if err != nil {
		t.Fatal(failTestStr(anonTestStr, err.Error()))
	}

	// creating 2 read closer (to set as request body) from the body content.
	readerOne := io.NopCloser(bytes.NewBuffer(buf))
	readerTwo := io.NopCloser(bytes.NewBuffer(buf))

	anonReq.Body = readerOne

	// call the HTTP handler.
	apiRouter.ServeHTTP(rec, anonReq)

			return ErrMalformedXML
		}

		// Populate payload to extract location constraint.
		r.Body = io.NopCloser(bytes.NewReader(payload))
		region, s3Err = parseLocationConstraint(r)
		if s3Err != ErrNone {
			return s3Err
		}

		// Populate payload again to handle it in HTTP handler.
		r.Body = io.NopCloser(bytes.NewReader(payload))
	}

	logger.GetReqInfo(ctx).Region = region

	return s3Err
}

	values.Set(storageRESTFilePath, path)
	values.Set(storageRESTLength, strconv.Itoa(int(size)))
	values.Set(storageRESTOrigVolume, origvolume)

	respBody, err := client.call(ctx, storageRESTMethodCreateFile, values, io.NopCloser(reader), size)
	defer xhttp.DrainBody(respBody)
	if err != nil {
		return err
	}
	_, err = waitForHTTPResponse(respBody)
	return toStorageErr(err)
}

			return
		}
		defer gr.Close()
		rc, err = file.Open(gr)
		if err != nil {
			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
			return
		}
	} else {
		rc = io.NopCloser(bytes.NewReader([]byte{}))
	}

	defer rc.Close()

	if err = setObjectHeaders(ctx, w, fileObjInfo, nil, opts); err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

		if perr != nil {
			t.Fatalf("Test %d: %s: Failed to create HTTP request for PostPolicyHandler: <ERROR> %v", i+1, instanceType, perr)
		}
		if testCase.malformedBody {
			// Change the request body.
			req.Body = io.NopCloser(bytes.NewReader([]byte("Hello,")))
		}
		// Since `apiRouter` satisfies `http.Handler` it has a ServeHTTP to execute the logic of the handler.
		// Call the ServeHTTP to execute the handler.
		apiRouter.ServeHTTP(rec, req)

	ctx, done, err := p.TrackDiskHealth(ctx, storageMetricCreateFile, volume, path)
	if err != nil {
		return err
	}
	defer done(size, &err)

	return p.storage.CreateFile(ctx, origvolume, volume, path, size, io.NopCloser(reader))
}

func (p *xlStorageDiskIDCheck) ReadFileStream(ctx context.Context, volume, path string, offset, length int64) (io.ReadCloser, error) {

		c.Fatalf("unexpected encryption err: %v", err)
	}

	req.ContentLength = int64(len(buf))
	sum := sha256.Sum256(buf)
	req.Header.Set("X-Amz-Content-Sha256", hex.EncodeToString(sum[:]))
	req.Body = io.NopCloser(bytes.NewReader(buf))
	req = signer.SignV4(*req, accessKey, secretKey, "", "")

	// 3.1 Execute the request.
	resp, err := s.TestSuiteCommon.client.Do(req)
	if err != nil {

	c.Assert(response.StatusCode, http.StatusOK)

	req, err := http.NewRequest(http.MethodPut, getPutObjectURL(s.endPoint, bucketName, "test-cve-object.txt"), nil)
	c.Assert(err, nil)

	req.Body = io.NopCloser(bytes.NewReader([]byte("foobar!\n")))
	req.Trailer = http.Header{}
	req.Trailer.Set("x-amz-checksum-crc32", "rK0DXg==")

	now := UTCNow()

	req = signer.StreamingUnsignedV4(req, "", 8, now)

					found++
					var r io.ReadCloser
					if !si.Dir {
						r, err = disk.ReadFileStream(ctx, volume, si.Name, 0, si.Size)
						if err != nil {
							continue
						}
					} else {
						r = io.NopCloser(bytes.NewBuffer([]byte{}))
					}
					// Keep disk path instead of ID, to ensure that the downloaded zip file can be
					// easily automated with `minio server hostname{1...n}/disk{1...m}`.