Working example of accepting self-signed SSL certificate in Swift

gistfile1.swift

import UIKit
import Foundation

class ViewController: UIViewController, NSURLSessionDelegate {

    override func viewDidLoad() {
        super.viewDidLoad()

        httpGet(NSMutableURLRequest(URL: NSURL(string: "https://example.com")!))
    }

    func httpGet(request: NSMutableURLRequest!) {
            var configuration =
            NSURLSessionConfiguration.defaultSessionConfiguration()

            var session = NSURLSession(configuration: configuration, delegate: self, delegateQueue:NSOperationQueue.mainQueue())

            var task = session.dataTaskWithRequest(request){
                (data: NSData!, response: NSURLResponse!, error: NSError!) -> Void in
                if error == nil {
                    var result = NSString(data: data, encoding:
                        NSASCIIStringEncoding)!
                    NSLog("result %@", result)
                }
            }
            task.resume()
    }

    func URLSession(session: NSURLSession, didReceiveChallenge challenge: NSURLAuthenticationChallenge, completionHandler: (NSURLSessionAuthChallengeDisposition, NSURLCredential!) -> Void) {
        completionHandler(NSURLSessionAuthChallengeDisposition.UseCredential, NSURLCredential(forTrust: challenge.protectionSpace.serverTrust))
    }
}