Get cookies from NSHTTPURLResponse

Did you tried following code sample, it should work:

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
    NSArray *cookies =[[NSArray alloc]init]; 
    cookies = [NSHTTPCookie 
        cookiesWithResponseHeaderFields:[response allHeaderFields] 
        forURL:[NSURL URLWithString:@""]]; // send to URL, return NSArray
}

Try this code:

for (NSHTTPCookie *cookie in [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies])
{
    NSLog(@"name: '%@'\n",   [cookie name]);
    NSLog(@"value: '%@'\n",  [cookie value]);
    NSLog(@"domain: '%@'\n", [cookie domain]);
    NSLog(@"path: '%@'\n",   [cookie path]);
}

@biloshkurskyi.ss answer is spot on.

I spent half a day trying to find out why some of my cookies were not appearing in my response.allHeaderFields on iOS but it was there on Android (using the same service).

The reason is because some cookies are extracted in advance and stored in the shared cookie store. They will not appear in allHeaderFields.

Here's the swift 3 version of the answer if anyone needs it:

let request = URLRequest(url: myWebServiceUrl)
let session = URLSession.shared
let task = session.dataTask(with: request, completionHandler: {
    (data, response, error) in
    if let error = error {
        print("ERROR: \(error)")
    } else {
        print("RESPONSE: \(response)")
        if let data = data, let dataString = String(data: data, encoding: .utf8) {
            print("DATA: " + dataString)
        }
        for cookie in HTTPCookieStorage.shared.cookies! {
            print("EXTRACTED COOKIE: \(cookie)") //find your cookie here instead of httpUrlResponse.allHeaderFields
        }
    }
})
task.resume()