Changes with Unit 1.34.2 26 Feb 2025 *) Security: fix missing websocket payload length validation in the Java language module which could lead to Java language module processes consuming excess CPU. (CVE-2025-1695). *) Bugfix: fix incorrect websocket payload length calculation in the Java language module. Changes with Unit 1.34.1 10 Jan 2025 *) Bugfix: fix instability issues due to OpenTelemetry (OTEL) support. *) Bugfix: fix issues with building OpenTelemetry (OTEL) support on various platforms, including macOS. Changes with Unit 1.34.0 19 Dec 2024 *) Feature: initial OpenTelemetry (OTEL) support. (Disabled by default). *) Feature: support for JSON formatted access logs. *) Bugfix: tweak the Perl language module to avoid breaking scripts in some circumstances. Changes with Unit 1.33.0 17 Sep 2024 *) Feature: make the number of router threads configurable. *) Feature: make the listen(2) backlog configurable. *) Feature: add Python application factory support. *) Feature: add experimental chunked request body support. (Disabled by default). *) Feature: add fuzzing via oss-fuzz. *) Feature: add "if" option to the "match" object. *) Feature: show list of loaded language modules in the /status endpoint. *) Feature: Unit ships with a new Rust based CLI application "unitctl". *) Feature: the wasm-wasi-component language module now inherits the processes environment. *) Change: under systemd unit runs in forking mode (once again). *) Change: if building with njs, version 0.8.3 or later is now required. *) Change: Unit now builds with -std=gnu11 (C11 with GNU extensions). *) Change: Unit now creates the full directory path for the PID file and control socket. *) Change: build system improvements, including pretty printing the make output and enabling various make variables to influence the build process (see: make help). *) Change: better detection of available runnable CPUs on Linux. *) Change: default listen(2) backlog on Linux now defaults to Kernel default. *) Bugfix: don't modify REQUEST_URI. *) Bugfix: fix a crash when interrupting a download via a proxy. *) Bugfix: wasm-wasi-component application process hangs after receiving restart signal from the control endpoint. *) Bugfix: njs variables accessed with a JS template literal should not be cacheable. *) Bugfix: properly handle deleting arrays of certificates. *) Bugfix: don't create the $runstatedir directory which triggered an Alpine packaging error. Changes with Unit 1.32.1 26 Mar 2024 *) Bugfix: NJS variables in templates may have incorrect values due to improper caching. *) Bugfix: Wasm application process hangs after receiving restart signal from the control. Changes with Unit 1.32.0 27 Feb 2024 *) Feature: WebAssembly Components using WASI interfaces defined in wasi:http/proxy@0.2.0. *) Feature: conditional access logging. *) Feature: njs variables access. *) Feature: $request_id variable contains a string that is formed using random data and can be used as a unique request identifier. *) Feature: options to set control socket permissions. *) Feature: Ruby arrays in response headers, improving compatibility with Rack v3.0. *) Feature: Python bytearray response bodies for ASGI applications. *) Bugfix: router could crash while sending large files. Thanks to rustedsword. *) Bugfix: serving static files from a network filesystem could lead to error. *) Bugfix: "uidmap" and "gidmap" isolation options validation. *) Bugfix: abstract UNIX socket name could be corrupted during configuration validation. Thanks to Alejandro Colomar. *) Bugfix: HTTP header field value encoding could be misinterpreted in Python module. *) Bugfix: Node.js http.createServer() accepts and ignores the "options" argument, improving compatibility with strapi applications, among others. *) Bugfix: ServerRequest.flushHeaders() implemented in Node.js module to make it compatible with Next.js. *) Bugfix: ServerRequest.httpVersion variable format in Node.js module. *) Bugfix: Node.js module handles standard library imports prefixed with "node:", making it possible to run newer Nuxt applications, among others. *) Bugfix: Node.js tarball location changed to avoid build/install errors. *) Bugfix: Go module sets environment variables necessary for building on macOS/arm64 systems. Changes with Unit 1.31.1 19 Oct 2023 *) Feature: allow to set the HTTP response status in Wasm module. *) Feature: allow uploads larger than 4GiB in Wasm