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