'Publish a ServerHeartbeatStartedEvent to all server heartbeat
listeners.
:Parameters:
- `connection_id`: The address (host/port pair) of the connection.'

def publish_server_heartbeat_started(self, connection_id):

    event = ServerHeartbeatStartedEvent(connection_id)
    for subscriber in self.__server_heartbeat_listeners:
        try:
            subscriber.started(event)
        except Exception:
            _handle_exception()
