fun main(args: Array<String>) {
    autoreleasepool {
        runApp("https://feeds.feedburner.com/kotlin")
    }
}

private fun runApp(url: String) {
    println("runApp called")

    val session = NSURLSession.sessionWithConfiguration(
        NSURLSessionConfiguration.defaultSessionConfiguration(),
        object : NSObject(), NSURLSessionDataDelegateProtocol {
            override fun URLSession(session: NSURLSession, dataTask: NSURLSessionDataTask, didReceiveResponse: NSURLResponse, completionHandler: (NSURLSessionResponseDisposition) -> Unit) {
                println("didReceiveResponse called")

                completionHandler(NSURLSessionResponseAllow)
            }
            override fun URLSession(session: NSURLSession, dataTask: NSURLSessionDataTask, didReceiveData: NSData) {
                println("didReceiveData called")
            }
            override fun URLSession(session: NSURLSession, task: NSURLSessionTask, didCompleteWithError: NSError?) {
                println("didCompleteWithError called")
            }
        },
        delegateQueue = NSOperationQueue.mainQueue()
    )
    session.dataTaskWithURL(NSURL(URLString = url)).resume()
}