v. 1.36.0

Unit 1.35.5 Released§

FreeUnit 1.35.5 promotes chunked request-body transformation out of experimental status, fixes a TLS busy-loop on peer-initiated close, plugs a set of memory and file-descriptor leaks in the port machinery, and upgrades njs.

Proxy / HTTP

Chunked request bodies are now automatically converted to Content-Length when forwarded upstream via a proxy action, for backends that do not accept Transfer-Encoding: chunked (e.g. Gitea). Resolves the client-side chunked, duplicate Transfer-Encoding, and RFC 9112 framing issues.
The chunked_transform setting is no longer experimental — enable it with {"settings": {"http": {"chunked_transform": true}}}.

TLS

Fixed a busy-loop in SSL_write on a peer-initiated close when the connection is aborted by the remote peer, which caused high CPU usage; the connection is now cleaned up properly.

Reliability

Fixed a mem-pool retain leak in the cert/script-store IPC paths (router side) and fd/buffer leaks in the cert/script/socket/access-log reply paths and the controller config-store path (main process side) — all reachable when nxt_port_msg_alloc fails inside the port machinery.

Tooling

Added unfreeze-sync.sh for automated migration of issues from nginx/unit to freeunitorg/freeunit with label mapping, deduplication, and dry-run preview.

Dependencies

Upgraded contrib njs to 0.9.8.

Full Changelog§

Changes with FreeUnit 1.35.5                                     29 May 2026

    *) Feature: automatically convert chunked request bodies to Content-Length
       when forwarding to upstream servers via proxy action. This enables
       compatibility with backends that do not support Transfer-Encoding:
       chunked (e.g., Gitea, servers requiring Content-Length). Fixes
       freeunitorg/freeunit#58, resolves nginx/unit#445 (client chunked),
       nginx/unit#1088 (duplicate TE), and nginx/unit#1278 (RFC 9112 epic).

    *) Change: chunked_transform feature is no longer experimental. Chunked
       request bodies can be accepted and transparently converted to
       Content-Length via configuration: { "settings": { "http":
       { "chunked_transform": true } } }

    *) Bugfix: fix TLS library busy-loop on peer-initiated close in SSL_write
       when connection is aborted by remote peer; prevents high CPU usage and
       ensures proper connection cleanup.

    *) Feature: add unfreeze-sync.sh script for automated migration of issues
       from nginx/unit to freeunitorg/freeunit with label mapping, deduplication,
       and dry-run preview support.

    *) Change: upgrade contrib njs to 0.9.8.

    *) Bugfix: fix mem-pool retain leak in cert/script-store IPC paths
       (router side) and fd/buffer leaks in cert/script/socket/access-log
       reply paths and the controller config-store path (main process
       side); all reachable when nxt_port_msg_alloc fails inside the
       port machinery.