listener 1883 allow_anonymous true max_keepalive 0 listener 8883 cafile /ca.crt keyfile /test.key certfile /test.crt require_certificate false allow_anonymous true max_keepalive 0 listener 9001 protocol websockets allow_anonymous true max_keepalive 0 listener 9443 protocol websockets cafile /ca.crt keyfile /test.key certfile /test.crt require_certificate false allow_anonymous true max_keepalive 0