Configuring Nginx for HTTPS - Ubuntu 16.04 LTS

nginx.conf

#Start of server blocks

# HTTP - redirect all requests to HTTPS:
server {
        listen 80;
        #listen [::]:80 default_server ipv6only=on;
        server_name www.another.com another.com;
        return 301 https://$server_name$request_uri;
}

# HTTPS - proxy requests on to local Node.js app:
server {
        listen 443 http2;
        server_name another.com www.another.com;

        ssl on;
        # Use certificate and key provided by Let's Encrypt:
        ssl_certificate /etc/letsencrypt/live/www.another.com/fullchain.pem;
        ssl_certificate_key /etc/letsencrypt/live/www.another.com/privkey.pem;
        ssl_session_timeout 5m;
        ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
        ssl_prefer_server_ciphers on;
        ssl_ciphers 'EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH';

        # Pass requests for / to http://127.0.0.1:8190:
        location / {
                proxy_set_header X-Real-IP $remote_addr;
                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                proxy_set_header X-NginX-Proxy true;
                proxy_pass http://127.0.0.1:8190/;
                proxy_ssl_session_reuse off;
                proxy_set_header Host $http_host;
                proxy_cache_bypass $http_upgrade;
                proxy_redirect off;
        }
}