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Changelog

All notable changes to InputSync are documented in this file.

Format follows Keep a Changelog. Versions follow Semantic Versioning.

[1.1.2] — 2026-03-08

Fixed

Startup panic: Unable to install global subscriber: SetLoggerError(())

  • The app crashed immediately on launch with a panic from tracing-subscriber.
  • Root cause: egui_logger::builder().init() and tracing_subscriber::fmt().init() both attempt to install the global log backend. Only one can win — the second call panics unconditionally (no .ok() guard).
  • Fix: removed tracing_subscriber::fmt().init() entirely. Enabled the log feature on the tracing crate so all tracing::info!() / warn!() etc. calls automatically bridge to the log crate, which egui_logger captures for display in the Logs tab. No separate subscriber is needed.
  • Removed tracing-subscriber dependency (was only used for the conflicting init).

[1.1.1] — 2026-03-08

Fixed

Linux — .deb install fails with file conflict against old input-sync package:

  • Installing inputsync_1.1.1_amd64.deb on a machine that previously had the old Tauri-based input-sync package would fail: dpkg refused to overwrite shared icon files (/usr/share/icons/hicolor/*/apps/inputsync.png) owned by input-sync.
  • Added Conflicts: input-sync and Replaces: input-sync to the package metadata. dpkg now automatically removes the old package when installing InputSync 1.1.1+.
  • The "Broken pipe / lzma write error" was a side-effect of dpkg aborting mid-extract on the conflict — resolved by the same fix.

Linux — "Illegal instruction (core dumped)" on non-AVX2 CPUs:

  • Binary was compiled with target-cpu=native (AVX2/AVX512 instructions) and cached dependency objects were reused even after changing the CPU target. Full cargo clean plus -C target-feature=-avx,-avx2,-avx512f ensures the binary runs on any x86_64 CPU, not just Haswell-era and newer.

[1.1.0] — 2026-03-08

Changed

Architecture — Full migration from Tauri/WebView2/React to pure Rust + egui:

  • Replaced the entire Tauri + React frontend with a native egui (eframe 0.31 + glow) UI — no browser engine, no WebView2, no Node.js required at build or runtime
  • Single portable native binary (~9 MB stripped) replaces the .deb/.exe installer package
  • Windows no longer requires WebView2 Runtime — completely self-contained executable

Added

  • Screen edge switching — moving the cursor to any configured screen edge automatically forwards control to the connected client
  • Dead corners — configurable corner regions that block edge triggers to prevent accidental switching
  • Dead zones — configurable rectangular screen regions that suppress edge activation
  • Optional TLS transport — self-signed TOFU certificate via rcgen + rustls + tokio-rustls; layered on top of the existing ChaCha20 session encryption
  • Settings persistence — all configuration saved to ~/.local/share/inputsync/config.json via serde_json
  • In-app log viewer — real-time log output in the Logs tab via egui_logger
  • Mini screen-map widget — clickable Painter-based widget in Settings for configuring edge targets
  • Tabs: Main | Settings | Logs

Fixed

  • Server restart after stop — Start Server now auto-stops any running server; no stale state
  • Stopped TCP listener now releases port immediately on shutdown

[1.0.2] — 2026-03-07

Fixed

Windows/Linux — Server restart (os error 98 "Address already in use"):

  • Stopping and restarting the server showed "Address already in use" error — the TCP accept loop held port 24800 open indefinitely because the shutdown signal was never delivered (the oneshot receiver was immediately dropped). Replaced the broken oneshot with a CancellationToken; the TCP loop now exits and drops the TcpListener the instant Stop Server is clicked, releasing the port immediately.
  • Start Server now auto-stops any previously running server instead of returning "Server already running" — clicking Start Server always works even if a prior session wasn't explicitly stopped.

Windows — WebView2 required even on stripped Windows (Windows Lite, etc.):

  • The app required WebView2 to be pre-installed or downloaded from the internet, breaking on lightweight/locked-down Windows installations. Switched NSIS installer to offlineInstaller mode — the full WebView2 runtime is now bundled inside the .exe installer (~150 MB total). No internet connection, no Microsoft services, and no manual WebView2 installation required.

[1.0.1] — 2026-03-07

Fixed

Windows:

  • Installer appeared frozen during WebView2 download — NSIS hook now detects whether WebView2 is present. If missing, shows a dialog before the download begins: "The installer is NOT frozen — please wait." If already installed (most Windows 10/11), skips silently.
  • App silently failed to open when WebView2 was missing or damaged — replaced the silent panic with a native Windows MessageBoxW error dialog with exact fix steps and a download link.

Linux (Wayland/Hyprland):

  • App showed no UI on Wayland compositors (Hyprland, etc.) — .desktop entry now launches with GDK_BACKEND=x11 WEBKIT_DISABLE_DMABUF_RENDERER=1 to force XWayland.
  • Tray icon caused a startup panic — icons regenerated as 8-bit RGBA (were 16-bit, causing ImageBufferSize mismatch in the tray icon loader).

[1.0.0] — 2025-03-07

Added

  • X25519 ECDH key exchange with HKDF-SHA256 session key derivation
  • ChaCha20-Poly1305 authenticated encryption on all input events
  • 6-character alphanumeric session code pairing system
  • TCP control channel (port 24800) for handshake and session management
  • UDP event channel (ports 24801/24802) for low-latency input forwarding
  • Cross-platform input capture via rdev (Linux X11, Windows)
  • Cross-platform input simulation via enigo (Linux X11, Windows)
  • Mouse, keyboard, and scroll wheel event forwarding
  • Relative mouse movement (resolution-independent across screens)
  • ScrollLock hotkey to toggle input forwarding without touching the UI
  • Bounded input event channel with backpressure (drops stale packets)
  • Counter-window UDP resync (up to 64 packets ahead on packet loss)
  • Dedicated OS thread for input simulation (enigo compatibility)
  • Pixel-art CRT terminal logo with blinking cursor SVG animation
  • Dark theme React UI: Server panel, Client connect panel, Status bar
  • Session code copy-to-clipboard button
  • Linux .deb package (Ubuntu/Debian)
  • Windows NSIS installer (.exe) via GitHub Actions CI
  • GitHub Actions workflow: builds Linux + Windows on every tagged release

Security

  • All keyboard and mouse events encrypted before leaving the network adapter
  • Nonces are XOR-combined from both server and client contributions
  • Forward-only counter window prevents replay of captured packets
  • Session codes are single-use per server start

[Unreleased]

Planned — v1.2

  • Clipboard sync across machines
  • Linux Wayland support (libei)
  • mDNS/Bonjour server auto-discovery
  • Configurable switch hotkey (not hardcoded ScrollLock)
  • Ping/pong latency measurement display
  • Code signing for Windows SmartScreen bypass
  • RPM and Arch (AUR) packages

Planned — v1.3

  • Multi-monitor layout configuration
  • macOS support
  • Multi-client support with named client slots