private void PrepareParameters(AntCloudClientRequest request)
{
request.PutParameter(SDKConstants.ParamKeys.ACCESS_KEY, _accessKey);
request.PutParameterIfAbsent(SDKConstants.ParamKeys.SIGN_TYPE, SDKConstants.DEFAULT_SIGN_TYPE);
request.PutParameterIfAbsent(SDKConstants.ParamKeys.REQ_MSG_ID, SdkUtils.GenerateReqMsgId());
request.PutParameterIfAbsent(SDKConstants.ParamKeys.REQ_TIME, SdkUtils.FormatDate(DateTime.UtcNow));
var signType = request.GetParameter(SDKConstants.ParamKeys.SIGN_TYPE);
if (!signType.Equals(SDKConstants.DEFAULT_SIGN_TYPE, StringComparison.OrdinalIgnoreCase) &&
!signType.Equals(SDKConstants.SIGN_TYPE_SHA256))
{
throw new ArgumentException("wrong sign type");
}
if (!string.IsNullOrWhiteSpace(_securityToken))
{
request.PutParameterIfAbsent(SDKConstants.ParamKeys.SECURITY_TOKEN, _securityToken);
}
request.PutParameterIfAbsent(SDKConstants.ParamKeys.BASE_SDK_VERSION, SDKConstants.BASE_SDK_VERSION_VALUE);
var sign = ComputeSign(request.GetParameters(), signType, _accessSecret, SDKConstants.SIGN_CHARSET);
request.PutParameter(SDKConstants.ParamKeys.SIGN, sign);
}
private async Task <AntCloudClientResponse> SendRequest(AntCloudClientRequest request)
{
var retried = 0;
var parameters = request.GetParameters();
var message = BuildRequest(_endpoint, parameters);
while (true)
{
RequestSending?.Invoke(this, parameters);
var response = await _httpClient.SendAsync(message);
var responseString = await response.Content.ReadAsStringAsync();
ResponseRead?.Invoke(this, responseString);
JObject wholeJson;
try
{
wholeJson = JObject.Parse(responseString);
}
catch (JsonReaderException e)
{
if (_enableAutoRetry && retried < _autoRetryLimit)
{
retried += 1;
continue;
}
throw new ClientException(SDKConstants.ResultCodes.RESPONSE_FORMAT_ERROR, e.Message);
}
if (wholeJson == null)
{
throw new ClientException(SDKConstants.ResultCodes.TRANSPORT_ERROR, "Unexpected gateway response: " + responseString);
}
var responseNode = wholeJson["response"] as JObject;
if (responseNode == null)
{
throw new ClientException(SDKConstants.ResultCodes.TRANSPORT_ERROR, "Unexpected gateway response: " + responseString);
}
var result = AntCloudClientResponse.Create(responseNode);
if (result.IsSuccess && _checkSign)
{
var sign = wholeJson.Value <string>(SDKConstants.ParamKeys.SIGN);
var target = ExtractStringToSign(responseString);
var calculatedSign = ComputeSign(target, request.GetParameter(SDKConstants.ParamKeys.SIGN_TYPE), _accessSecret, SDKConstants.SIGN_CHARSET);
if (!calculatedSign.Equals(sign))
{
throw new ClientException(SDKConstants.ResultCodes.BAD_SIGNATURE, "Invalid signature in response");
}
}
return(result);
}
}