OK, the problem is solved.
If I set the proxy in the Wifi connection, Android says that the connection is limited. As soon as you put the same proxy but in transparent mode (not set in Android, but filter correctely by the router when Android try to connect to outside), the connection is fully established and the synchronization is immediately done.
Sorry for the noise.
I would appreciate if one day, you may remove the needed support to Android sync…
Thanks a lot
i use your App to sync the Adressbook and Calendar to the Nextcloud. (20.0.0)
Got this message when Davx5 try to sync in the Background. Batteryoptimizion is disabled for the App.
Huawei P40pro (Android 10)
There seems to be some connectivity problem. Can you access the URL with your browser? Does it work when you use WiFi/mobile network? Do you have a firewall?
@rfc2822 hello, i can access the URL. I use fail2ban and ufw on my server.
@esmuellerthier Sorry, I mean with the browser on the mobile device, not on your PC or elsewhere.
DAVx5 is blocked access to the given host/port and so the connection times out. There’s nothing DAVx5 can do against that.