Before the recording status was immediately changed by the Nextcloud
server when a recording was started or stopped. However starting or
stopping (but mostly starting) can take some time due to the
initialization of the display and audio device, starting the browser,
joining the call... so the recording status did not match the actual
status.
To address that now the recording server sends a notification back to
the Nextcloud server when the recording actually started or stopped, and
only then the Nextcloud server changes the recording status.
Signed-off-by: Daniel Calviño Sánchez <danxuliu@gmail.com>
