Sōzu 2.1.0 is available with HTTP/2 support
Sōzu 2.1.0 is available. It consolidates every improvement shipped since the 2.0.0 milestone: a rewritten HTTP/2 frontend stack supporting the full HTTP/1 and HTTP/2 protocol matrix, a sozu top TUI for live monitoring, pluggable cryptographic providers, per-IP rate limiting, frontend routing features such as HSTS, redirects and URL rewrites, control-plane audit logging and a comprehensive metrics rewrite. It also hardens the proxy against HTTP/2 attacks such as Rapid Reset, CONTINUATION flood and MadeYouReset.
Sōzu 2.1.0 introduces first-class UDP load balancing as an opt-in listener type, with HRW and Maglev source-hash algorithms, flow affinity, PROXY protocol v2 to backends, active health checks and dedicated metrics. Patch releases since 2.0.0 added a wall-clock start_time field in access logs for OpenTelemetry span reconstruction and further HTTP/2 flow-control protections. This release also fixes a hot-reconfiguration bug that silently deactivated listeners, and adds about 1,100 debug assertions across the codebase for stronger correctness validation.
This new version currently serves cleverapps.io domains as a testing phase, before a wider rollout to custom domains.