How can I send and receive heart beat

[davidCcD]

In mqttjs, I use heart beat to keep connection alive, code like:

// send heart beat which is pingreq client.value.on("packetsend", packet => { console.log( moment().format("YYYY-MM-DD HH:mm:ss") + send ${packet.cmd} ); }); // receive heat beat which is pingresp client.value.on("packetreceive", packet => { console.log( moment().format("YYYY-MM-DD HH:mm:ss") + receive ${packet.cmd} ); });

Please let me know, how can I do these in mqtt - vue - hook ? Thank you!