MQTT 1884 connection failed

Question

I am using mqtt for a messaging system on my site. Well on my local machine everything works fine but on my site (production) I am getting an error:

vendor.bbaf8c4….bundle.js:1 WebSocket connection to 'ws://localhost:1884/mqtt' failed: Error in connection establishment: net::ERR_CONNECTION_REFUSED

I am using Ubuntu within my Webserver and I gave the port 1884 free.

What this error meaning?

I am using Angular4 and I add the connection within AfterViewInit

ngAfterViewInit() {
    setTimeout(()=>{

        this.messageservice.createMqttConnection(this.userId);
    }, 200)

}

The connection with Paho on my client site looks like:

  this._client = new Paho.MQTT.Client("localhost", 1884, id.toString());

Let assume my domains is mydomain.com should I replace it with localhost?

localhost is the address for the machine the code is running on, I assume this needs changing to point to your production environment — hardillb, Oct 15 '17 at 11:41
ok lets assume my domain name is mydomain.com, should I replace it with localhost? this._client = new Paho.MQTT.Client("localhost", 1884, id.toString()); — mogli mogli, Oct 15 '17 at 12:46
The other way round, you should replace `localhost` with `mydomain.com` — hardillb, Oct 15 '17 at 12:48

score 0 · Accepted Answer · answered Oct 15 '17 at 17:21

As thrashed out in the comments:

The hostname in your app needs to point to your domain e.g. mydomain.com not localhost

localhost will always point to the machine the code is running on so is very unlikely to be what you want for a production deployment of an application.

MQTT 1884 connection failed

1 Answers1