{$REFBOARD_DOMAIN} {
    encode zstd gzip

    # Raise upload cap to match RefBoard's MAX_FILE_SIZE_MB. Caddy's default
    # is 10MB; the value below permits up to 250MB request bodies.
    request_body {
        max_size 250MB
    }

    reverse_proxy refboard:8000 {
        # WebSocket upgrade is automatic in Caddy 2; nothing extra needed.
        flush_interval -1
    }
}