Here's a version that parses out the files and directories using Hpple.

getFilesAndDirs.m

#import "AFNetworking.h"
#import "TFHpple.h"

    NSString *baseURLString = @"http://gd2.mlb.com/components/game/mlb/year_2013/month_06/day_01/gid_2013_06_01_wasmlb_atlmlb_1/";
    
    NSMutableArray *files = [@[] mutableCopy];
    NSMutableArray *dirs = [@[] mutableCopy];

    NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:baseURLString]];
    AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
    [operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject){

        TFHpple *html = [TFHpple hppleWithHTMLData:responseObject];

        NSArray *entities = [html searchWithXPathQuery:@"//a"];

        //skip the first a tag (it's the link to parent dir)
        for (int i=1; i<[entities count]; i++) {
            TFHppleElement *element = entities[i];
            NSString *href = [element objectForKey:@"href"];
            NSString *fullUrl = [NSString stringWithFormat:@"%@%@", baseURLString, href];
            if ([fullUrl hasSuffix:@"/"]) {
                [dirs addObject:fullUrl];
                NSLog(@"directory = %@", fullUrl);
            } else {
                [files addObject:fullUrl];
                NSLog(@"file = %@", fullUrl);
            }
        }
        
    }failure:^(AFHTTPRequestOperation *operation, NSError *error){
        
        NSLog(@"failure");
        NSLog(@"%@", error.localizedDescription);
    }];
    
    [operation start];