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PONSURLConnection Sticky Cache
 

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    <p>I'm having an issue with a sticky cache when using NSURLConnection. I create a NSMutableURLRequest using the following line:</p> <pre><code> NSMutableURLRequest *request = [[NSMutableURLRequest alloc]initWithURL:url cachePolicy:NSURLRequestReloadIgnoringLocalAndRemoteCacheData timeoutInterval:60]; [request setHTTPMethod:@"POST"]; [request setValue:@"text/javascript,application/json,application/javascript;q=0.9,*/*;q=0.8" forHTTPHeaderField:@"Accept"]; [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"]; [request setValue:[NSString stringWithFormat:@"%d", [requestData length]] forHTTPHeaderField:@"Content-Length"]; [request setHTTPBody: requestData]; </code></pre> <p>I then make the connection like so:</p> <pre><code>NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:request delegate:self]; </code></pre> <p>On the surface everything works fine, it connects and pulls in the json object the server sends it's way. If I update the json object on the server so it contains another node and then via the App have it request the url like above, it returns a cached version of the json object. As proven by outputting the received data in </p> <pre><code>- (void)connectionDidFinishLoading:(NSURLConnection *)connection </code></pre> <p>I've tried to add a timestamp to the requested url but still received the cached version. I am resetting the receivedData var to nil before each request and reinit the var on connection:didReceiveData: but still getting the cached version.</p> <p>I even set up a delegate method to force no cache:</p> <pre><code>- (NSCachedURLResponse *) connection:(NSURLConnection *)connection willCacheResponse:(NSCachedURLResponse *)cachedResponse{ return nil; } </code></pre> <p>EDIT: I verified the changed response by hitting the requested URL in a browser, but even after that the app still uses the cached data.</p> <p>So my question is how can I completely destroy the cache? </p> <p>Thanks, Bruce</p>
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