swaits
90a306853d
UART boards (CP2102 bridge) keep the serial port alive across ESP32 resets, so the mux never detected the board rebooting. Now the writer sends a keepalive Ping every 5s of idle and declares the dongle lost after a 2s timeout. On reconnect, saved radio config and RX state are re-sent to the dongle so connected clients continue working without re-establishing state.
70 lines
2.4 KiB
Markdown
70 lines
2.4 KiB
Markdown
# Changelog
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## Unreleased
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### Added
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- Keepalive ping: detects unresponsive dongles (e.g. UART boards behind a
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CP2102 bridge where the serial port stays open across ESP32 resets). Pings
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every 5 seconds of idle, declares dongle lost after 2-second timeout.
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- Radio state restoration after reconnect: saved SetConfig and StartRx are
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re-sent to the dongle so clients don't need to know a reset happened.
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## 0.2.2 — 2026-04-08
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### Fixed
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- Bumped MSRV from 1.85 to 1.93 to satisfy `ucobs` dependency requirement.
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`cargo install donglora-mux` now works on toolchains >= 1.93.
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## 0.2.1 — 2026-04-07
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### Fixed
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- **Exclusive serial port lock.** The mux now acquires an `flock`-based
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exclusive lock on the serial port before opening it. This prevents other
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processes (bridges, other mux instances) from directly opening the same
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device while the mux owns it. The lock is held for the duration of the
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dongle session and auto-released on disconnect or crash.
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## 0.2.0 — 2026-04-07
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### Changed
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- Upgraded to `donglora-client` 0.2 (published crate, no more monorepo path dep).
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- Wire-level protocol constants now imported from `donglora_client::protocol::*`.
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### Fixed
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- Repository URL now points to `github.com/donglora/mux-rs`.
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- README links updated (removed stale monorepo paths).
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- Added `rust-version`, `homepage`, and `exclude` to Cargo.toml.
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## 0.1.1 — 2026-04-06
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### Fixed
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- Prevent multiple mux instances from running simultaneously via file-based
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exclusive lock (`fd-lock`); stale sockets from crashed instances are cleaned
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up automatically
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- Clearer error message when TCP port is already in use
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## 0.1.0 — 2026-04-06
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Initial release.
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### Features
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- USB multiplexer daemon: share one DongLoRa dongle with multiple applications
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- Unix domain socket and optional TCP listeners (same COBS-framed protocol)
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- RxPacket broadcast to all connected clients
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- Reference-counted StartRx/StopRx across clients
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- Config locking: first client sets radio config, others must match or fail
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- Auto-reconnect on USB hot-plug with ping verification
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- Bounded per-client send queues (256 frames) with backpressure isolation
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- Smart interception: redundant commands get synthetic responses without
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hitting the dongle
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- Graceful shutdown on SIGINT/SIGTERM with socket cleanup
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- TCP_NODELAY on accepted connections for low-latency frame delivery
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- CLI: `--port`, `--socket`, `--tcp`, `--verbose` options
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