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