module. *) Bugfix: application process could crash while rewriting URLs with query strings. *) Bugfix: requests larger than about 64MiB could cause error in Wasm module. *) Bugfix: when using many headers in Java module some of them could be corrupted due to memory realocation issue. *) Bugfix: ServerRequest.destroy() implemented in Node.js module to make it compatible with some frameworks that might use it. *) Bugfix: chunk argument of ServerResponse.write() can now be a Uint8Array to improve compatibility with Node.js 15.0.0 and above. *) Bugfix: Node.JS unit-http NPM module now has appropriate default paths for macOS/arm64 systems. *) Bugfix: build on musl libc with clang. Changes with Unit 1.31.0 31 Aug 2023 *) Change: if building with njs, version 0.8.0 or later is now required. *) Feature: technology preview of WebAssembly application module. *) Feature: "response_headers" option to manage headers in the action and fallback. *) Feature: HTTP response header variables. *) Feature: ASGI lifespan state support. Thanks to synodriver. *) Bugfix: ensure that $uri variable is not cached. *) Bugfix: deprecated options were unavailable. *) Bugfix: ASGI applications inaccessible over IPv6. Changes with Unit 1.30.0 10 May 2023 *) Change: remove Unix domain listen sockets upon reconfiguration. *) Feature: basic URI rewrite support. *) Feature: njs loadable modules support. *) Feature: per-application logging. *) Feature: conditional logging of route selection. *) Feature: support the keys API on the request objects in njs. *) Feature: default values for 'make install' pathnames such as prefix; this allows to './configure && make && sudo make install'. *) Feature: "server_version" setting to omit the version token from "Server" header field. *) Bugfix: request header field values could be corrupted in some cases; the bug had appeared in 1.29.0. *) Bugfix: PHP error handling (added missing 403 and 404 errors). *) Bugfix: Perl applications crash on second responder call. Changes with Unit 1.29.1 28 Feb 2023 *) Bugfix: stop creating world-writeable directories. *) Bugfix: memory leak related to njs. *) Bugfix: path parsing in PHP applications. *) Bugfix: enabled UTF-8 for Python config by default to avoid applications failing in some cases. *) Bugfix: using asyncio.get_running_loop() instead of asyncio.get_event_loop() when it's available to prevent errors in some Python ASGI applications. *) Bugfix: applications that make use of various low level APIs such as pthreads could fail to work correctly. *) Bugfix: websocket endianness detection for obscure operating systems. Changes with Unit 1.29.0 15 Dec 2022 *) Change: removed $uri auto-append for "share" when loading configuration. *) Change: prefer system crypto policy instead of hardcoding a default. *) Feature: njs support with the basic syntax of JS template literals. *) Feature: support per-application cgroups on Linux. *) Feature: the $request_time variable contains the request processing time. *) Feature: "prefix" option in Python applications to set WSGI "SCRIPT_NAME" and ASGI root-path variables. *) Feature: compatibility with Python 3.11. *) Feature: compatibility with OpenSSL 3. *) Feature: compatibility with PHP 8.2. *) Feature: compatibility with Node.js 19.0. *) Feature: Ruby Rack v3 support. *) Bugfix: fix error in connection statistics when using proxy. *) Bugfix: fix HTTP cookie parsing when the value contains an equals sign. *) Bugfix: PHP directory URLs without a trailing '/' would give a 503 error (fixed with a 301 re-direct). *) Bugfix: missing error checks in the C API. *) Bugfix: report the regex status in configure summary. Changes with Unit 1.28.0 13 Sep 2022 *) Change: increased the applications' startup timeout. *) Change: disallowed abstract Unix domain socket syntax in non-Linux systems. *) Feature: basic statistics API. *) Feature: customizable access log format. *) Feature: more HTTP variables support. *) Feature: forwarded header to replace client address and protocol. *) Feature: ability to get dynamic variables. *) Feature: support for abstract Unix sockets. *) Feature: support for Unix sockets in address matching. *) Feature: the $dollar variable translates to a literal "$" during variable substitution. *) Bugfix: router process could crash if index file didn't contain an extension. *) Bugfix: force SCRIPT_NAME in Ruby to always be an empty string. *) Bugfix: when isolated PID numbers