make sure that api.refinitiv.com is used for Service Discovery

@Gurpreet Thank you for the reply. Indeed, user name should be Machine ID. I see that difference lies in this line

discovery_url = 'https://api.refinitiv.com/streaming/pricing/v1/';

and subsequent codes using this line. However, I am using R code, and in this folder there is no 'discovery' file. Or in R there is no option for using this discovery URL?

@Gurpreet in example when doing it Python I got following URL when connecting to https://api.refinitiv.com/streaming/pricing/v1/ :

Connecting to WebSocket wss://apac-3-t3.streaming-pricing-api.refinitiv.com:443/WebSocket for session1... 

However, it seems that I should better use "endpoint":"emea-1-t3.streaming-pricing-api.refinitiv.com" or "endpoint":"emea-3-t3.streaming-pricing-api.refinitiv.com". Using apac-3-t3 I also Received messaged from Refinitiv. Which is better to use?

Is the difference of 'regular' and 'discovery' code in the fact that 'regular' gets refresh token and sends a market information message (connects to websocket) via only https://api.refinitiv.com:443/auth/oauth2/v1/token , while 'discovery' 1) gets refresh token via https://api.refinitiv.com:443/auth/oauth2/v1/token 2)then searches for endpoint via https://api.refinitiv.com/streaming/pricing/v1/ 3) when endpoint found, then sends market information via wss://apac-3-t3.streaming-pricing-api.refinitiv.com:443/WebSocket (in My case) (connects to websocket via this link)?

I.e. If my steps for 'discovery' code are correct and I know my endpoint, can I use only steps 1) and 3) to get the market information (connect to websocket) (in set 3) the endpoint is manually written, to avoid step 2))?