Method getPayloadHash

plugins/origin_server_auth/aws_auth_v4.cc:714–718

* @brief: HTTP content / payload SHA 256 = Hex(SHA256Hash( ) * @return signature of the content or "UNSIGNED-PAYLOAD" to mark that the payload is not signed */

 * @return signature of the content or "UNSIGNED-PAYLOAD" to mark that the payload is not signed
 */
String
AwsAuthV4::getPayloadHash()
{
  return getPayloadSha256(_signPayload);
}

/**
 * @brief Get the value of the Authorization header (AWS authorization) v4