reach the prototype process host PID, the prototype crashed. *) Bugfix: the Ruby application process could crash on SIGTERM. *) Bugfix: the Ruby application process could crash on SIGINT. *) Bugfix: mutex leak in the C API. Changes with Unit 1.27.0 02 Jun 2022 *) Feature: ability to specify a custom index file name when serving static files. *) Feature: variables support in the "location" option of the "return" action. *) Feature: support empty strings in the "location" option of the "return" action. *) Feature: added a new variable, $request_uri, that includes both the path and the query parts as per RFC 3986, sections 3-4. *) Feature: Ruby Rack environment parameter "SCRIPT_NAME" support. *) Feature: compatibility with GCC 12. *) Bugfix: Ruby Sinatra applications don't work without custom logging. *) Bugfix: the controller process could crash when a chain of more than four certificates was uploaded. *) Bugfix: some Perl applications failed to process the request body, notably with Plack. *) Bugfix: some Spring Boot applications failed to start, notably with Grails. *) Bugfix: incorrect Python protocol auto detection (ASGI or WSGI) for native callable object, notably with Falcon. *) Bugfix: ECMAScript modules did not work with the recent Node.js versions. Changes with Unit 1.26.1 02 Dec 2021 *) Bugfix: occasionally, the Unit daemon was unable to fully terminate; the bug had appeared in 1.26.0. *) Bugfix: a prototype process could crash on an application process exit; the bug had appeared in 1.26.0. *) Bugfix: the router process crashed on reconfiguration if "access_log" was configured without listeners. *) Bugfix: a segmentation fault occurred in the PHP module if chdir() or fastcgi_finish_request() was called in the OPcache preloading script. *) Bugfix: fatal errors on DragonFly BSD; the bug had appeared in 1.26.0. Changes with Unit 1.26.0 18 Nov 2021 *) Change: the "share" option now specifies the entire path to the files it serves, rather than a document root directory to be prepended to the request URI. *) Feature: automatic adjustment of existing configurations to the new "share" behavior when updating from previous versions. *) Feature: variables support in the "share" option. *) Feature: multiple paths in the "share" option. *) Feature: variables support in the "chroot" option. *) Feature: PHP opcache is shared between application processes. *) Feature: request routing by the query string. *) Bugfix: the router and app processes could crash when the requests limit was reached by asynchronous or multithreaded apps. *) Bugfix: established WebSocket connections could stop reading frames from the client after the corresponding listener had been reconfigured. *) Bugfix: fixed building with glibc 2.34, notably Fedora 35. Changes with Unit 1.25.0 19 Aug 2021 *) Feature: client IP address replacement from a specified HTTP header field. *) Feature: TLS sessions cache. *) Feature: TLS session tickets. *) Feature: application restart control. *) Feature: process and thread lifecycle hooks in Ruby. *) Bugfix: the router process could crash on TLS connection open when multiple listeners with TLS certificates were configured; the bug had appeared in 1.23.0. *) Bugfix: TLS connections were rejected for configurations with multiple certificate bundles in a listener if the client did not use SNI. *) Bugfix: the router process could crash with frequent multithreaded application reconfiguration. *) Bugfix: compatibility issues with some Python ASGI apps, notably based on the Starlette framework. *) Bugfix: a descriptor and memory leak occurred in the router process when an app process stopped or crashed. *) Bugfix: the controller or router process could crash if the configuration contained a full-form IPv6 in a listener address. *) Bugfix: the router process crashed when a request was passed to an empty "routes" or "upstreams" using a variable "pass" option. *) Bugfix: the router process crashed while matching a request to an empty array of source or destination address patterns. Changes with Unit 1.24.0 27 May 2021 *) Change: PHP added to the default MIME type list. *) Feature: arbitrary configuration of TLS connections via OpenSSL commands. *) Feature: the ability to limit static file serving by MIME types. *) Feature: support for chrooting, rejecting symlinks, and rejecting mount point traversal on a per-request basis when serving static files. *) Feature: a