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3e7afd7592
Adds application-level ping/pong between extension and relay server. Extension sends PING every 15s, server echoes PONG. Round-trip time displayed in Status tab (green/yellow/red color-coded). Server also forwards PING with target peerId and routes PONG back, enabling future peer-to-peer ping without server restart. Extension already responds to incoming peer PINGs. See CHANGELOG.md for details.
KoalaSync Shared Constants
This directory contains constants and protocol definitions used by both the extension and the server.
Syncing with the Extension
Important
Every time this directory is modified, you must run
node scripts/build-extension.jsto keep the extension's copy up to date.
Because Browser Extensions (Manifest V3) cannot load files outside their root directory, all files in this directory must be copied to extension/shared/ whenever they are modified. The build script handles this automatically.
Security & Versioning Constants
OFFICIAL_SERVER_TOKEN: A 32-byte hex token required to connect to the official relay server.APP_VERSION: The current version of the extension. Automatically injected from the git tag during CI release builds.OFFICIAL_SERVER_URL: The default endpoint for the official KoalaSync relay.
Protocol Events
For the complete and current event list, see the EVENTS object in constants.js. Key events include:
| Event | Direction | Purpose |
|---|---|---|
JOIN_ROOM |
Client → Server | Request to join a room with credentials |
LEAVE_ROOM |
Client → Server | Leave the current room |
ROOM_DATA |
Server → Client | Current room state (peers list) |
PLAY / PAUSE / SEEK |
Bidirectional relay | Media control commands |
PEER_STATUS |
Bidirectional relay | Heartbeat or join/leave notification |
FORCE_SYNC_PREPARE |
Bidirectional relay | Phase 1: Pause & seek to target time |
FORCE_SYNC_ACK |
Bidirectional relay | Phase 1 confirmation: peer is buffered |
FORCE_SYNC_EXECUTE |
Bidirectional relay | Phase 2: Resume playback simultaneously |
EVENT_ACK |
Server → Client | Delivery confirmation for UI feedback |
EPISODE_LOBBY |
Bidirectional relay | Episode transition: waiting for all peers |
EPISODE_READY |
Bidirectional relay | Episode confirmation: peer has loaded |
GET_ROOMS / ROOM_LIST |
Client ↔ Server | Room discovery |
ERROR |
Server → Client | Error message |