RustVNC
Production-ready Rust libraries for VNC protocol implementation
Build VNC servers, clients, proxies, and recording tools with memory safety, modern async I/O, and full RFC 6143 compliance.
cargo add rustvncserver
Why RustVNC?
Memory Safe
Zero buffer overflows, use-after-free bugs, or data races. Rust's ownership system prevents entire classes of vulnerabilities that plague C/C++ VNC implementations.
High Performance
Zero-copy framebuffer updates, SIMD-optimized encoding, and persistent compression streams. Built on Tokio for efficient async I/O.
RFC 6143 Compliant
Full protocol implementation with 11 encoding types. Works with all VNC clients: TightVNC, RealVNC, TigerVNC, noVNC, and more.
Modular Design
Use what you need. From low-level encoding algorithms to complete server implementations. Build servers, clients, proxies, or recorders.
Core Libraries
rustvncserver
Complete VNC server library with async I/O, authentication, and all standard encodings.
use rustvncserver::VncServer;
#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
let server = VncServer::new(1920, 1080);
server.set_password(Some("secret".into()));
server.listen(5900).await?;
Ok(())
}
Example Implementation
RustVNC for Android
A production Android app demonstrating rustvncserver in action. Full-featured VNC server with screen sharing, remote input, reverse connections, and automation APIs.
- Screen sharing with configurable scaling
- Reverse VNC and UltraVNC repeater support
- Built-in noVNC web client
- Intent-based automation API
Encoding Performance
Compression ratios for 1920×1080 framebuffer updates
| Encoding | Compression | Best For |
|---|---|---|
| Raw | 1:1 (~8.3 MB) | LAN, unlimited bandwidth |
| CopyRect | ∞:1 (8 bytes) | Scrolling, window dragging |
| Tight JPEG | 16-83:1 | General purpose |
| ZRLE | 5-20:1 | Text, diagrams |
| ZYWRLE | 10-55:1 | Low bandwidth, lossy |
| TightPng | 8-40:1 | Lossless compression |
Ready to build?
Add rustvncserver to your project and start building.
cargo add rustvncserver