loader for automatically overriding the "http" and "websocket" modules in Node.js. *) Feature: multiple "targets" in Python applications. *) Feature: compatibility with Ruby 3.0. *) Bugfix: the router process could crash while closing a TLS connection. *) Bugfix: a segmentation fault might have occurred in the PHP module if fastcgi_finish_request() was used with the "auto_globals_jit" option enabled. Changes with Unit 1.23.0 25 Mar 2021 *) Feature: support for multiple certificate bundles on a listener via the Server Name Indication (SNI) TLS extension. *) Feature: "--mandir" ./configure option to specify the directory for man page installation. *) Bugfix: the router process could crash on premature TLS connection close; the bug had appeared in 1.17.0. *) Bugfix: a connection leak occurred on premature TLS connection close; the bug had appeared in 1.6. *) Bugfix: a descriptor and memory leak occurred in the router process when processing small WebSocket frames from a client; the bug had appeared in 1.19.0. *) Bugfix: a descriptor leak occurred in the router process when removing or reconfiguring an application; the bug had appeared in 1.19.0. *) Bugfix: persistent storage of certificates might've not worked with some filesystems in Linux, and all uploaded certificate bundles were forgotten after restart. *) Bugfix: the controller process could crash while requesting information about a certificate with a non-DNS SAN entry. *) Bugfix: the controller process could crash on manipulations with a certificate containing a SAN and no standard name attributes in subject or issuer. *) Bugfix: the Ruby module didn't respect the user locale for defaults in the Encoding class. *) Bugfix: the PHP 5 module failed to build with thread safety enabled; the bug had appeared in 1.22.0. Changes with Unit 1.22.0 04 Feb 2021 *) Feature: the ServerRequest and ServerResponse objects of Node.js module are now compliant with Stream API. *) Feature: support for specifying multiple directories in the "path" option of Python apps. *) Bugfix: a memory leak occurred in the router process when serving files larger than 128K; the bug had appeared in 1.13.0. *) Bugfix: apps could stop processing new requests under high load; the bug had appeared in 1.19.0. *) Bugfix: app processes could terminate unexpectedly under high load; the bug had appeared in 1.19.0. *) Bugfix: invalid HTTP responses were generated for some unusual status codes. *) Bugfix: the PHP_AUTH_USER, PHP_AUTH_PW, and PHP_AUTH_DIGEST server variables were missing in the PHP module. *) Bugfix: the router process could crash with multithreaded apps under high load. *) Bugfix: Ruby apps with multithreading configured could crash on start under load. *) Bugfix: mount points weren't unmounted when the "mount" namespace isolation was used; the bug had appeared in 1.21.0. *) Bugfix: the router process could crash while removing or reconfiguring an app that used WebSocket. *) Bugfix: a memory leak occurring in the router process when removing or reconfiguring an application; the bug had appeared in 1.19.0. Changes with Unit 1.21.0 19 Nov 2020 *) Change: procfs is mounted by default for all languages when "rootfs" isolation is used. *) Change: any characters valid according to RFC 7230 are now allowed in HTTP header field names. *) Change: HTTP header fields with underscores ("_") are now discarded from requests by default. *) Feature: optional multithreaded request processing for Java, Python, Perl, and Ruby apps. *) Feature: regular expressions in route matching patterns. *) Feature: compatibility with Python 3.9. *) Feature: the Python module now supports ASGI 2.0 legacy applications. *) Feature: the "protocol" option in Python applications aids choice between ASGI and WSGI. *) Feature: the fastcgi_finish_request() PHP function that finalizes request processing and continues code execution without holding onto the client connection. *) Feature: the "discard_unsafe_fields" HTTP option that enables discarding request header fields with irregular (but still valid) characters in the field name. *) Feature: the "procfs" and "tmpfs" automount isolation options to disable automatic mounting of eponymous filesystems. *) Bugfix: the router process could crash when running Go applications under high load; the bug had appeared in 1.19.0. *) Bugfix: some language dependencies could remain mounted after using "rootfs" isolation. *) Bugfix: