* Added HTTPS redirect from www to base domain.

sites-available/example.com.conf

@@ -107,6 +107,28 @@ server {
 } # HTTP server
 
 
+## Return (no rewrite) server block.
+server {
+    ## This is to avoid the spurious if for sub-domain name
+    ## "rewriting".
+    listen 443; # IPv4
+    ## Replace the IPv6 address by your own address. The address below
+    ## was stolen from the wikipedia page on IPv6.
+    listen [fe80::202:b3ff:fe1e:8329]:443 ipv6only=on;
+    server_name www.example.com;
+
+    ## Keep alive timeout set to a greater value for SSL/TLS.
+    keepalive_timeout 75 75;
+
+    ## See the keepalive_timeout directive in nginx.conf.
+    ## Server certificate and key.
+    ssl_certificate /etc/ssl/certs/example-cert.pem;
+    ssl_certificate_key /etc/ssl/private/example.key;
+
+    return 301 $scheme://example.com$request_uri;
+
+} # server domain return.
+
 ## HTTPS server.
 server {
     listen 443 ssl;