Diff

--- a/plugins/mod_http_files.lua	Sun Dec 16 08:17:28 2012 +0100
+++ b/plugins/mod_http_files.lua	Sun Dec 16 08:34:50 2012 +0100
@@ -57,11 +57,14 @@
 		return 404;
 	end
 
-	response.headers.last_modified = os_date('!%a, %d %b %Y %H:%M:%S GMT', attr.modification);
+	local last_modified = os_date('!%a, %d %b %Y %H:%M:%S GMT', attr.modification);
+	response.headers.last_modified = last_modified;
 
-	local tag = ("%02x-%x-%x-%x"):format(attr.dev or 0, attr.ino or 0, attr.size or 0, attr.modification or 0);
-	response.headers.etag = tag;
-	if tag == request.headers.if_none_match then
+	local etag = ("%02x-%x-%x-%x"):format(attr.dev or 0, attr.ino or 0, attr.size or 0, attr.modification or 0);
+	response.headers.etag = etag;
+
+	if etag == request.headers.if_none_match
+	or last_modified == request.headers.if_modified_since then
 		return 304;
 	end