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