I see what you mean.
In my case, the resource (with .xap extension, don't know if that
matters) resides in GAE server as part of the deployed web app; there
is not URL Fetch to fetch the resource from outside server. The
resource is not located in the WEB-INF directory either; it is located
under a directory called ClientBin under root. It is a static file
that I thought should be treated like other static files; say, a jpg
file.
On Mar 16, 2:15 am, Alkis Evlogimenos ('Αλκης Ευλογημένος)
<[email protected]> wrote:
> Ermm.... ok lets try for a third time :-). Say you have a GAE app and you
> fetch pages from cnn.com. If cnn.com does not support If-Modified-Since then
> you are never getting 304's back, no matter what headers you put in your
> request. It has nothing to do with GAE.
>
> In the example above "server" is cnn.com.
>
> - alkis
>
> 2010/3/16 JC <[email protected]>
>
>
>
> > Are you saying that not all GAE servers running in the Google data
> > center support If-Modified-Since? Can you elaborate a bit more? The
> > Java app was deployed to GAE data center which I assume is running the
> > latest 1.3.1 which claims to support conditional Get.
>
> > On Mar 15, 6:15 pm, Alkis Evlogimenos ('Αλκης Ευλογημένος)
> > <[email protected]> wrote:
> > > With server I mean the server you are fetching pages from. That server
> > might
> > > not have support for If-Modified-Since.
>
> > > - alkis
>
> > > 2010/3/16 JC <[email protected]>
>
> > > > Thanks for the prompt reply!
>
> > > > I don't quite understand what you meant by server not supporting it.
> > > > It is running against central GAE server, not my local development
> > > > server.
>
> > > > As for the date format, This is the dump of the HTTP header through a
> > > > network sniffer as follow.. It seems to be conforming to HTTP spec. Do
> > > > you see anything wrong?
>
> > > > GET /ClientBin/oob.xap HTTP/1.1
> > > > If-Modified-Since: Tue, 16 Mar 2010 00:28:17 GMT
> > > > User-Agent: Silverlight
>
> > > > Thanks,
>
> > > > On Mar 15, 2:22 pm, Alkis Evlogimenos ('Αλκης Ευλογημένος)
> > > > <[email protected]> wrote:
> > > > > If-Modified-Since works in GAE. Either the server you are hitting
> > does
> > > > not
> > > > > support it, or you are sending it a timestamp it doesn't understand.
>
> > > > > - alkis
>
> > > > > On Mon, Mar 15, 2010 at 6:28 PM, JC <[email protected]> wrote:
> > > > > > GAE 1.3.1 for Java includes a fix (issue 575) to support
> > conditional
> > > > > > get for static files. I have tried sending If-Modified-Since Get
> > > > > > header to retrieve a static file from GAE, It always returns 200
> > (with
> > > > > > full payload) instead of 304 (unmodified) even though the static
> > file
> > > > > > hasn't been changed for a while. I have cleared my browser cache so
> > > > > > that the timestamp in the If-Modified-Since is current timestamp.
> > It
> > > > > > doesn't seem to work. Has anyone used If-Modified-Since on 1.3.1
> > with
> > > > > > success?
>
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