Keep the encoding of the body correct. Fixes #79

lib/puma/server.rb

@@ -568,12 +568,11 @@ module Puma
       if remain > MAX_BODY
         stream = Tempfile.new(Const::PUMA_TMP_BASE)
         stream.binmode
+        stream.write body
       else
-        stream = StringIO.new
+        stream = StringIO.new body
       end
 
-      stream.write body
-
       # Read an odd sized chunk so we can read even sized ones
       # after this
       chunk = client.readpartial(remain % CHUNK_SIZE)

test/test_rack_server.rb

@@ -75,6 +75,24 @@ class TestRackServer < Test::Unit::TestCase
     end
   end
 
+  def test_large_post_body
+    @checker = ErrorChecker.new ServerLint.new(@simple)
+    @server.app = @checker
+
+    @server.run
+
+    big = "x" * (1024 * 16)
+
+    Net::HTTP.post_form URI.parse('http://localhost:9998/test'),
+                 { "big" => big }
+
+    stop
+
+    if exc = @checker.exception
+      raise exc
+    end
+  end
+
   def test_path_info
     input = nil
     @server.app = lambda { |env| input = env; @simple.call(env) }
@@ -119,4 +137,5 @@ class TestRackServer < Test::Unit::TestCase
 
     assert_match %r!GET /test HTTP/1\.1!, log.string
   end
+
 end