Update: to me feels similar like the following described earlier:
As it looks android sdk only allows https requests. But when using https requests, there is the problem with the self-signed certificate (openssl). How can I fix this? (as it's fixed in the desktop version). Or can this be fixed in a new release of the android version? I need joplin sync to work on android otherwise will have to look for alternative.
This is a strange problem to me.
Until end of last week, I could without problems sync between Joplin on Android and my nextcloud.
Then since approx last Monday, the sync does not work any more and I get the "Network request failed" errors
My nextcloud runs on the intranet only, let's call it my-server with a fixed local IP address (with a fritz box modem/route)
The Nextcould WebDav-URL in Android/Joplin is as follows:
I have a openssl certificate, but I have no redirect from http to https, I'm using apache2 on raspberry. Which means I can access my nextcloud instance both via http and https request. I use https wherever I can, I have basically left the http option (without a redirect) just for the purpose of the android Joplin client because this one obviously does not want to work with self-signed certificates. And running my nextcloud on the intranet on the host my-server will not allow me to create an "official" certificate, as I understand.
From Android device, here is what still works fine even today:
- accessing nextcloud with the official nextcloud client
- I can open via android browser the webdav URL stated above which then asks me for a username/password, then tells me the following, which I thinks makes sense as a positive response: "This is the WebDav interface. It can only be accessed by WebDav clients such as Nextcloud desktop sync client."
- I was even able to map the webdavn URL mentioned above as a webdav access in a android file explorer (in my case the ES file explorer pro) and I can open files and create new files.
Also to note that Joplin from Windows desktop still works like a charm.
The only "upgrade" I made on nextcloud was a cleanup on the trashbin and the versions (run the occ trashbin:expire and versions_expire). Not creative enough to understand how this would affect Joplin from Android.
So my initial conclusions:
- The webdav URL mentioned above is accessible from my android device (see above)
- I do not see any issue with the webdav service (as I can even embed via file explorer on android)
So my final conclusion:
I just have no idea what I can do to solve this problem.
Anyone have an idea? Would be highly appreciated.