#headers['Content-Range'] = 'bytes 0-{}/{}'.format(file_size - 1, file_size)
headers["Content-File-MD5"] = utils.md5(filename)
http_header = ['{}: {}'.format(key,val)
#headers['Content-Range'] = 'bytes 0-{}/{}'.format(file_size - 1, file_size)
headers["Content-File-MD5"] = utils.md5(filename)
http_header = ['{}: {}'.format(key,val)