Google Cast closes a control connection that goes roughly 10 seconds without a heartbeat PING. QBZ pinged every 25 seconds, so any cast connection left idle between connect and load — for example while the track downloads, or across a delayed second play attempt — was dropped by the receiver. The next LOAD then failed with EPIPE (broken pipe): the device chimed on connect but never played audio, and the heartbeat thread logged repeating broken-pipe warnings.
Pinging every 5s is the cadence the Cast protocol expects and keeps the connection alive through those idle gaps.
Fixes#439.
cc
AirPlay was scaffolded in both crates/qbz-cast/src/airplay and
src-tauri/src/cast/airplay but never worked at runtime: the RAOP
sender required an Apple MFi-licensed stack with no free/open
alternative, and the backend state was already disabled via the
commented `.manage(airplay_state)` line in src-tauri/src/lib.rs.
The CastPicker UI already hid the AirPlay tab pending streaming
support that was never going to ship.
Delete:
- crates/qbz-cast/src/airplay/ (entire directory)
- src-tauri/src/cast/airplay/ (entire directory)
- 10x v2_airplay_* commands from commands_v2/library.rs + their
tauri::generate_handler entries
- AirPlayError from qbz-cast errors
- 'airplay' from CastProtocol + every case arm in castStore.ts,
CastPicker.svelte, AudioOutputBadges.svelte
- Corresponding i18n keys if present
Zero behavior change for Chromecast / DLNA / QConnect / MPRIS. If
AirPlay ever becomes feasible we'll revisit from scratch with a
real streaming backend.
cc
- Upgrade rust_cast 0.18.1 → 0.21 (switches from openssl to rustls,
removing the openssl-sys dependency that blocked x86_64 cross-compile)
- Split mupdf sys-lib features to Linux-only (on macOS there are no GTK
symbol conflicts, and system libs don't support x86_64 cross-compile
from Apple Silicon)
- Update release-macos workflow to build both aarch64 and x86_64 DMGs
using a matrix strategy
Extract casting functionality (Chromecast, AirPlay, DLNA) to standalone
qbz-cast crate. This crate is Tauri-agnostic and can be used by TUI/CLI
clients.
- Move device connection, discovery, threading, and media server to crate
- Keep only Tauri commands in src-tauri/src/cast/
- Thin re-exports in src-tauri for backwards compatibility
- Remove duplicate dependencies from src-tauri Cargo.toml
vicrodh