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