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I assume StreamState::CLOSED means client is not subscribed to this item any more. The client will not receive any event on this item. Is it correct?
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Yes, this is correct. The StreamState::CLOSED means that the data stream of the item subscription has been closed. The client will no longer receive any events for this item subscription.
What is the rule you create guid for news in MRN in Elektron?
StreamState[Open]; DataState[Suspect]; StatusText[Comms Outage]
How can I know which legs of a strategy are being bought and sold?