Resolve redirect of NSURL?

Question

I have a shortened URL (e.g. t.co/12345678). I would like to resolve the redirect without having to the load the entire page via NSURLConnection. Obviously, I can get it by sending an NSURLConnection and awaiting the response but this loads the entire page first. I am only looking for the redirect URL. Is this possible? If so, how?

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Edit: For posterity, here is the solution, as suggested by amleszk.

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:shortenedURL
                                         cachePolicy:NSURLRequestReloadIgnoringCacheData
                                     timeoutInterval:15.0f];

[request setHTTPMethod:@"HEAD"];

[NSURLConnection sendAsynchronousRequest:request
                                   queue:[NSOperationQueue mainQueue]
                       completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
                           NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse*)response;
                           NSURL *resolvedURL = [httpResponse URL];
                           NSLog(@"%@", resolvedURL);
                       }];

score 5 · Accepted Answer · edited May 23 '17 at 12:13

5

same method as this: finding the download size of a URL (Content-Length)

but you want the [NSURLResponse statusCode] = 301/302/303 and the Location header here: Getting "Location" header from NSHTTPURLResponse

edited May 23 '17 at 12:13

Community

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answered Apr 01 '12 at 00:16

amleszk

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Hmm, the status code returned is 200 and the http header response does not contain the redirect URL. The response URL also only contains the original URL... – Keller Apr 01 '12 at 00:34
Oops, it was a caching issue. Worked like a charm, thanks a lot! – Keller Apr 01 '12 at 19:18

Resolve redirect of NSURL?

1 Answers1