Find best sequence diagram solution

Question

How can CLIENT continuously receive data from SERVER? I think my sequence diagram is complex solution. I just want Client set connect with Server 1 time then Server continuously send data to Client anyway. Here I use API-Restful + Mosquitto

Answer 1

MQTT can run over a Websocket connection so it is possible to subscribe directly to the MQTT broker from within a webpage. This would remove the need for any REST calls.

The Paho Javascript client supports MQTT of Websockets.

The broker will need to be configured to support MQTT over Websockets on a separate port from the normal native MQTT support. Details of how to set up Mosquitto to do this can be found in the man page