various compatibility issues in Java applications. *) Bugfix: the Java module built with the musl C library couldn't run applications that use "rootfs" isolation. Changes with Unit 1.20.0 08 Oct 2020 *) Change: the PHP module is now initialized before chrooting; this enables loading all extensions from the host system. *) Change: AVIF and APNG image formats added to the default MIME type list. *) Change: functional tests migrated to the pytest framework. *) Feature: the Python module now fully supports applications that use the ASGI 3.0 server interface. *) Feature: the Python module now has a built-in WebSocket server implementation for applications, compatible with the HTTP & WebSocket ASGI Message Format 2.1 specification. *) Feature: automatic mounting of an isolated "/tmp" file system into chrooted application environments. *) Feature: the $host variable contains a normalized "Host" request value. *) Feature: the "callable" option sets Python application callable names. *) Feature: compatibility with PHP 8 RC 1. Thanks to Remi Collet. *) Feature: the "automount" option in the "isolation" object allows to turn off the automatic mounting of language module dependencies. *) Bugfix: "pass"-ing requests to upstreams from a route was broken; the bug had appeared in 1.19.0. Thanks to 洪志道 (Hong Zhi Dao) for discovering and fixing it. *) Bugfix: the router process could crash during reconfiguration. *) Bugfix: a memory leak occurring in the router process; the bug had appeared in 1.18.0. *) Bugfix: the "!" (non-empty) pattern was matched incorrectly; the bug had appeared in 1.19.0. *) Bugfix: fixed building on platforms without sendfile() support, notably NetBSD; the bug had appeared in 1.16.0. Changes with Unit 1.19.0 13 Aug 2020 *) Feature: reworked IPC between the router process and the applications to lower latencies, increase performance, and improve scalability. *) Feature: support for an arbitrary number of wildcards in route matching patterns. *) Feature: chunked transfer encoding in proxy responses. *) Feature: basic variables support in the "pass" option. *) Feature: compatibility with PHP 8 Beta 1. Thanks to Remi Collet. *) Bugfix: the router process could crash while passing requests to an application under high load. *) Bugfix: a number of language modules failed to build on some systems; the bug had appeared in 1.18.0. *) Bugfix: time in error log messages from PHP applications could lag. *) Bugfix: reconfiguration requests could hang if an application had failed to start; the bug had appeared in 1.18.0. *) Bugfix: memory leak during reconfiguration. *) Bugfix: the daemon didn't start without language modules; the bug had appeared in 1.18.0. *) Bugfix: the router process could crash at exit. *) Bugfix: Node.js applications could crash at exit. *) Bugfix: the Ruby module could be linked against a wrong library version. Changes with Unit 1.18.0 28 May 2020 *) Feature: the "rootfs" isolation option for changing root filesystem for an application. *) Feature: multiple "targets" in PHP applications. *) Feature: support for percent-encoding in the "uri" and "arguments" matching options and in the "pass" option. Changes with Unit 1.17.0 16 Apr 2020 *) Feature: a "return" action with optional "location" for immediate responses and external redirection. *) Feature: fractional weights support for upstream servers. *) Bugfix: accidental 502 "Bad Gateway" errors might have occurred in applications under high load. *) Bugfix: memory leak in the router; the bug had appeared in 1.13.0. *) Bugfix: segmentation fault might have occurred in the router process when reaching open connections limit. *) Bugfix: "close() failed (9: Bad file descriptor)" alerts might have appeared in the log while processing large request bodies; the bug had appeared in 1.16.0. *) Bugfix: existing application processes didn't reopen the log file. *) Bugfix: incompatibility with some Node.js applications. *) Bugfix: broken build on DragonFly BSD; the bug had appeared in 1.16.0. Changes with Unit 1.16.0 12 Mar 2020 *) Feature: basic load-balancing support with round-robin. *) Feature: a "fallback" option that performs an alternative action if a request can't be served from the "share" directory. *) Feature: reduced memory consumption by dumping large request bodies to disk. *) Feature: stripping UTF-8 BOM and JavaScript-style comments from uploaded JSON. *) Bugfix: negative address matching