- FORCE_SYNC_TIMEOUT in shared/constants.js was 5000 but all code uses
8500ms. Update constant to 8500 and reference it in background.js
instead of hardcoded values (4 occurrences)
- Add errorToken counter in popup showError() so stale 5s timeout
doesn't clear styling of a newer error that arrived in between
- Fix EVENT_ACK handler indentation in server/index.js to match
surrounding socket.on handlers
- Store real client IP from x-forwarded-for on socket for use in JOIN_ROOM
auth rate limiting (was using proxy IP, breaking brute-force protection)
- Remove clearEpisodeLobbyState() from socket.onclose to preserve lobby
across brief disconnects; ensureState() recovers lobby + timeout on reconnect
- Lobby is still properly cleared on intentional LEAVE_ROOM and room switch
Two parallel JOIN_ROOM to a non-existent room could race past each
other during bcrypt.hash, causing the second to overwrite the first
room (password hash lost). The lock was read but never written.
- Create lock promise before bcrypt.hash async boundary
- Release in finally to cover all exit paths (success, MAX_ROOMS, error)
- Concurrent waiters now correctly await existing room creation
Server Security (S-1 through S-8):
- S-1: Type-check and clamp peerId, protocolVersion, password
- S-2: Validate numeric/boolean/enum fields in relay peerData
- S-3: Construct explicit relay payload (stop spreading raw data)
- S-4: Type-check targetId and actionTimestamp in EVENT_ACK
- S-5: Restrict room IDs to [a-zA-Z0-9-] only
- S-7: Add eventCounts periodic cleanup alongside connectionCounts
- S-8: Guard version parsing against NaN bypass
Documentation (P-1, R-1 through R-6):
- P-1: Fix PRIVACY.md typo, document all in-memory data maps
- R-1/R-5: Fix stale sync-constants.bat references in shared/
- R-2: Fix stale lastTargetState ref in ARCHITECTURE.md
- R-3: Extension README title reflects cross-browser support
- R-6: Document content injection markers in scripts/README.md
Adds a new toggleable feature that detects episode transitions via
mediaTitle mutation (loadeddata/MutationObserver), pauses the video,
and waits for all room peers to load the same episode before
executing a coordinated Force Sync play at 0:00.
Protocol:
- Add EPISODE_LOBBY and EPISODE_READY events to shared/constants.js
- Add EPISODE_LOBBY_TIMEOUT (60s) constant
- Relay both new events in server/index.js
Content Script (content.js):
- Layered detection: loadeddata + MutationObserver src-change + heartbeat
- Debounced onEpisodeTransition() sends signal ONLY; no eager pause
- PAUSE_FOR_LOBBY handler pauses only after background confirms feature enabled
- startLobbyPoll() polls title match without premature pause for non-initiators
- checkAndReportLobbyReady() pauses and sends EPISODE_READY_LOCAL on match
- CONTENT_BOOT recovery for re-injection after hard navigation
Background (background.js):
- Episode lobby state persisted in chrome.storage.session with recovery
- EPISODE_CHANGED: checks setting, creates lobby, sends PAUSE_FOR_LOBBY to tab
- EPISODE_LOBBY/READY server event handlers with dedup logic
- 60s timeout cancels lobby (Option B) with Chrome failure notification
- Peer departure handled: removes from readyPeers, re-checks completion
- executeEpisodeLobby() reuses existing Force Sync pipeline at targetTime 0.0
- Lobby cleared on LEAVE_ROOM; status exposed in GET_STATUS
Popup:
- Auto-Sync Next Episode toggle in Settings tab (default: off, opt-in)
- Episode Lobby status card in Sync tab with peer readiness display
- LOBBY_UPDATE message handler for real-time UI updates
Bumps APP_VERSION and manifest to 1.2.0
Koala