Merge branch 'testing' of https://github.com/YunoHost-Apps/ffsync_ynh into testing

README.md

@@ -26,6 +26,26 @@ By default, a server set up will defer authentication to the Mozilla-hosted acco
 
 Once installed, reaching `http://domain.tld/path` should show a page explaining how to configure it.
 
+### Solving problems with Android
+
+The sure-fire way to know what Sync on Android is really doing is to observe the Android device log using adb logcat. You’ll want to bump your log-level:
+```
+adb shell setprop log.tag.FxAccounts VERBOSE
+```
+
+Then, you can observe the log using:
+```
+adb logcat | grep FxAccounts
+```
+
+It’s best to observe the log while you force a sync from the Android Settings App. You should see output like:
+
+```
+D FxAccounts(...) fennec :: BaseResource :: HTTP GET https://token.stage.mozaws.net/1.0/sync/1.5
+...
+D FxAccounts(...) fennec :: BaseResource :: HTTP GET https://sync-4-us-east-1.stage.mozaws.net/
+```
+
 ## :red_circle: Antifeatures
 
 - **Upstream not maintained**: This software is not maintained anymore. Expect it to break down over time, be exposed to unfixed security breaches, etc.