AFNetworking - Why does the asynchronous XML operation not fire and the loop runs infinitely?
- (void)fetchActiveUser:(NSString*)username withPassword:(NSString *)password {

    [self setAuthorizationHeaderWithUsername:username password:password];

    // SETS FLAG that we are performing a request
    fetchModeActive = TRUE;

    [self getPath:kTLActiveUserURI parameters:nil success:^(AFHTTPRequestOperation
      *operation, id responseObject) {

    if ([responseObject isKindOfClass:[NSXMLParser class]]) {
        TLPersonParser *personParser = [[TLPersonParser alloc]
          initWithParser:responseObject];

        [personParser setDelegate: self];
        [personParser parsePeople];

        [personParser release];

    }
    // handle stuff here.
    NSLog(@"Success!");
    fetchModeActive = FALSE;
    [[NSNotificationCenter defaultCenter]
      postNotificationName:kTLFetchedActiveUserNotification object:nil];


    }
    failure:^(__unused AFHTTPRequestOperation *operation, NSError *error) {
      NSLog(@"Failure.");
      fetchModeActive = FALSE;
      [[NSNotificationCenter defaultCenter]
        postNotificationName:kTLFetchedActiveUserNotification object:error];
    }];


    while(self.fetchModeActive) {
        // WHY DOES THIS RUN INFINITELY?
        // Both above Success: & Failure: blocks set fetchModeActive = FALSE
        // when complete
        NSLog(@"fetching....");
    }

}