I just wanted to say that I still have this issue, and that it does
not only seem to be the tiles that are struggeling to load. It seems
that other resources are also slow to load (other images, etc.), so it
seems to be a general problem where HTTP requests time out. However,
it does not seem to be the _response_ that is slow, but the requests;
When monitoring the requests, I see that it can go several seconds
between each HTTP request is fired, but the response is quick.

I was thinking that it might be something with application pool
recycling after idle time, but the problem was still there when I made
a dummy service and called it every 30 sec just to keep poking the
server (and hopefully keep the connection alive).

Just to top it off: This seems to be a sporadic problem. I might think
that I have solved it, but then it comes back the next time I try.

Any more suggestions on what I should try?

On May 19, 1:19 pm, KnutMarius <[email protected]> wrote:
> Yes, I tried adding a random parameter to each URL, but the issue is
> unfortunately still the same.
>
> On May 14, 2:53 pm, Björn Brala <[email protected]> wrote:
>
>
>
>
>
> > Nah, i ment like a PHP caching script.
>
> > Anyways, what if you append something random to force no caching in Internet
> > explorer? Like: &time=[randomnumber]
>
> > Does the issue persist then?
>
> > 2010/5/14 KnutMarius <[email protected]>
>
> > > Well, yes: Google is between. I don't know exactly what happens
> > > between the point where I set the URL and they are executed by the
> > > Google Maps API.
>
> > > /Knut Marius
>
> > > On May 12, 4:56 pm, Björn Brala <[email protected]> wrote:
> > > > That is extremely weird, sounds like a session problem. Is their any
> > > script
> > > > between the WMS and client? (php caching or what ever)
>
> > > > 2010/5/12 KnutMarius <[email protected]>
>
> > > > > I have an application where I use a Google map and a GTileLayer to
> > > > > draw PNG overlays provided by a WMS server. It works perfectly all the
> > > > > time, except when I use Internet Explorer 8 and let the application
> > > > > run in the browser without any activity for more than about 10
> > > > > minutes. When I return from the idle period and do some action on the
> > > > > map (for instance zoom in), some of the tile overlays fail to load. I
> > > > > look at the traffic of requests in the browser, and usually it is
> > > > > about 20 tile requests to gmaps and 20 tile requests to my WMS server.
> > > > > But in the case of zooming after idle time it is only requested about
> > > > > 8tiles. Whichtilesare loaded and whichtilesare not seems to be
> > > > > random. The issue disappears if I zoom again. It does only seems to
> > > > > affect the first thing I do when returning from an idle period.
>
> > > > > To me this seems to be some kind of timeout (or possibly cache?)
> > > > > issue, but I can't quite figure out why a timeout would make _some_ of
> > > > > thetilesload. Also I was surprised to see that the requests for the
> > > > > missingtileswere not run at all. At first I figured that it must be
> > > > > the server that is not delivering what it is supposed to do, but now
> > > > > it seems this is a client-side issue since the missingtilesare never
> > > > > requested.
>
> > > > > In my javascript code I have overridden the getTileUrl() method of the
> > > > > GTileLayer object in order to generate the correct request URL for
> > > > > each tile. I have debugged out the URLs, and it seems that all of them
> > > > > are generated properly (meaning that Google runs the method for all
> > > > > the 20tiles).
>
> > > > > So does it make any sense that only some of these URLs are actually
> > > > > run? I have tried to test this in both IE8, Firefox 4 and Chrome 4,
> > > > > and so far I have only been able to reproduce the issue in IE8.
>
> > > > > All hints and help will be appreciated!
>
> > > > > --
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> > > > --
> > > > Bjorn Brala
> > > > ----------------www.GeoStart.nl/english/-Googlemaps - Swis
> > > Webdesignwww.twitter.com/bbrala
>
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> > --
> > Bjorn Brala
> > ----------------www.GeoStart.nl/english/-Google maps - Swis 
> > Webdesignwww.twitter.com/bbrala
>
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