Send a Content-Length header when streaming a file

diff --git a/config/initializers/streaming.rb b/config/initializers/streaming.rb
index 0fc0929511628a768927581ca9ac6f0054f33596..db61e6b24041069f478d5ef09a5b5f2076155ab3 100644 (file)
--- a/config/initializers/streaming.rb
+++ b/config/initializers/streaming.rb
@@ -5,6 +5,8 @@ module ActionController
 
     def send_file(file, options = {})
       if file.is_a? File or file.is_a? Tempfile
+        headers["Content-Length"] ||= file.size.to_s
+
         options[:filename] ||= File.basename(file.path) unless options[:url_based_filename]
         send_file_headers! options
 
@@ -12,6 +14,8 @@ module ActionController
         self.content_type = options[:content_type] if options.key?(:content_type)
         self.response_body = file
       else
+        headers["Content-Length"] ||= File.size(file).to_s
+
         old_send_file(file, options)
       end
     end