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enricobuehlerandClaude Opus 4.8 bc5f6a3881 fix(apple/session): keep the display awake for the length of a session
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A stream is not user activity to the OS, and controller input does not feed
the HID idle timer on any Apple platform — so a gamepad-only session reliably
idles the panel out from under the user mid-play. A keyboard/mouse capture
session masks the bug because those events are real local HID. The Android
client has held FLAG_KEEP_SCREEN_ON while streaming all along; the Apple
clients held nothing.

DisplaySleepGuard is acquired in beginStreaming and released at the top of
disconnect, so it is scoped to the session — every teardown path (user quit,
sessionEnded, the backgrounded keep-alive timeout) funnels through disconnect.

  iOS/iPadOS/tvOS: UIApplication.isIdleTimerDisabled. App-wide and ignored
  while backgrounded, which is what the audio-only keep-alive wants.

  macOS: ProcessInfo.beginActivity(.userInitiated, .idleDisplaySleepDisabled),
  the Foundation wrapper over IOKit power assertions. That defers display
  sleep but NOT the screen saver, which runs off the HID idle timer
  independently — so a 30 s IOPMAssertionDeclareUserActivity heartbeat runs
  alongside it. Intended side effect: an idle-lock that follows the screen
  saver is deferred for the session too.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-24 00:00:55 +02:00