Transferring data over socket failed about laravel-client

[Namoshek]

Oh yeah, sure. I know what the problem is. It's actually quite obvious. You are connecting to the broker with the same client id from multiple HTTP requests. The clients "kick each other" from the server, causing disconnects.

If you do not specify MQTT_CLIENT_ID in the .env file, a random one will be generated for you. So you do not have to do this manually.

[pheelaphong]

I edited
Now working, not error
I changed
'client_id' => env('MQTT_CLIENT_ID'),
to
'client_id' => env('MQTT_CLIENT_ID').rand(),
I don't know if it is related or not, but it working

I have more questions in frontend

You have an idea about subscribe. without loop setTimeout
Now I do loops all the time.
From my code

$( document ).ready(function() {
    subscribe('xxxxx');
});
    
function subscribe(topic) {
    $.ajax({
        url: 'mqttsub/' + topic,
        dataType: 'JSON',
        cache: false,
        success: function(res) {
            console.log(res.message);
            if (res.message === "ON") {
                 //ON
            } else {
                 //OFF
            }
            setTimeout(function() {
                subscribe(topic)
            }, 1000);
        },
        statusCode: {
            500: function() {
                console.log('reconnect');
                subscribe(topic)
            }
        }
    });
}

Hope you understand I'm not good English

[Namoshek]

That's a genuine error when the connection has been lost, as the message states. It is most likely related to your code, e.g. because you are not calling $mqtt->loop(). If you don't call this method, there won't be sent any pings to the broker and the after some time, the broker will consider your client disconnected and close the socket.

If you have problems, please share some code and probably also logs. It makes it a lot easier to help.

[pheelaphong]

That's a genuine error when the connection has been lost, as the message states. It is most likely related to your code, e.g. because you are not calling $mqtt->loop(). If you don't call this method, there won't be sent any pings to the broker and the after some time, the broker will consider your client disconnected and close the socket.

If you have problems, please share some code and probably also logs. It makes it a lot easier to help.

public function mqtt_pub(Request $request)
    {
        $topic = $request->route('topic');
        $msg = $request->route('msg');
        $mqtt = MQTT::connection();
        $mqtt->publish('cmnd/' . $topic . '/POWER', $msg, 0);

        /** @var \PhpMqtt\Client\Contracts\MqttClient $mqtt */
        $result = [];

        $mqtt = MQTT::connection();
        $mqtt->subscribe('stat/' . $topic . '/POWER', function (string $topic, string $message) use ($mqtt, &$result) {
            $result['topic'] = $topic;
            $result['message'] = $message;

            $mqtt->interrupt();
        }, 1);
        $mqtt->loop(true);

        return response()->json($result, 200);
        //$this->mqtt_sub();
    }
    
    public function mqtt_sub(Request $request)
    {
        $topic = $request->route('topic');
        $mqtt = MQTT::connection();
        $mqtt->publish('cmnd/' . $topic . '/POWER', '', 0);
        $result = [];
        $mqtt->subscribe('stat/' . $topic . '/POWER', function (string $topic, string $message) use ($mqtt, &$result) {
            $result['topic'] = $topic;
            $result['message'] = $message;

            $mqtt->interrupt();
        }, 1);
        $mqtt->loop(true);
        return response()->json($result, 200);
    }

Sorry, this is my first time.

[pheelaphong]

$( document ).ready(function() {
    subscribe('xxxxx');
});
    
function subscribe(topic) {
    $.ajax({
        url: 'mqttsub/' + topic,
        dataType: 'JSON',
        cache: false,
        success: function(res) {
            console.log(res.message);
            if (res.message === "ON") {
                 //ON
            } else {
                 //OFF
            }
            setTimeout(function() {
                subscribe(topic)
            }, 1000);
        },
        statusCode: {
            500: function() {
                console.log('reconnect');
                subscribe(topic)
            }
        }
    });
}

[Namoshek]

I don't see anything wrong with the code. It isn't really clean but it should do the job. Without further infos regarding MQTT client configuration and some logs, I don't think I'm able to help.

