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POWhy is ASIDownloadCache cached data always be used?
 

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  1. POWhy is ASIDownloadCache cached data always be used?
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    <p>I am using ASIDownloadCache to cache the download files, the code below is how I set the request and downloadcache. `request = [super initWithURL:url1]; [request setTimeOutSeconds:50];</p> <pre><code>ASIDownloadCache *cache = [[ASIDownloadCache alloc] init] ; [cache setStoragePath:[path stringByAppendingPathComponent:@"resource"]]; [cache setShouldRespectCacheControlHeaders:NO]; self.myCache = cache; [cache release]; [request setDownloadCache:self.myCache]; //[self setSecondsToCache:60*60*24*30]; [request setCachePolicy:ASIAskServerIfModifiedCachePolicy]; [request setCacheStoragePolicy:ASICachePermanentlyCacheStoragePolicy]; </code></pre> <p>` My problem is that when the url's header has been modified, the ASIDownloadCache is still using the cached data. Why? Someone knows the answer?</p> <p>The header of that url before changing is like the following:</p> <p>HTTP/1.1 200 OK Server: Apache/2.2 Cache-Control: public Content-Type: text/html; charset=UTF-8 Date: Mon, 07 Nov 2011 08:26:15 GMT Expires: Mon, 07 Nov 2011 08:23:35 GMT Pragma: public Transfer-Encoding: chunked Etag: 1320654215 Connection: Keep-Alive Last-Modified: Mon, 07 Nov 2011 08:23:35 GMT</p> <p>The header after modifying is like the following:</p> <p>HTTP/1.1 200 OK Server: Apache/2.2 Cache-Control: public Content-Type: text/html; charset=UTF-8 Date: Mon, 07 Nov 2011 08:28:49 GMT Expires: Mon, 07 Nov 2011 08:28:32 GMT Pragma: public Transfer-Encoding: chunked Etag: 1320654512 Connection: Keep-Alive Last-Modified: Mon, 07 Nov 2011 08:28:32 GMT</p> <p>Even the Last-Modified fields are not the same, it is still using the cached data. </p>
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    1. COUse charlesproxy or similar to capture the request that ASIHTTPRequest is sending, and the response from the server, and add that into your question.
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      1. POWhy is ASIDownloadCache cached data always be used?
      1. USJosephH
    2. COThe headers are listed, is there anything wrong with the header?
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      1. POWhy is ASIDownloadCache cached data always be used?
      1. USTerry
    3. COThey look okay; I think you'll need to step through the code and see why it's deciding to use the cached data. breakpoint within readResponseHeaders and step through canUseCachedDataForRequest
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      1. POWhy is ASIDownloadCache cached data always be used?
      1. USJosephH
 

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