server {
    listen 443 ssl http2;
    server_name webmention.example.com;

    # Keep the existing certificate directives from your server configuration.

    location / {
        proxy_pass http://127.0.0.1:8080;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
}