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The first one sounds like some kind of custom FIX feed. That would be unrelated. The latter is essentially what was released today. The request/response mode is
by apaprocki 15y ago
The first one sounds like some kind of custom FIX feed. That would be unrelated. The latter is essentially what was released today. The request/response mode is used for the indicative/historical retrieval and subscriptions are used for the realtime data.