How can I retrieve historical data for previous months on which token to use.
in this link
https://margincalculator.angelbroking.com/OpenAPI_File/files/OpenAPIScripMaster.json
only current traded scrips are listed..
help will be appreciated thank you.

websocket is autoclosing in less than 5 mins..tried with both python and java..@admin could you assist me with this issue...
without making anychanges to code available in GIT i am using however its auto closing..anything i need to add extra..

[{"tvalue":"09/06/2021 09:49:57","name":"tm"}]
[{"tbq":"337076","lo":"1476.65","c":"1483.05","e":"nse_cm","ltq":"27","ltp":"1492.25","ltt":"09/06/2021 09:49:56","bp":"1492.20","bq":"106","ap":"1486.40","bs":"9","tsq":"381268","nc":"00.6203","v":"1090743","tk":"1333","name":"sf","to":"1621280395.20","sp":"1492.25","cng":"09.20"}]
[{"e":"nse_cm","tk":"1333","name":"sf","ltq":"7","ltp":"1492.20","ltt":"NA"}]
onDisconnected