Is it possible to have a UWP App Service in a Windows 10 IoT Core background app?
I used the Windows IoT Core Project Template to create a background app that reads sensors on a timer, used the Windows 10 IoT dashboard to make the background app start automatically when the device powers up, and that all works fine. Now I want to make a GUI that can get the sensor data from the background app.
Using the tutorial to create and consume an app service, I learned some things about creating UWP App Services. I was able to get an app service to work when the app itself is a GUI/XAML app, and the code for the app service must be in a referenced UWP comonnent (.winmd). When the code for the app service is in the GUI app, every connection request returns AppServiceUnavailable. Similarly, when I try to add an app service to my Windows 10 IoT Core background app (a .winmd itself), all open connection attempts result in AppServiceUnavailable. I tried putting the app service code in a separate .winmd, but the same happens.
How can I get a GUI app to talk to a background app on the same device?
I found instructions on how to enable localhsot (loopback) communication, but it would be better if I could simply deploy the GUI and background apps without having to change the OS configuration.
There is an example of implementing an app service in a background app on Windows IoT Core here: https://github.com/microsoft/Windows-iotcore-samples/tree/develop/Samples/AppServiceSharedNotepad
Does that help?