contracts - get real time 5 sec bars and build it into any interval bar I want with an aggregator So I think I got the basics down with these, and I get the responses I'd expect. And the errors are coming through as well, like (-1 2104 Market data farm connection is OK:eufarm) for now just writing it out to console. But here starts the confusion of mine about connection lost (I test with manually closing IBGateway or by setting the auto restart), and my application gets no notification about this event at all. I checked the documentation on Old Docs and New Docs both write the same thing: In C# it is caught and sent to IBApi::EWrapper::error with errorCode -1. The client application needs to handle this error message and use it to indicate that an exception has been thrown in the socket connection. Associated functions such as IBApi::EWrapper::connectionClosed and IBApi::EClient::IsConnected functions are not called automatically by the API code but need to be handled at the API client-level According to this, an error should arrive telling me the connection did indeed close, but I do not. And I'm lost. I have an IBClient class that implements EWrapper. And I know its setup correctly since all reqHistoricalData, reqContractDetails, reqScannerSubscription, reqRealTimeBars are working nicely, and other errors are arriving. This is the simple setup for now to start the connection, and how the errors are simply written out to console, I put breakpoints everywhere, and nothing when IBGateway closes. public void error(Exception e) => Console.WriteLine(e); public void error(string str) => Console.WriteLine(str); public void error(int id, int errorCode, string errorMsg, string advancedOrderRejectJson) => Console.WriteLine($"{id} {errorCode} {errorMsg} {advancedOrderRejectJson}"); public IBClient() { ClientSocket = new EClientSocket(this, _signal); ClientSocket.eConnect(host, port, clientId); _reader = new EReader(ClientSocket, _signal); _reader.Start(); new Thread(() => { while (ClientSocket.IsConnected()) { _signal.waitForSignal(); _reader.processMsgs(); } }) { IsBackground = true }.Start(); } Also checked ClientSocket.IsConnected(), and it remains true after closing IBG. And checked connectionClosed it's not called. So my question is, does this error arrive at all? Or there is no real msg to tell me that IBG is closed and therefore the connection is lost. Of so do I need to implement a heartbeat background process to handle this? Thanks, Saph

Dear Community, i have noticed that some historical Data requests seem to go "unanswered" somehow. I compared the tws log and the api log which are set to full detail. In the tws log there are the requested bars that were requested, but in the api logs they are missing. Does someone have any information about this ? regards Simon