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