ChangeLog from bogomips.org/unicorn.git (v1.1.5..v4.3.1)

commit f4f2de4a526f3a88573f2f839e6865637c67dbe5
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Apr 29 07:00:48 2012 +0000

    unicorn 4.3.1 - shutdown() fixes

    * Call shutdown(2) if a client EOFs on us during upload.
      We can avoid holding a socket open if the Rack app forked a
      process during uploads.

    * ignore potential Errno::ENOTCONN errors (from shutdown(2)).
      Even on LANs, connections can occasionally be accept()-ed but
      be unusable afterwards.

    Thanks to Joel Nimety <jnimety@continuity.net>,
    Matt Smith <matt@nearapogee.com> and George <lists@southernohio.net>
    on the mongrel-unicorn@rubyforge.org mailing list for their
    feedback and testing for this release.

commit 60b9275410277acc6adcf49a81c177c443d1d392
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Apr 29 06:49:23 2012 +0000

    isolate_for_tests: upgrade to kgio-monkey 0.4.0

    Seems to work well enough...

commit 4551c8ad4d63d4031c618f76d39532b39e88f9be
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Apr 27 14:42:38 2012 -0700

    stream_input: call shutdown(2) if a client EOFs on us

    In case the Rack app forks before a client upload is complete,
    shutdown(2) the socket to ensure the client isn't attempting to
    read from us (even if it explicitly stopped writes).

commit 04901da5ae0b4655c83be05d24ae737f1b572002
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Apr 27 11:48:16 2012 -0700

    http_server: ignore ENOTCONN (mostly from shutdown(2))

    Since there's nothing unicorn can do to avoid this error
    on unconnected/halfway-connected clients, ignoring ENOTCONN
    is a safe bet.

    Rainbows! has long had this rescue as it called getpeername(2)
    on untrusted sockets

commit 8c1aff1e6335f8a55723907e2661dcb09ea16205
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Apr 17 21:32:07 2012 +0000

    unicorn 4.3.0 - minor fixes and updates

    * PATH_INFO (aka REQUEST_PATH) increased to 4096 (from 1024).
      This allows requests with longer path components and matches
      the system PATH_MAX value common to GNU/Linux systems for
      serving filesystem components with long names.

    * Apps that fork() (but do not exec()) internally for background
      tasks now indicate the end-of-request immediately after
      writing the Rack response.

    Thanks to Hongli Lai, Lawrence Pit, Patrick Wenger and Nuo Yan
    for their valuable feedback for this release.

commit e7f5de575b3fd58c65014191c31ed2a59bd05265
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Apr 17 21:10:51 2012 +0000

    tests: set executable bit on integration shell scripts

    These should be made executable for ease-of-understanding and
    consistency, regardless of whether we actually execute them.

commit 7eccef471a609c87281bb90d9d3b3d7a7b35709e
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Apr 12 07:40:46 2012 +0000

    http: increase REQUEST_PATH maximum length to 4K

    The previous REQUEST_PATH limit of 1024 is relatively small and
    some users encounter problems with long URLs.  4K is a common
    limit for PATH_MAX on modern GNU/Linux systems and REQUEST_PATH
    is likely to translate to a filesystem path name.

    Thanks to Nuo Yan <yan.nuo@gmail.com> and Lawrence Pit
    <lawrence.pit@gmail.com> for their feedback on this issue.

    ref: http://mid.gmane.org/CB935F19-72B8-4EC2-8A1D-5084B37C09F2@gmail.com

commit b26d3e2c4387707ca958cd9c63c213fc7ac558fa
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Apr 12 16:46:24 2012 -0700

    shutdown client socket for apps which fork in background

    Previously we relied on implicit socket shutdown() from the
    close() syscall.  However, some Rack applications fork()
    (without calling exec()), creating a potentially long-lived
    reference to the underlying socket in a child process.  This
    ends up causing nginx to wait on the socket shutdown when the
    child process exits.

    Calling shutdown() explicitly signals nginx (or whatever client)
    that the unicorn worker is done with the socket, regardless of
    the number of FD references to the underlying socket in
    existence.

    This was not an issue for applications which exec() since
    FD_CLOEXEC is always set on the client socket.

    Thanks to Patrick Wenger for discovering this.  Thanks to
    Hongli Lai for the tip on using shutdown() as is done in
    Passenger.

    ref: http://mid.gmane.org/CAOG6bOTseAPbjU5LYchODqjdF3-Ez4+M8jo-D_D2Wq0jkdc4Rw@mail.gmail.com

commit d258653745e1c8e8fa13b95b1944729294804946
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Apr 12 18:35:03 2012 -0700

    t/sslgen.sh: use larger keys for tests

    This seems required for TLSv1.2 under OpenSSL 1.0.1

commit 12cd717d612fe8170f53f5f8377137e1b41db015
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Apr 11 21:38:10 2012 +0000

    misc documentation spelling fixes

    Found via rdoc-spellcheck

commit 4757aa70c3b3ab953255f74831b6f98e6f32fb72
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Mar 26 21:35:10 2012 +0000

    unicorn 4.2.1 - minor fix and doc updates

    * Stale pid files are detected if a pid is recycled by processes
      belonging to another user, thanks to Graham Bleach.
    * nginx example config updates thanks to to Eike Herzbach.
    * KNOWN_ISSUES now documents issues with apps/libs that install
      conflicting signal handlers.

commit 84e92a9d301f3f42d1d1e4430db33dfb43d54818
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Mar 24 07:45:44 2012 +0000

    tests: depend on kgio 2.7.4

    This latest version of kgio improves portability to
    FreeBSD-based systems.

commit d0e7d8d770275654024887a05d9e986589ba358c
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Mar 20 20:05:59 2012 +0000

    log EPERM errors from invalid pid files

    In some cases, EPERM may indicate a real configuration problem,
    but it can also just mean the pid file is stale.

commit 1e13ffee3469997286e65e0563b6433e7744388a
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Mar 20 19:51:35 2012 +0000

    KNOWN_ISSUES: document signal conflicts in libs/apps

    Jeffrey Yeung confirmed this issue on the mailing list.

    ref: <E8D9E7CCC2621343A0A3BB45E8DEDFA91C682DD23D@CRPMBOXPRD04.polycom.com>

commit 9fc5c24920726d3c10bc9f39d8e97686b93cbbe0
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Mar 20 19:49:56 2012 +0000

    examples/nginx.conf: use $scheme instead of hard-coded "https"

    This adds a little more flexibility to the nginx config,
    especially as protocols (e.g. SPDY) become more prevalent.

    Suggested-by: Eike Herzbach <eike@herzbach.net>

commit 0daedd92d3e896a9fcd301bbb58e85bb54a939ee
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Mar 20 19:27:08 2012 +0000

    examples/nginx.conf: remove redundant word

    From: Eike Herzbach <eike@herzbach.net>

commit 2ce57950e0f61eb6f325a93cef9b7e0e598fc109
Author: Graham Bleach <graham@darkskills.org.uk>
Date:   Wed Feb 29 14:34:44 2012 +0000

    Start the server if another user has a PID matching our stale pidfile.

    If unicorn doesn't get terminated cleanly (for example if the machine
    has its power interrupted) and the pid in the pidfile gets used by
    another process, the current unicorn code will exit and not start a
    server. This tiny patch fixes that behaviour.

    Acked-by: Eric Wong <normalperson@yhbt.net>

commit b6a154eba6d79fd1572f61290e55f4d05df86730
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Jan 28 09:05:07 2012 +0000

    unicorn 4.2.0

    The GPLv3 is now an option to the Unicorn license.  The existing GPLv2
    and Ruby-only terms will always remain options, but the GPLv3 is
    preferred.

    Daemonization is correctly detected on all terminals for development
    use (Brian P O'Rourke).

    Unicorn::OobGC respects applications that disable GC entirely
    during application dispatch (Yuichi Tateno).

    Many test fixes for OpenBSD, which may help other *BSDs, too.
    (Jeremy Evans).

    There is now _optional_ SSL support (via the "kgio-monkey"
    RubyGem).  On fast, secure LANs, SSL is only intended for
    detecting data corruption that weak TCP checksums cannot detect.
    Our SSL support is remains unaudited by security experts.

    There are also some minor bugfixes and documentation
    improvements.

    Ruby 2.0.0dev also has a copy-on-write friendly GC which can save memory
    when combined with "preload_app true", so if you're in the mood, start
    testing Unicorn with the latest Ruby!

commit 8478a54008ea64bf734b9dfc78d940ed69bc00ff
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Jan 28 09:03:57 2012 +0000

    doc: update doc for Ruby 2.0.0dev CoW-friendliness

    Ruby 2.0.0dev is the future and includes a CoW-friendly GC,
    so we shall encourage folks to give Ruby 2.0.0dev a spin.

commit 49c70ae741b96588021eb1bb6327da4cf78f8ec0
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Jan 27 19:55:28 2012 +0000

    script/isolate_for_tests: disable sqlite3-ruby for Ruby 2.0.0dev

    We don't need it because we don't test old Rails with bleeding edge Ruby.

commit c8abf6a06c0bd7eb1dfc8457ef1c31de31e7715b
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Jan 27 19:54:41 2012 +0000

    disable old Rails tests for Ruby 2.0.0

    I doubt anybody would attempt to run ancient, unsupported versions
    of Rails on the latest (unreleased, even) versions of Ruby...

commit 79ae7110b37f9b82151cc61960d93a33bb543669
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Jan 27 19:27:43 2012 +0000

    script/isolate_for_tests: update to kgio 2.7.2

    Again, we test with the latest version.

commit d6d9178f5dc40cf5cb4c5ef61094d4103f23dce5
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jan 24 21:48:35 2012 +0000

    update tests for Rack 1.4.1

    Trying to ensure things always work with the latest version.

commit a7b286273690f801c61a1db9475f74299ffaef6c
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Jan 8 02:01:53 2012 +0000

    Rakefile: swap freshmeat.net URL for freecode.com

    :<

commit 0782f9fb69993b62dc0c3a90f900c4d8cf5745e6
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Dec 28 06:03:00 2011 +0000

    update tests for rack 1.4.0

    It's the latest and greatest version, so ensure everything
    works with it.

commit cda82b5ff44c8fcfb61315f822bbaefa3471d4fe
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Dec 17 06:51:58 2011 +0000

    http: test case for "Connection: TE"

    We need to be sure we don't barf on this header.

commit 68e8d3726542c549f291f82bdcb751d372c34597
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Dec 13 15:04:59 2011 -0800

    cleanup exception handling on SIGUSR1

    No need to duplicate logic here

commit 7688fe59a8a80f473b276aa1ab01ff24cab6a653
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Dec 13 06:04:51 2011 +0000

    quiet possible IOError from SIGUSR1 (reopen logs)

    It's possible for a SIGUSR1 signal to be received in the
    worker immediately before calling IO.select.  In that case,
    do not clutter logging with IOError and just process the
    reopen log request.

commit 2cc0db7761ee4286c5ccbc48395c70c41d402119
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Dec 5 02:27:14 2011 +0000

    socket_helper: fix grammerr fail

    Oops :x

commit ee6ffca0a8d129dd930f4c63d0c4c9ef034b245f
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Dec 5 01:33:41 2011 +0000

    socket_helper: set SO_KEEPALIVE on TCP sockets

    Even LANs can break or be unreliable sometimes and socket
    disconnect messages get lost, which means we fall back to
    the global (kill -9) timeout in Unicorn.

    While the default global timeout is much shorter (60s) than
    typical TCP timeouts, some HTTP application dispatches take much
    I/O or computational time (streaming many gigabytes), so the
    global timeout becomes ineffective.

    Under Linux, sysadmins are encouraged to lower the default
    net.ipv4.tcp_keepalive_* knobs in sysctl.  There should be
    similar knobs in other operating systems (the default keepalive
    intervals are usually ridiculously high, too high for anything).

    When the listen socket has SO_KEEPALIVE set, the flag should be
    inherited by accept()-ed sockets.

commit 27f666a973a59c8c6738a65b69f9060c41e6958c
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Dec 5 01:28:33 2011 +0000

    socket_helper: remove out-of-date comment for TCP_NODELAY

    We favor low latency and consistency with the Unix socket
    behavior even with TCP.

commit 5f8ea2614f92172c7b214441aa3c09a6054c3aa8
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Dec 5 01:26:39 2011 +0000

    bump dependencies

    We should always be testing with the newest available versions
    to watch for incompatibilities, even if we don't /require/ the
    latest ones to run.

commit fbcf6aa641e5827da48a3b6776c9897de123b405
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Nov 15 16:32:12 2011 -0800

    tests: try to set a shorter path for Unix domain sockets

    We're only allowed 108 bytes for Unix domain sockets.
    mktemp(1) usually generates path names of reasonable length
    and we rely on it anyways.

commit c4c880c5a2ac521d4a6d0bad132d38dfff375a6c
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Nov 15 15:28:44 2011 -0800

    tests: just use the sha1sum implemented in Ruby

    The output of SHA1 command-line tools is too unstable and
    I'm more comfortable with Ruby 1.9 encoding support than
    I was in 2009.

    Jeremy Evans noted the output of "openssl sha1" has
    changed since I last used it.

commit 2fd5910969419c17aa6a31fb2119eb47a121d497
Author: Jeremy Evans <jeremyevans0@gmail.com>
Date:   Tue Nov 15 15:26:36 2011 -0800

    test_helper: ensure test client connects to valid address

    You can listen on 0.0.0.0, but trying to connect to it doesn't work
    well on OpenBSD.

    Acked-by: Eric Wong <normalperson@yhbt.net>

commit 66c706acfb3cda802bac4629219e3c3e064352ed
Author: Jeremy Evans <jeremyevans0@gmail.com>
Date:   Tue Nov 15 15:21:58 2011 -0800

    t0011: fix test under OpenBSD

    expr on OpenBSD uses a basic regular expression (according to
    re_format(7)), which doesn't support +, only *.

    Acked-by: Eric Wong <normalperson@yhbt.net>

commit 9e62bc10294f0b6344b47cd596a93ae457d546fb
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Nov 15 15:13:15 2011 -0800

    configurator: limit timeout to 30 days

    There's no practical difference between a timeout of 30 days and
    68 years from an HTTP server standpoint.

    POSIX limits us to 31 days, actually, but there could be
    rounding error with floats used in Ruby time calculations and
    there's no real difference between 30 and 31 days, either...

