compressMetadata[ReservedMetadataPrefix+"actual-size"] = strconv.FormatInt(actualSize, 10)

		reader = etag.NewReader(ctx, reader, nil, nil)
		wantEncryption := crypto.Requested(r.Header)
		s2c, cb := newS2CompressReader(reader, actualSize, wantEncryption)
		dstOpts.IndexCB = cb
		defer s2c.Close()
		reader = etag.Wrap(s2c, reader)
		length = -1
	} else {
		delete(srcInfo.UserDefined, ReservedMetadataPrefix+"compression")

func (z *allTierStats) MarshalMsg(b []byte) (o []byte, err error) {
	o = msgp.Require(b, z.Msgsize())
	// map header, size 1
	// string "ts"
	o = append(o, 0x81, 0xa2, 0x74, 0x73)
	o = msgp.AppendMapHeader(o, uint32(len(z.Tiers)))
	for za0001, za0002 := range z.Tiers {
		o = msgp.AppendString(o, za0001)
		// map header, size 3
		// string "ts"
		o = append(o, 0x83, 0xa2, 0x74, 0x73)
		o = msgp.AppendUint64(o, za0002.TotalSize)

	req, _ := http.NewRequest(http.MethodOptions, s.endPoint, nil)
	req.Header.Set("Origin", "http://foobar.com")
	res, err := s.client.Do(req)
	if err != nil {
		c.Fatal(err)
	}

	for k := range expectedMap {
		if v, ok := res.Header[k]; !ok {
			c.Errorf("Expected key %s missing from %v", k, res.Header)
		} else {
			expectedSet := set.CreateStringSet(expectedMap[k]...)

	}
	closeReader := func() { obj.Close() }
	reader, err := fn(obj, h, closeReader)
	if err != nil {
		return nil, proxy, err
	}
	reader.ObjInfo = oi.Clone()
	if rs != nil {
		contentSize, err := parseSizeFromContentRange(h)
		if err != nil {
			return nil, proxy, err
		}
		reader.ObjInfo.Size = contentSize
	}

	return reader, proxyResult{Proxy: true}, nil
}

func (z BaseOptions) EncodeMsg(en *msgp.Writer) (err error) {
	// map header, size 0
	_ = z
	err = en.Append(0x80)
	if err != nil {
		return
	}
	return
}

// MarshalMsg implements msgp.Marshaler
func (z BaseOptions) MarshalMsg(b []byte) (o []byte, err error) {
	o = msgp.Require(b, z.Msgsize())
	// map header, size 0
	_ = z
	o = append(o, 0x80)
	return
}

		}

		readers := []io.Reader{}
		cumulativeSum := int64(0)
		for _, p := range oi.partLengths {
			readers = append(readers, NewDummyDataGen(p, cumulativeSum))
			cumulativeSum += p
		}
		refReader := io.LimitReader(ioutilx.NewSkipReader(io.MultiReader(readers...), off), length)
		if ok, msg := cmpReaders(refReader, rec.Body); !ok {

							r.URL.Path, w.Header().Get(xhttp.AmzRequestID),
							w.Header().Get(xhttp.AmzRequestHostID)))
					} else {
						errorRespJSON = encodeResponseJSON(APIErrorResponse{
							Code:      hr.apiErr.Code,
							Message:   hr.errBody,
							Resource:  r.URL.Path,
							RequestID: w.Header().Get(xhttp.AmzRequestID),
							HostID:    globalDeploymentID(),
						})