server {
    listen 80;
    listen [::]:80;

    server_name {{ project_domain }};

    # redirect all HTTP requests to HTTPS with a 301 Moved Permanently response.
    return 301 https://;
}

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;

    server_name {{ project_domain }};

    server_tokens off;
    charset utf-8;
    client_max_body_size {{ max_upload_size }};

    # certs sent to the client in SERVER HELLO are concatenated in ssl_certificate
    ssl_certificate /etc/letsencrypt/live/{{ project_domain }}/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/{{ project_domain }}/privkey.pem;
    ssl_session_timeout 1d;
    ssl_session_cache shared:MozSSL:10m;  # about 40000 sessions
    ssl_session_tickets off;

    ssl_dhparam /etc/nginx/dhparam.pem;

    # intermediate configuration
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;
    ssl_prefer_server_ciphers off;

    # HSTS (ngx_http_headers_module is required) (63072000 seconds)
    add_header Strict-Transport-Security "max-age=63072000" always;

    # TODO:
    # OCSP stapling
    # ssl_stapling on;
    # ssl_stapling_verify on;
    # verify chain of trust of OCSP response using Root CA and Intermediate certs
    # ssl_trusted_certificate /path/to/root_CA_cert_plus_intermediates;

    # replace with the IP address of your resolver
    location / {
        proxy_pass http://{{ upstream_ip }}:{{ port }};
        proxy_redirect off;

	    proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

    }
}