I need to test if a ssl server is likely to respond before doing any forward as I would otherwise “loose” a projection screen.
As the server uses only a self-signed certificate, basically all javascript tricks (iframe on the fly, jsonp, …) failed either due to Cross-Origin Resource Sharing (CORS) rules. Even after switching to php the first two methods failed (get header, fsockets) while I finally ended with a simple curl request

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://localhost:8443');
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);
if (curl_error($ch)[0]=="") header('Location: https://localhost:8443');

There are many $$$ systems. But there are also super nice systems like Big Blue Button, Apache Open Meeting and Jitsi that are working equally well if you stick to Chrome or Firefox.
I recommend Spreed WebRTC audio/video call and conferencing server. Just run

docker pull spreed/webrtc
docker run --rm --name my-spreed-webrtc -p 8080:8080 -p 8443:8443 \
-v `pwd`:/srv/extra -i -t spreed/webrtc

and you are done. The only issue  – how to route your local IP to the docker container?

sudo route -n add -net 0.0.0.0/16  146.x.x.x
sudo route -n delete 0.0.0.0/16  146.x.x.x

Add NAS

sudo nano /etc/auto_master
#
# Automounter master map
#
+auto_master		# Use directory service
/net			-hosts		-nobrowse,hidefromfinder,nosuid
/home			auto_home	-nobrowse,hidefromfinder
/Network/Servers	-fstab
/-			-static
/mnt/NAS		auto_nas

Add mount point

sudo nano /etc/auto_nas
Lightroom -fstype=afp afp://username:password@bilder.local/Lightroom

Start

wakeonlan 00:11:32:xx:xx:xx
sleep 30
read -p "Press Enter to continue" </dev/tty
sudo automount -vc
exec sleep 1

Stop

diskutil unmount /mnt/NAS//Lightroom
ssh admin@bilder.local 'sudo shutdown -h now'
exec sleep 1

This seems to happen for whatever reasons – the server file list is not  in sync with the local file list and cannot even be modified manually. This may be a particular problem when you are at 1&1 /ionos with a hosted package. Here is a solution

$path = realpath(dirname(__FILE__));
#exec("php $path/console.php upgrade 2>&1", $out, $result);
exec("php $path/console.php files:scan --all -v 2>&1", $out, $result);
echo "<pre>result: " .$result .PHP_EOL;
print_r($out);

There is a wonderful description at stats.stackexchange.com how science should be taught

Imagine a big family dinner, where everybody starts asking you about PCA. First you explain it to your great-grandmother; then to you grandmother; then to your mother; then to your spouse; finally, to your daughter (who is a mathematician). Each time the next person is less of a layman. Here is how the conversation might go…

This science not by some older science journalists or some younger science slammers but a real expert.

Wenn ich hier die Grafik ansehe, sieht es aus, als hätte ich im Februar 1995 einen der ersten 10.000 Webserver installiert.  Selbst 2000 konnte man das noch als Neuigkeit publizieren :-)

Just a few days before public deployment of my new website this error popped up in the terminal. Apache was running fine but my favorite php test server crashed after 5 minutes. Continue reading PHP Segmentation Error 11 →

Just found a plugin from Apple that allows Endnote citations in Pages. So Apple is also interested in the science industry :-)

Just in case you arrive here from Google by trying to reformat footnotes as endnotes. Your cursor needs to be on an existing footnote, only then the formatting menu appears top right.

After digging around in the console, I found some mixed content types – maybe the developers did not work on a https enabled site?
The only solution right now is the “Classic Editor” plugin.