Amazon.S3.Model.GetObjectResponse.ValidateWrittenStreamSize C# (CSharp) Method

        private void ValidateWrittenStreamSize(long bytesWritten)
        {
#if !PCL
            // Check if response stream or it's base stream is a AESDecryptionStream
            var stream = Runtime.Internal.Util.WrapperStream.SearchWrappedStream(this.ResponseStream,
                (s => s is Runtime.Internal.Util.DecryptStream));

            // Don't validate length if response is an encrypted object. 
            if (stream!=null)
               return;
#endif
            if (bytesWritten != this.ContentLength)
            {
                string amzId2;                
                if(!this.ResponseMetadata.Metadata.TryGetValue(HeaderKeys.XAmzId2Header, out amzId2))
                    amzId2 = string.Empty;

                string amzCfId;
                if(!this.ResponseMetadata.Metadata.TryGetValue(HeaderKeys.XAmzCloudFrontIdHeader, out amzCfId))
                    amzCfId = string.Empty;

                string message = null;
                if (string.IsNullOrEmpty(amzCfId))
                {
                    message = string.Format(CultureInfo.InvariantCulture,
                    "The total bytes read {0} from response stream is not equal to the Content-Length {1} for the object {2} in bucket {3}." +
                    " Request ID = {4} , AmzId2 = {5}.",
                    bytesWritten, this.ContentLength, this.Key, this.BucketName, this.ResponseMetadata.RequestId, amzId2);
                }
                else
                {
                    message = string.Format(CultureInfo.InvariantCulture,
                    "The total bytes read {0} from response stream is not equal to the Content-Length {1} for the object {2} in bucket {3}." +
                    " Request ID = {4} , AmzId2 = {5} , AmzCfId = {6}.",
                    bytesWritten, this.ContentLength, this.Key, this.BucketName, this.ResponseMetadata.RequestId, amzId2, amzCfId);
                }
                

                throw new StreamSizeMismatchException(message, this.ContentLength, bytesWritten, this.ResponseMetadata.RequestId, amzId2, amzCfId);
            }
        }