    Thanks to Jeremy Evans for pointing out large values will throw
    EINVAL (on select(2) under OpenBSD with Ruby 1.9.3 and
    RangeError on older Rubies.

commit aab850780f9ff0d74c346d7fd62ac588f4d5879b
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Nov 15 15:09:21 2011 -0800

    t: ensure SSL certificates exist on fresh test

    We throw up some fake SSL certs for testing

commit c7ba76a21c5d00fb5c173cd6aa847442bbc652cb
Author: Yuichi Tateno <hotchpotch@gmail.com>
Date:   Mon Oct 3 16:51:19 2011 +0900

    OobGC: force GC.start

    [ew: we need to explicitly enable GC if it is disabled
     and respect applications that disable GC]

    Acked-by: Eric Wong <normalperson@yhbt.net>

commit ac346b5abcfa6253bd792091e5fb011774c40d49
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Sep 7 00:36:58 2011 +0000

    add preliminary SSL support

    This will also be the foundation of SSL support in Rainbows!
    and Zbatery.  Some users may also want to use this in
    Unicorn on LANs to meet certain security/auditing requirements.
    Of course, Nightmare! (in whatever form) should also be able to
    use it.

commit b48c6659b294b37f2c6ff3e75c1c9245522d48d1
Author: Brian P O'Rourke <bpo@somnambulance.net>
Date:   Wed Sep 14 18:50:29 2011 +0800

    Detect daemonization via configuration.

    This prevents the stopping of all workers by SIGWINCH if you're
    using a windowing system that will 'exec' unicorn from a process
    that's already in a process group.

    Acked-by: Eric Wong <normalperson@yhbt.net>

commit db2cba26acc5748bcf9919e3184a667c46911f8c
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Sep 9 16:10:55 2011 -0700

    Links: add a link to the UnXF middleware

    Since unicorn is designed to be deployed behind nginx (or
    similar), X-Forwarded-* headers are common and Rack applications
    may blindly trust spoofed X-Forwarded-* headers.  UnXF provides
    a central place for managing that trust by using rpatricia.

commit d209910e29d4983f8346233262a49541464252c1
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Sep 9 15:48:53 2011 -0700

    http_server: update comment on tick == 0

    The old comment was confusing.  We only zero the tick counter
    when forking because application loading can take a long time.
    Otherwise, it's always updated.

    ref: http://mid.gmane.org/20110908191352.GA25251@dcvr.yhbt.net

commit 0113de29108fb669a43d4d7f5528c77a2f96db57
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Sep 2 16:17:57 2011 -0700

    http_server: a few more things eligible for GC in worker

    There is no need to keep extra hashes or Proc objects around in
    the heap.

commit cd22c595633ec36b69c60f27f2c3841ae0f6faca
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Aug 29 19:54:32 2011 +0000

    add GPLv3 option to the license

    Existing license terms (Ruby-specific) and GPLv2 remain
    in place, but GPLv3 is preferred as it helps with
    distribution of AGPLv3 code and is explicitly compatible
    with Apache License (v2.0).

    Many more reasons are documented by the FSF:
    https://www.gnu.org/licenses/quick-guide-gplv3.html
    http://gplv3.fsf.org/rms-why.html

    ref: http://thread.gmane.org/gmane.comp.lang.ruby.unicorn.general/933

commit 8bed251777e9850b04f52f4c520e8b173bd1d756
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Aug 25 14:24:23 2011 -0700

    unicorn 4.1.1 - fix last-resort timeout accuracy

    The last-resort timeout mechanism was inaccurate and often
    delayed in activation since the 2.0.0 release.  It is now fixed
    and remains power-efficient in idle situations, especially with
    the wakeup reduction in MRI 1.9.3+.

    There is also a new document on application timeouts
    intended to discourage the reliance on this last-resort
    mechanism.  It is visible on the web at:

      http://unicorn.bogomips.org/Application_Timeouts.html

commit 34b400cbec2a05e9a1d9fad2d6bd34f54620fdcb
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Aug 24 17:59:55 2011 -0700

    doc: add Application Timeouts document

    Hopefully this leads to fewer worker processes being killed.

commit b781e5b1a9b652ee3da73e16851e1f17f0cecd88
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Aug 23 19:50:03 2011 -0700

    test_helper: remove needless LOAD_PATH mangling

    We do it in the Ruby invocation or RUBYLIB.

commit e9da4ce4c8917934242037db0c2735bd7dab1586
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Aug 23 17:39:53 2011 -0700

    fix sleep/timeout activation accuracy

    I've noticed in stderr logs from some folks that (last resort)
    timeouts from the master process are taking too long to activate
    due to the workarounds for suspend/hibernation.

commit 8d8b500816371fb8f8fce5e9f21cf235ee8d26ae
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Aug 22 20:04:47 2011 +0000

    .document: re-add OobGC documentation

    Oops!

commit 4f33a71dc2e24f0cc59315b49e7a7ffe71f368d3
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Aug 19 23:04:30 2011 +0000

    unicorn 4.1.0 - small updates and fixes

    * Rack::Chunked and Rack::ContentLength middlewares are loaded
      by default for RACK_ENV=(development|deployment) users to match
      Rack::Server behavior.  As before, use RACK_ENV=none if you want
      fine-grained control of your middleware.  This should also
      help users of Rainbows! and Zbatery.

    * CTL characters are now rejected from HTTP header values

    * Exception messages are now filtered for [:cntrl:] characters
      since application/middleware authors may forget to do so

    * Workers will now terminate properly if a SIGQUIT/SIGTERM/SIGINT
      is received while during worker process initialization.

    * close-on-exec is explicitly disabled to future-proof against
      Ruby 2.0 changes [ruby-core:38140]

commit 5a6d4ddd8ea2df799654abadb1e25f3def9d478b
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Aug 20 00:28:39 2011 +0000

    rdoc cleanups

commit 8de6ab371c1623669b86a5dfa8703c8fd539011f
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Aug 19 22:13:04 2011 +0000

    close race if an exit signal hits the worker before trap

    The signal handler from the master is still active and will
    push the pending signal to SIG_QUEUE if a worker receives
    a signal immediately after forking.

commit f8b22397ca395a9173d391e8699d539503707792
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Aug 19 21:55:35 2011 +0000

    gemspec: bump wrongdoc dependency for dev

    Hopefully it points people towards the mailing list

commit 86bbb84231a8a16ec54a621c66843b103b5a8610
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Aug 19 21:54:37 2011 +0000

    tests: bump test deps to the latest versions

    Nothing appears broken :)

commit 1077961a3f8933c65d39c7e6c9ed6ff3b6b53647
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Aug 19 20:47:29 2011 +0000

    Rack::Chunked and ContentLength middlewares by default

    This is needed to match the behavior of Rack::Server for
    RACK_ENV=(deployment|development), actually.  This won't
    affect users of other RACK_ENV values.

    This change has minor performance consequences, so users
    negatively affected should set RACK_ENV to "none" instead for
    full control of their middleware stack.

    This mainly affects Rainbows!/Zbatery users since they have
    persistent connections and /need/ Content-Length or
    Transfer-Encoding:chunked headers.

commit 7fe08addefb12bd2f4c63901e8cf631e9162ca51
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Aug 16 19:44:04 2011 -0700

    filter exception messages with control characters

    We do not want to affect terminals of users who view our log
    files.

commit b1f328b0dd3647168fcc8b1ad9b09284707ad929
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Aug 11 17:28:47 2011 -0700

    http_server: small simplification for redirects

    We only need the fileno in the key which we use
    to generate the UNICORN_FD env.  Otherwise the IO
    object is accepted and understood by Ruby.

commit 6ab27beeda3b0aaaa66f7cc4f734944a7aa84385
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Aug 11 12:59:09 2011 -0700

    future-proof against close-on-exec by default

    Setting the close-on-exec flag by default and closing
    non-standard descriptors is proposed for Ruby 1.9.4/2.0.0.
    Since Unicorn is one of the few apps to rely on FD inheritance
    across exec(), we need to workaround this by redirecting each
    listener FD to itself for Kernel#exec.

    Ruby supports a hash as the final argument to Kernel#exec since
    at least 1.9.1 (nobody cares for 1.9.0 anymore). This allows
    users to backport close-on-exec by default patches to older
    1.9.x installs without breaking anything.

    ref: http://redmine.ruby-lang.org/issues/5041

commit 60d60a6fa716e91651997d86e3cb9cda41475975
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Aug 11 12:46:27 2011 -0700

    test_socket_helper: Socket#bind may fail with EINVAL if IPv6 is missing

    I don't build IPv6 into all my kernels; maybe other testers do
    not, either.

commit ec8a8f32d257290aac377f1c7b1c496e1df75f73
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Aug 3 11:00:28 2011 -0700

    KNOWN_ISSUES: add link to FreeBSD jail workaround notes

    Thanks to Tatsuya Ono on the unicorn mailing list.

commit 406b8b0e2ed6e5be34d8ec3cd4b16048233c2856
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Aug 2 23:52:14 2011 +0000

    trap death signals in the worker sooner

    This helps close a race condition preventing shutdown if
    loading the application (preload_app=false) takes a long
    time and the user decides to kil workers instead.

commit 6d56d7ab891d2cb6127b4cba428a0f7c13b9d2ce
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jul 20 22:42:16 2011 +0000

    http_server: explicitly disable close-on-exec for listeners

    Future versions of Ruby may change this from the default *nix
    behavior, so we need to explicitly allow FD passing via exec().

    ref: http://redmine.ruby-lang.org/issues/5041

commit 83f72773b7242d86263a18950fca7c8101d7038d
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jul 12 23:52:33 2011 +0000

    http: reject non-LWS CTL chars (0..31 + 127) in field values

    RFC 2616 doesn't appear to allow most CTL bytes even though
    Mongrel always did.  Rack::Lint disallows 0..31, too, though we
    allow "\t" (HT, 09) since it's LWS and allowed by RFC 2616.

commit cc63e2ee54b4113c40631214618f51c9ef867a91
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Jul 1 07:52:31 2011 +0000

    socket_helper: fix undefined variable for logging

    I corrupted a Ruby build and SOL_TCP didn't get defined :x

commit 79c646d69822df542aaabe285eac08cdf4111dc0
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 29 18:49:45 2011 +0000

    unicorn 4.0.1 - regression bugfixes

    This release fixes things for users of per-worker "listen"
    directives in the after_fork hook.  Thanks to ghazel@gmail.com
    for reporting the bug.

    The "timeout" configurator directive is now truncated to
    0x7ffffffe seconds to prevent overflow when calling
    IO.select.

commit cdb9bc905cf8e15e8a7d0900f57409f54a7b80ac
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 29 18:48:42 2011 +0000

    configurator: limit timeout to 32-bit INT_MAX-1

    Nobody will miss one second if they specify an "infinite"
    timeout of ~68 years.  This prevents duplicating this logic
    in Rainbows!

commit 19f798301ac1884f423640efafb277b071bb5439
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 29 07:19:32 2011 +0000

    fix per-worker listen directive in after_fork hook

    The testcase for this was broken, too, so we didn't notice
    this :<

    Reported-by: ghazel@gmail.com on the Rainbows! mailing list,
    http://mid.gmane.org/BANLkTi=oQXK5Casq9SuGD3edeUrDPvRm3A@mail.gmail.com

commit 38672501206c9e64d241e3d8571f70b198f0c1e5
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jun 27 20:51:16 2011 +0000

    configurator: truncate timeouts to 32-bit LONG_MAX

    IO.select in Ruby can't wait longer than this.  This
    means Unicorn can't support applications that take
    longer than 68 years to respond :(

commit fb8bb4469849fa2b2241152aea7e9e82bd3cbcc8
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jun 27 08:12:58 2011 +0000

    unicorn 4.0.0 - for mythical hardware!

    A single Unicorn instance may manage more than 1024 workers
    without needing privileges to modify resource limits.  As a
    result of this, the "raindrops"[1] gem/library is now a required
    dependency.

    TCP socket defaults now favor low latency to mimic UNIX domain
    socket behavior (tcp_nodelay: true, tcp_nopush: false).  This
    hurts throughput, users who want to favor throughput should
    specify "tcp_nodelay: false, tcp_nopush: true" in the listen
    directive.

    Error logging is more consistent and all lines should be
    formatted correctly in backtraces.  This may break the
    behavior of some log parsers.

    The call stack is smaller and thus easier to examine backtraces
    when debugging Rack applications.

    There are some internal API changes and cleanups, but none that
    affect applications designed for Rack.  See "git log v3.7.0.."
    for details.

    For users who cannot install kgio[2] or raindrops, Unicorn 1.1.x
    remains supported indefinitely.  Unicorn 3.x will remain
    supported if there is demand.  We expect raindrops to introduce
    fewer portability problems than kgio did, however.

    [1] http://raindrops.bogomips.org/
    [2] http://bogomips.org/kgio/

commit 4785db8cf19899756c4a79462fed861a1d1bd96c
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jun 27 08:46:28 2011 +0000

    slightly faster worker process spawning

    It's still O(n) since we don't maintain a reverse mapping of
    spawned processes, but at least we avoid the extra overhead of
    creating an array every time.

commit 441bb8ab48f15f583b82a3f8520648a4694a198f
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Jun 25 22:40:20 2011 +0000

    reenable heartbeat checking for idle workers

    Some applications/libraries may launch background threads which
    can lock up the process.  So we can't disable heartbeat checking
    just because the main thread is sleeping.  This also has the
    side effect of reducing master process wakeups when all workers
    are idle.

commit 63bcecf48994aa9afe6dc2890efe3ba4b0696bbf
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Jun 24 08:17:02 2011 +0000

    test with latest kgio and rack versions

    We'll continue to support older versions, but make
    sure things on the latest ones work.

commit 079eb70692fcda9b4bcf572319434ffa7f9e9849
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Jun 24 07:19:22 2011 +0000

    allow multiline comments in config.ru

    This matches the latest Rack behavior.

    We can't just use Rack::Builder.parse_file because our option
    parser logic is slightly different and incompatible.

    ref: rack commit d31cf2b7c0c77c04510c08d95776315ceb24ba54

commit b3b6b0dff19f8a22a96525bba22bf061d03c3fc5
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Jun 23 05:12:08 2011 +0000

    http_server: avoid race conditions on SIGQUIT

    We don't want the Worker#tick= assignment to trigger after we
    accept a client, since we'd drop that request when we raise the
    exception that breaks us out of the worker loop.

    Also, we don't want to enter IO.select with an empty LISTENERS
    array so we can fail with IOError or Errno::EBADF.

commit fbe48964d79f3d592f4f75960c5940add9ccf22a
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 22 07:48:36 2011 +0000

    http_server: remove unused variable

    A leftover from the fchmod() days

commit 1a2dc92e7ff92157aa12e2c8a8a09ec0d56e0eb6
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 22 02:06:46 2011 +0000

    gemspec: fix raindrops dependency

    Oops, I suck at Ruby :x

commit de142bc61f714392b0902b6e66a31c34ba223cdb
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 22 02:05:20 2011 +0000

    TODO: remove scalability to >= 1024 workers item

    We can do it!

commit b08410facbccf96c67822a92888de0bc1910390e
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Jun 17 08:59:02 2011 +0000

    test_http_parser: fix for URI too long errors (#3)

    The random garbage generator may occasionally generate URIs that
    are too long and cause the URI-specific error to be raised
    instead of the generic parser error we recently introduced.

