LOLcord 🐱🎧

Lightweight voice + text chat for gaming. Built in Rust.

Features

• Voice chat — Opus codec, SFU-style relay (no mixing), jitter buffer
• Text chat — real-time messaging alongside voice
• Push to Talk / Open Mic — configurable PTT keybinds (keyboard + mouse buttons), VAD with sensitivity control
• Per-user volume — 0-200% per person
• Noise suppression — RNNoise-based, toggleable
• Noise gate — adjustable threshold
• E2E encryption — XChaCha20-Poly1305, password-derived keys (Argon2id)
• System tray — minimize to tray, mute/deafen from tray menu
• Auto-reconnect — exponential backoff on disconnect
• Connection quality — live ping (ms) and packet loss (%) display
• Settings persistence — saved to %APPDATA%/.lolcord/

Architecture

workspace/
├── shared/   # Protocol definitions (TCP messages, wire format)
├── server/   # SFU relay server (TCP signaling + UDP voice)
└── client/   # egui desktop client (Windows)

• Server: Pure relay — receives UDP voice packets, forwards to room peers. No mixing, no transcoding.
• Client: egui GUI, cpal audio, Opus encode/decode, tokio networking.

Building

Server (macOS/Linux)

cargo build -p server --release

Client (Windows, cross-compiled from macOS)

rustup target add x86_64-pc-windows-gnu
cargo build -p client --target x86_64-pc-windows-gnu --release

Running

Server

# Default: TCP 7480, UDP 7481
./target/release/server

# With config file
./target/release/server --config server.toml

Client

Run LOLcord.exe on Windows. Enter server address, username, and room name.

Config

Server supports TOML config and environment variable overrides. See server.toml.example for options.

License

MIT