Spitfire 0.26.0 release notes
Released: 2026-10-10
- HTTP/3 (QUIC): pick it as the HTTP version in the test options; HTTP and GraphQL steps go over QUIC (for CDNs and servers with HTTP/3 on). Timings are the same; the QUIC handshake shows as both connecting and TLS time. No fallback to HTTP/2.
- MQTT 5: with version 5 on an MQTT connection, publishes and requests get user properties, content type and message expiry; an incoming message's user properties reach checks and extractors as headers. Request/reply matches by correlation data: only the request's own reply is accepted, late replies to earlier requests are not. 3.1.1 stays the default.
Updating
Your installation tells you about a new release itself: admins see its notes and the update command for that installation at the top of the UI. The command backs up the database first and keeps the settings (Updating). You can also follow new releases with the RSS feed.