    Follow-up-to: commit 742c4d77f179a757dbcb1fa350f9d75b757acfc7

commit 5f478f5a9a58f72c0a844258b8ee614bf24ea9f7
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Jun 17 08:54:37 2011 +0000

    error logging is more consistent

    Backtraces are now formatted properly (with timestamps) and
    exceptions will be logged more consistently and similar to
    Logger defaults:

      "#{exc.message} (#{e.class})"
      backtrace.each { |line| ... }

    This may break some existing monitoring scripts, but errors
    will be more standardized and easier to check moving forward.

commit fa7ce0a6a755cb71a30417478fb797ee7b8d94b5
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Jun 17 07:32:17 2011 +0000

    add broken app test from Rainbows!

    "app error" is more correct, and consistent with Rainbows!

commit 593deb92e8ebd4e77e482c567d97b6ee496ac378
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Jun 16 23:57:31 2011 +0000

    ensure at_exit handlers run on graceful shutdown

    rescuing from SystemExit and exit()-ing again is ugly, but
    changes made to lower stack depth positively affect _everyone_
    so we'll tolerate some ugliness here.

    We'll need to disable graceful exit for some tests, too...

commit a0c59adf71506b8808de276b1288a319424ee71a
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Jun 16 22:54:40 2011 +0000

    replace fchmod()-based heartbeat with raindrops

    This means we no longer waste an extra file descriptor per
    worker process in the master.  Now there's no need to set a
    higher file descriptor limit for systems running >= 1024
    workers.

commit 95f543a9583e58c56b1c480df84b4b88e6669403
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Jun 16 23:11:28 2011 +0000

    add heartbeat timeout test from Rainbows!

    Just in case we break anything

commit 4beeb52b1c52ea4486dea13cebe2a8438a9f2139
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 15 01:10:07 2011 +0000

    memory reductions in worker process

    There's absolutely no need to keep the OptionParser around in
    worker processes.

commit e9e7a1c7c1778ed7cd7c724b26362d1f89b2801c
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 15 00:56:47 2011 +0000

    test_http_parser: fix for URI too long errors (again)

    The random garbage generator may occasionally generate URIs that
    are too long and cause the URI-specific error to be raised
    instead of the generic parser error we recently introduced.

    Follow-up-to: commit 742c4d77f179a757dbcb1fa350f9d75b757acfc7

commit a7d9eb03bf3ac554854990018a67f34c2221fb20
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 15 00:53:45 2011 +0000

    http_server: kill another stack frame off

    We always know we have zero workers at startup, so we don't
    need to check before hand.  SIGHUP users may suffer a small
    performance decrease as a result, but there's not much we
    can do about it.

commit f8953ce747bd35b2008fc3daa040b89002a3133e
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 15 00:47:25 2011 +0000

    http_server: factor out inherit_listeners! method

    This should be easier to understand and reduces garbage on
    stack, too.

commit 6aa423454d7c3926297426fc22d23c88531bd15a
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 15 00:45:37 2011 +0000

    test_response: httpdate is low resolution

    It may return the previous second

commit 63e421d82ac6d838f9b8b02d4a727bf6f783e7b6
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 15 00:39:37 2011 +0000

    remove BasicSocket.do_not_reverse_lookup setting

    kgio never does reverse lookup

commit 12024a6268d4e96fcf96df33fb7d82eaec9c16b1
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 15 00:20:26 2011 +0000

    http: delay CoW string invalidations in filter_body

    Not all invocations of filter_body will trigger CoW on the
    given destination string.  We can also avoid an unnecessary
    rb_str_set_len() in the non-chunked path, too.

commit d91ca210615432bdad3ee70c08908ea7064c6b95
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 15 00:15:42 2011 +0000

    http: remove tainting flag

    Needless line noise, kgio doesn't support tainting anyways.

commit c719497c6db220a9f58c71970f2370cb2e6c99c3
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 15 00:09:32 2011 +0000

    http_server: get rid of EINTR checks

    Ruby IO.select never raises that, actually

commit 742c4d77f179a757dbcb1fa350f9d75b757acfc7
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 15 00:08:03 2011 +0000

    test_http_parser: fix for URI too long errors

    The random garbage generator may occasionally generate URIs that
    are too long and cause the URI-specific error to be raised
    instead of the generic parser error we recently introduced.

commit 20c0f28cf60f164c9788b694625bce22962464f3
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 15 00:01:32 2011 +0000

    http_server: further reduce stack usage for app.call

    By avoid Array#each

commit ddcea26976f24dda8a0cd65022065100bb40fbb7
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jun 14 23:49:57 2011 +0000

    http_server: small cleanups for attr assignments

    ivar references using @ are slightly faster than calling
    attribute methods.

commit f1d8dd94122395cd7b072aeec8942f2cd6b8ca99
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jun 14 23:25:43 2011 +0000

    http_server: do not rescue from proper exits

    Oops, it messes logging up badly.

commit 2f3c135b15e6603e71bb9d6d054e5cd606c7b2b6
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jun 14 00:51:01 2011 +0000

    http: fix documentation for dechunk!

    chunk_ready! was my original name for it, but I'm indecisive
    when it comes to naming things.

commit c297fde2000dcc8bdf7cb9f912fb2ea07be1c282
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jun 13 23:42:54 2011 +0000

    http: dechunk! method to enter dechunk mode

    This allows one to enter the dechunker without parsing
    HTTP headers beforehand.  Since we skipped header parsing,
    trailer parsing is not supported since we don't know
    what trailers might be (to our knowledge, nobody uses trailers
    anyways)

commit 131c241840990753f7b75344092058ef7434ea8b
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jun 13 22:35:18 2011 +0000

    http: document reasoning for memcpy in filter_body

    copy-on-write behavior doesn't help you if your common
    use case triggers copies.

commit 4aa8fd1322ccb46fc58a4f26ca111a03c1720c7d
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jun 13 22:18:30 2011 +0000

    http: rename variables in filter_body implementation

    Makes things easier-to-understand since it's based on memcpy()

commit b1d8d3de991ebc5b7d655f2e8a1294129021db8a
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jun 13 22:17:14 2011 +0000

    change TCP defaults to favor low latency

    These TCP settings are a closer match to the behavior of
    Unix domain sockets and what users expect for fast streaming
    responses even if nginx can't provide them just now...

commit c1cac62571b543ac8e9f7203f8c315bb75516a20
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jun 13 21:44:24 2011 +0000

    gemspec: bump kgio dependency to ~> 2.4

    kgio 2.4.1 portability should be better than 2.3, so
    less user confusion and push them towards 2.4

commit 5d2284afdc2d4f4ff122394ae5fd78a32cb8c09e
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Jun 10 23:54:47 2011 +0000

    runtime stack size reductions

    This reduces the size of `caller` by 5 frames,
    which should make backtraces easier-to-read, raising
    exceptions less expensive, and reduce GC runtime.

commit 987b9496171b090e62de488ddc7b9a175c4c8d33
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Jun 10 23:44:10 2011 +0000

    test/benchmark/stack.ru: app for measuring stack depth

    Stack depth affects Ruby GC performance, so lowering it
    makes sense

commit 1c033dfd66c713afb05911e5e220adb7fc4ddc17
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Jun 9 13:36:20 2011 -0700

    unicorn 3.7.0 - minor feature update

    * miscellaneous documentation improvements
    * return 414 (instead of 400) for Request-URI Too Long
    * strip leading and trailing linear whitespace in header values

    User-visible improvements meant for Rainbows! users:

    * add :ipv6only "listen" option (same as nginx)

commit c3880bb0cc00821d1715a7dd94b0b76a03a7ace0
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jun 7 13:54:18 2011 -0700

    configurator: add :ipv6only directive

    Enabling this flag for an IPv6 TCP listener allows users to
    specify IPv6-only listeners regardless of the OS default.
    This should be interest to Rainbows! users.

commit 0dc56fd03ea478ae054e3d0398703f43e017723b
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jun 7 09:56:30 2011 -0700

    build: ensure gem and tgz targets build manpages

    Original patch by Hongli Lai <hongli@phusion.nl>:

    > >From bfefc2cf0efb0913a42862886363b3140dcdbb2a Mon Sep 17 00:00:00 2001
    > From: Hongli Lai (Phusion) <hongli@phusion.nl>
    > Date: Mon, 6 Jun 2011 13:39:00 +0200
    > Subject: [PATCH] Ensure that 'make gem' builds the documentation too.
    >
    > If autogenerated documentation files, like man pages, don't exist then
    > 'make gem' will fail, complaining that some files are not found. By
    > depending the 'gem' target on the 'doc' target we ensure that 'make gem'
    > always works.
    >
    > Signed-off-by: Hongli Lai (Phusion) <hongli@phusion.nl>

    ref: http://mid.gmane.org/4DED0EE2.7040400@phusion.nl

commit 6eefc641c84eaa86cb2be4a2b1983b15efcbfae1
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jun 7 09:38:34 2011 -0700

    examples/nginx.conf: better wording for ipv6only comment

    Oops.

commit 32b340b88915ec945ebdbfa11b7da242860a6f44
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jun 6 19:15:36 2011 -0700

    examples/nginx.conf: add ipv6only comment

    IPv4-mapped-IPv6 addresses are fugly.

commit f4b9c1cb92711a62ae047368d7694c5050d27f2c
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jun 6 10:00:36 2011 -0700

    Documentation: remove --sanitize-html for pandoc

    pandoc 1.8 no longer has this.

commit 8e8781aa7002079ad066c11d271b98fc29f225dd
Author: Hongli Lai (Phusion) <hongli@phusion.nl>
Date:   Mon Jun 6 13:36:57 2011 +0200

    Document the method for building the Unicorn gem.

    Signed-off-by: Hongli Lai (Phusion) <hongli@phusion.nl>

commit 6e550cabdafd2cb0fcd1617f8815a732e79af670
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon May 23 23:59:53 2011 +0000

    isolate_for_tests: use rake 0.8.7

    Rails 3.0.0 can't use Rake 0.9.0 it seems.

commit 3e8971f3998249c58c9958815e0f17a04256ef9f
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon May 23 23:59:31 2011 +0000

    gemspec: use latest Isolate (3.1)

    It's required for RubyGems 1.8.x

commit 67e1fa9f9535ad009d538b8189bb3bdec0e5f79c
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon May 23 21:53:19 2011 +0000

    http: call rb_str_modify before rb_str_resize

    Ruby 1.9.3dev (trunk) requires it if the string size
    is unchanged.

commit 1b31c40997ff8b932a457275e9a2f219de1d32c8
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon May 23 21:04:56 2011 +0000

    strip trailing and leading linear whitespace in headers

    RFC 2616, section 4.2:
    > The field-content does not include any leading or trailing LWS:
    > linear white space occurring before the first non-whitespace
    > character of the field-value or after the last non-whitespace
    > character of the field-value. Such leading or trailing LWS MAY be
    > removed without changing the semantics of the field value. Any LWS
    > that occurs between field-content MAY be replaced with a single SP
    > before interpreting the field value or forwarding the message
    > downstream.

commit 947704e3f8e67b8262815838e87b331802c7ba67
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon May 23 18:22:44 2011 +0000

    doc: add Links page to help folks find relevant info

    Older announcements on our mailing list could be harder
    to find.

commit 66be289901508d5a6ed092db81ec96815c42d21d
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon May 23 18:21:50 2011 +0000

    GNUmakefile: locale-independent grep invocation

    Otherwise it could casefold and we don't want that.

commit c20077db941cc969fb3721c7527d37a99367f220
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun May 8 02:39:42 2011 +0000

    doc: PHILOSOPHY: formatting fixes

    No need to list things inside preformatted text

commit 77a951c5da518dda471282635c98f3b572ca15db
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu May 5 16:42:26 2011 -0700

    http_parser: add max_header_len accessor

    Rainbows! wants to be able to lower this eventually...

commit 733cb68e444a6f324bb1ffda3839da98ef010c74
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu May 5 16:40:42 2011 -0700

    t0002-parser-error: fix race conditions

    "wait" needs to be done in the outside shell because
    the subshell could still be exiting when we grep.

commit 39ffd5590e4b5d2114215854deec848f849e9e87
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed May 4 17:59:48 2011 -0700

    doc: remove redundant "of" typo

commit 1b0ee5826ef146a3e2647c40f3bc929d51d1b442
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed May 4 17:04:51 2011 -0700

    http_parser: new add_parse method

    Combines the following sequence:

       http_parser.buf << socket.readpartial(0x4000)
       http_parser.parse

    Into:

       http_parser.add_parse(socket.readpartial(0x4000))

    It was too damn redundant otherwise...

commit f81aa02448b615c4d5fc4f6544c53289dae9d2ec
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed May 4 16:41:36 2011 -0700

    return 414 for URI length violations

    There's an HTTP status code allocated for it in
    <http://www.iana.org/assignments/http-status-codes>, so
    return that instead of 400.

commit 3a76dc40dda91a3804276fcc73260bb2a529c034
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Apr 30 11:09:32 2011 -0700

    Sandbox: update doc for latest Bundler versions

    Bundler 1.0.x is much improved :)

commit f848f632a81cf8ebc977592cbf9a45d84a69f306
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Apr 30 06:34:52 2011 +0000

    unicorn 3.6.2 - fix Unicorn::OobGC module

    The optional Unicorn::OobGC module is reimplemented to fix
    breakage that appeared in v3.3.1.  There are also minor
    documentation updates, but no code changes as of 3.6.1 for
    non-OobGC users.

    There is also a v1.1.7 release to fix the same OobGC breakage
    that appeared for 1.1.x users in the v1.1.6 release.

commit 1588c299703754e52b9f36219c21e13204734e6c
Merge: fe47a17 0874125
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Apr 30 06:33:53 2011 +0000

    Merge commit 'v1.1.7'

    * commit 'v1.1.7':
      unicorn 1.1.7 - major fixes to minor components
      oob_gc: reimplement to fix breakage and add tests
      exec_cgi: handle Status header in CGI response
      unicorn 1.1.6 - one minor, esoteric bugfix
      close client socket after closing response body

commit fe47a179468799bbbb893b339cbb0d4fedf29c2a
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Apr 29 23:31:35 2011 -0700

    TUNING: more minor doc updates

commit 0874125ce56d52cee0f634712e69d1387eadfae1
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Apr 30 04:56:28 2011 +0000

    unicorn 1.1.7 - major fixes to minor components

    No changes to the core code, so this release only affects users
    of the Unicorn::OobGC and Unicorn::ExecCGI modules.
    Unicorn::OobGC was totally broken by the fix in the v1.1.6
    release and is now reimplemented.  Unicorn::ExecCGI (which
    hardly anybody uses) now returns proper HTTP status codes.

commit fe0dd93cd9cb97b46f6cfb4b1e370e38717a93f0
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Apr 29 15:48:35 2011 -0700

    oob_gc: reimplement to fix breakage and add tests

    This was broken since v3.3.1[1] and v1.1.6[2] since nginx relies on
    a closed socket (and not Content-Length/Transfer-Encoding) to
    detect a response completion.  We have to close the client
    socket before invoking GC to ensure the client sees the response
    in a timely manner.

