Apache 2 config file to act as a reverse proxy for Visual Studio Code on the server

code-server.conf

<IfModule mod_ssl.c>
<VirtualHost *:443>
        ServerName code.somehost.ch

        ProxyRequests Off
        AllowEncodedSlashes NoDecode

        RewriteEngine On
        RewriteCond %{HTTP:Upgrade} =websocket [NC]
        RewriteRule /(.*)           ws://localhost:8443/$1 [P,L]
        RewriteCond %{HTTP:Upgrade} !=websocket [NC]
        RewriteRule /(.*)           http://localhost:8443/$1 [P,L]
        ProxyPassReverse            / http://localhost:8443/

        ServerSignature Off

        SSLCertificateFile /etc/letsencrypt/live/code.somehost.ch/fullchain.pem
        SSLCertificateKeyFile /etc/letsencrypt/live/code.somehost.ch/privkey.pem
        Include /etc/letsencrypt/options-ssl-apache.conf
</VirtualHost>
</IfModule>