v2.9.0-beta.2

We're pleased to start the early previews of Caddy 2.9! While in beta, new features and changes may be unstable, so please test in suitable environments that may expose issues so we can fix them before the stable release.

While there are some features in this release (such as socket-activation-listeners), we've focused mainly on refinements and bug fixes in many areas, including:

• Config loading
• Events
• Logging
• Placeholders
• Reverse proxy and HTTP server performance
• Matchers
• HTTP (esp. HTTP/3)
• Metrics (per-host metrics)

We hope you will enjoy the 2.9 beta releases. Please try them out and report bugs! There is still more to come before the stable 2.9.0 release!

Thanks to all contributors, bug reporters, and helpers.

(Our first beta release is called beta 2 because beta 1 had a CI malfunction, and the Go module proxy won't let us reuse tags for security reasons.)

What's Changed

• Make it possible to configure the DisableStorageCheck setting for certmagic by @ankon in #6368
• caddyhttp: Add test case to corpus by @mholt in #6374
• cmd: remove zealous check of Caddyfile auto-detection by @mohammed90 in #6370
• ci: upgrade to goreleaser v2 by @mohammed90 in #6376
• logging: Allow setting log file permissions by @ririsoft in #6314
• Split run into a public BuildContext and a private part by @ankon in #6378
• Write the header if none had been written in WriteResponse by @ankon in #6380
• fix file mode configuration parsing by @ririsoft in #6383
• go.mod: update tscert package by @willnorris in #6384
• logging: Customizable zapcore.Core by @kkroo in #6381
• logging: set file mode when the file already exist. by @ririsoft in #6391
• caddyfile: Pass blocks to import for snippets by @elee1766 in #6130
• reverseproxy: add Max-Age option to sticky cookie by @JasonYuan869 in #6398
• fileserver: Remove newline characters from precomputed etags by @armadi1809 in #6394
• fix: http.intercept.header.* placeholders by @dunglas in #6429
• reverseproxy: Only log host is up status on change by @klaxa in #6419
• fix: don't compress already compressed fonts by @dunglas in #6432
• caddyhttp: Reject 0-RTT early data in IP matchers and set Early-Data header when proxying by @mholt in #6427
• reverseproxy: Add placeholder for host in active health check headers by @francislavoie in #6440
• browse: add Content-Security-Policy w/ nonce by @steffenbusch in #6425
• browse: fix Content-Security-Policy warnings in Firefox by @steffenbusch in #6443
• fileserver: Exclude symlink target size from total, show arrow on size by @francislavoie in #6412
• reverseproxy: Fix dynamic upstreams ip version by @armadi1809 in #6448
• reverseproxy: Add placeholder for networkAddr in active health check headers by @dylanschultzie in #6450
• Add option to set which HTTP method to use for active health checks by @jbro in #6453
• reverseproxy: Caddyfile support for health_method by @jbro in #6454
• reverseproxy: add health_upstream subdirective by @dylanschultzie in #6451
• ci: correct -tags nobadger on binary build by @girlbossceo in #6470
• Caddyfile support for TLS handshake matchers by @vnxme in #6461
• Caddyfile support for TLS connection and certificate selection policies by @vnxme in #6462
• chore: update golangci config by @mohammed90 in #6479
• encode: flush already compressed data to the stream by @WeidiDeng in #6471
• proxyprotocol: Update WrapListener to use ConnPolicyFunc for PROXY protocol by @pi-prakhar in #6485
• fileserver: add sort options by @lollipopkit in #6468
• go.mod: update quic-go package by @WeidiDeng in #6498
• Runtime placeholders for selected TLS and HTTP matchers by @vnxme in #6480
• replacer: {file.*} global placeholder strips trailing newline by @steffenbusch in #6411
• go.mod: update update golang/x/net by @WeidiDeng in #6500
• reverse_proxy: apply keep-alive setting for h2c requests by @WeidiDeng in #6343
• Fix a regression in #6480: the context may have no replacer by @vnxme in #6510
• caddyhttp: Export PrivateRangesCIDR() for plugins after #6480 by @vnxme in #6514
• ignore exec.ErrDot when starting caddy in background by @WeidiDeng in #6512
• ci: don't exit early on error in remote CI machine by @mohammed90 in #6519
• reverseproxy: Active health checks request body option by @jbro in #6520
• reverseproxy: Change logs for write errors to warn level by @jum in #6532
• cmd: Use a factory to create the caddy root command by @elee1766 in #6533
• chore: Fix a typo by @sunnyagain in #6534
• error: run error (msg) through replacer by @mohammed90 in #6536
• reverseproxy: allow user to define source address by @mohammed90 in #6504
• chore: build and test with Go 1.23 by @dunglas in #6526
• tls: use Go default kex for the moment that include PQC by @bwesterb in #6542
• ci: prepare syso files for windows embedding in release by @WeidiDeng in #6406
• Performance: Prevents the zap logger from serializing the request in rewrite.go. by @AlliBalliBaba in #6541
• fileserver: move sort to browse by @lollipopkit in #6502
• reverse_proxy: add placeholder http.reverse_proxy.retries by @steffenbusch in #6553
• fix(#6551): Unexpected behaviour if caddyhttp.Route is provisioned twice by @jbro in #6558
• caddytls: Add sni_regexp matcher by @vnxme in #6569
• rewrite: Avoid panic on bad arg count for uri by @mister-turtle in #6571
• perf: use zap's Check() to prevent useless allocs by @dunglas in #6560
• ci: update the linter action version by @mohammed90 in #6575
• update quic-go to v0.47.0 by @marten-seemann in #6582
• quic: enable qlog, controlled by QLOGDIR env by @marten-seemann in #6581
• caddytls: Give a better error message when given encrypted private keys by @francislavoie in #6591
• chore: Use slices package where possible by @francislavoie in #6585
• caddyhttp: Optimize logs using zap's WithLazy() by @AlliBalliBaba in #6590
• doc: remove docs of deprecated directives by @mohammed90 in #6566
• Implement issue #6296 passing FDs / socket activation by @MayCXC in #6573
• caddyhttp: Fix listener wrapper regression from #6573 by @MayCXC in #6599
• chore: Adjust incorrect reverse_proxy Caddyfile comment by @francislavoie in #6598
• http: ReponseWriter prefer ReadFrom if available by @WeidiDeng in #6565
• caddytls: Support new tls.context module by @mholt in #6369
• Better errors when reloading by @mholt in #6601
• caddyhttp: Escaping placeholders in CEL, add vars and vars_regexp by @francislavoie in #6594
• autohttps: Implement auto_https prefer_wildcard option by @francislavoie in #6146
• metrics: scope metrics to active config, add optional per-host metrics by @mohammed90 in #6531
• ci: install xcaddy to fix release flow by @mohammed90 in #6602

New Contributors

• @ririsoft made their first contribution in #6314
• @JasonYuan869 made their first contribution in #6398
• @klaxa made their first contribution in #6419
• @dylanschultzie made their first contribution in #6450
• @jbro made their first contribution in #6453
• @girlbossceo made their first contribution in #6470
• @vnxme made their first contribution in #6461
• @pi-prakhar made their first contribution in #6485
• @lollipopkit made their first contribution in #6468
• @sunnyagain made their first contribution in #6534
• @AlliBalliBaba made their first contribution in #6541
• @mister-turtle made their first contribution in #6571
• @MayCXC made their first contribution in #6573

Full Changelog: v2.8.4...v2.9.0-beta.2