    [1] - commit b72a86f66c722d56a6d77ed1d2779ace6ad103ed
    [2] - commit b7a0074284d33352bb9e732c660b29162f34bf0e

    (cherry picked from commit faeb3223636c39ea8df4017dc9a9d39ac649b26d)

    Conflicts:

     examples/big_app_gc.rb
     lib/unicorn/oob_gc.rb

commit 02a116c0d94a60a64abf8ad2465132e8194dd62a
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Apr 29 16:01:35 2011 -0700

    TUNING: document worker_processes tuning

    It seems people are still confused about it...

commit faeb3223636c39ea8df4017dc9a9d39ac649b26d
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Apr 29 15:48:35 2011 -0700

    oob_gc: reimplement to fix breakage and add tests

    This was broken since v3.3.1[1] since nginx relies on a closed
    socket (and not Content-Length/Transfer-Encoding) to detect
    a response completion.  We have to close the client socket
    before invoking GC to ensure the client sees the response
    in a timely manner.

    [1] - commit b72a86f66c722d56a6d77ed1d2779ace6ad103ed

commit ce4995a4daf1e4da7034dc87fd218a283c405410
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Apr 29 15:30:07 2011 -0700

    TUNING: original sentence was incomplete

commit 843d30120139dc372aca6c1773ac7699b6ee6345
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Apr 29 12:21:38 2011 -0700

    examples/big_app_gc: fix comment

    Oops, comments should match the latest code

commit d4f70c45029ab1c6aba4bc2d69283ae43e46d9ff
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Apr 29 12:18:59 2011 -0700

    examples/big_app_gc: update this example

    OobGC is actually broken with nginx these days since
    we needed to preserve the env for body.close...

commit eaf72275e36560e567efc9597d929e02dc2f577d
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Apr 27 13:49:14 2011 -0700

    configurator: attempt to clarify :tcp_nopush/:tcp_nodelay

    These options will probably be more important as interest in
    streaming responses in Rails 3.1 develops.

    I consider the respective defaults for Unicorn (designed to run
    behind nginx) and Rainbows! (designed to run standalone) to be
    the best choices in their respective environments.

commit 37c491dcc23d445521229dbe902f02833f2a0f4c
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Apr 27 13:13:24 2011 -0700

    examples/nginx.conf: clarify proxy_buffering for Rails 3.1

    I've tested with nginx 1.0.0 and confirmed "proxy_buffering off;"
    can cause Unicorn to block on a slow client reading a
    large response.  While there's a potential (client-visible)
    performance improvement with Rails 3.1 streaming responses, it
    can also hurt the server with slow clients.

    Rainbows! with (ThreadSpawn or ThreadPool) is probably the best
    way to do streaming responses efficiently from all angles (from
    a server, client and programmer time perspective).

commit 1b3befbadb99c83c24109f68b719276f0051c7fb
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Apr 26 16:04:19 2011 -0700

    unicorn 3.6.1 - fix OpenSSL PRNG workaround

    Our attempt in 3.6.0 to workaround a problem with the OpenSSL
    PRNG actually made the problem worse.  This release corrects the
    workaround to properly reseed the OpenSSL PRNG after forking.

commit 34f7dbd1b7e087bc8c86029496fd8daa7dc58441
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Apr 26 16:01:31 2011 -0700

    properly reseed OpenSSL::Random after forking

    Using the return value of Kernel#srand actually made the
    problem worse.  Using the value of Kernel#rand is required
    to actually get a random value to seed the OpenSSL PRNG.

    Thanks to ghazel for the bug report!

commit 2aabf90ca53b31edef6c2b63006c33374840c816
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Apr 21 06:16:27 2011 +0000

    unicorn 3.6.0 - small fixes, PRNG workarounds

    Mainly small fixes, improvements, and workarounds for fork() issues
    with pseudo-random number generators shipped with Ruby (Kernel#rand,
    OpenSSL::Random (used by SecureRandom and also by Rails).

    The PRNG issues are documented in depth here (and links to Ruby Redmine):

      http://bogomips.org/unicorn.git/commit?id=1107ede7
      http://bogomips.org/unicorn.git/commit?id=b3241621

    If you're too lazy to upgrade, you can just do this in your after_fork
    hooks:

      after_fork do |server,worker|
        tmp = srand
        OpenSSL::Random.seed(tmp.to_s) if defined?(OpenSSL::Random)
      end

    There are also small log reopening (SIGUSR1) improvements:

    * relative paths may also be reopened, there's a small chance this
      will break with a handful of setups, but unlikely.  This should
      make configuration easier especially since the "working_directory"
      configurator directive exists.  Brought up by Matthew Kocher:
      http://thread.gmane.org/gmane.comp.lang.ruby.unicorn.general/900

    * workers will just die (and restart) if log reopening fails for
      any reason (including user error).  This is to workaround the issue
      reported by Emmanuel Gomez:
      http://thread.gmane.org/gmane.comp.lang.ruby.unicorn.general/906

commit 4f7f3bbb973c8f2bb4b189592158a0682ea2a625
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Apr 21 06:23:21 2011 +0000

    http_server: fix Rainbows! compatibility

    Older Rainbows! redefines the ready_pipe= accessor method
    to call internal after_fork hooks.

commit c6c9cae960bd8cbfa2feb801ca7079f6626b436b
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Apr 20 16:02:51 2011 +0000

    KNOWN_ISSUES: document PRNG changes in 3.6.0

commit 6411add3f1a5aae5f2e0dcd73cd842500d21e9fd
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Apr 18 15:53:08 2011 -0700

    documentation cleanup/reduction

    Don't clutter up our RDoc/website with things that users
    of Unicorn don't need to see.  This should make user-relevant
    documentation easier to find, especially since Unicorn is
    NOT intended to be an API.

commit 1107ede716461049033d6a5b311e14c742c9363a
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Apr 18 15:34:29 2011 -0700

    reseed OpenSSL PRNG upon fork() of workers

    OpenSSL seeds its PRNG with the process ID, so if a process ID
    is recycled, there's a chance of indepedent workers getting
    repeated PRNG sequences over a long time period iff the same
    PID is used.

    This only affects deployments that meet both of the following
    conditions:

    1) OpenSSL::Random.random_bytes is called before forking
    2) worker (but not master) processes are die unexpectedly

    The SecureRandom module in Ruby (and Rails) uses the OpenSSL
    PRNG if available.  SecureRandom is used by Rails and called
    when the application is loaded, so most Rails apps with
    frequently dying worker processes are affected.

    Of course dying worker processes are bad and entirely the
    fault of bad application/library code, not the fault of
    Unicorn.

    Thanks for Alexander Dymo for reporting this.

    ref: http://redmine.ruby-lang.org/issues/4579

commit b32416211ef30e958ec38c8c99833161cd476dd4
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Apr 18 22:21:58 2011 +0000

    reinitialize PRNG for latest Ruby 1.8.7 releases

    The current versions of Ruby 1.8 do not reseed the PRNG after
    forking, so we'll work around that by calling Kernel#srand.

    ref: http://redmine.ruby-lang.org/issues/show/4338

commit 3c8f21a4257578e9cdc4781dd21a6a572e25ca54
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Apr 13 08:05:51 2011 +0000

    fix some 1.9.3dev warnings

commit 1355d262288352c2ced67cefc2301cee79bec0dd
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Apr 13 07:55:11 2011 +0000

    configurator: fix broken local variable

    Oops, changing a method definition for RDoc means code
    needs to be updated, too :x

commit 30ece1c7cc66b2fc816b1361e498ca0d4a554a78
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Apr 13 07:43:05 2011 +0000

    GNUmakefile: s/Config/RbConfig/

    "Config" is deprecated and warns under 1.9.3dev

commit cabbc6ce06487619431af102378aefa08d55f9f1
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Apr 13 07:34:31 2011 +0000

    http_server: workers die on log reopen failures

    They should then recover and inherit writable descriptors
    from the master when it respawns.

commit c1322a721d9039f54da97cf50de49f2affbfff37
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Apr 13 05:41:07 2011 +0000

    http_parser: remove RDoc

    It's not needed for users, so avoid confusing them.
    Unicorn itself is not intended to be an API, it just
    hosts Rack applications.

commit 8c359f50ce8b20dc3d72fe655db9d93c4a8ee7d5
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Apr 13 01:43:31 2011 +0000

    configurator: miscellaneous RDoc improvements

    Mainly formatting and such, but some wording changes.

commit 2d1a4fbe37ebb0f229edbaefd392bdd8b6865590
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Apr 13 01:11:29 2011 +0000

    worker: improve RDoc, point users to Configurator#user

commit 46cc05089ea34b823454f790092f386f22d3adb1
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Apr 13 01:04:19 2011 +0000

    configurator: remove outdated user example in after_fork

    Configurator itself supports user at the top-level.

commit c4d3cd7d7b32ed133e25e3740c8e7a3493592eec
Author: Emmanuel Gomez <emmanuel.gomez@gmail.com>
Date:   Tue Apr 12 15:36:36 2011 -0700

    Document "user" directive in example unicorn conf

commit 6647dcb3afa4c0b16c5fef5bfdf88292e6adf6ca
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Apr 1 16:09:03 2011 -0700

    util: allow relative paths to be rotated

    Users keep both pieces if it's broken :)

commit ebcc5b45adfb1d04af98356d867e9221ecdc9b70
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Apr 1 15:48:30 2011 -0700

    bump dependencies for testing

    No need to use an ancient Rack now that we've dropped Rails
    2.3.x tests.  We need to remember that Rack 1.1.0 doesn't
    support input#size.

commit e5bf7b7207d69daf1c3537797aeeab2642f19514
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Apr 1 15:44:22 2011 -0700

    drop Rails 2.3.x tests

    They were transitionary releases and the logic to deal with them
    and Rack versioning was too much overhead.

commit c1ebb313735a280582d87c1ba44619aa47e00b06
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Mar 29 09:47:26 2011 -0700

    add examples/logrotate.conf

    logrotate is the de facto tool for logrotation, so an
    example config for highlighting important parts are in order.

    Since our USR1 signal handling is part of the crusade against
    the slow and lossy "copytruncate" option, be sure to
    emphasize that :)

commit ede28dc59562c862ff4641ed42a0ef357880d0f5
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Mar 27 20:35:16 2011 -0700

    tmpio: do not redefine size method under 1.9.2+

    File#size is available in 1.9.2

commit 9de69c47e0a261bc88ca40e03562b7324baaf0cf
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Mar 22 17:57:03 2011 -0700

    DESIGN: fix redundant wording

    "P" in HTTP is already "protocol"

commit 5da78214be9518879ee96345d8184913853fe890
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Mar 22 17:48:30 2011 -0700

    README: s/Gemcutter/RubyGems.org/

    Gemcutter is the old name

commit d1c9aa300c0cbda272f197b734b3e895959ae3e3
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Mar 15 12:19:30 2011 +0000

    unicorn 3.5.0 - very minor improvements

    A small set of small changes but it's been more than a month
    since our last release.  There are minor memory usage and
    efficiently improvements (for graceful shutdowns).  MRI 1.8.7
    users on *BSD should be sure they're using the latest patchlevel
    (or upgrade to 1.9.x) because we no longer workaround their
    broken stdio (that's MRI's job :)

commit e6b6782030d8593006b4b7cace866cf42dd38d51
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Mar 8 06:59:53 2011 +0000

    gemspec: update kgio dependency to 2.3.2

    People reinstalling would've pulled it in anyways, but
    2.3.2 is the latest and has no known issues.

commit 1594937132a5d9b7f1dc24cc47e3a27679ac9950
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Mar 8 06:59:08 2011 +0000

    gemspec: no need for require_paths

commit cc7e65a1aa1bacc9658a687140011e999be6e3e7
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Feb 25 17:54:24 2011 +0000

    tee_input: remove old *BSD stdio workaround

    Ruby 1.8.* users should get the latest Ruby 1.8.7 anyways since
    they contain critical bugfixes.  We don't keep workarounds
    forever since the root problem is fixed/worked-around in
    upstream and people have had more than a year to upgrade Ruby.

commit 2b6dd7653211d3d6b4cb6a46eec11bbde8cab789
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Feb 18 17:02:08 2011 -0800

    clear listeners array on SIGQUIT

    We don't want to repeatedly reclose the same IOs
    and keep raising exceptions this way.

commit d3ebd339990b0586a5993232302235c26cdb33d9
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Feb 16 10:33:20 2011 -0800

    README: clarify the versions of "Ruby license"

    Ruby 1.9.3dev is now using the 2-clause BSD License, not the
    GPLv2.  Do not mislead people into thinking we will switch to
    any BSD License, we won't.

commit 4cfb64f10784498b9625bbbd3364231710bc7c36
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Feb 10 13:41:32 2011 -0800

    Revert "test_helper: simplify random port binding"

    This causes conflicts with ports clients may use in
    the ephemeral range since those do not hold FS locks.

    This reverts commit e597e594ad88dc02d70f7d3521d0d3bdc23739bb.

    Conflicts:

     test/test_helper.rb

commit 6dd90cb902f43b32b0db204484d5e3df79ec0d0c
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Feb 10 13:34:58 2011 -0800

    remove unnecessary &block usage

    They needlessly allocate Proc objects

commit 1fd1234ca5ba3d84d2182c38b37322bd55f08882
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Feb 7 16:09:53 2011 -0800

    test_helper: avoid FD leakage/waste

    No need to unnecessarily leave file descriptor open.

commit 6ffc294aac4735127ac9455266623aaa3603e9c1
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Feb 4 13:06:30 2011 -0800

    unicorn 3.4.0 - for people with very big LANs

    * IPv6 support in the HTTP hostname parser and configuration
      language.  Configurator syntax for "listen" addresses should
      be the same as nginx.  Even though we support IPv6, we will
      never support non-LAN/localhost clients connecting to Unicorn.

    * TCP_NOPUSH/TCP_CORK is enabled by default to optimize
      for bandwidth usage and avoid unnecessary wakeups in nginx.

    * Updated KNOWN_ISSUES document for bugs in recent Ruby 1.8.7
      (RNG needs reset after fork) and nginx+sendfile()+FreeBSD 8.

    * examples/nginx.conf updated for modern stable versions of nginx.

    * "Status" in headers no longer ignored in the response,
      Rack::Lint already enforces this so we don't duplicate
      the work.

