RFC 9368 · PROPOSED STANDARD · 2023

Compatible Version Negotiation for QUIC

Overview

RFC 9368, “Compatible Version Negotiation for QUIC”, is a Proposed Standard document published in May 2023 by D. Schinazi, E. Rescorla. It updates RFC 8999. The canonical text is published by the RFC Editor.

Abstract

QUIC does not provide a complete version negotiation mechanism but instead only provides a way for the server to indicate that the version the client chose is unacceptable. This document describes a version negotiation mechanism that allows a client and server to select a mutually supported version. Optionally, if the client's chosen version and the negotiated version share a compatible first flight format, the negotiation can take place without incurring an extra round trip. This document updates RFC 8999.

Abstract as published in the RFC, via rfc-editor.org.

What “Proposed Standard” means

An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.

Read this RFC

The canonical text of RFC 9368 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.

Relationships to other RFCs
This RFC updates
RFC 8999
Other RFCs from 2023

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