eta-api elektron-sdk rrt elektron refinitiv-realtime elektron-transport-api java c++ rssl reactor rcc-api source-directory connection trep batch symbology fields c ssl consumer log-in api rics refinitiv-real-time DACS ADS elektron-data-dictionary build market-by-price non-interactive-provider linux rcc rdm Service eikon market-feed callback refinitiv-realtime-sdk token status commodities exchanges fanout contributions stress-test failover service-dictionary monitoring aws data-model unsubscribe constituents api-limits service-id volume pricing dispatch refinitiv-realtime-optimised trade documentation quote search tick-history-rest-api rfa load-balancing refresh-message compile subscription ipa snapshot-pricing sink-driven-source rdf sequence encoding stream-id docker error ADH service-name performance 64-bit multi-threading events mrn time-stamp conflation chain-ric stale enum OMM open-source elektron-direct-feed equities message