in router might work improperly in combination with non-negative patterns. *) Bugfix: Java Spring applications failed to run; the bug had appeared in 1.10.0. *) Bugfix: PHP 7.4 was broken if it was built with thread safety enabled. *) Bugfix: compatibility issues with some Python applications. Changes with Unit 1.15.0 06 Feb 2020 *) Change: extensions of dynamically requested PHP scripts were restricted to ".php". *) Feature: compatibility with Ruby 2.7. *) Bugfix: segmentation fault might have occurred in the router process with multiple application processes under load; the bug had appeared in 1.14.0. *) Bugfix: receiving request body over TLS connection might have stalled. Changes with Unit 1.14.0 26 Dec 2019 *) Change: the Go package import name changed to "unit.nginx.org/go". *) Change: Go package now links to libunit instead of including library sources. *) Feature: ability to change user and group for isolated applications when Unit daemon runs as an unprivileged user. *) Feature: request routing by source and destination addresses and ports. *) Bugfix: memory bloat on large responses. Changes with Unit 1.13.0 14 Nov 2019 *) Feature: basic support for HTTP reverse proxying. *) Feature: compatibility with Python 3.8. *) Bugfix: memory leak in Python application processes when the close handler was used. *) Bugfix: threads in Python applications might not work correctly. *) Bugfix: Ruby on Rails applications might not work on Ruby 2.6. *) Bugfix: backtraces for uncaught exceptions in Python 3 might be logged with significant delays. *) Bugfix: explicit setting a namespaces isolation option to false might have enabled it. Changes with Unit 1.12.0 03 Oct 2019 *) Feature: compatibility with PHP 7.4. *) Bugfix: descriptors leak on process creation; the bug had appeared in 1.11.0. *) Bugfix: TLS connection might be closed prematurely while sending response. *) Bugfix: segmentation fault might have occurred if an irregular file was requested. Changes with Unit 1.11.0 19 Sep 2019 *) Feature: basic support for serving static files. *) Feature: isolation of application processes with Linux namespaces. *) Feature: built-in WebSocket server implementation for Java Servlet Containers. *) Feature: direct addressing of API configuration options containing slashes "/" using URI encoding (%2F). *) Bugfix: segmentation fault might have occurred in Go applications under high load. *) Bugfix: WebSocket support was broken if Unit was built with some linkers other than GNU ld (e.g. gold or LLD). Changes with Unit 1.10.0 22 Aug 2019 *) Change: matching of cookies in routes made case sensitive. *) Change: decreased log level of common errors when clients close connections. *) Change: removed the Perl module's "--include=" ./configure option. *) Feature: built-in WebSocket server implementation for Node.js module. *) Feature: splitting PATH_INFO from request URI in PHP module. *) Feature: request routing by scheme (HTTP or HTTPS). *) Feature: support for multipart requests body in Java module. *) Feature: improved API compatibility with Node.js 11.10 or later. *) Bugfix: reconfiguration failed if "listeners" or "applications" objects were missing. *) Bugfix: applying a large configuration might have failed. Changes with Unit 1.9.0 30 May 2019 *) Feature: request routing by arguments, headers, and cookies. *) Feature: route matching patterns allow a wildcard in the middle. *) Feature: POST operation for appending elements to arrays in configuration. *) Feature: support for changing credentials using CAP_SETUID and CAP_SETGID capabilities on Linux without running main process as privileged user. *) Bugfix: memory leak in the router process might have happened when a client prematurely closed the connection. *) Bugfix: applying a large configuration might have failed. *) Bugfix: PUT and DELETE operations on array elements in configuration did not work. *) Bugfix: request schema in applications did not reflect TLS connections. *) Bugfix: restored compatibility with Node.js applications that use ServerResponse._implicitHeader() function; the bug had appeared in 1.7. *) Bugfix: various compatibility issues with Node.js applications. Changes with Unit 1.8.0 01 Mar 2019 *) Change: now three numbers are always used for versioning: major, minor, and patch versions. *) Change: now QUERY_STRING is always defined even if the request does not include the query component. *) Feature: