Skip to main content
FOSDEM PWA

Building QUIC Multipath

H.1302 (Depage) | Day 1 | 10:55 - 11:15 | Speakers: Floris Bruynooghe

Building QUIC Multipath
A picture of a devroom at FOSDEM 2024
Open in browser
Get involved in the conversation!Join the chat

Notes

Abstract

iroh is a library to establish peer-to-peer QUIC connections assisted by relay servers. It needs to route UDP datagrams carrying QUIC payloads over relayed and holepunched network paths. While this used to be done outside of QUIC's knowledge, over the past year we have worked to adopt the QUIC multipath proposed standard so that QUIC itself is aware of multiple paths.

This talk will cover iroh's experience of adding QUIC multipath to the Quinn library and the challenges of adopting it. The multipath draft does only cover how to send packets over the wire, and does not specify how path selection works, consequently we'll also cover iroh's choices for path selection as well as changes we will still be experimenting with.

Finally iroh has also moved holepunching into a QUIC extension, which integrates tightly with multipath. The mechanism of how holepunching with multipath support works in iroh will covered as well.

Attachments

Speakers

Floris Bruynooghe

Floris is a software engineer at number0 where he builds networking protocols in Rust to support user agency. In previous lives he's been an SRE and Python developer.

When not creating software Floris can be found in the mountains, climbing, ski touring or paragliding.

https://mastodon.social/@flub

Notice: The placeholder video image is licensed under CC BY-SA 4.0. The original image can be found hereChanges made to the image are: Cropped the image to a new ratio, part of the image was cut off.