The REST paper explicitly mentions that REST and HTTP only try to solve the common cases, and solve those well. If something is not covered well then you’re exp

The REST paper explicitly mentions that REST and HTTP only try to solve the common cases, and solve those well. If something is not covered well then you’re explicitly advised to leave it to another protocol. You could for example have a GET response that (due to HATEOAS) suggests a websocket url including a topic to subscribe to.