websockets rrto rdp-api trep refinitiv-realtime-optimised elektron-sdk refinitiv-realtime #technology python api authentication #product ADS elektron c# rics fields connection streaming-prices posting token #content refresh contributions mrn pricing forex error-login java node-js aws ATS refinitiv-real-time-optimised update-message market-by-order chain-ric r cloud disconnection .net market-price quote rkd-api javascript python api news OMM data delayed-feed batch licensing historical snapshot-pricing testing documentation conflation Service date market-feed error rmds-test-client json trade log-in news-text-analytics post oauth rcc-api streaming-data time-series domain qos stream-id refinitiv-dataplatform-eikon messages container elektron-data-dictionary DACS economic-data credentials warrants tick-data rdp web stream rcc time-stamp eikon key request-token support elektron-direct-feed stream-state marketpsych unix publishing time-out rfa user-interface developer-community ema-api eikon-data-api permissioning isin market-depth synchronous time endpoint eta-api parser refinitiv-realtime-sdk app-key sso perl refinitiv-real-time api-token ts1 closure sequence error-500 encryption exception error-502 eap symbol-list response request api-limits refinitiv-data-platform-libraries CONTEX expiration connection-error document datastream-api description java-8 setup denied-by-src logging entitlements lpc refresh-message status error-400 url c volume futures deny-authentication level-2 FID warm-standby sink-driven-source ssl dss-rest-api ommconsumer record-matching-api open-dacs condition-codes refinitiv-data-platform workspace typescript asynchronous error-message rt-contribute page ping caching performance sample-code race-condition non-interactive-provider port-number exchange-codes market-holidays configuration angular api-key datastream ipa derivatives socket-exception rt-get symbology batch-request php session