lib/rack/sendfile.rb in rack-1.2.2 vs lib/rack/sendfile.rb in rack-1.2.3

@@ -115,9 +115,10 @@
           else
             env['rack.errors'] << "X-Accel-Mapping header missing"
           end
         when 'X-Sendfile', 'X-Lighttpd-Send-File'
           path = F.expand_path(body.to_path)
+          headers['Content-Length'] = '0'
           headers[type] = path
           body = []
         when '', nil
         else
           env['rack.errors'] << "Unknown x-sendfile variation: '#{variation}'.\n"