Downloading Image Swift - image

Question

I want to download an image from Facebook and store it to my cache, which I call over HTTPS. If I just use HTTP everything works fine, but if I change it to HTTPS it does not work anymore.
Here is my code:
// Grab the artworkUrl key to get an image URL for thumbnail
var urlString: NSString = rowData["cover"] as NSString
// Check our image cache for the existing key. This is just a dictionary of UIImages
var image: UIImage? = self.imageCache.valueForKey(urlString) as? UIImage
if( !image? ) {
// If the image does not exist, we need to download it
var imgURL: NSURL = NSURL(string: urlString)
// Download an NSData representation of the image at the URL
var request: NSURLRequest = NSURLRequest(URL: imgURL)
var urlConnection: NSURLConnection = NSURLConnection(request: request, delegate: self)
NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue.mainQueue(), completionHandler: {(response: NSURLResponse!,data: NSData!,error: NSError!) -> Void in
if !error? {
//var imgData: NSData = NSData(contentsOfURL: imgURL)
image = UIImage(data: data)
// Store the image in to our cache
self.imageCache.setValue(image, forKey: urlString)
cell.image = image
println(self.imageCache)
}
else {
println("Error: \(error.localizedDescription)")
}
})
}
else {
cell.image = image
}
})
The URL I want to use is this:
https://fbcdn-sphotos-d-a.akamaihd.net/hphotos-ak-xpf1/t1.0-9/q71/s720x720/995054_485489274919674_7207866955460529362_n.jpg
The Error is a "Timeout".
With this URL everything works fine:
http://fbcdn-sphotos-d-a.akamaihd.net/hphotos-ak-xpf1/t1.0-9/q71/s720x720/995054_485489274919674_7207866955460529362_n.jpg
Thanks,
Tobias

Answer 1

From what I can tell NSURLConnection sometimes runs into trouble with HTTPS connections. Try adding these two methods to your class (and mark it as NSURLConnectionDelegate) (from this answer):
func connection(connection: NSURLConnection!, canAuthenticateAgainstProtectionSpace protectionSpace: NSURLProtectionSpace!) -> Bool {
return true
}
func connection(connection: NSURLConnection!, didReceiveAuthenticationChallenge challenge: NSURLAuthenticationChallenge!) {
challenge.sender.useCredential(NSURLCredential(forTrust: challenge.protectionSpace.serverTrust), forAuthenticationChallenge: challenge)
}