Yes this includes WebSocket and HTTP connections from clients and calls to the HTTP/REST endpoints.
Using SSL / HTTPS
As of January 2019 not all libraries (Client/WebSocket and Server/HTTP/REST) use SSL by default. So, you will need to set up the library to use SSL.
See the library documentation for the libraries you are using for details on how to do this.
Future versions of the libraries may be updated to use SSL by default.
It is also possible to force connections to use TLS by enabling the Force TLS setting within an application’s dashboard settings.