basic internal request routing by Host, URI, and method. *) Feature: experimental support for Java Servlet Containers. *) Bugfix: segmentation fault might have occurred in the router process. *) Bugfix: various potential memory leaks. *) Bugfix: TLS connections might have stalled. *) Bugfix: some Perl applications might have failed to send the response body. *) Bugfix: some compilers with specific flags might have produced non-functioning builds; the bug had appeared in 1.5. *) Bugfix: Node.js package had wrong version number when installed from sources. Changes with Unit 1.7.1 07 Feb 2019 *) Security: a heap memory buffer overflow might have been caused in the router process by a specially crafted request, potentially resulting in a segmentation fault or other unspecified behavior (CVE-2019-7401). *) Bugfix: install of Go module failed without prior building of Unit daemon; the bug had appeared in 1.7. Changes with Unit 1.7 20 Dec 2018 *) Change: now rpath is set in Ruby module only if the library was not found in default search paths; this allows to meet packaging restrictions on some systems. *) Bugfix: "disable_functions" and "disable_classes" PHP options set via Control API did not work. *) Bugfix: Promises on request data in Node.js were not triggered. *) Bugfix: various compatibility issues with Node.js applications. *) Bugfix: a segmentation fault occurred in Node.js module if application tried to read request body after request.end() was called. *) Bugfix: a segmentation fault occurred in Node.js module if application attempted to send header twice. *) Bugfix: names of response header fields in Node.js module were erroneously treated as case-sensitive. *) Bugfix: uncatched exceptions in Node.js were not logged. *) Bugfix: global install of Node.js module from sources was broken on some systems; the bug had appeared in 1.6. *) Bugfix: traceback for exceptions during initialization of Python applications might not be logged. *) Bugfix: PHP module build failed if PHP interpreter was built with thread safety enabled. Changes with Unit 1.6 15 Nov 2018 *) Change: "make install" now installs Node.js module as well if it was configured. *) Feature: "--local" ./configure option to install Node.js module locally. *) Bugfix: Node.js module might have crashed due to broken reference counting. *) Bugfix: asynchronous operations in Node.js might not have worked. *) Bugfix: various compatibility issues with Node.js applications. *) Bugfix: "freed pointer is out of pool" alerts might have appeared in log. *) Bugfix: module discovery did not work on 64-bit big-endian systems like IBM/S390x. Changes with Unit 1.5 25 Oct 2018 *) Change: the "type" of application object for Go was changed to "external". *) Feature: initial version of Node.js package with basic HTTP request-response support. *) Feature: compatibility with LibreSSL. *) Feature: --libdir and --incdir ./configure options to install libunit headers and static library. *) Bugfix: connection might be closed prematurely while sending response; the bug had appeared in 1.3. *) Bugfix: application processes might have stopped handling requests, producing "last message send failed: Resource temporarily unavailable" alerts in log; the bug had appeared in 1.4. *) Bugfix: Go applications did not work when Unit was built with musl C library. Changes with Unit 1.4 20 Sep 2018 *) Change: the control API maps the configuration object only at "/config/". *) Feature: TLS support for client connections. *) Feature: TLS certificates storage control API. *) Feature: Unit library (libunit) to streamline language module integration. *) Feature: "408 Request Timeout" responses while closing HTTP keep-alive connections. *) Feature: improvements in OpenBSD support. Thanks to David Carlier. *) Bugfix: a segmentation fault might have occurred after reconfiguration. *) Bugfix: building on systems with non-default locale might be broken. *) Bugfix: "header_read_timeout" might not work properly. *) Bugfix: header fields values with non-ASCII bytes might be handled incorrectly in Python 3 module. Changes with Unit 1.3 13 Jul 2018 *) Change: UTF-8 characters are now allowed in request header field values. *) Feature: configuration of the request body size limit. *) Feature: configuration of various HTTP connection timeouts. *) Feature: Ruby module now automatically uses Bundler where possible. *) Feature: http.Flusher interface in