websocket websocket api webinar websocket webinar elektron websockets api elektron api edp ert in cloud python websocket api market data sample request authentication python api trep elektron websocket api ert api ADS ewa connection ert cloud websockets cloud posting connectivity websocket java refresh login error batch snapshot conflation marketbyorder license documentation Service state streaming historical trep elektron refinitiv fields webscoket c# disconnect realtime aws node.js time historical data batchrequest qos javascript record creation and updating. symbol subscriptions trkd streaming port socket eaas connection closed json token unix descriptions mrn posting websockets timeout simplified stream webscoket api access denied timeseries #python failover chain ric login tradesafe ric key composite ids-rest bad gateway synchronous production url data error 400 c# .net api approval websockets post limitation view ric multiple electron real time in the cloud streamstate samples trep api analytics condition codes authentication token period ews performance mitch logs contribution client_id websock currency pair partial level 2 c elektron_dd elektron in cloud exception ask quote_date websocket android #websocket #json #sendrequest tick null values rfa java phyton electron api ezd real-time-data .net rmtes date test access market status angular-ui caching symbology dds_trce address currency conversion rates web scoket failure keys OMM tsa typescript domain delayed deniedbysrc authhostname field definition ids http post testing error message eikon marketprice websocket ios c# .net csharp composite exchange codes wss graphs status erp time and sales ric api call date close market fx api-key eap sso ws client ids-ws 502 reuters api datafields error code 400 access market data MarketFeed support suspect unable news identifiers tenors post redundancy api requests sink_driven_src trkd websocket fids dds auth_url economic indicators currency websocket-api holida bid web api electron elektron connect ert sdk fx rate web sockets json quotim_ms timestamp warrants override trkd websockets java streaming credentials elecktron api news analytics