摘要:
#pragma mark - test 断点下载 (记录上传、或下载的量)- (void) test { NSURL *urlStr = [NSURL URLWithString:@"htt/"]; NSMutableURLRequest *r = [[NSMutableURLRequest alloc]initWithURL:urlStr]; // [r setValue:@"10M-50M" forHTTPHeaderField:@"Range"]; //设置Http的请求头 [r setValue:@"50M-&quo 阅读全文