From 77aa7ed1a53fc609b66600092023fa17707bcafd Mon Sep 17 00:00:00 2001
From: Alexandre Alapetite <alexandre@alapetite.fr>
Date: Thu, 14 Jun 2012 01:47:43 +0300
Subject: [PATCH] Parsing a string into a Date is expensive and not needed for
 the 304 Not Modified caching mechanism

---
 lightnode.js | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lightnode.js b/lightnode.js
index dc05c49..4a3aaae 100644
--- a/lightnode.js
+++ b/lightnode.js
@@ -357,11 +357,12 @@ exports.FileServer = type(exports.HttpServer, function() {
 			if (ext in mimeTypes)
 				headers['content-type'] = mimeTypes[ext]
 			
-			headers['last-modified'] = new(Date)(file.header.mtime).toUTCString()
+			var dateModified = new(Date)(file.header.mtime).toUTCString()
+			headers['last-modified'] = dateModified
 			headers['transfer-encoding'] = 'chunked'
 			headers['server'] = 'lightnode'
 			
-			if (Date.parse(file.header.mtime) <= Date.parse(req.headers['if-modified-since'])) {
+			if (dateModified === req.headers['if-modified-since']) {
 				resp.writeHead(304, headers)
 				resp.end()
 				return