1 files changed, 3 insertions, 6 deletions
diff --git a/lib/rack/commonlogger.rb b/lib/rack/commonlogger.rb
index 880f0fbf..1edc9b83 100644
--- a/lib/rack/commonlogger.rb
+++ b/lib/rack/commonlogger.rb
@@ -16,6 +16,7 @@ module Rack
      def call(env)
        began_at = Time.now
        status, header, body = @app.call(env)
+      header = Utils::HeaderHash.new(header)
        log(env, status, header, began_at)
        [status, header, body]
      end
@@ -41,12 +42,8 @@ module Rack
      end
  
      def extract_content_length(headers)
-      headers.each do |key, value|
-        if key.downcase == 'content-length'
-          return value.to_s == '0' ? '-' : value
-        end
-      end
-      '-'
+      value = headers['Content-Length'] or return '-'
+      value.to_s == '0' ? '-' : value
      end
    end
  end