From 20bf660a3efff9229c81b3b3a0feb6844bc27a7c Mon Sep 17 00:00:00 2001
From: Eric Wong <normalperson@yhbt.net>
Date: Tue, 30 Jun 2009 17:15:56 -0700
Subject: TrailerParser integration into ChunkedReader

Support for the "Trailer:" header and associated Trailer
lines should be reasonably well supported now
---
 lib/unicorn.rb                |  1 +
 lib/unicorn/chunked_reader.rb | 10 ++++++++--
 lib/unicorn/const.rb          |  1 +
 lib/unicorn/http_request.rb   |  2 +-
 4 files changed, 11 insertions(+), 3 deletions(-)

(limited to 'lib')

diff --git a/lib/unicorn.rb b/lib/unicorn.rb
index 343f762..6e937bf 100644
--- a/lib/unicorn.rb
+++ b/lib/unicorn.rb
@@ -13,6 +13,7 @@ module Unicorn
   autoload :Configurator, 'unicorn/configurator'
   autoload :TeeInput, 'unicorn/tee_input'
   autoload :ChunkedReader, 'unicorn/chunked_reader'
+  autoload :TrailerParser, 'unicorn/trailer_parser'
   autoload :Util, 'unicorn/util'
 
   Z = '' # the stock empty string we use everywhere...
diff --git a/lib/unicorn/chunked_reader.rb b/lib/unicorn/chunked_reader.rb
index f9bd4ec..606e4a6 100644
--- a/lib/unicorn/chunked_reader.rb
+++ b/lib/unicorn/chunked_reader.rb
@@ -7,8 +7,8 @@ require 'unicorn/http11'
 module Unicorn
   class ChunkedReader
 
-    def initialize(input, buf)
-      @input, @buf = input, buf
+    def initialize(env, input, buf)
+      @env, @input, @buf = env, input, buf
       @chunk_left = 0
       parse_chunk_header
     end
@@ -71,6 +71,12 @@ module Unicorn
         @chunk_left = $1.to_i(16)
         if 0 == @chunk_left # EOF
           buf.sub!(/\A\r\n(?:\r\n)?/, Z) # cleanup for future requests
+          if trailer = @env[Const::HTTP_TRAILER]
+            tp = TrailerParser.new(trailer)
+            while ! tp.execute!(@env, buf)
+              buf << @input.readpartial(Const::CHUNK_SIZE)
+            end
+          end
           @input = nil
         end
         return @chunk_left
diff --git a/lib/unicorn/const.rb b/lib/unicorn/const.rb
index 9dcf031..be69753 100644
--- a/lib/unicorn/const.rb
+++ b/lib/unicorn/const.rb
@@ -32,6 +32,7 @@ module Unicorn
     REMOTE_ADDR="REMOTE_ADDR".freeze
     HTTP_X_FORWARDED_FOR="HTTP_X_FORWARDED_FOR".freeze
     HTTP_EXPECT="HTTP_EXPECT".freeze
+    HTTP_TRAILER="HTTP_TRAILER".freeze
     RACK_INPUT="rack.input".freeze
     STREAM_INPUT="unicorn.stream_input".freeze
   end
diff --git a/lib/unicorn/http_request.rb b/lib/unicorn/http_request.rb
index a6ed7c9..3df9120 100644
--- a/lib/unicorn/http_request.rb
+++ b/lib/unicorn/http_request.rb
@@ -96,7 +96,7 @@ module Unicorn
 
         if te = PARAMS[Const::HTTP_TRANSFER_ENCODING]
           if /\Achunked\z/i =~ te
-            socket = ChunkedReader.new(socket, body)
+            socket = ChunkedReader.new(PARAMS, socket, body)
             length = body = nil
           end
         end
-- 
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