How can the Nginx configuration be adjusted to redirect connections towards an MQTT broker?

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To redirect connections towards an MQTT broker using Nginx, you can use the Nginx stream module. The stream module allows Nginx to listen and proxy TCP/UDP connections.

Here's an example Nginx configuration file:

stream {
    upstream mqtt_broker {
        server <MQTT_BROKER_IP_ADDR>:<MQTT_BROKER_PORT>;
    }
    server {
        listen 1883;
        proxy_pass mqtt_broker;
    }
}

In the stream context, we define an upstream block to specify the MQTT broker's address and port. In the server block, we listen on port 1883 and use proxy_pass directive to forward the TCP connections to the upstream MQTT broker.

Make sure to replace <MQTT_BROKER_IP_ADDR> and <MQTT_BROKER_PORT> with the appropriate values for your MQTT broker's address and port.

Save the configuration and reload Nginx: sudo nginx -s reload.

Test the MQTT connection by using an MQTT client to connect to the Nginx server on port 1883. The client should be able to connect to the MQTT broker through the Nginx proxy.