#import <BETURLSession.h>

  NSURLSession * session = [NSURLSession bet_sessionWithName:@"Random" baseURLString:@"http://httpbin.org"];

  NSMutableArray * bigData = @[].mutableCopy;
  for (NSInteger i = 0; i!=50000; i++) [bigData addObject:@(i)];

  NSURLSessionTask * task = [session bet_taskPOSTResource:@"post" 
                                               withParams:@{@"POST" : bigData} 
                                               completion:^(BETResponse *response) {
    NSLog(@"POST completed with code %@ & error %@", 
                @(response.HTTPURLResponse.statusCode), 
                  response.error
          );
  }];

  BETURLSessionTaskProgressHandlerBlock (^progressHandlerWithName)(NSString *) = ^BETURLSessionTaskProgressHandlerBlock(NSString * name) {
    return ^(NSURLSessionTask *task, NSInteger bytes, NSInteger totalBytes, NSInteger totalBytesExpected) {
      NSLog(@"%@ : %@ <-> %@ <-> %@", name, @(bytes), @(totalBytes), @(totalBytesExpected));
    };
  };



  [task bet_setUploadProgressHandler:progressHandlerWithName(@"Upload")];

  [task bet_setDownloadProgressHandler:progressHandlerWithName(@"Download")];

  [task resume];