Catching auth response

gistfile1.m

@implementation ViewController

// NSURLConnection Delegates
- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge {
    if ([challenge previousFailureCount] == 0) {
        NSLog(@"received authentication challenge");
        NSURLCredential *newCredential = [NSURLCredential credentialWithUser:@"USER"
                                                                    password:@"PASSWORD"
                                                                 persistence:NSURLCredentialPersistenceForSession];
        NSLog(@"credential created");
        [[challenge sender] useCredential:newCredential forAuthenticationChallenge:challenge];
        NSLog(@"responded to authentication challenge");
    }
    else {
        NSLog(@"previous authentication failure");
    }
}

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
    NSLog(@"didReceiveResponse");
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
    NSLog(@"didReceiveData");
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
    NSLog(@"connectionDidFinishLoading");
}

- (void)viewDidLoad {
    [super viewDidLoad];
    
    NSString *username = @"hello";
    NSString *password = @"world";
    
    NSString *authenticationString = [NSString stringWithFormat:@"%@:%@", username, password];
    NSData *authenticationData = [authenticationString dataUsingEncoding:NSASCIIStringEncoding];
    NSString *authenticationValue = [authenticationData base64Encoding];
    
    // Setup NSURLConnection
    NSURL *URL = [NSURL URLWithString:@"http://localhost:3000"];
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:URL];
    [request setValue:[NSString stringWithFormat:@"Basic %@", authenticationValue] forHTTPHeaderField:@"Authorization"];
    
    NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
    [connection start];
}

@end