Radicale server with SSL

[nilamo]

certificate = c:/radicale/ssl/server_cert.pem

iPhones have a c:/ drive? Unless something's radically changed, I don't understand how that could work.

It looks like the new iphone version uses a new version of openssl, but radicale/python is using an old version. Have you tried running [iocde]pip install --upgrade radicale[/icode] to check for updates? I don't know what package manager the iphone uses, but there might be some flavor of apt/yum, and you could check for python-openssl updates?