So calendar sync appears back to normal on OC web interface, as well as android calendar. However when i turn the sync option on for tasks in DAVdroid, it appears that recurring events dissappear from Thunderbird. I have 5 calendars currently synced, and my calendar that has most of my entries was missing several or maybe all items that I have set to repeat every weekday. Any ideas, is this OpenTasks doing, or what? I understood that OpenTasks did not support recurring tasks, but it shouldn’t make them or events disappear unless they are modified from within OpenTasks. Point me to any relevant logs you may need and I’ll try to figure out how to get them. This has been pretty frustrating as I am using this calendar for work and personal. So the original issue of this post is fixed, should this be posted as another topic? Thanks.
secp521r1 → javax.net.ssl.SSLHandshakeException: Handshake failed
GuilleW last edited by rfc2822
Hi. I’m using Nextcloud and DAVx⁵ to sync.
Since DAVx⁵ 2.5.x, it doesn’t work due to modern cyphers. So I try new updates and downgrade to 2.4.x each time if it doesn’t work.
But 2.4.x versions are not available anymore on F-droid, and now I can’t sync my cals anymore.
Here’s the log.
Please set your server to correct TLS ciphers (according to TLS specs), then it should work.
If you really need an old DAVx⁵ version (which should only be necessary for Android <4.4): https://www.davx5.com/faq/can-i-use-davdroid-with-an-old-android-version
Hi, and thank you for the fast reply.
I think I already do that, but in that case how to find cyphers missing in my conf ?
@GuilleW Hard to say… Conscrypt provides those protocols/ciphers: https://github.com/google/conscrypt/blob/master/CAPABILITIES.md
Which protocols/ciphers does your server allow/require?
Is your server publicly accessible?
@GuilleW Also try to change the network method (WiFi / mobile) and try again. Maybe some firewall or so interrupts the connection.
@devvv4ever Already tested, Wifi at home and 4G at work, same issue.
I’m using Samsung Galaxy Note 3 (SM-N9005) on Android 5.0
Tested and working versions of DAVx⁵
I have just used your nginx config on our server for testing and it syncs without problems with DAVx⁵ 2.5.1 (Android 4.4 + 8)…
Unfortunately, I won’t be able to provide any additional info unless I can give a try on the server myself…
I updated my nextcloud instance to “Nextcloud 15.0.10” and try the last update “DAVx⁵ 2.5.2-ose”.
Still not work, so… back to “DAVx⁵ 188.8.131.52-ose”.
I prefer keep my server private, but can I send you a shared calendar on my Nextcloud in PM ?
@GuilleW Of course
Link sent in PM !
Thanks! Can you send your Web server configuration (SSL parameters), too? For some reason, the server denies new DAVx⁵ requests with “Handshake failure”, but there is no more information. I have checked ciphers etc. and they don’t seem to be the problem.
GuilleW last edited by GuilleW
My Nginx config is online on my Gitlab repo :
All about SSL is in /etc/nginx/conf.d/ssl.conf file
And Nextcloud domain config is here /etc/nginx/sites-available/nextcloud
Does it work when you use the secp384r1 curve (
Thank you for advices.
I removed data of DAVx⁵ app, then uninstalled it.
I did a clean install of DAVx⁵ 2.5.2-ose.
Now, sync works perfectly ! (Yey!) but … now when I tap the + button on S planer (Samsung app for calendar) to add an event on Test calendar, it crash.
Back to “DAVx⁵ 184.108.40.206-ose”, S Planner still crash.
I’ll update nextcloud to Nextcloud 16.0.3.