New connection to WebDav not working over plain http nor self-signed https (iOS).

[EvilVir]

I've just setup new WebDav server and created a vault there using desktop version of Buttercup - all works perfectly. Buf when I try to add that vault now to iOS app, I'm stuck on the Connection step with testing failing.

I checked both plain http (preferred) and self-signed https and no luck with either of these.

What's strange is that in server's logs (using Nginx in Docker) I don't see any connection attempts whatsoever from the mobile app. I checked accessibility of that url in general by browsing to it in Safari and all works ok. It's like Buttercup isn't even trying to connect, just failing right away.

I then tried with direct IP address and this time it worked. So it makes me think that Buttercup on iOS doesn't use DNS servers that are configured on the connection, but uses some predefined public ones?

[perry-mitchell]

Buttercup uses whatever DNS servers are provided by iOS - we don't configure network connections at such a level.

Can you resolve your server in safari on the same device? What kind of service do you have that's providing WebDAV, Nginx? Are you sure it's configured properly and you can access it via other apps on other machines in your network?

[EvilVir]

Hi, yes I can resolve it just fine in Safari on same device. I can access it via Buttercup for desktop and now I can access it with iOS application but I had to do it via IP address (on desktop I can use domain).

Using Nginx with ngx_http_dav_ext_module (to provide PROPFIND method).

[Quercus53]

I have the same issue.
My webdav server runs on a Synology nas.
With Android file explorer plugin for WebDav I can connect instantly.
But when I try the same connect also from the same Android phone using Buttercup create vault using WebDav I get an error message.
WebDav connection test failed.
Without the option to connect to my nas using webdav the app has no use for me.
If this would work that would be wonderfully.

I do not want to use a public cloud server and therefore use (or try to use) my private nas.

[jomimota]

Hi,
I have also the same problem.
I can't connet from my android phone buttercup app to my Asustor nas Webdav.
With file explorer I have no problems.

[WizardOfWor1969]

I have the same issue as well. I am using synology webdav server. If I type a server.localdomain it does not work, if I type the ip it does. I would add that the Buttercup desktop app does not have this issue.