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* [PATCH] Rack::Chunked and ContentLength middlewares by default
@ 2011-08-19 21:07 14% Eric Wong
  0 siblings, 0 replies; 1+ results
From: Eric Wong @ 2011-08-19 21:07 UTC (permalink / raw)
  To: mongrel-unicorn

This was prompted by the recent thread in
http://thread.gmane.org/gmane.comp.lang.ruby.unicorn.general/1106
starting with Message-ID:
  CAL3dLFrkDix=L-STUnrxy7Wuc4wDZOb05NLbG6HABvFJNGmnmQ@mail.gmail.com

Rainbows! users have also run into this problem a few times, too:
  AANLkTimSuK7-ihgCa00D-fot4U-FbZt2diQFndyN4uit@mail.gmail.com
  2B157204-E5C6-4F5D-98A9-E2A79F9F9765@christophsturm.com

>From 1077961a3f8933c65d39c7e6c9ed6ff3b6b53647 Mon Sep 17 00:00:00 2001
From: Eric Wong <normalperson@yhbt.net>
Date: Fri, 19 Aug 2011 20:47:29 +0000
Subject: [PATCH] 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.
---
 lib/unicorn.rb |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/lib/unicorn.rb b/lib/unicorn.rb
index bb5409b..b882ce3 100644
--- a/lib/unicorn.rb
+++ b/lib/unicorn.rb
@@ -50,9 +50,14 @@ module Unicorn
       pp({ :inner_app => inner_app }) if $DEBUG
 
       # return value, matches rackup defaults based on env
+      # Unicorn does not support persistent connections, but Rainbows!
+      # and Zbatery both do.  Users accustomed to the Rack::Server default
+      # middlewares will need ContentLength/Chunked middlewares.
       case ENV["RACK_ENV"]
       when "development"
         Rack::Builder.new do
+          use Rack::ContentLength
+          use Rack::Chunked
           use Rack::CommonLogger, $stderr
           use Rack::ShowExceptions
           use Rack::Lint
@@ -60,6 +65,8 @@ module Unicorn
         end.to_app
       when "deployment"
         Rack::Builder.new do
+          use Rack::ContentLength
+          use Rack::Chunked
           use Rack::CommonLogger, $stderr
           run inner_app
         end.to_app
-- 
Eric Wong
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