public void UploadFile(string filename, string bucket, string key)
        {
            var config = new TransferUtilityConfig();
            var utility = new TransferUtility(this.s3Client, config);

            using (var temporaryFile = new TemporaryFile())
            using (var temporaryFileStream = File.Open(temporaryFile.FullPath, FileMode.CreateNew, FileAccess.ReadWrite))
            {
                using (var fileStream = File.OpenRead(filename))
                using (var compressedStream = new GZipStream(temporaryFileStream, CompressionMode.Compress, true))
                {
                    fileStream.CopyTo(compressedStream);
                }

                temporaryFileStream.Position = 0;

                var request = new TransferUtilityUploadRequest
                                  {
                                      AutoCloseStream = false,
                                      Timeout = -1,
                                      BucketName = bucket,
                                      Key = key,
                                      InputStream = temporaryFileStream,
                                      PartSize = 204800 // 2MB
                                  };
                request.WithStorageClass(S3StorageClass.Standard);

                request.UploadProgressEvent += (sender, args) => Console.Write(".");

                utility.Upload(request);
                Console.WriteLine("Done.");
            }
        }