SmartWebsocket2 - If exchange type is invalid, API does not throw any error

[ashigro]

I thought of posting it for future improvement or helping others. Somehow, I unknowingly updated exchange type as '0' in my code and I stopped getting any streaming data. It took me a few hours to figure-out the problem after finally comparing with previous version of code.

Documentation
https://smartapi.angelbroking.com/docs/WebSocket2

Following are valid exchange types:

tokenList[].exchangeType Integer M

exchange type

1 (nse_cm)

2 (nse_fo)

3 (bse_cm)

4 (bse_fo)

5 (mcx_fo)

7 (ncx_fo)

13 (cde_fo)