Caddy

Caddy is adopted as a proxy server because it automates HTTPS by default, removes most manual configuration, and provides a clean, human-friendly syntax. Its built-in certificate management, automatic renewals, and sensible defaults reduce operational overhead. The server includes modern features such as HTTP/3 support, flexible reverse-proxy capabilities, and robust security practices without requiring external modules. It runs as a single lightweight executable, supports hot-reloading of configuration, and integrates easily into containerized or cloud environments, making it suitable for both simple setups and production deployments.

Setup

Setting up the response header on Caddy is straightforward.

Here’s an example Caddy configuration using the header directive:

/etc/caddy/Caddyfile

your-site.com {
    root * /var/www/html
    file_server

    # Inject Zero Ad Network response header
    header X-Better-Web-Welcome "AZqxhITVcO6haboXD24Bzg^1^1"
}