Why does using ASP.NET OutputCache keep returning a 200 OK, not a 304 Not Modified?
- by Pure.Krome
Hi folks,
i have a simple aspx page. Here's the top of it:-
<%@ Page
Language="C#"
AutoEventWireup="true"
CodeFile="Foo.aspx.cs"
Inherits="Foo" %>
<%@ OutputCache Duration="3600" VaryByParam="none" Location="Any" %>
Now, every time I hit the page in FireFox (either hit F5 or hit enter in the url bar) I keep getting a 200 OK response. Here's a sample reply from FireBug :-
Request Headers:-
GET /sitemap.xml HTTP/1.1
Host: localhost.foo.com.au
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-GB; rv:1.9.2)
Gecko/20100115 Firefox/3.6
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-au,en-gb;q=0.7,en;q=0.3
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Cookie: <snipped>
If-Modified-Since: Tue, 01 Jun 2010 07:35:17 GMT
If-None-Match: ""
Cache-Control: max-age=0
Response Headers:-
HTTP/1.1 200 OK
Cache-Control: public
Content-Type: text/xml; charset=utf-8
Expires: Tue, 01 Jun 2010 08:35:17 GMT
Last-Modified: Tue, 01 Jun 2010 07:35:17 GMT
Etag: ""
Server: Microsoft-IIS/7.5
X-Powered-By: UrlRewriter.NET 2.0.0
X-AspNet-Version: 4.0.30319
Date: Tue, 01 Jun 2010 07:35:20 GMT
Content-Length: 775
Firebug Cache tab:-
Last Modified Tue Jun 01 2010 17:35:20 GMT+1000 (AUS Eastern Standard Time)
Last Fetched Tue Jun 01 2010 17:35:20 GMT+1000 (AUS Eastern Standard Time)
Expires Tue Jun 01 2010 18:35:17 GMT+1000 (AUS Eastern Standard Time)
Data Size 775
Fetch Count 105
Device disk
Now, if i try it in Fiddler using the Request Builder (and no extra data) I also keep getting the same 200 OK reply.
Request Headers:-
GET http://localhost.foo.com.au/sitemap.xml HTTP/1.1
User-Agent: Fiddler
Host: foo.com.au
Response Headers:-
HTTP/1.1 200 OK
Cache-Control: public
Content-Type: text/xml; charset=utf-8
Expires: Tue, 01 Jun 2010 07:58:00 GMT
Last-Modified: Tue, 01 Jun 2010 06:58:00 GMT
ETag: ""
Server: Microsoft-IIS/7.5
X-Powered-By: UrlRewriter.NET 2.0.0
X-AspNet-Version: 4.0.30319
Date: Tue, 01 Jun 2010 06:59:16 GMT
Content-Length: 775
It looks like it's asking to cache it but it's not :(
Server is a localhost IIS7.5 on Win7. (as listed in the Response data).
Can anyone see what I'm doing wrong?
