Apple TV (and any suspended process) wakes with dead keep-alive sockets in
the HTTP pool. The first request after resume — the health probe — failed
with a connection error, and the failover cascade treated that as a dead
endpoint: it validated the remote candidate, switched to it, and persisted
it as preferred. Nothing walked the session back to the local endpoint,
because the only re-optimization trigger is a connectivity event and a
same-interface sleep/wake never produces one. Only killing the app fixed it.
FailoverHttpClient now runs the existing candidate trust gate against the
current endpoint on a connection error and retries in place when it answers;
timeouts and 5xx still cascade directly. MultiServerManager gains
reoptimizeDemotedServers, called from the resume probe, which re-races any
online Plex server sitting on a remote or relay endpoint while a local one
is published.
close#2056
Tapping Instant Mix on Plex often did nothing: the /playQueues POST used no
endpoint failover, createPlayQueue swallowed every error into null,
fetchInstantMix mapped that to an empty list, playInstantMix returned
silently on empty tracks, and the errors stream's only listener is the
now-playing screen, which is not mounted at tap time (#2141).
The play-queue POST now rides the shared endpoint failover (replaying it is
safe: an orphaned duplicate queue on the server is inert), createPlayQueue
and fetchInstantMix propagate typed errors, playInstantMix reports
started/empty/superseded and throws fetch failures, and the tap site shows
a translated snackbar for a failed or empty mix. A failed collection or
playlist queue launch now also reaches the real failure snackbar instead of
the misleading "no items" path.
edde746