To many active connections with DAVx⁵

[prsnbrg]

Steps to reproduce

1. Install DAVx⁵ from F-Droid (latest-version)
2. Create a new sync with an owncloud server
3. Wait and see after a day a lot of "active" connections in the personal security settings.

Expected behaviour

Tell us what should happen
Only active connections to the owncloud are shown.
And all inactive connections over Webdav delete after e.g. 30min.

Actual behaviour

Tell us what happens instead
I see a lot of connections of the last days and if i sync every 30 min or every hour this is a lot.

Server configuration

Operating system:

Web server:
Apache2
Database:

PHP version:

ownCloud version: (see ownCloud admin page)
10.2.1
Updated from an older ownCloud or fresh install:

Where did you install ownCloud from:

Signing status (ownCloud 9.0 and above):

Login as admin user into your ownCloud and access 
http://example.com/index.php/settings/integrity/failed 
paste the results into https://gist.github.com/ and puth the link here.

The content of config/config.php:

Log in to the web-UI with an administrator account and click on
'admin' -> 'Generate Config Report' -> 'Download ownCloud config report'
This report includes the config.php settings, the list of activated apps
and other details in a well sanitized form.

or 

If you have access to your command line run e.g.:
sudo -u www-data php occ config:list system
from within your ownCloud installation folder

*ATTENTION:* Do not post your config.php file in public as is. Please use one of the above
methods whenever possible. Both, the generated reports from the web-ui and from occ config:list
consistently remove sensitive data. You still may want to review the report before sending.
If done manually then it is critical for your own privacy to dilligently
remove *all* host names, passwords, usernames, salts and other credentials before posting.
You should assume that attackers find such information and will use them against your systems.

List of activated apps:

If you have access to your command line run e.g.:
sudo -u www-data php occ app:list
from within your ownCloud installation folder.

Are you using external storage, if yes which one: local/smb/sftp/...

Are you using encryption: yes/no
no
Are you using an external user-backend, if yes which one: LDAP/ActiveDirectory/Webdav/...

LDAP configuration (delete this part if not used)

With access to your command line run e.g.:
sudo -u www-data php occ ldap:show-config
from within your ownCloud installation folder

Without access to your command line download the data/owncloud.db to your local
computer or access your SQL server remotely and run the select query:
SELECT * FROM `oc_appconfig` WHERE `appid` = 'user_ldap';


Eventually replace sensitive data as the name/IP-address of your LDAP server or groups.

Client configuration

Android 9 with DAVx⁵ 2.5.5-ose

Some of the connections from the settings:
DAVx5/2.5.5-ose (2019/09/28; dav4jvm; okhttp/3.12.5) Android/9 vor einem Tag DAVx5/2.5.5-ose (2019/09/28; dav4jvm; okhttp/3.12.5) Android/9 vor einem Tag DAVx5/2.5.5-ose (2019/09/28; dav4jvm; okhttp/3.12.5) Android/9 vor einem Tag DAVx5/2.5.5-ose (2019/09/28; dav4jvm; okhttp/3.12.5) Android/9 vor einem Tag DAVx5/2.5.5-ose (2019/09/28; dav4jvm; okhttp/3.12.5) Android/9 vor einem Tag DAVx5/2.5.5-ose (2019/09/28; dav4jvm; okhttp/3.12.5) Android/9 vor einem Tag DAVx5/2.5.5-ose (2019/09/28; dav4jvm; okhttp/3.12.5) Android/9 vor einem Tag DAVx5/2.5.5-ose (2019/09/28; dav4jvm; okhttp/3.12.5) Android/9 vor einem Tag DAVx5/2.5.5-ose (2019/09/28; dav4jvm; okhttp/3.12.5) Android/9 vor einem Tag DAVx5/2.5.5-ose (2019/09/28; dav4jvm; okhttp/3.12.5) Android/9 vor einem Tag DAVx5/2.5.5-ose (2019/09/28; dav4jvm; okhttp/3.12.5) Android/9 vor einem Tag DAVx5/2.5.5-ose (2019/09/28; dav4jvm; okhttp/3.12.5) Android/9 vor einem Tag DAVx5/2.5.5-ose (2019/09/28; dav4jvm; okhttp/3.12.5) Android/9 vor einem Tag

Reference issue at DAVx⁵ https://forums.bitfire.at/topic/2144/missing-logout-after-sync