# Unicorn 0.990.0 - inching towards 1.0 **URL:** \ **Category:** Ruby\ **Created:** [June 8, 2010, 11:51am UTC](https://www.ruby-forum.com/t/unicorn-0-990-0-inching-towards-1-0/189819 "2010-06-08T11:51:55Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![ericw](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/e/97f17d/32.png) [@ericw](https://www.ruby-forum.com/u/ericw)\ **Post date:** [June 8, 2010, 11:51am UTC](https://www.ruby-forum.com/t/unicorn-0-990-0-inching-towards-1-0/189819/1 "2010-06-08T11:51:55Z")
Unicorn is an HTTP server for Rack applications designed to only serve fast clients on low-latency, high-bandwidth connections and take advantage of features in Unix/Unix-like kernels. Slow clients should only be served by placing a reverse proxy capable of fully buffering both the the request and response in between Unicorn and slow clients. - [http://unicorn.bogomips.org/](http://unicorn.bogomips.org/) - removed\_email\_address@domain.invalid - git://git.bogomips.org/unicorn.git Changes: Thanks to Augusto Becciu for finding a bug in the HTTP parser that caused a TypeError (and 500) when a rare client set the “Version:” header which conflicts with the HTTP\_VERSION header we parse in the first line of the request[1]. Horizontal tabs are now allowed as leading whitespace in header values as according to RFC 2616 as pointed out by Iñaki Baz C.[2]. Taking a hint from Rack 1.1, the “logger” configuration parameter no longer requires a “close” method. This means some more Logger replacements may be used. There’s a new, optional, Unicorn (and maybe Passenger)-only middleware, Unicorn::OobGC[2] that runs GC outside of the normal request/response cycle to help out memory-hungry applications. Thanks to Luke M. for being brave enough to test and report back on my big\_app\_gc.rb monkey patch[3] which lead up to this. Rails 3 (beta) support: Using “unicorn” is still recommended as Rails 3 comes with a [config.ru](http://config.ru), but “unicorn\_rails” is cleaned up a bit and _should_ work as well as “unicorn” out-of-the-box. Feedback is much appreciated. Rubinius updates: USR2 binary upgrades are broken due to {TCPServer,UNIXServer}.for\_fd[5][6] being broken (differently). Repeatedly hitting the server with signals in a tight loop is unusual and not recommended[7]. There are some workarounds and general code cleanups for other issues[8], as well but things should generally work unless you need USR2 upgrades. Feedback and reports would be greatly appreciated as usual. MRI support: All tests (except old Rails) run and pass under 1.9.2-preview3. 1.8.7 and 1.9.1 work well as usual and will continue to be supported indefinitely. Lets hope this is the last release before 1.0. Please report any issues on the mailing list[9] or email us privately[a]. Don’t send HTML mail. [1] - [http://mid.gmane.org/removed\_email\_address@domain.invalid](http://mid.gmane.org/removed_email_address@domain.invalid) [2] - [http://mid.gmane.org/removed\_email\_address@domain.invalid](http://mid.gmane.org/removed_email_address@domain.invalid) [3] - [module Unicorn::OobGC](http://unicorn.bogomips.org/Unicorn/OobGC.html) [4] - [http://unicorn.bogomips.org/examples/big\_app\_gc.rb](http://unicorn.bogomips.org/examples/big_app_gc.rb) [5] - [http://github.com/evanphx/rubinius/issues/354](http://github.com/evanphx/rubinius/issues/354) [6] - [http://github.com/evanphx/rubinius/issues/355](http://github.com/evanphx/rubinius/issues/355) [7] - [http://github.com/evanphx/rubinius/issues/356](http://github.com/evanphx/rubinius/issues/356) [8] - [http://github.com/evanphx/rubinius/issues/347](http://github.com/evanphx/rubinius/issues/347) [9] - [mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) [a] - [mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ---
**Author:** ![ericw](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/e/97f17d/32.png) [@ericw](https://www.ruby-forum.com/u/ericw)\ **Post date:** [June 11, 2010, 10:38pm UTC](https://www.ruby-forum.com/t/unicorn-0-990-0-inching-towards-1-0/189819/2 "2010-06-11T22:38:26Z")
Eric W. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Rubinius updates: > but things should generally work unless you > need USR2 upgrades. Feedback and reports would be greatly > appreciated as usual. Log rotation for $stderr and $stdout (but not other paths) are broken under Rubinius, too. I only discovered this while running the Rainbows! integration tests. ref: [http://github.com/evanphx/rubinius/issues/360](http://github.com/evanphx/rubinius/issues/360)