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