    * All tests pass under Ruby 1.9.3dev

    * various bugfixes in the (mostly unused) ExecCGI class that
      powers http://bogomips.org/unicorn.git

commit 3df8a197320b8a9e8a6413dcd04613db0558d90a
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Feb 4 13:04:39 2011 -0800

    bump dependency on kgio

    This is needed for IPv6 support, and 2.2.0 is nicer
    all around for Rainbows! users.  Updates wrongdoc
    while we're at it, too.

commit 1045faa0f9e94b13ee0281b7968b72d6f50dd5bf
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Feb 3 13:53:18 2011 -0800

    test/unit: fix tests under Ruby 1.9.3dev

    Ugh, one day I'll clean them up, one day...

commit 9e7a8114fb0fcc56b475d17f158eaa5b7f1f7bdd
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Feb 2 17:37:22 2011 -0800

    Fix Ruby 1.9.3dev warnings

    for i in `git ls-files '*.rb'`; do ruby -w -c $i; done

commit e597e594ad88dc02d70f7d3521d0d3bdc23739bb
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Feb 2 16:54:07 2011 -0800

    test_helper: simplify random port binding

    Duh...

commit 314680327b95c0dc5e11be45a6343ca2a18ee447
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Feb 2 16:27:30 2011 -0800

    socket_helper: cleanup leftover debugging statement

    Oops!  Ugh, not my day...

commit e0160a18ef5c4592d1ac5ff24ba8ae0fd703057c
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Feb 2 15:34:33 2011 -0800

    socket_helper: export tcp_name as a module_function

    Oops!

commit 87fd86ef22b6b80fa75dd8e50f53a4e62e8339f7
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Feb 2 15:22:02 2011 -0800

    allow binding on IPv6 sockets with listen "[#{addr}]:#{port}"

    This is much like how nginx does it, except we always require a
    port when explicitly binding to IPv6 using the "listen"
    directive.  This also adds support to listen with an
    address-only, which can be useful to Rainbows! users.

commit d140e7b1ff44b06bc54c2b790d06e9c7325503fe
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Feb 2 14:45:57 2011 -0800

    http: parser handles IPv6 bracketed IP hostnames

    Just in case we have people that don't use DNS, we can support
    folks who enter ugly IPv6 addresses...

    IPv6 uses brackets around the address to avoid confusing
    the colons used in the address with the colon used to denote
    the TCP port number in URIs.

commit 24f8ef5f385e38954a5582fb2e8cd9d12fbf7d20
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jan 31 16:14:46 2011 -0800

    force socket options to defaults if unspecified

    This reduces surprise when people (correctly) believe
    removing an option from the config file will return
    things back to our internal defaults.

commit c28e2610cfc70e89a0ffabe18356d148afe98bfc
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jan 31 15:51:30 2011 -0800

    enable TCP_NOPUSH/TCP_CORK by default

    It's actually harmless since Unicorn only supports "fast"
    applications that do not trickle, and we don't do keepalive so
    we'll always flush-on-close.  This should reduce wakeups on the
    nginx proxy server if nginx is over TCP.  Mongrel 1.x had
    TCP_CORK enabled by default, too.

commit e3420e0ae1f3c38f125010134d2cdeb22c6fa64e
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jan 31 15:50:37 2011 -0800

    test_upload: check size in server

    The client may not get a proper response with TCP_CORK enabled

commit f4caf6b6bdea902abaadd3c04b2af94f056c4ff1
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Jan 28 18:11:26 2011 +0000

    KNOWN_ISSUES: document broken RNG+fork in newer Ruby 1.8

    Reported by: ghazel@gmail.com

    ref: <AANLkTimTpPATTpkoD2EYA2eM1+5OzCN=WxnCygQmJdhn@mail.gmail.com>

commit 09afcf2ce9fc89d77b6b282bbf00a78c73741a4b
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jan 25 13:58:29 2011 -0800

    examples/nginx.conf: use try_files directive

    This feature is in nginx 0.7.x and 0.8.x and optimized
    better than the "if" directive in nginx.conf

    ref: http://wiki.nginx.org/Pitfalls
    ref: http://wiki.nginx.org/IfIsEvil

commit 1ca83b055375ab7e72d383ffd0f36f70c07d9e92
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jan 25 13:56:39 2011 -0800

    examples/nginx: avoid unnecessary listen directive

    There's no need to use listen unless you use non-default port or
    can enable "deferred" or "httpready" (which you usually want).

commit fb1f33aecc7102fb5c10e27c65b9b27cf249415f
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jan 25 13:42:53 2011 -0800

    KNOWN_ISSUES: split old stuff into its own section

    Ruby 1.9.1, Sinatra 0.3.x, and Rails 2.3.2 are not in
    common use anymore (at least we don't think).

commit 8ac0ae45a04f5f121f323c182403ef6eb0d8aa18
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jan 25 13:30:21 2011 -0800

    KNOWN_ISSUES: FreeBSD 8 and sendfile can be buggy

    Reported by Alexey Bondar.

commit d770d09dfd9e5d7148379c58cdf9a020cbdc63b6
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Jan 21 12:28:39 2011 -0800

    git.bogomips.org => bogomips.org

    bogomips.org is slimming down and losing URL weight :)

commit d385bc4f3ed7b783b7414f5d34299bd2bf242fe6
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Jan 21 04:01:01 2011 +0000

    exec_cgi: handle Status header in CGI response

    We no longer blindly return 200 if the CGI returned another error
    code.  We also don't want two Status headers in our output since we
    no longer filter it out.
    (cherry picked from commit 6cca8e61c66c1c2a8ebe260813fa83e44530a768)

commit 6cca8e61c66c1c2a8ebe260813fa83e44530a768
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Jan 21 04:01:01 2011 +0000

    exec_cgi: handle Status header in CGI response

    We no longer blindly return 200 if the CGI returned another error
    code.  We also don't want two Status headers in our output since we
    no longer filter it out.

commit c4d77de381c40cf315e6f84791e3fb634bc10675
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Jan 21 04:01:02 2011 +0000

    exec_cgi: make output compatible with IO.copy_stream

    Rainbows! can then use this to bypass luserspace given
    the correct offset is set before hand and the file
    is unlinked.

commit 4150a398a48b9bca96aa623380161229ac0f8622
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jan 19 19:10:25 2011 -0800

    configurator: undocument trust_x_forwarded_for

    This may not be supported in the future...

commit ec400a537a0947796e108f3593721289661b49dc
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Jan 7 10:14:46 2011 -0800

    http_response: do not skip Status header set by app

    Rack::Lint already stops apps from using it.  If a developer
    insists on it, then users who inspect their HTTP headers can
    point and laugh at them for not using Rack::Lint!

commit 5ebd22a9d28fc96c69c09b695d99c1f173ce5a67
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Jan 6 15:46:56 2011 -0800

    unicorn 3.3.1 - one minor, esoteric bugfix

    We now close the client socket after closing the response body.
    This does not affect most applications that run under Unicorn,
    in fact, it may not affect any.

    There is also a new v1.1.6 release for users who do not use
    kgio.

commit 3587edb6e88ebe5c24cdde090ba8dd98de493d63
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Jan 6 15:40:54 2011 -0800

    unicorn 1.1.6 - one minor, esoteric bugfix

    We now close the client socket after closing the response body.
    This does not affect most applications that run under Unicorn,
    in fact, it may not affect any.

commit b7a0074284d33352bb9e732c660b29162f34bf0e
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jan 5 23:05:05 2011 -0800

    close client socket after closing response body

    Response bodies may capture the block passed to each
    and save it for body.close, so don't close the socket
    before we have a chance to call body.close

    (cherry picked from commit b72a86f66c722d56a6d77ed1d2779ace6ad103ed)

    Conflicts:

     lib/unicorn/http_server.rb
     test/unit/test_response.rb

commit b72a86f66c722d56a6d77ed1d2779ace6ad103ed
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jan 5 22:39:03 2011 -0800

    close client socket after closing response body

    Response bodies may capture the block passed to each
    and save it for body.close, so don't close the socket
    before we have a chance to call body.close

commit 1b69686fd28347eb5c071a9b76e2939bca424f04
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jan 5 15:26:17 2011 -0800

    unicorn 3.3.0 - minor optimizations

    Certain applications that already serve hundreds/thousands of requests a
    second should experience performance improvements due to
    Time.now.httpdate usage being removed and reimplemented in C.

    There are also minor internal changes and cleanups for Rainbows!

commit 62c844e343978f233e4f2567fb344411c39e263c
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jan 5 14:06:00 2011 -0800

    http_parser: add clear method, deprecate reset

    But allows small optimizations to be made to avoid
    constant/instance variable lookups later :)

commit bd397ee11b60243ef15c5558c4309e46e27e6192
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jan 5 11:41:36 2011 -0800

    http_response: simplify the status == 100 comparison

    No need to preserve the response tuplet if we're just
    going to unpack it eventually.

commit 062227e00f7ec589c3906a8bcd22dd7194268266
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jan 5 11:32:44 2011 -0800

    http_server: remove unnecessary 'nil'

commit 3f5abce2b1c071f9aed4cdd0951331d7f037c4b1
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jan 5 11:16:21 2011 -0800

    socket_helper: expose more defaults in DEFAULTS hash

    This will allow Rainbows! to set :tcp_nodelay=>true
    and possibly other things in the future.

commit d100025759450dd1cbeccd1a3e44c46921bba26b
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jan 4 17:50:51 2011 -0800

    http_response: implement httpdate in C

    This can return a static string and be significantly
    faster as it reduces object allocations and Ruby method
    calls for the fastest websites that serve thousands of
    requests a second.

    It assumes the Ruby runtime is single-threaded, but that
    is the case of Ruby 1.8 and 1.9 and also what Unicorn
    is all about.  This change is safe for Rainbows! under 1.8
    and 1.9.

commit 6183611108c571dbed29dfe2854b9f06757fd27f
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Dec 30 02:32:41 2010 +0000

    http_response: do not account for $, being set

    It's a minor garbage reduction, but nobody uses "$,", and
    if they did, they'd break things in the Ruby standard library
    as well as Rack, so let anybody who uses "$," shoot themselves
    in the foot.

commit 3a2634f3f68f6b8ea1aa7b2bb5944884bbfa8017
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Dec 30 02:30:19 2010 +0000

    tests: test parser works with keepalive_requests=0

    We use this in Rainbows! to disable keepalive in certain
    configurations.

commit 2c57f59172c45a3ca52dbddfb3f12c1bc70cbfd6
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Dec 29 16:45:13 2010 +0000

    http: remove unnecessary dir_config statement

    We do not link against any external libraries

commit 2eb2c74aeb0da1d3f6f575ff8e05715e8c5ed85e
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Dec 26 08:10:35 2010 +0000

    Rakefile: fix fm_update task

    Oops!

commit 6f7a3958c1544c1034ecf8b1ccfdd9dabd171fd2
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Dec 26 08:03:23 2010 +0000

    unicorn 3.2.1 - parser improvements for Rainbows!

    There are numerous improvements in the HTTP parser for
    Rainbows!, none of which affect Unicorn-only users.

    The kgio dependency is incremented to 2.1: this should avoid
    ENOSYS errors for folks building binaries on newer Linux
    kernels and then deploying to older ones.

    There are also minor documentation improvements, the website
    is now JavaScript-free!

    (Ignore the 3.2.0 release, I fat-fingered some packaging things)

commit dece59f577d04f3735ccbeb190d26ce2c371d5f9
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Dec 26 07:58:38 2010 +0000

    gemspec: fix gemspec build

    Oops

commit 03a43d9dc23c21f1c1a1baa2f29eab1157f4a076
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Dec 26 07:44:54 2010 +0000

    unicorn 3.2.0 - parser improvements for Rainbows!

    There are numerous improvements in the HTTP parser for
    Rainbows!, none of which affect Unicorn-only users.

    The kgio dependency is incremented to 2.1: this should avoid
    ENOSYS errors for folks building binaries on newer Linux
    kernels and then deploying to older ones.

    There are also minor documentation improvements, the website
    is now JavaScript-free!

commit 51f30bf454e82f33443fe4a7f2e0496103c5ec6f
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Dec 26 07:29:38 2010 +0000

    http_server: remove needless lambda

    We can just use a begin block at startup, this also makes life
    easier on RDoc.

commit 45f0220ab13ec67150b3226a83437356f141eefd
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Dec 26 07:21:34 2010 +0000

    http_response: remove TODO item

    An unconfigured Rainbows! (e.g. Rainbows! { use :Base }) already
    does keepalive and supports only a single client per-process.

commit 87b1cf4eef3d717d345d730f28ddaad319f2fb2f
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Dec 26 06:23:28 2010 +0000

    http: #keepalive? and #headers? work after #next?

    We need to preserve our internal flags and only clear them on
    HttpParser#parse.  This allows the async concurrency models in
    Rainbows! to work properly.

commit c348223a045abb295b8c9d7dbf189264bc3a17c3
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Dec 26 03:38:13 2010 +0000

    bump kgio dependency to ~> 2.1

    The kgio 2.x series will maintain API compatibility
    until 3.x, so it's safe to use any 2.x release.

commit f970d87f9c0a4479a59685920a96c4d2fb2315e1
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Dec 25 19:30:12 2010 +0000

    http: fix typo in xftrust unit test

    Oops

commit f62ef19a4aa3d3e4ce1aa37a499907ff776a8964
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Dec 24 08:37:22 2010 +0000

    doc: use wrongdoc for documentation

    wrongdoc factors out a bunch of common code from this
    project into its own and removes JavaScript from RDoc
    to boot.

commit 210e5cc3109af248d29f1d722076ff8ecd1fde2d
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Dec 23 18:10:00 2010 +0000

    TODO: remove item for TeeInput performance

    Disabling TeeInput is possible now, so the filesystem
    is no longer a bottleneck :>

commit 5ffaf7df44425766a60d632881a2debd83605b52
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Dec 21 04:45:30 2010 +0000

    rdoc: include tag subject in NEWS file

    It's more useful this way

commit 3a67490b10ca38d7d3d30c6917d75ce0e093706b
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Dec 21 01:58:32 2010 +0000

    rdoc: enable webcvs feature for cgit links

    Hopefully this gets more people reading our source.

commit ee29a14cb383839cf5dcef6fe442558f46a1615b
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Dec 21 01:30:35 2010 +0000

    configurator: RDoc cleanups and improvements

    This is the most important part of Unicorn documentation
    for end users.

commit 1f5bac15cd8e4393c6da98eb7bb4532133dc6259
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Dec 21 01:28:23 2010 +0000

    http: hook up "trust_x_forwarded" to configurator

    More config bloat, sadly this is necessary for Rainbows! :<

commit bf64b9aa855cf3590a4d5b4eca853aef33ba90cc
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Dec 20 22:05:50 2010 +0000

    http: allow ignoring X-Forwarded-* for url_scheme

    Evil clients may be exposed to the Unicorn parser via
    Rainbows!, so we'll allow people to turn off blindly
    trusting certain X-Forwarded* headers for "rack.url_scheme"
    and rely on middleware to handle it.

commit 8be3668c11cf721960581e325b481c105e8f3c89
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Dec 20 20:49:21 2010 +0000

    http: refactor finalize_header function

    rack.url_scheme handling and SERVER_{NAME,PORT} handling
    each deserve their own functions.

commit b740269f121167c4f93e3a0e155e05422f6e80ff
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Dec 20 19:40:57 2010 +0000

    http: update setting of "https" for rack.url_scheme

    The first value of X-Forwarded-Proto in rack.url_scheme should
    be used as it can be chained.  This header can be set multiple
    times via different proxies in the chain, but consider the first
    one to be valid.

