Enable HTTP/2 server wide (#349)

lib.sh

@@ -57,6 +57,7 @@ PHPMYADMIN_CONF="/etc/apache2/conf-available/phpmyadmin.conf"
 SECURE="$SCRIPTS/setup_secure_permissions_nextcloud.sh"
 SSL_CONF="/etc/apache2/sites-available/nextcloud_ssl_domain_self_signed.conf"
 HTTP_CONF="/etc/apache2/sites-available/nextcloud_http_domain_self_signed.conf"
+HTTP2_CONF="/etc/apache2/mods-available/http2.conf"
 # Nextcloud version
 [ ! -z "$NC_UPDATE" ] && CURRENTVERSION=$(sudo -u www-data php $NCPATH/occ status | grep "versionstring" | awk '{print $3}')
 NCVERSION=$(curl -s -m 900 $NCREPO/ | sed --silent 's/.*href="nextcloud-\([^"]\+\).zip.asc".*/\1/p' | sort --version-sort | tail -1)

nextcloud_install_production.sh

@@ -415,6 +415,32 @@ fi
 a2ensite nextcloud_ssl_domain_self_signed.conf
 a2ensite nextcloud_http_domain_self_signed.conf
 a2dissite default-ssl
+
+# Enable HTTP/2 server wide, if user decides to
+echo "Your official package repository does not provide an Apache2 package with HTTP/2 module included."
+echo "If you like to enable HTTP/2 nevertheless, we can upgrade your Apache2 from Ondrejs PPA:"
+echo "https://launchpad.net/~ondrej/+archive/ubuntu/apache2"
+echo "Enabling HTTP/2 can bring a performance advantage, but may also have some compatibility issues."
+echo "E.g. the Nextcloud Spreed video calls app does not yet work with HTTP/2 enabled."
+if [[ "yes" == $(ask_yes_or_no "Do you want to enable HTTP/2 system wide?") ]]
+then
+    # Adding PPA
+    add-apt-repository ppa:ondrej/apache2 -y
+    apt update -q4 & spinner_loading
+    apt upgrade apache2 -y
+    
+    # Enable HTTP/2 module & protocol
+    cat << HTTP2_ENABLE > "$HTTP2_CONF"
+<IfModule http2_module>
+    Protocols h2 h2c http/1.1
+    H2Direct on
+</IfModule>
+HTTP2_ENABLE
+    echo "$HTTP2_CONF was successfully created"
+    a2enmod http2
+fi
+
+# Restart Apache2 to enable new config
 service apache2 restart
 
 whiptail --title "Which apps/programs do you want to install?" --checklist --separate-output "" 10 40 3 \