Hey r/rust! I've been working on Tunn, a tunneling tool that exposes your localhost to the internet. Think ngrok, but built in Rust on top of QUIC.
Why I built it:
I was using ngrok for webhook testing and got frustrated with the latency and session time limits. TCP-based tunneling felt like it could be better, so I decided to try QUIC (using quinn).
Results:
Benchmarked against ngrok with 500 requests (keep-alive, 10 concurrent):
- Tunn: 135ms avg, 65.9 req/s
- ngrok: 663ms avg, 15.0 req/s
QUIC multiplexing makes a big difference — one connection handles all requests, no per-request TLS handshakes.
Features:
- HTTP, TCP, and UDP tunneling
- Built-in web request inspector (localhost:4040)
- QR code in terminal for quick mobile access
- 0-RTT reconnect on network changes
- Single binary, no dependencies
Tech stack:
- quinn for QUIC transport
- axum for the inspector web server
- clap for CLI
- tokio for async runtime
- rustls (no native-tls, for easy cross-compilation)
GitHub: https://github.com/Diyarbekoralbaev/tunn
Install:
curl -s https://tunn.uz/install | bash
tunn http 3000
Would love feedback on the architecture and any rough edges you find. The QUIC implementation was the most interesting part to build — happy to discuss the details.
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