    Additionally, respect X-Forwarded-SSL as it may be passed with
    the "on" flag instead of X-Forwarded-Proto.

    ref: rack commit 85ca454e6143a3081d90e4546ccad602a4c3ad2e
         and 35bb5ba6746b5d346de9202c004cc926039650c7

commit 7ad59e0c48e12febae2a2fe86b76116c05977c6f
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Dec 20 00:14:52 2010 +0000

    http: support keepalive_requests directive

    This limits the number of keepalive requests of a single
    connection to prevent a single client from monopolizing server
    resources.  On multi-process servers (e.g. Rainbows!) with many
    keepalive clients per worker process, this can force a client to
    reconnect and increase its chances of being accepted on a
    less-busy worker process.

    This directive is named after the nginx directive which
    is identical in function.

commit 82ea9b442a9edaae6dc3b06a5c61035b2c2924c9
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Dec 19 18:47:23 2010 +0000

    http: delay clearing env on HttpParser#next?

    This allows apps/middlewares on Rainbows! that rely on env in
    the response_body#close to hold onto the env.

commit 39f264173717287eda70910e7a24fbafd21a4a7e
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Dec 10 05:45:14 2010 +0800

    unicorn 3.1.0 - client_buffer_body_size tuning

    This release enables tuning the client_buffer_body_size to raise
    or lower the threshold for buffering request bodies to disk.
    This only applies to users who have not disabled rewindable
    input.  There is also a TeeInput bugfix for uncommon usage
    patterns and Configurator examples in the FAQ should be fixed

commit 71716672752e573ff15002aaefd6e8ba8c6b6cb6
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Dec 9 03:39:03 2010 +0000

    allow client_buffer_body_size to be tuned

    Since modern machines have more memory these days and
    clients are sending more data, avoiding potentially slow
    filesystem operations for larger uploads can be useful
    for some applications.

commit 9d80b009a3cb795530ad23263f4eb525880e79dc
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Dec 8 23:53:25 2010 +0000

    configurator: ensure examples in FAQ still work

    This has been broken since 2.0.x
    Internal cleanups sometimes have unintended consequences :<

commit 3b2fc62dadd3c90038c168849b33c4ca6df058da
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Dec 8 22:02:45 2010 +0000

    tee_input: fix accounting error on corked requests

    In case a request sends the header and buffer as one packet,
    TeeInput relying on accounting info from StreamInput is harmful
    as StreamInput will buffer in memory outside of TeeInput's
    control.

    This bug is triggered by calling env["rack.input"].size or
    env["rack.input"].rewind before to read.

commit 52f55529293e466a77090691d1fe06a7933c74a1
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Dec 3 00:31:15 2010 +0000

    unicorn 3.0.1 - one bugfix for Rainbows!

    ...and only Rainbows!  This release fixes HTTP pipelining for
    requests with bodies for users of synchronous Rainbows!
    concurrency models.

    Since Unicorn itself does not support keepalive nor pipelining,
    Unicorn-only users need not upgrade.

commit c32488dcc69181d2e10b82645ef87c8b8b88b8e1
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Dec 2 05:30:39 2010 +0000

    stream_input: avoid trailer parsing on unchunked requests

    It screws up keepalive for Rainbows! requests with a body.

commit dee9e6432c8eb5269a19c4c6b66ab932fdeda34f
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Nov 20 10:14:19 2010 +0800

    unicorn 3.0.0 - disable rewindable input!

    Rewindable "rack.input" may be disabled via the
    "rewindable_input false" directive in the configuration file.
    This will violate Rack::Lint for Rack 1.x applications, but can
    reduce I/O for applications that do not need a rewindable
    input.

    This release updates us to the Kgio 2.x series which should play
    more nicely with other libraries and applications.  There are
    also internal cleanups and improvements for future versions of
    Rainbows!

    The Unicorn 3.x series supercedes the 2.x series
    while the 1.x series will remain supported indefinitely.

commit ad268cea66c2b91538dd60fc7f945348bb24214d
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Nov 20 08:07:12 2010 +0800

    tests: stream_input tests for mixed gets/read calls

    Some apps may do them, so make sure we do them correctly.

commit cd315e5a20b17d29679fb22b4e2ab44cd6d0edeb
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Nov 20 07:45:57 2010 +0800

    stream_input: use String#sub! instead of gsub!

    There's no difference because of the \A anchor, but sub!
    is doesn't loop so it's simpler.

commit 5bc239fd154a7eaebeb024394f8e0b507bbf4c5a
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Nov 19 20:51:57 2010 +0000

    stream_input: small cleanups and fixes

    No need to accept any number of args, that could hide bugs in
    applications that could give three or more arguments.  We also
    raise ArgumentError when given a negative length argument to
    read.

commit d12e10ea88c7adeb97094e4b835201e4c2ce52ab
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Nov 19 01:55:07 2010 +0000

    tests: isolate kgio 2.0.0 instead of the prerelease

    Same thing, but might as well make it more obvious.

commit 507f228864574437e610e57d20d3b77c1e6d0e41
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Nov 19 08:04:14 2010 +0800

    unicorn 3.0.0pre2 - less bad than 2.x or 3.0.0pre1!

    This release updates us to the Kgio 2.x series which should play
    more nicely with other applications.  There are also bugfixes
    from the 2.0.1 release and a small bugfix to the new StreamInput
    class.

    The Unicorn 3.x series will supercede the 2.x series
    while the 1.x series will remain supported indefinitely.

commit 238c98ec4c353bb14671ab543c21baa068b7e3f2
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Nov 19 08:02:45 2010 +0800

    update to kgio 2.x series

    The Kgio 2.x API is less brain-damaged than the 1.3.x series
    was, and should solve API-compatibility problems with
    dalli 0.11.1.

commit 86d2a22ffdc4bf9f16e1870f9db9a2ff84760c7c
Merge: eda4086 268c2ec
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Nov 18 07:48:12 2010 +0800

    Merge branch '2.0.x-stable'

    * 2.0.x-stable:
      unicorn 2.0.1 - fix errors in error handling
      tests: add parser error test from Rainbows!
      http_server: fix HttpParserError constant resolution
      t0012: fix race condition in reload

commit 268c2ec5fef2630b0626b848be9d6ec46d360ddb
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Nov 18 07:42:40 2010 +0800

    unicorn 2.0.1 - fix errors in error handling

    This release fixes errors in our own error handling,
    causing certain errors to not be logged nor responded
    to correctly.

    Eric Wong (3):
          t0012: fix race condition in reload
          http_server: fix HttpParserError constant resolution
          tests: add parser error test from Rainbows!

commit 859593b418db7e5fd93295a7a8b15de56cc4f6dd
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Nov 18 07:44:47 2010 +0800

    tests: add parser error test from Rainbows!

    This will help ensure we trap our own errors properly
    in the future.
    (cherry picked from commit eda408603edc51f10f17217c767b31a45eb6c627)

commit eda408603edc51f10f17217c767b31a45eb6c627
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Nov 18 07:44:47 2010 +0800

    tests: add parser error test from Rainbows!

    This will help ensure we trap our own errors properly
    in the future.

commit 3362dc51934c15fd944748e55ba4a470cc60d27d
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Nov 18 07:36:27 2010 +0800

    stream_input: read with zero length returns ''

    Any calls to read with an explicit zero length now returns an
    empty string.  While not explicitly specified by Rack::Lint,
    this is for compatibility with StringIO and IO methods which
    are common in other web servers.

commit a6d96b61c2d81af077d55f43121c8472aa095447
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Nov 17 11:20:02 2010 -0800

    http_server: fix HttpParserError constant resolution

    "Unicorn" is no longer in the default constant resolution
    namespace.
    (cherry picked from commit 390e351dd1283d4c80a12b744b1327fff091a141)

commit 390e351dd1283d4c80a12b744b1327fff091a141
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Nov 17 11:20:02 2010 -0800

    http_server: fix HttpParserError constant resolution

    "Unicorn" is no longer in the default constant resolution
    namespace.

commit 01ae51fa5fda40a63277b0d1189925fb209c75a9
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Nov 18 02:48:41 2010 +0800

    add missing test files

    oops :x

commit 958c1f81a2c570f4027d8fe2dd4f5c40ac7ed430
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Nov 16 16:00:07 2010 -0800

    unicorn 3.0.0pre1

    Rewindable "rack.input" may be disabled via the
    "rewindable_input false" directive in the configuration file.
    This will violate Rack::Lint for Rack 1.x applications, but
    can reduce I/O for applications that do not need it.

    There are also internal cleanups and enhancements for future
    versions of Rainbows!

    Eric Wong (11):
          t0012: fix race condition in reload
          enable HTTP keepalive support for all methods
          http_parser: add HttpParser#next? method
          tee_input: switch to simpler API for parsing trailers
          switch versions to 3.0.0pre
          add stream_input class and build tee_input on it
          configurator: enable "rewindable_input" directive
          http_parser: ensure keepalive is disabled when reset
          *_input: make life easier for subclasses/modules
          tee_input: restore read position after #size
          preread_input: no-op for non-rewindable "rack.input"

commit 431de671a29b312bd19e615bd4bd99228b0c8b13
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Nov 16 13:51:24 2010 -0800

    preread_input: no-op for non-rewindable "rack.input"

    We may get "rack.input" objects that are not rewindable
    in the future, so be prepared for those and do no harm.

commit d41e5364bde413e195df8803845f7232718325a6
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Oct 28 09:03:21 2010 +0000

    t0012: fix race condition in reload

    We need to ensure the old worker is reaped before sending
    new requests intended for the new worker.
    (cherry picked from commit b45bf946545496cf8d69037113533d7a58ce7e20)

commit 17a734a9f6ccea8c969a574f09b5d8dd3d568a9c
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Nov 13 16:41:10 2010 +0800

    tee_input: restore read position after #size

    It's possible for an application to call size after it has read
    a few bytes/lines, so do not screw up a user's read offset when
    consuming input.

commit 855c02a9720a17854a2f1c715efbe502cdba54e2
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Nov 12 10:59:14 2010 +0800

    *_input: make life easier for subclasses/modules

    Avoid having specific knowledge of internals in TeeInput
    and instead move that to StreamInput when dealing with
    byte counts.  This makes things easier for Rainbows! which
    will need to extends these classes.

commit 3b544fb2c0e4a1e14a7bcb752a8af9819b5aaeb2
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Nov 11 07:31:01 2010 +0800

    http_parser: ensure keepalive is disabled when reset

    We'll need this in Rainbows!

commit a89ccf321224f3248ddd00bb0edb320311604e4e
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Nov 11 02:16:50 2010 +0800

    configurator: enable "rewindable_input" directive

    This allows users to override the current Rack spec and disable
    the rewindable input requirement.  This can allow applications
    to use less I/O to minimize the performance impact when
    processing uploads.

commit 7d44b5384758aeddcb49d7606a9908308df7c698
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Nov 11 01:13:12 2010 +0800

    add stream_input class and build tee_input on it

    We will eventually expose a Unicorn::StreamInput object as
    "rack.input" for Rack 2.x applications.  StreamInput allows
    applications to avoid buffering input to disk, removing the
    (potentially expensive) rewindability requirement of Rack 1.x.

    TeeInput is also rewritten to build off StreamInput for
    simplicity.  The only regression is that TeeInput#rewind forces
    us to consume an unconsumed stream before returning, a
    negligible price to pay for decreased complexity.

commit 1493af7cc23afecc8592ce44f5226476afccd212
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Nov 11 07:17:19 2010 +0800

    switch versions to 3.0.0pre

    Here are major, incompatible internal API changes.

commit 8edcc3f9e1be9113685e61b9a83994a02d37c768
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Nov 7 10:21:43 2010 +0800

    tee_input: switch to simpler API for parsing trailers

    Not that anybody uses trailers extensively, but it's
    good to know it's there.

commit 60a9ec94f1f738f881e67f0a881c44c104f07c04
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Nov 6 10:30:44 2010 +0800

    http_parser: add HttpParser#next? method

    An easy combination of the existing HttpParser#keepalive? and
    HttpParser#reset methods, this makes it easier to implement
    persistence.

commit 7987e1a4001491f8a494f3926037f8cbee713263
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Sep 3 01:48:24 2010 +0000

    enable HTTP keepalive support for all methods

    Yes, this means even POST/PUT bodies may be kept alive,
    but only if the body (and trailers) are fully-consumed.

commit b45bf946545496cf8d69037113533d7a58ce7e20
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Oct 28 09:03:21 2010 +0000

    t0012: fix race condition in reload

    We need to ensure the old worker is reaped before sending
    new requests intended for the new worker.

commit 5ffc1f81c3f56d17ff3369f7514e978754840c29
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Oct 27 23:32:24 2010 +0000

    unicorn 2.0.0 - mostly internal cleanups

    Despite the version number, this release mostly features
    internal cleanups for future versions of Rainbows!.  User
    visible changes include reductions in CPU wakeups on idle sites
    using high timeouts.

    Barring possible portability issues due to the introduction of
    the kgio library, this release should be ready for all to use.
    However, 1.1.x (and possibly 1.0.x) will continue to be
    maintained.  Unicorn 1.1.5 and 1.0.2 have also been released
    with bugfixes found during development of 2.0.0.

commit a3b08e9411f1d958e2264329c67972541424ac35
Merge: 0692e8c 7f3ebe9
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Oct 27 23:31:41 2010 +0000

    Merge branch '1.1.x-stable'

    * 1.1.x-stable:
      unicorn 1.1.5
      doc: stop using deprecated rdoc CLI options
      gemspec: depend on Isolate 3.0.0 for dev
      configurator: reloading with unset values restores default
      configurator: use "__send__" instead of "send"
      Rakefile: capture prerelease tags
      Rakefile: don't post freshmeat on empty changelogs
      fix delays in signal handling

commit 0692e8cb10dd27275f2de794ed6eba62e9918431
Merge: 4d493d8 ea975cc
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Oct 27 23:31:38 2010 +0000

    Merge branch 'maint'

    * maint:
      unicorn 1.0.2
      doc: stop using deprecated rdoc CLI options
      gemspec: depend on Isolate 3.0.0 for dev
      configurator: reloading with unset values restores default
      configurator: use "__send__" instead of "send"
      Rakefile: capture prerelease tags
      Rakefile: don't post freshmeat on empty changelogs
      fix delays in signal handling
      SIGTTIN works after SIGWINCH

commit 4d493d8ad203d7f13ac56b7d6ba2b3aaa481cbd2
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Oct 27 16:26:28 2010 -0700

    examples/unicorn.conf: add a note about throttling signals

    Sending the same signal faster than the receiver can process
    means signals can get lost.

commit ea975cc3e6d2e6ac9c971c8cbda712486ec63c2a
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Oct 27 23:11:09 2010 +0000

    unicorn 1.0.2

    This is the latest maintenance release of the 1.0.x series.
    All users are encouraged to upgrade to 1.1.x stable series
    and report bugs there.

