Zbatery 0.2.1 - use a less-broken parser from Unicorn v0.2.1

This release fixes a denial-of-service vector for deployments
exposed directly to untrusted clients.

The HTTP parser in Unicorn <= 0.97.0 would trip an assertion
(killing the associated worker process) on invalid
Content-Length headers instead of raising an exception.  Since
Rainbows! and Zbatery supports multiple clients per worker
process, all clients connected to the worker process that hit
the assertion would be aborted.

Deployments behind nginx are _not_ affected by this bug, as
nginx will reject clients that send invalid Content-Length
headers.

The status of deployments behind other HTTP-aware proxies is
unknown.  Deployments behind a non-HTTP-aware proxy (or no proxy
at all) are certainly affected by this DoS.

Users are strongly encouraged to upgrade as soon as possible,
there are no other changes besides this bug fix from Rainbows!
0.91.0 nor Unicorn 0.97.0

This bug affects all previously released versions of Rainbows!
and Zbatery.

3 files changed, 7 insertions, 7 deletions

diff --git a/GIT-VERSION-GEN b/GIT-VERSION-GEN
index e36125a..2cadc89 100755
--- a/GIT-VERSION-GEN
+++ b/GIT-VERSION-GEN
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 GVF=GIT-VERSION-FILE
-DEF_VER=v0.2.0.GIT
+DEF_VER=v0.2.1.GIT
 
 LF='
 '
diff --git a/lib/zbatery.rb b/lib/zbatery.rb
index 0b41906..75b03ba 100644
--- a/lib/zbatery.rb
+++ b/lib/zbatery.rb
@@ -4,7 +4,7 @@ require 'rainbows'
 module Zbatery
 
   # current version of Zbatery
-  VERSION = "0.2.0"
+  VERSION = "0.2.1"
 
   class << self
 
diff --git a/zbatery.gemspec b/zbatery.gemspec
index 5d84d9c..67c595b 100644
--- a/zbatery.gemspec
+++ b/zbatery.gemspec
@@ -50,11 +50,11 @@ Gem::Specification.new do |s|
   #   espace-neverblock + eventmachine
   #   async_sinatra + sinatra + eventmachine
   #
-  # rainbows 0.90.2 depends on unicorn 0.96.1,
-  # unicorn 0.96.0 and before had a memory leak
-  # that was only triggered in Rainbows!/Zbatery
-  s.add_dependency(%q<unicorn>, ["~> 0.97.0"])
-  s.add_dependency(%q<rainbows>, [">= 0.91.0", "<= 1.0.0"])
+  # rainbows 0.91.1 depends on unicorn ~> 0.97.1, previous versions of
+  # Unicorn were vulnerable to a remote DoS when exposed directly to
+  # untrusted clients (a configuration only supported by Zbatery and Rainbows!,
+  # Unicorn has never and will never be supported without trusted LAN clients.
+  s.add_dependency(%q<rainbows>, [">= 0.91.1", "<= 1.0.0"])
 
   # s.licenses = %w(GPLv2 Ruby) # accessor not compatible with older RubyGems
 end