private async Task <HttpRequestMessage> PreparePutRequestAsync(byte[] byteArr, string filename)
{
AwsV4SignatureCalculator calculator = new AwsV4SignatureCalculator(_secretKey, _service, _region);
HttpRequestMessage requestMessage = new HttpRequestMessage(HttpMethod.Put, new Uri($"{_protocol}://{_endpoint}/{_bucketName}/{_supPath}/{filename}"));
DateTime now = DateTime.UtcNow;
var dateTimeStamp = now.ToString(AwsV4SignatureCalculator.Iso8601DateTimeFormat, CultureInfo.InvariantCulture);
var dateStamp = now.ToString(AwsV4SignatureCalculator.Iso8601DateFormat, CultureInfo.InvariantCulture);
ByteArrayContent content = new ByteArrayContent(byteArr);
requestMessage.Content = content;
var hash = await AwsV4SignatureCalculator.GetPayloadHashAsync(requestMessage);
string[] headers = AddStandardHeadersToRequest(requestMessage, dateTimeStamp, hash);
string signature = await calculator.CalculateSignatureAsync(requestMessage, headers, now);
string authHeader = GetAuthHeader(dateStamp, headers, signature);
requestMessage.Headers.TryAddWithoutValidation("Authorization", authHeader);
return(requestMessage);
}
