Floris Bruynooghe 4a310f799c feat(proto): Accept off-path probe packets (#608)
## Description

When sending probing packets we need to accept them and send
responses.

This currently does not try to track all 4-tuples the server should
know, we only need this to work when qnt is enabled for now so I'm
taking a shortcut and not storing that state (yet).

This also fixes updating the 4-tuple too early: it would be update
even when a packet could still be rejected. We now only update the
4-tuple once the packet is fully authenticated. It is made clear that
earlier discards are only an optimisation.

This now fully respects the various probing packet requirements of
RFC9000, Multipath and QNT in all it's confusing combinations.

Fixes #599.

## Breaking Changes

n/a

## Notes & open questions

n/a

## Change checklist

- [x] Self-review.
- [x] Documentation updates following the [style
guide](https://rust-lang.github.io/rfcs/1574-more-api-documentation-conventions.html#appendix-a-full-conventions-text),
if relevant.
- [x] Tests if relevant.

---------

Co-authored-by: Philipp Krüger <philipp.krueger1@gmail.com>
2026-04-23 11:32:57 +00:00
2026-02-06 10:04:56 +00:00
2026-04-22 15:14:49 +02:00
2025-03-24 15:57:34 +00:00
2026-04-15 14:46:10 +02:00
2026-03-09 14:40:18 +01:00
2020-01-27 10:21:10 -08:00
2026-03-09 14:45:33 +01:00
2025-02-23 11:52:46 +00:00

noq

Documentation Crates.io Chat License: MIT License: Apache 2.0

General purpose implementation of the QUIC transport protocol in pure Rust. Noq is built as an async-friendly API in the noq crate on top of a sans-io protocol library in noq-proto.

Noq started out as a fork of the excellent Quinn project. The main focus of development has been towards adding support for more QUIC (draft) extensions:

Features

  • Easy to use futures-based async API.
  • Client and server server functionality.
  • 0-RTT and 0.5-RTT data support.
  • Ordered and unordered stream reads.
  • Custom and zero-length connection identifiers.
  • Fully pluggable crypto API with a Rustls implementation using ring or aws-lc-rs provided by default for convenience.
  • Broad platform support, including Linux, Windows, macOS, android, iOS and wasm.

Standards

The noq library aims to be correct implementation of various QUIC standards:

Getting started

Examples at https://github.com/n0-computer/noq/blob/main/noq/examples

$ cargo run --example server ./
$ cargo run --example client https://localhost:4433/Cargo.toml

This launches an HTTP 0.9 server over the QUIC transport on the loopback address serving the current working directory, with the client fetching ./Cargo.toml. By default, the server generates a self-signed certificate and stores it to disk, where the client will automatically find and trust it.

License

Copyright 2025 The quinn developers Copyright 2025 N0, INC.

This project is licensed under either of

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this project by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

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noq, a QUIC implementation in Rust
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