    Shortlog of changes since 1.0.1:

    Eric Wong (8):
          SIGTTIN works after SIGWINCH
          fix delays in signal handling
          Rakefile: don't post freshmeat on empty changelogs
          Rakefile: capture prerelease tags
          configurator: use "__send__" instead of "send"
          configurator: reloading with unset values restores default
          gemspec: depend on Isolate 3.0.0 for dev
          doc: stop using deprecated rdoc CLI options

commit 856959cc0b2dbc96f115d26672d0f5b73ae79914
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Oct 27 23:07:42 2010 +0000

    doc: stop using deprecated rdoc CLI options

    -N and -a switches no longer exist in rdoc 2.5
    (cherry picked from commit 054c7df93db61839648925cfd881ae880709a210)

commit 04f0f44f9bd0907fcff1e2cdc59f7e84d4110539
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Oct 27 23:08:51 2010 +0000

    gemspec: depend on Isolate 3.0.0 for dev

    No reason to not use the latest and greatest!
    (cherry picked from commit 570a57c07fd8c3d24b7337637e0dd30136b3a11a)

    Conflicts:

     unicorn.gemspec

commit 054c7df93db61839648925cfd881ae880709a210
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Oct 27 23:07:42 2010 +0000

    doc: stop using deprecated rdoc CLI options

    -N and -a switches no longer exist in rdoc 2.5

commit 570a57c07fd8c3d24b7337637e0dd30136b3a11a
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Oct 27 23:06:45 2010 +0000

    gemspec: depend on Isolate 3.0.0 for dev

    No reason to not use the latest and greatest!

commit 2dd4a89d5726e13b962c1e287d84a6c30f5dd46c
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Oct 27 13:51:12 2010 -0700

    configurator: reloading with unset values restores default

    If a configuration directive is set at startup and later
    unset, it correctly restores the original default value
    as if it had never been set in the first place.

    This applies to the majority of the configuration values with
    a few exceptions:

    * This only applies to stderr_path and stdout_path when
      daemonized (the usual case, they'll be redirected to
      "/dev/null").  When NOT daemonized, we cannot easily redirect
      back to the original stdout/stderr destinations.

    * Unsetting working_directory does not restore the
      original working directory where Unicorn was started.
      As far as we can tell unsetting this after setting it is
      rarely desirable and greatly increases the probability of
      user error.
    (cherry picked from commit 51b2b90284000aee8d79b37a5406173c45ae212d)

commit 5e672c48d8a3555e4a01f653fb2e0b3556087737
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Oct 27 12:46:46 2010 -0700

    configurator: use "__send__" instead of "send"

    It's less ambiguous since this is a network server after all.
    (cherry picked from commit f62c5850d7d17d7b5e301a494f8bdf5be3674411)

commit 51b2b90284000aee8d79b37a5406173c45ae212d
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Oct 27 13:51:12 2010 -0700

    configurator: reloading with unset values restores default

    If a configuration directive is set at startup and later
    unset, it correctly restores the original default value
    as if it had never been set in the first place.

    This applies to the majority of the configuration values with
    a few exceptions:

    * This only applies to stderr_path and stdout_path when
      daemonized (the usual case, they'll be redirected to
      "/dev/null").  When NOT daemonized, we cannot easily redirect
      back to the original stdout/stderr destinations.

    * Unsetting working_directory does not restore the
      original working directory where Unicorn was started.
      As far as we can tell unsetting this after setting it is
      rarely desirable and greatly increases the probability of
      user error.

commit f62c5850d7d17d7b5e301a494f8bdf5be3674411
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Oct 27 12:46:46 2010 -0700

    configurator: use "__send__" instead of "send"

    It's less ambiguous since this is a network server after all.

commit 928a88d5419210380078a2e141cb64d308719295
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Oct 6 01:27:45 2010 +0000

    Rakefile: capture prerelease tags

    Since we do those, now.
    (cherry picked from commit 1d1a2b1bd5bdd89f774f19bf8ad24c2f5f8a2d4c)

commit 74dec350d93b88c0a5bd792239671097901e2393
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Oct 27 19:32:55 2010 +0000

    Rakefile: don't post freshmeat on empty changelogs

    We don't want to flood or monopolize freshmeat.
    (cherry picked from commit 1ad510d645e0c84c8d352ac0deaeefa75240ea94)

commit c7feb7e10a937df2dc72f53aa6cc1ebda4c1cd3b
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Oct 27 12:43:14 2010 -0700

    configurator: switch to normal class

    No point in using a Struct for (1.8) space-efficiency
    if there's only one of them.

commit 10037f2aabb3fab4296fc90c615e7caa9f4a9b53
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Oct 27 01:44:33 2010 +0000

    fix delays in signal handling

    There is no need to loop in the master_sleep method at all, as
    the rest of the code is designed to function even on interrupted
    sleeps.

    This change is included as part of a larger cleanup in master.
    (commit bdc79712e5ac53d39c51e80dfe50aff950e5053f)

commit 514af94321ef0fab74894e517792c4a9709d76f5
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Oct 27 00:36:25 2010 +0000

    reduce master process wakeups

    To reduce CPU wakeups and save power during off hours,
    we can precalculate a safe amount to sleep before killing
    off idle workers.

commit 7ef05ec23b06f06e9d4bb1cf45d1907b4eeacb80
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Oct 26 23:19:09 2010 +0000

    master: remove limit on queued signals

    If a moronic sysadmin is sending too many signals, just let them
    do it.  It's likely something is terribly wrong when the server
    is overloaded with signals, so don't try to protect users from
    it.  This will also help in case where TTOU signals are sent too
    quickly during shutdown, although sleeping between kill(2)
    syscalls is always a good idea because of how non-real-time
    signals are delivered.

commit 2243c97edf80d635871bc678794f07d6c1d033c2
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Oct 9 00:03:43 2010 +0000

    unicorn 2.0.0pre3 - more small fixes

    There is a new Unicorn::PrereadInput middleware to which allows
    input bodies to be drained off the socket and buffered to disk
    (or memory) before dispatching the application.

    HTTP Pipelining behavior is fixed for Rainbows!  There
    are some small Kgio fixes and updates for Rainbows!
    users as well.

commit 6eb46e422f4b2ba98c795fca5e18e7262c0c688e
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Oct 8 23:44:23 2010 +0000

    add PrereadInput middleware to get around TeeInput

    This may be useful for some apps that wish to drain the body
    before acquiring an app-wide lock.  Maybe it's more useful
    with Rainbows!...

commit 9be78606355d4a0ad4ea59316ab2ce998c5b9a12
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Oct 8 22:58:59 2010 +0000

    bump kgio dependency

    kgio 1.3.1 fixes some cases for zero-length reads.

commit f20274e84169e18a73a5cd341b6bc31b625b83ce
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Oct 8 08:49:22 2010 +0000

    build: automatically call isolate on updates

    Automation is nice, the makefile needs some cleanup

commit 861481436b933bf4b8d647c43191c701651f16e4
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Oct 8 01:34:37 2010 -0700

    bump kgio dependency to 1.3.0

    There was a backwards-incompatible API change,
    but that didn't even affect us.

commit c9950692f44bd91af089794664dc56a446668004
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Oct 7 18:42:15 2010 -0700

    gemspec: bump kgio version

    kgio 1.2.1 works around a bug for some *BSDs, some of which are
    popular platforms for developers.

commit e99178ef89eca9e46b73484aaf9733259dac9dca
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Oct 7 08:12:36 2010 +0000

    http: fix behavior with pipelined requests

    We cannot clear the buffer between requests because
    clients may send multiple requests that get taken in
    one read()/recv() call.

commit eb5ba488422020568e5ccf650891d7fccce7238f
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Oct 7 07:22:58 2010 +0000

    unicorn 2.0.0pre2 - releases are cheap

    Internal changes/cleanups for Rainbows!

commit 4c48b520786807487f7f76d709b0dbcee63c4d0c
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Oct 7 06:59:05 2010 +0000

    http: remove unnecessary rb_str_update() calls

    Rubinius no longer uses it, and it conflicts with a public
    method in MRI.

commit 8daf254356241c135ad2c843de567910528a10a7
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Oct 7 06:55:22 2010 +0000

    start using more compact parser API

    This should be easier for Rainbows! to use

commit 090f56bb79a8ec734719d9be90daa3cd01d29871
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Oct 7 06:33:03 2010 +0000

    http_server: avoid method redefinition warnings

    We clobber the accessor methods.

commit 5df8f15c32420c03b2e763a649e6d829ede52113
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Oct 7 05:32:38 2010 +0000

    http: allow this to be used as a request object

    The parser and request object become one and the
    same, since the parser lives for the lifetime
    of the request.

commit 629107d749748f661ddb73f146ab35836874cc9e
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Oct 6 17:16:49 2010 -0700

    bin/unicorn: show "RACK_ENV" in --help

    It's more descriptive as to what environment we're setting
    than "ENVIRONMENT".

commit 1d1a2b1bd5bdd89f774f19bf8ad24c2f5f8a2d4c
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Oct 6 01:27:45 2010 +0000

    Raiefile: capture prerelease tags

    Since we do those, now.

commit cb48b1bc7231db7f53bec6e88e696dc53153750d
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Oct 6 01:08:36 2010 +0000

    unicorn 2.0.0pre1 - a boring "major" release

    Mostly internal cleanups for future versions of Rainbows! and
    people trying out Rubinius.  There are tiny performance
    improvements for Ruby 1.9.2 users which may only be noticeable
    with Rainbows!

    Unicorn 1.1.x users are NOT required to upgrade.

commit 4c59a4861bf3f8d25335696c1f8cbce3cd5db902
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Oct 6 01:07:49 2010 +0000

    gemspec: depend on newer isolate

    We use the latest and greatest whenever possible.

commit cb233696be73873f6f8c367f4b977ade1815b265
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Oct 5 23:59:45 2010 +0000

    various cleanups and reduce indentation

    This also affects some constant scoping rules, but hopefully
    makes things easier to follow.  Accessing ivars (not via
    accessor methods) are also slightly faster, so use them in
    the criticial process_client code path.

commit d4c898a4adc6cb6c3a20a648ae6b9b6a226066a6
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Oct 5 23:34:39 2010 +0000

    upgrade to kgio 1.2.0

    This provides the kgio_read! method which is like readpartial,
    only significantly cheaper when a client disconnects on us.

commit 80f9987581014d694b8eb67bba0d5c408b7d0f98
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Oct 5 23:34:19 2010 +0000

    GNUmakefile: fix isolate invocation

    again :x

commit fd6b47cf1690cb45f2144cd92e0fe1f301c7c37b
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Oct 5 22:09:20 2010 +0000

    tee_input: use kgio to avoid stack traces on EOF

    TeeInput methods may be invoked deep in the stack, so
    avoid giving them more work to do if a client disconnects
    due to a bad upload.

commit 350e8fa3a94838bcc936782315b3472615fe6517
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Oct 5 22:01:19 2010 +0000

    http: raise empty backtrace for HttpParserError

    It's expensive to generate a backtrace and this exception
    is only triggered by bad clients.  So make it harder for
    them to DoS us by sending bad requests.

commit c2975b85b9378797631d3ab133cac371f9fadf54
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Oct 5 21:38:47 2010 +0000

    tests: do not invoke isolate in test install dest

    We don't want to waste time and bandwidth.

commit ec1315c9e9175d755dfd7b4acb8398fa7c7a924e
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Oct 5 21:29:51 2010 +0000

    test_tee_input: use a socketpair()

    It's a much closer representation of what we'd expect in
    the real server than a mono-directional UNIX pipe.

commit c639eef6b9c8d793c7f72fa5ac03adb5cf4d1e14
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Oct 5 19:22:09 2010 +0000

    test_signals: enable test under Rubinius

    The bugs from signal handling were fixed in the Rubinius
    1.1.0 release.

commit 72dee9e4a8234af762b058a38132268d202c17bf
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Oct 5 19:20:39 2010 +0000

    tmpio: use super instead of an explicit method

    This is for compatibility with Ruby implementations such as
    Rubinius that use "IO.new" internally inside "IO.open"

commit 7ca92025ececb4b71ec4420e03d5725f13c39cc4
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Oct 5 18:48:53 2010 +0000

    update comment about non-blocking accept()

    Thanks to kgio, we no longer use accept_nonblock.

commit fc820598da30509269ec84eeca598085ca296e38
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Oct 5 08:00:34 2010 +0000

    util: uindent use less ambiguous constant scoping

    This hopefully makes things easier to read and follow.

commit 3d147e9bcd8f99c94900a00181692c2a09c3c3c9
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Oct 5 07:54:13 2010 +0000

    Unicorn::Util.tmpio => Unicorn::TmpIO.new

    This is slightly shorter and hopefully easier to find.

commit e184b9d0fb45b31d80645475e22f0bbbecd195f9
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Oct 5 01:27:00 2010 +0000

    doc: update TODO

    This gives us some things to think about.

commit 29946368c45dce5da116adb426362ee93c507c4e
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Oct 5 00:13:02 2010 +0000

    start using kgio, the kinder, gentler I/O library

    This should hopefully make the non-blocking accept()
    situation more tolerable under Ruby 1.9.2.

commit 9ef6b6f551a34922cfd831e2521495e89afe2f94
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Oct 4 23:55:31 2010 +0000

    split out isolate usage/logic

    We'll be using more of Isolate in development.

commit 018a9deff4bd9273e053f369d746256e5b3ac99b
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Oct 4 21:06:41 2010 +0000

    http_request: reformat and small reorg

    This hides more HTTP request logic inside our object.

commit dfc5f5a5e4aec4578b79de68c91906da75472a5a
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Sep 29 23:57:57 2010 -0700

    tee_input: update interface to use HttpRequest

    This should ensure we have less typing to do.

commit fe94d80cb37ee441762ad2a8f5c25092f8eb57a8
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Sep 27 22:39:02 2010 -0700

    http_request: avoid globals

    Rainbows! will be able to reuse this.

commit 5b6a97ff54d029d433b79eee1549e6f99464c48b
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Aug 27 21:45:33 2010 +0000

    split out worker to a separate file

    This hopefully makes things easier to read, follow, and find
    since it's mostly documentation...

commit 50c11036dd4898ccfed8b3e0552e88c67b6c63a9
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Aug 27 20:29:55 2010 +0000

    http_response: avoid singleton method

    There's no need for a response class or object since Rack just
    uses an array as the response.  So use a procedural style which
    allows for easier understanding.

