Hi @melarbi
I am sorry but I believe that the answer is no, you cannot use C++ or Java APIs to retrieve streaming data if you only have access to Eikon Desktop product.
I would suggest that you get in touch with your Refinitiv Account Manager and see other additional products such as ERT(Elektron Realtime) in Cloud which provide C++ and Java APIs for streaming data.
We do not have a Java or C++ library for Eikon API.
RDP is a RESTful service and provides both streaming and reference data. You can use any language to invoke these API calls. The streaming data uses websockets. So here are a few things that you can try:
RDP REST API sample in Java
Websocket API samples for Realtime data in cloud
Elektron API sample for Realtime data in cloud
Hello @melarbi
You can use the Eikon Data API to retrieve streaming data. Please see more detail in "Streaming API - How to retrieve real-time streaming prices" chapter in Eikon Data API Tutorials page.
Please note that Eikon 4/Refinitiv Workspace application must be running when you use the Eikon Data API Python library.