EMA C++ RDM Usage Guide : 1 Introduction : 1.5 JSON
 
1.5 JSON
As of RTSDK 2.0.1.L1, the Enterprise Message API supports WebSocket protocols including rssl.json.v2 and tr_json2 (though LSEG intends to deprecate tr_json2 at some time in the future). For further details on WebSocket domain models, refer to the WebSockets API protocol specification on GitHub at https://github.com/Refinitiv/websocket-api/blob/master/WebsocketAPI_ProtocolSpecification.pdf.