[pheelaphong]

configuration

'default' => [

            // The host and port to which the client shall connect.
            'host' => 'xxxx',
            'port' => 1883,

            // The MQTT protocol version used for the connection.
            'protocol' => MqttClient::MQTT_3_1,

            // A specific client id to be used for the connection. If omitted,
            // a random client id will be generated for each new connection.
            //'client_id' => "ClientID".rand(),
            'client_id' => env('MQTT_CLIENT_ID'),

            // Whether a clean session shall be used and requested by the client.
            // A clean session will let the broker forget about subscriptions and
            // queued messages when the client disconnects. Also, if available,
            // data of a previous session will be deleted when connecting.
            'use_clean_session' => env('MQTT_CLEAN_SESSION', true),

            // Whether logging shall be enabled. The default logger will be used
            // with the log level as configured.
            'enable_logging' => env('MQTT_ENABLE_LOGGING', true),

            // Defines which repository implementation shall be used. Currently,
            // only a MemoryRepository is supported.
            'repository' => MemoryRepository::class,

            // Additional settings used for the connection to the broker.
            // All of these settings are entirely optional and have sane defaults.
            'connection_settings' => [

                // The TLS settings used for the connection. Must match the specified port.
                'tls' => [
                    'enabled' => env('MQTT_TLS_ENABLED', false),
                    'allow_self_signed_certificate' => env('MQTT_TLS_ALLOW_SELF_SIGNED_CERT', false),
                    'verify_peer' => env('MQTT_TLS_VERIFY_PEER', true),
                    'verify_peer_name' => env('MQTT_TLS_VERIFY_PEER_NAME', true),
                    'ca_file' => env('MQTT_TLS_CA_FILE'),
                    'ca_path' => env('MQTT_TLS_CA_PATH'),
                    'client_certificate_file' => env('MQTT_TLS_CLIENT_CERT_FILE'),
                    'client_certificate_key_file' => env('MQTT_TLS_CLIENT_CERT_KEY_FILE'),
                    'client_certificate_key_passphrase' => env('MQTT_TLS_CLIENT_CERT_KEY_PASSPHRASE'),
                ],

                // Credentials used for authentication and authorization.
                'auth' => [
                    'username' => env('MQTT_AUTH_USERNAME'),
                    'password' => env('MQTT_AUTH_PASSWORD'),
                ],

                // Can be used to declare a last will during connection. The last will
                // is published by the broker when the client disconnects abnormally
                // (e.g. in case of a disconnect).
                'last_will' => [
                    'topic' => env('MQTT_LAST_WILL_TOPIC'),
                    'message' => env('MQTT_LAST_WILL_MESSAGE'),
                    'quality_of_service' => env('MQTT_LAST_WILL_QUALITY_OF_SERVICE', 0),
                    'retain' => env('MQTT_LAST_WILL_RETAIN', false),
                ],

                // The timeouts (in seconds) used for the connection. Some of these settings
                // are only relevant when using the event loop of the MQTT client.
                'connect_timeout' => env('MQTT_CONNECT_TIMEOUT', 60),
                'socket_timeout' => env('MQTT_SOCKET_TIMEOUT', 5),
                'resend_timeout' => env('MQTT_RESEND_TIMEOUT', 10),

                // The interval (in seconds) in which the client will send a ping to the broker,
                // if no other message has been sent.
                'keep_alive_interval' => env('MQTT_KEEP_ALIVE_INTERVAL', 10),
            ],

        ]

I just changed host, username, password

this code working. but just sometime failed

[pheelaphong]

.env

---

MQTT_HOST=xxx
MQTT_AUTH_USERNAME=xxx
MQTT_AUTH_PASSWORD=xxx
MQTT_CLIENT_ID=1234567

---

[Namoshek]

Weird. Please also let me know what broker you are using (Mosquitto, HiveMQ, EMQ X, ...) and show some logs. If you configure logging to use debug as level, also the MQTT client will log with debug level. It is definitely weird behavior though.

[Namoshek]

Since the cause of the problem has been discussed, I'm closing this issue. Regarding your ajax question, I cannot help. This sounds like a common question though, so you might find an answer on StackOverflow or so.

[3urdparty]

Thanks @Namoshek I've been stuck on this issue for a while. I didn't know about subtlety.