fix: MQTT connect timeout wrapper, host list logging

Matthias Nott

2026-03-22 28fe0bf975a47e009232b56dd10b6944cde70064

 lib/services/mqtt_service.dart
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@@ -95,6 +95,7 @@
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     final clientId = await _getClientId();
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     final hosts = _getHosts();
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+    _mqttLog('MQTT: hosts=${hosts.join(", ")} port=${config.port}');
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     for (final host in hosts) {
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       if (_intentionalClose) return;
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@@ -162,8 +163,14 @@
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       // Set _client BEFORE connect() so _onConnected can subscribe
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       _client = client;
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-      _mqttLog('MQTT: connecting to $host:${config.port} as $clientId');
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-      final result = await client.connect();
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+      _mqttLog('MQTT: connecting to $host:${config.port} as $clientId (timeout=${timeout}ms)');
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+      final result = await client.connect().timeout(
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+        Duration(milliseconds: timeout + 1000),
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+        onTimeout: () {
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+          _mqttLog('MQTT: connect timed out for $host');
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+          return null;
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+        },
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+      );
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       _mqttLog('MQTT: connect result=${result?.state}');
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       if (result?.state == MqttConnectionState.connected) {
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         client.autoReconnect = true; // Now enable auto-reconnect for the live connection