nsurlsession

I have this kind of code below func upload(){ let img = UIImage(named: "1") let imgData = UIImageJPEGRepresentation(img!, 1) let data = imgData?.base64EncodedString() var request = URLRequest(url: URL(string: url)!) request.httpMethod = "POST" request.setValue("\(auth)", forHTTPHeaderField: "Authorization") request.setValue("application/xml", forHTTPHeaderField: "Content-Type") var postString = "<uploadrequest>" postString += "<folderid>123</folderid>" postString += "<folder_name>images</folder_name>" postString += "<image_byte>\(data!)</image_byte>" postString += "</uploadrequest>" request

I'm trying to reach the file which I was downloading earlier by NSURLSession . It seems I can't read the location of the file, even though I'm doing it before delegate method ends (as the file is temporary). Still, I'm getting nil when trying to access the data under location returned from NSURLSession delegate and error 257. The code goes as following: - (void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionDownloadTask *)downloadTask didFinishDownloadingToURL:(NSURL *)location { NSError *movingError = nil; NSData *fileData = [NSData dataWithContentsOfFile:location.path options:0

It seems that when you enqueue too many tasks (say, hundreds) on a background NSURLSession , it doesn't work well. How can you keep the number of enqueued tasks at a small fixed number, say 10? In the class that is responsible for enqueueing tasks, have a ivar to track the active tasks, e.g. // In MySessionWrapper.m @interface MySessionWrapper () { NSMutableSet *activeTaskIds; } @end When you enqueue a task, you add its ID to that set: [activeTaskIds addObject:@([task taskIdentifier])] When you get a didComplete callback, you remove the ID, and if the number of active tasks falls below your

I have the following code : let urlPath:String = apiURL + apiVersion + url + "?api_key=" + apiKey let url = NSURL(string: urlPath) let session = NSURLSession.sharedSession() println(url!) let task = session.dataTaskWithURL(url!, completionHandler: {(data, reponse, error) in println("Task completed") // rest of the function... }) The completionHandler function is never called. I tried calling the URL in my browser, it works fine. I tried with another URL, it still doesn't work. I checked that my ios simulator could connect to the Internet, it does. I don't know why the function is not called

I'm trying to post some info to my PHP file from Swift. My php file is executed, but the posted variables just don't get through to the php file. What am I doing wrong? Swift code: @IBAction func buttonPress(sender: AnyObject) { let request = NSMutableURLRequest(URL: NSURL(string: "http://www.domain.com/php_swift_test/insert.php")!) request.HTTPMethod = "POST" let postString = "a=test&b=bla" request.HTTPBody = postString.dataUsingEncoding(NSUTF8StringEncoding) let task = NSURLSession.sharedSession().dataTaskWithRequest(request) { data, response, error in if error != nil { print("error=\(error)