@khushboo.kumari
It depends on the server that you are connecting to.
For example, if the server is the Refinitiv Real-Time Optimized, you can use the RSSL_ENCRYPTED connection type.
If the server is Refinitiv Real-Time Distribution System (RTDS), direct feed, or edge device, the connection type could be RSSL_SOCKET.
Please let us know the server that you are using.