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POReturn custom NSURLResponse class
 

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  1. POReturn custom NSURLResponse class
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    <p>I try to return an object of a subclass of NSURLResponse in my custom NSURLProtocol, but it seems the returned response is always exchanged by a normal NSURLResponse.</p> <p>This is the part of the NSURLProtocol where I return my custom TestURLResponse:</p> <pre><code>TestURLResponse* response = [[[TestURLResponse alloc] initWithURL: [[self request] URL] MIMEType: @"text/plain" expectedContentLength: 4 textEncodingName:@"UTF-8"] autorelease]; [self.client URLProtocol:self didReceiveResponse:response cacheStoragePolicy:NSURLCacheStorageNotAllowed]; [self.client URLProtocol:self didLoadData: [@"Test" dataUsingEncoding:NSUTF8StringEncoding]]; [self.client URLProtocolDidFinishLoading: self]; </code></pre> <p>When I read something with this protocol I expect to get the response of type TestURLResponse, but in the following code I always get a NSURLResponse:</p> <pre><code> NSURLRequest* request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"test://test"]]; NSURLResponse* response; [NSURLConnection sendSynchronousRequest:request returningResponse:&amp;response error:nil]; NSString *className = NSStringFromClass([response class]); UIAlertView* alertView = [[UIAlertView alloc] initWithTitle:className message:className delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alertView show]; [alertView release]; </code></pre> <p>The whole test project can be downloaded at </p> <p><a href="http://ul.to/9yylk65s">http://ul.to/9yylk65s</a></p> <p>Right now I have no idea if I'm doing something wrong or if there is something broken. The documentation of NSURLProtocol states</p> <blockquote> <p>A protocol implementor may wish to create a custom, mutable NSURLResponse class to provide protocol specific information.</p> </blockquote> <p>but it seems to me, this isn't working at all.</p>
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    1. UScemonds
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      1. VTUpMod
    1. COI'm very confused by this. I downloaded your project and tried a few things, like implementing `-(id)initWithCoder:` and `-(id)copy` / `-(id)copyWithZone:` but nothing helped. The object is also never retained when passed to the url protocol client.
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      1. POReturn custom NSURLResponse class
      1. USAlfonso
    2. COAlso played around with your sample code, but didn't get anywhere. Since an entirely different response object is being sent to the connection delegate, I figured maybe it had to do with NSURLResponse's default `-copyWithZone:` behavior, but it's not even being called. Maybe this is a bug in Apple's NSURLProtocolClient implementation?
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      1. POReturn custom NSURLResponse class
      1. USCameron Spickert
    3. COThanks for your comments. I tried the whole day to find the place, where the NSURLResponse is exchanged, but I didn't find anything. Right now I also think this could be a bug in the apple implementation or in their documentation. Maybe I should ask in the apple developer forums and try to find some one from apple who can explain this.
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