code: def compare_local_remote_bytes(self, remotefile, localfile, remote_headers=None):
          
          is_equal = True
          remote_size = self.get_remote_content_len(remotefile, remote_headers)
          local_size = self.get_local_file_size(localfile)
          if remote_size is not None and local_size != int(remote_size):
              is_equal = False
              LOG.error(
                  'local file and remote file different sizes\n'
                  '%s has size %s, %s has size %s',
                  localfile, local_size, remotefile, remote_size)
          return is_equal
docs: test to see if fetched file is the same size as the remote file
          using information in the content-length field in the HTTP header
          :return: True or False