NSURLSession delegate methods not called - nsurlconnection

Question

I have created a very simple app to download a text file from my web server. I have this working perfectly with NSURLConnection, but am trying to migrate over to NSURLSession instead.
The issue I am having is that none of the delegate methods are being called.
My server is password protected so I need to use the basic http authentication to access the file, but when the didReceiveChallenge method is never called.
The line of code [getFileTask resume] seems to have no effect on anything.
My setup is as follows:
#interface ViewController : UIViewController <NSURLSessionDelegate, NSURLSessionDownloadDelegate, NSURLSessionTaskDelegate>
{
NSURLSession *session;
}
The following method is called from viewDidLoad:
-(void)setUpTheNetworking
{
NSString *fileURL = #"www.mywebsite.com/utility/file.txt";
NSURLSessionConfiguration *sessionConfig = [NSURLSessionConfiguration defaultSessionConfiguration];
sessionConfig.allowsCellularAccess = YES;
sessionConfig.timeoutIntervalForRequest = 10;
sessionConfig.timeoutIntervalForResource = 10;
sessionConfig.HTTPMaximumConnectionsPerHost = 1;
session = [NSURLSession sessionWithConfiguration:sessionConfig delegate:self delegateQueue:nil];
NSURLSessionDownloadTask *getFileTask = [session downloadTaskWithURL:[NSURL URLWithString:fileURL]];
[getFileTask resume];
}
The delegate methods I have implemented are:
-(void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionDownloadTask *)downloadTask didWriteData:(int64_t)bytesWritten totalBytesWritten:(int64_t)totalBytesWritten totalBytesExpectedToWrite:(int64_t)totalBytesExpectedToWrite
{
NSLog(#"Here we go");
}
-(void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionDownloadTask *)downloadTask didResumeAtOffset:(int64_t)fileOffset expectedTotalBytes:(int64_t)expectedTotalBytes
{
NSLog(#"Here we go");
}
-(void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionDownloadTask *)downloadTask didFinishDownloadingToURL:(NSURL *)location
{
NSLog(#"Here we go");
}
- (void)URLSession:(NSURLSession *)session didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential *credential))completionHandler
{
if (challenge.previousFailureCount == 0)
{
NSURLCredentialPersistence persistence = NSURLCredentialPersistenceForSession;
NSURLCredential *credential = [NSURLCredential credentialWithUser:user password:#password persistence:persistence];
completionHandler(NSURLSessionAuthChallengeUseCredential, credential);
}
else
{
// handle the fact that the previous attempt failed
NSLog(#"%s: challenge.error = %#", __FUNCTION__, challenge.error);
completionHandler(NSURLSessionAuthChallengeCancelAuthenticationChallenge, nil);
}
}
- (void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task
didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge
completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential *credential))completionHandler
{
{
if (challenge.previousFailureCount == 0)
{
NSURLCredential *credential = [NSURLCredential credentialWithUser:user password:password persistence:NSURLCredentialPersistenceForSession];
completionHandler(NSURLSessionAuthChallengeUseCredential, credential);
}
else
{
NSLog(#"%s; challenge.error = %#", __FUNCTION__, challenge.error);
completionHandler(NSURLSessionAuthChallengeCancelAuthenticationChallenge, nil);
}
}
}
Thanks!

Answer 1

SOLVED!
The following line of code was the culprit:
NSString *fileURL = #"www.mywebsite.com/utility/file.txt";
Turns out it needed http:// in there as well, so this one works
NSString *fileURL = #"http://www.mywebsite.com/utility/file.txt";
It still seems weird to me that it just didn't work. I would have expected an error to popup.