mqtt-client

mqtt-client

MQTT client for Nexus IoT devices. Connects to EMQX broker via mTLS, subscribes to device-specific topics and publishes telemetry.

Build

cargo build --release -p mqtt-client

Run

mqtt-client run -c config.json

Certificates

See infrastructure/emqx/certs/ for certificate generation.

Configuration

Built-in defaults are used when no file is provided. Pass --config config.json to override:

{
  "mqtt": {
    "host": "localhost",
    "port": 8883,
    "keep_alive_secs": 60,
    "channel_capacity": 10,
    "ca_cert": "/etc/mqtt-client/certs/ca.pem",
    "client_cert": "/etc/mqtt-client/certs/client.pem",
    "client_key": "/etc/mqtt-client/certs/client.key"
  },
  "storage": {
    "db_path": "./db/client.db"
  }
}