server {
    listen 443 ssl;
    client_max_body_size 4G;
    server_name REPLACE_fqdn_ECALPER;
    ssl_certificate /etc/letsencrypt/live/REPLACE_fqdn_ECALPER/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/REPLACE_fqdn_ECALPER/privkey.pem;

    location / {
      proxy_set_header Host $http_host;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_set_header X-Forwarded-Proto $scheme;
      proxy_set_header Upgrade $http_upgrade;
      proxy_set_header Connection $connection_upgrade;
      proxy_redirect off;
      proxy_buffering off;
      proxy_pass http://localhost:8000;
    }
}

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