A saved host that stopped advertising on mDNS but has a learned Wake-on-LAN
MAC was routed into a wake-and-WAIT-for-mDNS flow instead of being dialed. For
a host reached over a routed network (Tailscale/VPN/another subnet) mDNS never
sees it, so the wait could never succeed and reconnects were impossible — the
host log showed no connection attempt at all. The tile's Offline pip and this
connect gate shared the same LAN-only `advertises`/`liveAdvert` predicate, so a
perfectly reachable host read as unreachable. The first connect worked only
because the MAC hadn't been learned yet (a direct dial); once learned, every
reconnect wedged in the waker.
All four full clients carried this pattern (deliberate mirrors of the Apple
`HostWaker`). Each now DIALS FIRST: fire the magic packet up front
(fire-and-forget — harmless if the host is awake, and a genuinely-asleep box is
booting while the dial times out) and attempt the connection unconditionally.
Only a FAILED dial falls into the visible "Waking…" wait, whose redial carries
no fallback so it can't loop. A fingerprint-mismatch/trust-rejection failure
means the host ANSWERED, so it never takes the wake path.
- apple: SessionModel.connect gains `onUnreachable`; startSession dials first.
- linux (relm4): AppMsg::WakeConnect wakes+dials; a per-request wake_fallback
is armed and consumed in SessionExited, matched by fingerprint/address.
- windows: initiate_waking + ConnectOpts.wake_on_fail; the worker's Failed arm
escalates to wake_and_connect only on a non-trust failure.
- android: doConnectDirect gains onFailure; doConnect wakes+dials first.
Decky was already correct (always launches `--connect`; WoL fire-and-forget).
Explicit "Wake host" menu actions are unchanged — waiting on mDNS is right when
the user explicitly asked to wake a box.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
enricobuehler
ab6790ef6c