    We shall also support keepalive/pipelining in the future, too.

commit 7a3efe8a03f85c1f2957130986c24ef7931ff44a
Merge: 1a2363b 6151686
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Oct 4 20:34:29 2010 +0000

    Merge commit 'v1.1.4'

    * commit 'v1.1.4':
      unicorn 1.1.4 - small bug fix and doc updates
      update Rails 3 tests to use Rails 3 final
      avoid unlinking actively listening sockets
      doc: update HACKING for documentation contributions
      doc: update Sandbox document for Bundler
      TUNING: more on socket buffer sizes

commit 1a2363b17b1d06be6b35d347ebcaed6a0c940200
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Oct 4 04:17:31 2010 +0000

    avoid unlinking actively listening sockets

    While we've always unlinked dead sockets from nuked/leftover
    processes, blindly unlinking them can cause unnecessary failures
    when an active process is already listening on them.  We now
    make a simple connect(2) check to ensure the socket is not in
    use before unlinking it.

    Thanks to Jordan Ritter for the detailed bug report leading to
    this fix.

    ref: http://mid.gmane.org/8D95A44B-A098-43BE-B532-7D74BD957F31@darkridge.com

commit 505a9e72d320fe3ae521ceb0f381c1c0f5ae4389
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Sep 15 14:57:27 2010 -0700

    doc: update HACKING for documentation contributions

    We switched to RDoc 2.5.x long ago and this should clarify
    some documentation preferences I have.

commit 1a75966a5d1a1f6307ed3386e2f91a28bbb72ca0
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Sep 15 14:42:54 2010 -0700

    doc: update Sandbox document for Bundler

    Thanks to Lawrence Pit, Jamie Wilkinson, and Eirik Dentz Sinclair.

    ref: mid.gmane.org/4C8986DA.7090603@gmail.com
    ref: mid.gmane.org/5F1A02DB-CBDA-4302-9E26-8050C2D72433@efficiency20.com

commit f9a7a19a361fd674bab4e2df7e0897015528bba7
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Aug 30 23:25:59 2010 -0700

    TUNING: more on socket buffer sizes

    Large buffers can hurt as well as help.  And the difference
    in real apps that do a lot of things other than I/O often
    makes it not worth it.

commit da272fc48ffaa808456fe94dd7a3e01bc9799832
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Aug 30 08:11:44 2010 +0000

    update Rails 3 tests to use Rails 3 final

    Rails 3 is out, and requires no code changes on our end to work
    (as far as our tests show :)

commit 0aaa0afa49a2953b7c26c1596a284621e23d5fc4
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Aug 30 07:59:01 2010 +0000

    remove nasty ugly hacks at startup

    These nasty hacks were breaking Rubinius compatibility.
    This can be further cleaned up, too.

commit f3e1653b900596e054297675becd01d9985ad482
Merge: feab35f d634b06
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Aug 29 23:38:13 2010 +0000

    Merge branch '1.1.x-stable'

    * 1.1.x-stable:
      unicorn 1.1.3 - small bug fixes
      make log reopens even more robust in threaded apps
      update Rails3 tests to use 3.0.0rc2
      make log reopens more robust in multithreaded apps
      bin/*: more consistent --help output
      SIGTTIN works after SIGWINCH

commit feab35fe531843066db3418598874cf9f9419614
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Aug 28 18:52:48 2010 +0000

    make log reopens even more robust in threaded apps

    A follow-up to 4b23693b9082a84433a9e6c1f358b58420176b27

    If multithreaded programming can be compared to juggling
    chainsaws, then multithreaded programming with signal handlers
    in play is akin to juggling chainsaws on a tightrope
    over shark-infested waters.

commit 18968f6aff2fa5ba5a7e3e3d47c9cc05cd6c260d
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Aug 28 07:07:14 2010 +0000

    update Rails3 tests to use 3.0.0rc2

    No code changes needed, thankfully.

commit 4b23693b9082a84433a9e6c1f358b58420176b27
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Aug 28 05:30:46 2010 +0000

    make log reopens more robust in multithreaded apps

    IOError may occur due to race conditions as another thread
    may close the file immediately after we call File#closed?
    to check.

    Errno::EBADF may occur in some applications that close a file
    descriptor without notifying Ruby (or if two IO objects refer to
    the same descriptor, possibly one of them using IO#for_fd).

commit 096afc1a8e958cc09b4ce8b3bfe76ce056c7ed69
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Aug 24 06:21:00 2010 +0000

    bin/*: more consistent --help output

    This fixes a long-standing bug in the output of "unicorn_rails"
    where the program name was missing.

commit bdc79712e5ac53d39c51e80dfe50aff950e5053f
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Aug 7 03:27:50 2010 +0000

    miscellaneous loop and begin cleanups

    These are minor changes to remove unnecessary loop nesting and
    begin usage to reduce our code size and hopefully simplify
    flow for readers.

commit e4d0b226391948ef433f1d0135814315e4c48535
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Aug 7 04:25:51 2010 +0000

    log ERROR messages if workers exit with failure

    Something is wrong if workers exit with a non-zero status,
    so we'll increase the log level to help prevent people
    from missing it.

commit f1d33c80dd6c5650f960f7087f4e08f809754d34
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Jul 16 08:25:32 2010 +0000

    SIGTTIN works after SIGWINCH

    In addition to SIGHUP, it should be possible to gradually bring
    workers back up (to avoid overloading the machine) when rolling
    back upgrades after SIGWINCH.

    Noticed-by: Lawrence Pit
    ref: http://mid.gmane.org/4C3F8C9F.2090903@gmail.com

commit 5a0506c2affd2f5abe6e7315121e67aa3e32b253
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Jul 16 08:25:32 2010 +0000

    SIGTTIN works after SIGWINCH

    In addition to SIGHUP, it should be possible to gradually bring
    workers back up (to avoid overloading the machine) when rolling
    back upgrades after SIGWINCH.

    Noticed-by: Lawrence Pit
    ref: http://mid.gmane.org/4C3F8C9F.2090903@gmail.com
    (cherry picked from commit e75ee7615f9875db314a6403964e7b69a68b0521)

commit 78ba3899eb24d6893e34984b9f1c479c7e6c9be3
Merge: c13bec3 d1818d2
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jul 13 13:04:53 2010 -0700

    Merge branch '1.1.x-stable'

    * 1.1.x-stable: (27 commits)
      unicorn 1.1.2 - fixing upgrade rollbacks
      unicorn 1.0.1 - bugfixes only
      SIGHUP deals w/ dual master pid path scenario
      launcher: do not re-daemonize when USR2 upgrading
      SIGHUP deals w/ dual master pid path scenario
      launcher: do not re-daemonize when USR2 upgrading
      unicorn 1.1.1 - fixing cleanups gone bad :x
      tee_input: fix constant resolution for client EOF
      unicorn 1.1.0 - small changes and cleanups
      cleanup "stringio" require
      tee_input: safer record separator ($/) handling
      prefer "[]" to "first"/"last" where possible
      tee_input: safer record separator ($/) handling
      socket_helper: disable documentation
      socket_helper: cleanup FreeBSD accf_* detection
      socket_helper: no reason to check for logger method
      configurator: cleanup RDoc, un-indent
      configurator: documentation for new accept options
      socket_helper: move defaults to the DEFAULTS constant
      doc: recommend absolute paths for -c/--config-file
      ...

commit c13bec3449396b21795966101367838161612d61
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jul 13 08:57:37 2010 +0000

    SIGHUP deals w/ dual master pid path scenario

    As described in our SIGNALS documentation, sending SIGHUP to the
    old master (to respawn SIGWINCH-ed children) while the new
    master (spawned from SIGUSR2) is active is useful for backing
    out of an upgrade before sending SIGQUIT to the new master.

    Unfortunately, the SIGHUP signal to the old master will cause
    the ".oldbin" pid file to be reset to the non-".oldbin" version
    and thus attempt to clobber the pid file in use by the
    to-be-terminated new master process.

    Thanks to the previous commit to prevent redaemonization in the
    new master, the old master can reliably detect if the new master
    is active while it is reloading the config file.

    Thanks to Lawrence Pit for discovering this bug.
    ref: http://mid.gmane.org/4C3BEACF.7040301@gmail.com

commit 3f0f9d6d72cf17b34c130b86eb933bbc513b24b3
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jul 13 08:53:48 2010 +0000

    launcher: do not re-daemonize when USR2 upgrading

    This was accidentally enabled when ready_pipe was developed.
    While re-daemonizing appears harmless in most cases this makes
    detecting backed-out upgrades from the original master process
    impossible.

commit ac15513bb81a345cd12c67702a81a585b8b0514e
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Jul 11 02:05:01 2010 +0000

    tee_input: fix constant resolution for client EOF

    Noticed while hacking on a Zbatery-using application

commit 0fea004ab093ec4f59d919915a505a136326bd8a
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Jul 8 05:54:25 2010 +0000

    cleanup "stringio" require

    "stringio" is part of the Ruby distro and we use it in multiple
    places, so avoid re-requiring it.

commit 5ece8c1c33f10e6496dfe5ae1d0d368293278d2d
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Jul 8 05:33:49 2010 +0000

    prefer "[]" to "first"/"last" where possible

    "[]" is slightly faster under Ruby 1.9 (but slightly
    slower under 1.8).

commit 1cd698f8c7938b1f19e9ba091708cb4515187939
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Jul 8 05:14:55 2010 +0000

    tee_input: safer record separator ($/) handling

    Different threads may change $/ during execution, so cache it at
    function entry to a local variable for safety.  $/ may also be
    of a non-binary encoding, so rely on Rack::Utils.bytesize to
    portably capture the correct size.

    Our string slicing is always safe from 1.9 encoding: both our
    socket and backing temporary file are opened in binary mode,
    so we'll always be dealing with binary strings in this class
    (in accordance to the Rack spec).

commit 98c51edf8b6f031a655a93b52808c9f9b78fb6fa
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jul 6 14:17:02 2010 -0700

    socket_helper: disable documentation for internals

commit 2b4b15cf513f66dc7a5aabaae4491c17895c288c
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jul 6 12:59:45 2010 -0700

    socket_helper: cleanup FreeBSD accf_* detection

    Instead of detecting at startup if filters may be used, just try
    anyways and log the error.  It is better to ask for forgiveness
    than permission :)

commit e0ea1e1548a807d152c0ffc175915e98addfe1f2
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jul 6 12:51:24 2010 -0700

    socket_helper: no reason to check for logger method

    We only use this module in HttpServer and our unit test mocks
    it properly.

commit e4d2c7c302e96ee504d82376885ac6b1897c666a
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jul 6 12:49:48 2010 -0700

    configurator: cleanup RDoc, un-indent

    No point in redeclaring the Unicorn module in here.

commit 686281a90a9b47bac4dfd32a72a97e6e8d26afa1
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jul 6 12:39:36 2010 -0700

    configurator: documentation for new accept options

    The defaults should be reasonable, but there may be
    folks who want to experiment.

commit ef8f888ba1bacc759156f7336d39ba9b947e3f9d
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jul 6 12:35:45 2010 -0700

    socket_helper: move defaults to the DEFAULTS constant

    This is to allow Rainbows! to override the defaults.

commit d7695c25c5e3b1c90e63bf15a5c5fdf68bfd0c34
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jul 5 23:14:40 2010 +0000

    doc: recommend absolute paths for -c/--config-file

    Suggested-by: Jeremy Evans
    ref: http://mid.gmane.org/AANLkTintT4vHGEdueuG45_RwJqFCToHi5pm2-WKDSUMz@mail.gmail.com

commit 646cc762cc9297510102fc094f3af8a5a9e296c7
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Jul 3 09:30:57 2010 +0000

    socket_helper: tunables for tcp_defer_accept/accept_filter

    Under Linux, this allows users to tune the time (in seconds) to
    defer connections before allowing them to be accepted.  The
    behavior of TCP_DEFER_ACCEPT changed with Linux 2.6.32 and idle
    connections may still be accept()-ed after the specified value
    in seconds.  A small value of '1' remains the default for
    Unicorn as Unicorn does not worry about slow clients.  Higher
    values provide better DoS protection for Rainbows! but also
    increases kernel memory usage.

    Allowing "dataready" for FreeBSD accept filters will allow
    SSL sockets to be used in the future for HTTPS, too.

commit 5769f313793ca84100f089b1911f2e22d0a31e9d
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jun 28 04:45:16 2010 +0000

    http_response: this should be a module, not a class

    This affects Rainbows!, but Rainbows! is still using the Unicorn
    1.x branch.  While we're at it, avoid redeclaring the "Unicorn"
    module, it makes documentation noisier.

commit cf63db66bca9acfd3416ab8fc8a7fd4f07927342
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Jun 25 11:29:13 2010 -0700

    test-exec: prefer ENV['PWD'] in working_directory tests

    We do an extra check in the application dispatch to ensure
    ENV['PWD'] is set correctly to match Dir.pwd (even if the
    string path is different) as this is required for Capistrano
    deployments.

    These tests should now pass under OSX where /var is apparently
    a symlink to /private/var.

commit e2503a78150f4be113ee2a19404ba6aec401c696
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Jun 24 05:47:27 2010 +0000

    const: bump UNICORN_VERSION to 2.0.0pre

commit b8b979d75519be1c84818f32b83d85f8ec5f6072
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Jun 24 04:31:37 2010 +0000

    http: avoid (re-)declaring the Unicorn module

    It makes for messy documentation.

commit 6f720afd95d8131a2657c643b97cb18c750ed9f8
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Jun 24 04:24:34 2010 +0000

    tee_input: undent, avoid (re)-declaring "module Unicorn"

    It makes RDoc look better and cleaner, since we don't
    do anything in the Unicorn namespace.

commit 9f48be69bfe579dab02b5fe8d6e728ae63fd24fc
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Jun 24 04:11:35 2010 +0000

    tee_input: allow tuning of client_body_buffer_size/io_size

    Some folks may require more fine-grained control of buffering
    and I/O chunk sizes, so we'll support them (unofficially, for
    now).

commit 1a49a8295054a2e931f5288540acb858be8edcc8
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Jun 24 03:54:40 2010 +0000

    tee_input: (nitpick) use IO#rewind instead of IO#seek(0)

    no need to pass an extra argument

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