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