Connectivity › Presence Publisher
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Presence Publisher

Regularly publish to an MQTT topic
Version: 2.0.0
Added: 18-01-2019
Updated: 07-01-2020
This free open-source app regularly publishes to a configurable MQTT topic whenever connected to a given WiFi network or in proximity to a Bluetooth beacon. It can be used to integrate the presence of your phone in home automation. The app uses the built-in Android alarm manager, so notifications are sent even if the phone is in stand-by. In addition to regularly scheduled checks, the app also reacts to changes in the network connection. The MQTT client supports anonymous and username / password authentication as well ass client certificate authentication. For more details on how to configure certificate-based authentication, please have a look at . Permissions • ACCESS_BACKGROUND_LOCATION: on Android 10+, necessary to retrieve SSID of connected WiFi while running in background • ACCESS_FINE_LOCATION: necessary to discover beacons; on Android 9+, necessary to retrieve SSID of connected WiFi • ACCESS_NETWORK_STATE: necessary to register network change listener • ACCESS_WIFI_STATE: necessary to retrieve SSID of connected WiFi • BLUETOOTH: necessary to communicate with beacons • BLUETOOTH_ADMIN: necessary to discover beacons • INTERNET: only necessary if your MQTT server is not running locally • RECEIVE_BOOT_COMPLETED: necessary to start service on start-up • REQUEST_IGNORE_BATTERY_OPTIMIZATIONS: on Android 6+, necessary to request disabling battery optimization • WRITE_EXTERNAL_STORAGE: only necessary if you want to export log files in Android 4.0 - 4.3
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