I have successfully tried the SSE sample using the URL https://postman-echo.com/server-events/:numberOfEvents and I can see the SSE events streaming in.
Now I want to try the same using the TradeStation API.
For example, the SIM API for streaming Orders is a GET to: https://sim.api.tradestation.com/v3/brokerage/stream/accounts/{AccountNumber}/orders
Send indicates a 200 OK and the Receiving Response is blinking (i.e. the button to the left of this) but no SSE Events are shown.
I have tried with and without Content-Type (the sample does not use Content-Type).
The TradeStation Stream API works fine in code but in Postman does not. Note that TradeStation indicates the Content-Type as application/vnd.tradestation.streams.v3+json but this is does not appear to be absolutely necessary.
How can I use SSE for other endpoints. Is there additional configuration (the Postman example indicates that SSE is automatic).
Postman version v11.57.4
Windows 11
Please advise. Thanks
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