I have just modified the HTTP header respond of IIS Servers
squidclient -m HEAD http://invalid_URL
HTTP/1.0 404 Not Found
Cache-Control: public
Content-Length: 1731
Content-Type: text/html
Expires: 1000
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
Date: Fri, 13 May 2011 04:30:09 GMT
X-Cache: MISS
It still gets MISS :(
Kien Le.
On Fri, May 13, 2011 at 11:13 AM, Amos Jeffries <squid3_at_treenet.co.nz> wrote:
> On 13/05/11 15:55, Le Trung Kien wrote:
>>
>> Hi,
>> On the original servers, I'm using IIS6.0 and the 404b.html is the
>> page returned when client requests non-existing pages.
>> I attempt to add a header like this on that page:
>>
>> <HEAD><TITLE>The page cannot be found</TITLE>
>> <META HTTP-EQUIV="Content-Type" Content="text/html; charset=Windows-1252">
>> <META HTTP-EQUIV="Cache-Control" Content="Private">
>> <META HTTP-EQUIV="Expires" Content="300">
>> </HEAD>
>>
>> This header is the same on all pages generated by our web applications
>> and could be cached.
>> However, I test and see that our squid still doesn't cache that 404b.html
>> page
>>
>> squidclient -m HEAD http://invalid_URL
>>
>> HTTP/1.0 404 Not Found
>> Content-Length: 1731
>> Content-Type: text/html
>> Server: Microsoft-IIS/6.0
>> X-Powered-By: ASP.NET
>> Date: Fri, 13 May 2011 03:41:10 GMT
>> X-Cache: MISS
>>
>> squidclient -m HEAD http://existing_URL
>>
>> HTTP/1.0 200 OK
>> Date: Fri, 13 May 2011 03:34:22 GMT
>> Server: Microsoft-IIS/6.0
>> X-Powered-By: ASP.NET
>> X-AspNet-Version: 2.0.50727
>> X-Powered-By: UrlRewriter.NET 2.0.0
>> Cache-Control: private
>> Content-Type: text/html; charset=utf-8
>> Content-Length: 121485
>> Age: 424
>> X-Cache: HIT
>>
>> I realize that the header squidclient receives when requesting an
>> invalid URL is less and our squid still MISS.
>>
>> Kien Le.
>>
>
>
> That is HTML. The page headers only affect the web browser graphical
> display.
>
> You need to set them in the HTTP headers instead. So Expires: shows up in
> your HEAD request. IIRC there is an XML site-wide config file somewhere (in
> the site root directory?) where these are set. I'm a bit vague on the
> details though, not being an IIS admin.
>
> Also,
> Content-Type does not matter IIS is sending it anyway as you can see below.
> "Cache-Control: private" will absolutely prevent Squid from caching the
> reply. The exact opposite of what you are trying to do. If you have
> private/confidential user details on that 404 they will have to be removed.
>
> Amos
> --
> Please be using
> Current Stable Squid 2.7.STABLE9 or 3.1.12
> Beta testers wanted for 3.2.0.7 and 3.1.12.1
>
Received on Fri May 13 2011 - 04:34:31 MDT
This archive was generated by hypermail 2.2.0 : Fri May 13 2011 - 12:00:03 MDT