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PO
 

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  1. PO
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    <p>Its a <code>synchronous</code> method - i.e. it runs on the <strong>main thread</strong>. Therefore, your application will hang - and it'll wait till the data is downloaded. </p> <p>To prevent it: use the <code>sendAsynchronousRequest</code> method. It'll run this process on a background thread and won't disrupt your application or simply - won't make it <em>hang</em>.</p> <p>Here's how to use <code>sendAsynchronousRequest</code>:</p> <pre><code>NSURL *url = [NSURL URLWithString:@"YOUR_URL_HERE"]; NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url]; NSOperationQueue *queue = [[NSOperationQueue alloc] init]; [NSURLConnection sendAsynchronousRequest:urlRequest queue:queue completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) { //the NSData in the completion handler is where your data is downloaded. }]; </code></pre> <hr> <p>Considering all the circumstances, I think that the problem exists due to your delegate declaration. So declare <code>&lt;NSURLConnectionDataDelegate&gt;</code> and the declare an <code>NSMutableData</code> : <code>myData</code> object and an <code>NSURLConnection</code> : <code>urlConnection</code> as properties. Now use this : </p> <pre><code>NSURL *url = [NSURL URLwithString : @"YOUR_URL_HERE"]; NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url]; *urlConnection = [NSURLConnection connectionWithRequest:urlRequest delegate:self]; -(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { [myData setLength:0]; } -(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { [myData appendData:data]; } -(void)connectionDidFinishLoading:(NSURLConnection *)connection { //You can use the complete downloaded data - NSMutableData here. } </code></pre>
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    1. PONSURLConnection sendSynchronousRequest seems to hang
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    1. USSam Fischer
    1. USSam Fischer
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    1. COI think the OP wants to know why it *never* returns, not why it blocks the main thread...
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      1. UStrojanfoe
    2. COYep, @trojanfoe is correct. Thanks for the answer but it doesn't address my problem. I need to stay synchronous in this context.
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      1. USRichard Marr
    3. CO@RichardMarr - Your code worked fine on mine. Maybe you have some networking issues on your system.
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      1. USSam Fischer
 

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