Commit Graph
2 Commits
Author SHA1 Message Date
mrambossekandClaude Fable 5 3cdbccee18 cli: serving is an explicit verb; no arguments prints usage
server-release / image (push) Successful in 15s
server-test / test (push) Successful in 33s
server-release / release (push) Successful in 34s
Running an unfamiliar binary by name should tell you what it does, not bind a
dozen ports and start answering the internet. --serve (or --daemon) now does
that, and a bare invocation prints usage and exits 2 - non-zero on purpose, so a
service manager sees a failure rather than concluding the server ran and
finished cleanly.

The hazard this creates is worth spelling out, because it bites once and
silently: three places started the binary with no arguments - the systemd unit,
the unit template, and the Dockerfile - and --self-update replaces the binary
but never the unit. A routine update would therefore leave a service that cannot
start, discovered whenever the host next rebooted.

So the updater repairs it: after replacing the binary it appends --serve to an
ExecStart that has no flags, but only in a unit this program wrote (identified
by its description). Editing an operator's hand-written unit would be overreach;
leaving ours broken would be negligence.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-08-01 17:42:20 +02:00
mrambossekandClaude Opus 5 8a80026d49 server: Go skeleton — control plane, UDP data plane, Docker + systemd modes
Pure stdlib. Implements the spec's core: enrollment (single-use tokens),
profile (SPKI pin, only real capabilities advertised), sessions with the
§2.4 HKDF-SHA256 key schedule; UDP data plane with the 32-byte ELT1
header, 4-byte HMAC gate, 1024-wide anti-replay window, ECHO_RESP with
observation block, TIMESYNC, and the §3.4 anti-amplification cap. Wire
format has tests (roundtrip + silent-drop cases); enroll→profile→session
smoke-tested live.

Modes: container (autodetect /.dockerenv|/run/.containerenv|cgroup, or
--docker/ECHOLOT_DOCKER=1; config via ECHOLOT_* env; distroless image;
network_mode host required — Docker NAT would falsify observed sources)
and native (--install-systemd/--uninstall-systemd with a hardened unit,
opt-in --self-update from Gitea releases; refused in containers).

CI: tests on any server/ push; server-v* tags build+push the image to the
Gitea registry and attach linux amd64/arm64 binaries + SHA256SUMS to a
release — the artifact self-update consumes.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-07-30 13:09:08 +02:00