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PONSURLConnection very long downloading
 

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    <p>I'm facing problem with downloading 5 MB file, it taking more then 2 minutes on iPhone 5 with iOS 6.1. </p> <p>Using iPhone 4S with same iOS version it taking only 10 seconds, both are using WiFi. </p> <p>I have tried different cache Policy and timeout Interval of NSURLRequest, it changed nothing, it's still taking long time. Download is over HTTP.</p> <p>I'm using <strong>NSURLConnection</strong> class, before downloading this "big" file I'm downloading two others. </p> <p>Don't know what else can be important,to reduce the time.</p> <p>Thanks in advance.</p> <p>Code:</p> <pre><code>@interface MyClass : NSObject &lt;NSURLConnectionDelegate&gt; { @private id delegate; NSURLConnection *connection; NSMutableData* responseData; //... } #import "MyClass.h" @implementation MyClass -(void)getObj1:(id)delegateObj { delegate = delegateObj; NSString *url = @"..."; NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:url] cachePolicy:NSURLRequestReloadIgnoringLocalAndRemoteCacheData timeoutInterval:120.0]; connection = [[NSURLConnection alloc] initWithRequest:request delegate:self]; if(connection) { responseData = [NSMutableData data]; } } -(void)getObj2:(*String)somesString { NSString *url = @"..."; NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:url] cachePolicy:NSURLRequestReloadIgnoringLocalAndRemoteCacheData timeoutInterval:120.0]; connection = [[NSURLConnection alloc] initWithRequest:request delegate:self]; if(connection) { responseData = [NSMutableData data]; } } -(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { //.... } -(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { [responseData appendData:data]; } - (void)connectionDidFinishLoading:(NSURLConnection *)connection { if(firstRequest) { //save data from first request and set responseData clear [self getObj2:@"..."]; } } </code></pre> <p>and others without anything special, I hope this will be enough</p> <p>I have found this post <a href="https://devforums.apple.com/message/754875#754875" rel="noreferrer">https://devforums.apple.com/message/754875#754875</a> but still doesn't work fine for me. However now I better understand this strange situation.</p>
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    1. COYour code is important. If you could post how you create and start the request, and the delegate methods.
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    2. COAny idea? Maybe this link from my edit will help, I'm out of ideas
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      1. USMeryl
    3. COYou should rather create _two_ objects of your `MyClass` in order to perform _two_ different downloads. You can quickly confuse the ivars. Also, ensure that you invoke [[NSURLConnection alloc] init ...] on that thread where you want the delegate to be executed. Possibly the main thread - otherwise you need to know how to setup a secondary thread for that purpose which is a bit tricky.
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