| .. | .. |
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| 397 | 397 | Future<bool> _tryConnect(String host, String clientId, {int timeout = 5000}) async { |
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| 398 | 398 | try { |
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| 399 | 399 | final client = MqttServerClient.withPort(host, clientId, config.port); |
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| 400 | | - client.keepAlivePeriod = 30; |
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| 400 | + client.keepAlivePeriod = 120; // 2 min — iOS throttles bg network, short keepalive causes drops |
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| 401 | 401 | client.autoReconnect = false; // Don't auto-reconnect during trial — enable after success |
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| 402 | 402 | client.connectTimeoutPeriod = timeout; |
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| 403 | 403 | // client.maxConnectionAttempts is final — can't set it |
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