Go module. *) Bugfix: various issues in HTTP connection errors handling. *) Bugfix: requests with body data might be handled incorrectly in PHP module. *) Bugfix: individual PHP configuration options specified via control API were reset to previous values after the first request in application process. Changes with Unit 1.2 07 Jun 2018 *) Feature: configuration of environment variables for application processes. *) Feature: customization of php.ini path. *) Feature: setting of individual PHP configuration options. *) Feature: configuration of execution arguments for Go applications. *) Bugfix: keep-alive connections might hang after reconfiguration. Changes with Unit 1.1 26 Apr 2018 *) Bugfix: Python applications that use the write() callable did not work. *) Bugfix: virtual environments created with Python 3.3 or above might not have worked. *) Bugfix: the request.Read() function in Go applications did not produce EOF when the whole body was read. *) Bugfix: a segmentation fault might have occurred while access log reopening. *) Bugfix: in parsing of IPv6 control socket addresses. *) Bugfix: loading of application modules was broken on OpenBSD. *) Bugfix: a segmentation fault might have occurred when there were two modules with the same type and version; the bug had appeared in 1.0. *) Bugfix: alerts "freed pointer points to non-freeble page" might have appeared in log on 32-bit platforms. Changes with Unit 1.0 12 Apr 2018 *) Change: configuration object moved into "/config/" path. *) Feature: basic access logging. *) Bugfix: 503 error occurred if Go application did not write response header or body. *) Bugfix: Ruby applications that use encoding conversions might not have worked. *) Bugfix: various stability issues. Changes with Unit 0.7 22 Mar 2018 *) Feature: Ruby application module. *) Bugfix: in discovering modules. *) Bugfix: various race conditions on reconfiguration and during shutting down. *) Bugfix: tabs and trailing spaces were not allowed in header fields values. *) Bugfix: a segmentation fault occurred in Python module if start_response() was called outside of WSGI callable. *) Bugfix: a segmentation fault might have occurred in PHP module if there was an error while initialization. Changes with Unit 0.6 09 Feb 2018 *) Bugfix: the main process died when the "type" application option contained version; the bug had appeared in 0.5. Changes with Unit 0.5 08 Feb 2018 *) Change: the "workers" application option was removed, the "processes" application option should be used instead. *) Feature: the "processes" application option with prefork and dynamic process management support. *) Feature: Perl application module. *) Bugfix: in reading client request body; the bug had appeared in 0.3. *) Bugfix: some Python applications might not have worked due to missing "wsgi.errors" environ variable. *) Bugfix: HTTP chunked responses might be encoded incorrectly on 32-bit platforms. *) Bugfix: infinite looping in HTTP parser. *) Bugfix: segmentation fault in router. Changes with Unit 0.4 15 Jan 2018 *) Feature: compatibility with DragonFly BSD. *) Feature: "configure php --lib-static" option. *) Bugfix: HTTP request body was not passed to application; the bug had appeared in 0.3. *) Bugfix: HTTP large header buffers allocation and deallocation fixed; the bug had appeared in 0.3. *) Bugfix: some PHP applications might not have worked with relative "root" path. Changes with Unit 0.3 28 Dec 2017 *) Change: the Go package name changed to "nginx/unit". *) Change: in the "limits.timeout" application option: application start time and time in queue now are not accounted. *) Feature: the "limits.requests" application option. *) Feature: application request processing latency optimization. *) Feature: HTTP keep-alive connections support. *) Feature: the "home" Python virtual environment configuration option. *) Feature: Python atexit hook support. *) Feature: various Go package improvements. *) Bugfix: various crashes fixed. Changes with Unit 0.2 19 Oct 2017 *) Feature: configuration persistence. *) Feature: improved handling of configuration errors. *) Feature: application "timeout" property. *) Bugfix: POST request for PHP were handled incorrectly. *) Bugfix: the router exited abnormally if all listeners had been deleted. *) Bugfix: the router crashed under load. *) Bugfix: memory leak in the router. Changes with Unit 0.1 06 Sep 2017 *) First public release.
