Combine r-handler and tls - r

Question

Is it possible to provide the Apache R-mod via TLS directly? Without the need to set up a reverse proxy?
I'm trying to set up an OpenCPU instance without the typical reverse proxy configuration. It should be accessible via HTTPS and HTTPS only.
Whenever I try to enable the TLS/SSL engine, Apache ignores that and on port 443 I'll get a header missmatch as HTTP is delivered over port 443.
<IfModule mod_ssl.c>
SSLStaplingCache "shmcb:${APACHE_LOG_DIR}/stapling-cache(150000)"
<IfModule mod_R.c>
RSourceOnStartup "/usr/lib/opencpu/rapache/onstartup.R"
<Location /ocpu>
SSLEngine on
SSLUseStapling on
SSLCertificateFile /etc/ssl/xxx.pem
SSLCertificateKeyFile /etc/ssl/private/xxx.key
SSLCertificateChainFile /etc/ssl/certs/chain.pem
SetHandler r-handler
RHandler opencpu:::rapachehandler
SetOutputFilter DEFLATE
SetInputFilter DEFLATE
</Location>
Alias /favicon.ico /usr/lib/opencpu/rapache/favicon.ico
Alias /robots.txt /usr/lib/opencpu/rapache/robots.txt
# Increase prefork defaults
<IfVersion >= 2.4>
#StartServers 10
MaxConnectionsPerChild 200
<Directory /usr/lib/opencpu/rapache>
Require all granted
</Directory>
</IfVersion>
</IfModule>

Answer 1

It seems that the Location /ocpu is valid for both VirtualHosts, the one for HTTP and HTTPS.
So it suffices to redirect HTTP to HTTPS in 000-default.conf and to correctly set up TLS in the default-ssl.conf.
<VirtualHost *:80>
ServerName xxx
ServerAdmin xxx
ErrorLog ${APACHE_LOG_DIR}/error.log
CustomLog ${APACHE_LOG_DIR}/access.log combined
Redirect / https://xxx/
</VirtualHost>
And
# cat default-ssl.conf
<IfModule mod_ssl.c>
SSLStaplingCache "shmcb:${APACHE_LOG_DIR}/stapling-cache(150000)"
LogLevel Debug
<VirtualHost *:443>
ServerName xxx
ServerAdmin xxx
ErrorLog ${APACHE_LOG_DIR}/error.log
CustomLog ${APACHE_LOG_DIR}/access.log combined
SSLEngine on
SSLUseStapling on
SSLCertificateFile /etc/ssl/certs/xxx.pem
SSLCertificateKeyFile /etc/ssl/private/xxx.key
SSLCertificateChainFile /etc/ssl/certs/xxx.pem
DocumentRoot /var/www/html
</VirtualHost>
</IfModule>
No need to change anything in the opencpu.conf.