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