RE: Does ISA 2004 Caching support the "If-Modified-Since" HTTP header
- From: Johnny <Johnny@xxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Mon, 18 Apr 2005 14:39:07 -0700
Bump
"Johnny" wrote:
> Hello all,
>
> I am using ISA 2004 Caching for a website I manage and would like to know if
> ISA 2004 handles the "If-Modified-Since" appropriately. I'm gonna guess it
> should support this but I would like someone that knows to confirm. Thanks!
>
> Here is a brief description of how it works:
>
> "The If-Modified-Since request-header field is used with a method to make it
> conditional: if the requested variant has not been modified since the time
> specified
> in this field, an entity will not be returned from the server; instead, a
> 304 (not modified) response will be returned without any message-body."
>
> This means that if the date sent in the request header is older than the
> date ISA
> cached the page, ISA should send back the page with a 200 response as usual.
> Otherwise, it should send a 304 response without a body.
>
> For more information about how the "if-Modified-since" header works, see
> section 14.25 of http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html.
>
> Thanks!
>
> Johnny
.
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