If you have SSI enabled on your server the Last-modified header won't
be sent, it should be sent for all static pages.
On Dec 18, 5:15 pm, Magnificent
<imightbewrongbutidontthin...@gmail.com> wrote:
> I'm making some progress, if I include the following:
>
> <?php
> $last_modified = filemtime("test.txt");
> header("Last-Modified: " . $last_modified);
> ?>
>
> I get a response header with:
> Last-Modified 1229624249
>
> If I then wait a bit and make a change to cause test.txt to be
> updated, I get:
>
> Last-Modified 1229627412
>
> So I'm definitely getting the Last-Modified header sent but all the
> responses still show up as 200. I should be getting 304s until
> test.txt is updated, then get one 200, then more 304s until test.txt
> is update again, right?
>
> On Dec 18, 11:05 am, Mike Alsup <mal...@gmail.com> wrote:
>
> > > I take it back, my livedata_fetch.php is coming back with a 200
> > > status, but I want it coming back with a 304 not modified, right?
> > > That means it'll only fetch the file if it's been updated since the
> > > last time it was fetched?
>
> > Right. The server needs to set the Last-Modified header for this to
> > work correctly. If it does, jQuery will use that date/time in the If-
> > Modified-Since header. If the resource has not been modified then the
> > server should return an empty response body with a 304 status.
