[ANN] yahns 1.12.4 -_- sleepy app server for Ruby

[Eric Wong <normalperson@yhbt.net>]

A Free Software, multi-threaded, non-blocking network
application server designed for low _idle_ power consumption.
It is primarily optimized for applications with occasional users
which see little or no traffic.  yahns currently hosts Rack/HTTP
applications, but may eventually support other application
types.  Unlike some existing servers, yahns is extremely
sensitive to fatal bugs in the applications it hosts.

* git clone git://yhbt.net/yahns
* https://yahns.yhbt.net/README
* https://yahns.yhbt.net/NEWS.atom.xml
* we only accept plain-text email yahns-public@yhbt.net
* and archive all the mail we receive: https://yhbt.net/yahns-public/
* nntp://news.public-inbox.org/inbox.comp.lang.ruby.yahns

Changes:

    yahns 1.12.4 - rack.hijack and proxy_pass bugfixes

    This release fixes some resource leaks in uncommonly used parts
    of yahns as well as including some documentation improvements.
    No need to upgrade unless you rely on rack.hijack for responses
    or use the (currently-undocumented) proxy_pass module(*).

    9 non-merge changes since 1.12.3:

          proxy_pass: honor wbuf_persist when ending response
          proxy_http_response: fix non-terminated fast responses, too
          test_proxy_pass: test for auto chunking on 1.0 backends
          wbuf: drop persistence if writing to client fails
          proxy_http_response: cleanup: avoid redundant setting of "alive"
          proxy_http_response: do not persist upstream on slow clients
          proxy_pass: drop resources immediately on errors
          document Rack::Chunked/ContentLength semi-requirements
          extras/exec_cgi: document cgit example

     Documentation/yahns-rackup.pod    | 10 ++++++++++
     GIT-VERSION-GEN                   |  2 +-
     examples/yahns_rack_basic.conf.rb |  6 ++++++
     extras/exec_cgi.rb                |  8 ++++++++
     lib/yahns/proxy_http_response.rb  | 40 ++++++++++++++++++++++-----------------
     lib/yahns/proxy_pass.rb           |  5 +++--
     lib/yahns/wbuf_common.rb          |  1 +
     test/test_proxy_pass.rb           | 15 +++++++++++++++
     8 files changed, 67 insertions(+), 20 deletions(-)

    (*) 1.13.0 will include refactoring in proxy_pass and possibly
        documenting it as stable-enough-for-public use:

        https://yhbt.net/yahns-public/20160220081619.GA10850@dcvr.yhbt.net/t/

Please note the disclaimer:

  yahns is extremely sensitive to fatal bugs in the apps it hosts.  There
  is no (and never will be) any built-in "watchdog"-type feature to kill
  stuck processes/threads.  Each yahns process may be handling thousands
  of clients; unexpectedly killing the process will abort _all_ of those
  connections.  Lives may be lost!

  yahns hackers are not responsible for your application/library bugs.
  Use an application server which is tolerant of buggy applications
  if you cannot be bothered to fix all your fatal bugs.