signature = hex.EncodeToString(sumHMAC(signingKey, []byte(stringToSign)))

		stream = append(stream, []byte(fmt.Sprintf("%x", n)+";chunk-signature="+signature+"\r\n")...)
		stream = append(stream, buffer[:n]...)
		stream = append(stream, []byte("\r\n")...)

		if n <= 0 {
			break
		}

	}
	req.Body = io.NopCloser(bytes.NewReader(stream))
	return req, nil
}

	start := time.Now()
	stream, err := handler.Call(context.Background(), remoteConn, &testRequest{Num: 1, String: testPayload})
	errFatal(err)
	go func() {
		defer close(stream.Requests)
		for i := 0; i < payloads; i++ {
			// t.Log("sending new client request")
			stream.Requests <- &testRequest{Num: i, String: testPayload}
		}
	}()
	var n int
	err = stream.Results(func(resp *testResponse) error {

	}
	tmp := make([]byte, len(b))
	copy(tmp, b)
	h.block <- tmp
	return len(b), h.err
}

// CloseWithError will close the stream and return the specified error.
// This can be done several times, but only the first error will be sent.
// After calling this the stream should not be written to.
func (h *httpStreamResponse) CloseWithError(err error) {
	if h.done == nil {
		return
	}
	h.done <- err

		default:
			return nil, err
		}
	}

	return w, nil
}

type sendFileReader struct {
	io.Reader
	io.Closer
}

// ReadFileStream - Returns the read stream of the file.
func (s *xlStorage) ReadFileStream(ctx context.Context, volume, path string, offset, length int64) (io.ReadCloser, error) {
	if offset < 0 {
		return nil, errInvalidArgument
	}

	case authTypeStreamingSigned, authTypeStreamingSignedTrailer:
		// Initialize stream signature verifier.
		rd, s3Err = newSignV4ChunkedReader(r, rAuthType == authTypeStreamingSignedTrailer)
		if s3Err != ErrNone {
			writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Err), r.URL)
			return
		}
	case authTypeStreamingUnsignedTrailer:
		// Initialize stream chunked reader with optional trailers.

	}

	return fi.ToObjectInfo(minioMetaBucket, key, opts.Versioned || opts.VersionSuspended), nil
}

// PutObject - creates an object upon reading from the input stream
// until EOF, erasure codes the data across all disk and additionally
// writes `xl.meta` which carries the necessary metadata for future
// object operations.

			return &GetObjectReader{
				ObjInfo: objInfo,
			}, toObjectErr(errMethodNotAllowed, bucket, object)
		}
		return nil, err
	}

	// check preconditions before reading the stream.
	if checkPrecondFn != nil && checkPrecondFn(objInfo) {
		return nil, PreConditionFailed{}
	}

	opts.NoLock = true
	gr, err = z.serverPools[zIdx].GetObjectNInfo(ctx, bucket, object, rs, h, opts)

	if publicKey != nil {
		w.WriteHeader(200)
		stream := estream.NewWriter(w)
		defer stream.Close()

		clusterKey, err := bytesToPublicKey(getSubnetAdminPublicKey())
		if err != nil {
			bugLogIf(ctx, stream.AddError(err.Error()))
			return
		}
		err = stream.AddKeyEncrypted(clusterKey)
		if err != nil {
			bugLogIf(ctx, stream.AddError(err.Error()))
			return
		}

			return srcSet.CopyObject(ctx, srcBucket, srcObject, dstBucket, dstObject, srcInfo, srcOpts, dstOpts)
		}
		// Destination is not versioned and source version ID is empty
		// perform an in-place update.
		if !dstOpts.Versioned && srcOpts.VersionID == "" {
			srcInfo.Reader.Close() // We are not interested in the reader stream at this point close it.

		return
	}

	// Ensure body content type is opaque to ensure that request body has not
	// been interpreted as form data.
	contentType := r.Header.Get("Content-Type")
	if contentType != "application/octet-stream" {
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrBadRequest), r.URL)
		return
	}

	// Validate operation
	operation := mux.Vars(r)["operation"]
	if operation != "attach" && operation != "detach" {