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Re: loadHTMLString caching problems

Subject: Re: loadHTMLString caching problems
From: Alan Shouls <email@hidden>
Date: Tue, 1 Apr 2008 14:46:54 +0100
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Hi Darin

I have been trying to Google my way out of my problems and I came across a reply that you posted to somone who seemed to be having the same problems as me in 2003 http://lists.apple.com/archives/webkitsdk-dev/2003/Dec/msg00009.html

<-- snip -->

>[[myWebView backForwardList] setPageCacheSize:0];

This affects only the back/forward cache, which controls caching of entire web pages so that you can do a "go back" faster. That's not what's happening here.

>[modReq setCachePolicy:NSURLRequestReloadIgnoringCacheData];

This controls the Foundation URL loading caching.

>What am I missing?

The caching that's causing you trouble is the caching done in WebCore. This cache is not properly expiring things. And this caching happens before you get a willSendRequest: callback.

This is a bug in WebKit, and I don't know of a workaround. We plan to fix the WebCore cache expiration in the next Safari update.

<-- snip -->

Could you tell me if this is indeed the (same) bug that is affecting me.

Best regards

Alan Shouls

Hi
I have had some problems posting this to the list - but it seems to have worked.
I should say that in a modified form of
-(NSURLRequest *)webView:(WebView *)sender
        resource:(id)identifier
     willSendRequest:(NSURLRequest *)request
    redirectResponse:(NSURLResponse *)redirectResponse
      fromDataSource:(WebDataSource *)dataSource
I have also tried making copies of the images specified request, so they are uniquely named on the fly and in the /tmp directory and changed the response so that it 'points' to them. Still the cache refuses to release it's grip
Alan
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