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