core-model/org.meshtastic.core.model/MqttConnectionState

MqttConnectionState

sealed class MqttConnectionState(source)

App-level MQTT proxy connection state, decoupled from the MQTT library's internal type.

Modeled as a sealed class so disconnect / reconnect events can carry diagnostic context — the user-facing reason for an unexpected disconnect, or the most recent reconnect attempt failure — without requiring downstream consumers to depend on the MQTT library's exception types.

Inheritors

SubscriptionRefused

Types

data object Connected : MqttConnectionState

The MQTT client is connected and subscribed to topics.

data object Connecting : MqttConnectionState

The MQTT client is actively connecting to the broker.

data class Disconnected(val reason: String? = null) : MqttConnectionState

The MQTT client is not connected to the broker.

data object Inactive : MqttConnectionState

The MQTT proxy has not been started (disabled or not yet initialized).

data class Reconnecting(val attempt: Int = 0, val lastError: String? = null) : MqttConnectionState

The MQTT client lost connection and is attempting to reconnect.

SubscriptionRefused

data class SubscriptionRefused(val refused: Map<String, String>, val granted: Int) : MqttConnectionState

The MQTT client is connected, but the broker refused some or all of the topic filters it asked for.