game-kit/template/deploy/Caddyfile.tmpl

__HOST__

root * /opt/__SLUG__/build
encode gzip zstd

header {
	Strict-Transport-Security "max-age=31536000"
	X-Content-Type-Options "nosniff"
	X-Frame-Options "DENY"
	Referrer-Policy "no-referrer"
}

log {
	output file /var/lib/caddy/access.log {
		roll_size 10MiB
		roll_keep 30
	}
}

# The game server answers the API and the websocket; a deploy restarts it for
# a few seconds, and the proxy holds requests that land in that gap.
@game path /api/* /ws
handle @game {
	reverse_proxy localhost:__PORT__ {
		lb_try_duration 30s
		lb_try_interval 250ms
	}
}

# Everything else is the static site. SvelteKit writes each route as
# <route>.html, so /rules is tried as /rules.html before falling back to the
# app shell, which serves the rooms. Hashed assets under _app/immutable are
# cached for a year; every other response is revalidated so a deploy shows
# up on the next load. The two header matchers are disjoint.
handle {
	@immutable path /_app/immutable/*
	header @immutable Cache-Control "public, max-age=31536000, immutable"
	@mutable not path /_app/immutable/*
	header @mutable Cache-Control "no-cache"
	try_files {path} {path}.html /index.html
	file_server
}