halkyon/deploy/forwarded.caddy

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# Caddy's global options for an instance behind HAProxy (ADR 0039, D10, D11), which
# compose.forwarded.yaml mounts into /etc/caddy/global/ and the Caddyfile's global
# options import.
servers {
listener_wrappers {
# The visitor's address from HAProxy's PROXY header, trusted from ramiel's
# tunnel address alone (where Docker hands its connections on unchanged),
# so the servers' per-network limits count visitors, not ramiel.
proxy_protocol {
timeout 5s
allow 10.61.97.1/32
}
tls
}
# HTTP/3 runs over UDP, which HAProxy doesn't route: none, so no client is sent
# looking for it at ramiel, whose UDP 443 is its own Caddy's.
protocols h1 h2
}
# Certificates through the TLS-ALPN challenge alone, which reaches here through
# HAProxy unopened; port 80 isn't published, as ramiel answers it.
cert_issuer acme {
disable_http_challenge
}