From e861e6e54969efb9ed42c65d3e3a322844f8e8c9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=83=B3=E5=BD=93=E5=BD=93?= <donghua.yan@alipay.com>
Date: Wed, 27 Aug 2014 00:47:52 +0800
Subject: [PATCH] Disable caching

---
 lib/requestHandler.js | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/lib/requestHandler.js b/lib/requestHandler.js
index 211798d..3f7c27d 100644
--- a/lib/requestHandler.js
+++ b/lib/requestHandler.js
@@ -7,6 +7,7 @@ var http  = require("http"),
     color          = require("colorful"),
     sleep          = require("sleep"),
     Buffer         = require('buffer').Buffer,
+    ChunkedStream  = require("chunked"),
     httpsServerMgr = require("./httpsServerMgr");
 
 var httpsServerMgrInstance = new httpsServerMgr();
@@ -115,7 +116,9 @@ function userRequestHandler(req,userRes){
         var proxyReq = (ifHttps ? https : http).request(options, function(res) {
             userRes.writeHead(res.statusCode,mergeCORSHeader(req.headers,res.headers));
             if(callback){
+                res = new ChunkedStream(res);
                 res.on('data',function(chunk){
+                    console.log("chunk",chunk);
                     userRes.write(chunk);
                 });
                 res.on('end',function(){
@@ -227,6 +230,13 @@ function mergeCORSHeader(reqHeader,originHeader){
     targetObj["access-control-allow-methods"]     = "GET, POST, PUT";
     targetObj["access-control-allow-headers"]     = reqHeader['access-control-request-headers'] || "-___-||";
 
+    // Disable caching
+    // If the response status is 304 not modified, the data event of response will not emmit
+    targetObj["Transfer-Encoding"]                = "chunked"
+    targetObj["Cache-Control"]                    = "no-cache, no-store, must-revalidate";
+    targetObj["Pragma"]                           = "no-cache";
+    targetObj["Expires"]                          = 0;
+
     return targetObj;
 }