nginx.config

# redirect all http requests to https
# and also listen on IPv6 addresses
server {
  listen 80;
  listen [::]:80;
  server_name staging.healthlocker.uk;

  return 301 https://$server_name$request_uri;

  # let's encrypt *temporary*:
  location ~ /.well-known {
    root /var/www/html;
    allow all;
  }
}

#
map $http_upgrade $connection_upgrade {
  default upgrade;
  '' close;
}

# the main server directive for ssl connections
# where we also use http2 (see asset delivery)
server {
  listen 443 ssl http2 default_server;
  listen [::]:443 ssl http2 default_server;
  server_name staging.healthlocker.uk;

  ssl on;

  # CORS
  add_header Access-Control-Allow-Origin *;

  # paths to certificate and key provided by Let's Encrypt
  ssl_certificate /etc/letsencrypt/live/staging.healthlocker.uk/fullchain.pem;
  ssl_certificate_key /etc/letsencrypt/archive/staging.healthlocker.uk/privkey1.pem;

  # SSL settings that currently offer good results in the SSL check
  # and have a reasonable backwards-compatibility, taken from
  # - https://cipherli.st/
  # - https://raymii.org/s/tutorials/Strong_SSL_Security_On_nginx.html
  ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
  ssl_prefer_server_ciphers on;
  ssl_ciphers "EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH";
  ssl_ecdh_curve secp384r1;
  ssl_session_cache shared:SSL:10m;
  ssl_session_tickets off;
  ssl_stapling on;
  ssl_stapling_verify on;
  # ssl_dhparam /etc/ssl/certs/dhparam.pem;

  # security enhancements
  add_header Strict-Transport-Security "max-age=63072000; includeSubdomains";
  add_header X-Frame-Options DENY;
  add_header X-Content-Type-Options nosniff;

  # Let's Encrypt keeps its files here
  location ~ /.well-known {
    root /var/www/html;
    allow all;
  }

  # besides referencing the extracted upstream this stays the same
  location / {
    include proxy_params;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $host;
    proxy_redirect off;
    proxy_intercept_errors on;

    # WebSocket support
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    # proxy_set_header Upgrade websocket;
    proxy_set_header Connection $connection_upgrade;
    proxy_read_timeout 86400;
    proxy_set_header Origin ''; # avoid 403 error see: https://git.io/v7frj
    proxy_pass http://localhost:4000;
  }
}