[Bug]: WebSocket not completely disconnected #1817
Description
MQTTjs Version
5.4.0
Broker
mosquitto v2.0.18
Environment
Browser
Description
I executed the mqtt.Client#end() function with the force option on the Websocket connection.
But it doesn't seem to be actually disconnected.
It happens in the browser, not in the Node program
The following sample code did not send a Will message.
Not when the client disconnects, Will message was sent when the broker disconnects after keep_alive seconds.
Minimal Reproduction
u1 user is monitoring Will message arrival while u2 is forcibly disconnecting
u1
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="Pragma" content="no-cache">
<meta http-equiv="Cache-Control" content="no-cache">
<title>user 1</title>
</head>
<body>
<script src="https://unpkg.com/[email protected]/dist/mqtt.js"></script>
<script>
const connectOptions = {
keepalive: 300,
clean: true,
clientId: 'u1',
reconnectPeriod: 0
}
const uri = 'ws://127.0.0.1:8080'
const client = mqtt.connect(uri, connectOptions);
client.on('message', (topic, message, packet) => {
console.warn(`topic=${topic}, qos=${packet.qos}, pid=${packet.messageId}, message=${message}`)
})
client.once('connect', (packet) => {
console.info(`connect event. packet = ${JSON.stringify(packet)}`)
client.subscribe('t1', { qos: 1 }, (err, granted) => {
if (!err) {
console.info(`subscribed. granted:${JSON.stringify(granted)}`)
}
})
});
</script>
</body>
</html>u2
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="Pragma" content="no-cache">
<meta http-equiv="Cache-Control" content="no-cache">
<title>user 2</title>
</head>
<body>
<script src="https://unpkg.com/[email protected]/dist/mqtt.js"></script>
<script>
const num = Date.now()
const connectOptions = {
keepalive: 60, // 60 sec
clean: true,
clientId: 'u2',
reconnectPeriod: 0
}
connectOptions.will = {topic: 't1', qos: 1, payload: `u2 is dead. ${num}`}
const uri = 'ws://127.0.0.1:8080'
const client = mqtt.connect(uri, connectOptions);
client.on('close', () => {
console.info(`close event`)
});
client.on('error', (err) => {
console.info(`error event. err = ${err}`)
});
client.on('end', () => {
console.info(`end event`)
});
client.once('connect', (packet) => {
console.info(`connect event. packet = ${JSON.stringify(packet)}`)
setTimeout(() => {
console.warn(`force disconnect`)
client.end(true)
}, 5000) // after 5sec
});
</script>
</body>
</html>environment
- mosquitto v 2.0.18
- mqtt.js 5.4.0
Debug logs
--