self.authenticationOperation = [ApplicationDelegate.mainAuthenticator
                                authenticateWithUser:[usernameTextField text]
                                        withPassword:[passwordTextField text]];
NSString *responseData = [self.authenticationOperation responseString];
// This prints nothing at all, and I can't see anything with breakpoints.
// Only meaningless characters.
NSLog(@"RESPONSE: %@", responseData);

if ([responseData isEqualToString:@"2"]) {
    UIAlertView *inactiveSyntaxAlert=[[UIAlertView alloc]
                 initWithTitle:@"Login status"
                       message:@"Log in is unavailable. Please confirm your e-mail adress."
                      delegate:self cancelButtonTitle:@"I did, let me try again"
             otherButtonTitles:nil, nil, nil];
    [inactiveSyntaxAlert show];
}
else if([responseData isEqualToString:@"1"]) {
    NSLog(@"Login SUCCESS");
    UIAlertView *successSyntaxAlert=[[UIAlertView alloc]
                 initWithTitle:@"Login status" message:@"Logged in successfully"
                      delegate:self
             cancelButtonTitle:@"Thanks"
             otherButtonTitles:nil, nil, nil];
    [successSyntaxAlert show];
} else {
    NSLog(@"Login FAILED");
    UIAlertView *failureSyntaxAlert=[[UIAlertView alloc]
                 initWithTitle:@"Login status"
                       message:@"Log in failed"
                      delegate:self
             cancelButtonTitle:@"Ok"
             otherButtonTitles:nil, nil, nil];
    [failureSyntaxAlert show];
}

NSString *responseData = [self.authenticationOperation
                    responseStringWithEncoding:NSASCIIStringEncoding];
                NSLog(@"RESPONSE: %@", responseData);

-(NSString*)responseString {

  return [self responseStringWithEncoding:self.stringEncoding];
}

-(NSString*) description {

  NSMutableString *displayString = [NSMutableString stringWithFormat:@"%@nRequestn-------n%@",
                                    [[NSDate date] descriptionWithLocale:[NSLocale currentLocale]],
                                    [self curlCommandLineString]];

  NSString *responseString = [self responseString];
  if([responseString length] > 0) {
    // THIS IS WHERE THE RESPONSE IS.
    // According to this responseString is what I need.
    // Still there seems I am doing something wrong because
    // I can't get the value on MY code.
    [displayString appendFormat:@"n--------nResponsen--------n%@n", responseString];
  }

  return displayString;
}