Signed-off-by: Nikita Zinkevich <n.zinkevich@yadro.com>

@@ -35,4 +35,2 @@
 }
 
-// PrmContainer groups parameters of FrostFS.Container operation.
-type PrmContainer struct {

@@ -48,0 +125,4 @@
+		return nil, fmt.Errorf("unmarshal combined object parts: %w", err)
+	}
+
+	isEncrypted := FormEncryptionInfo(p.objInfo.Headers).Enabled

@@ -64,1 +64,3 @@
-	Address oid.Address
+	Address   oid.Address
+	Container cid.ID
+	Object    oid.ID

@@ -77,0 +79,4 @@
+
+	Container cid.ID
+
+	Object oid.ID

@@ -122,0 +123,4 @@
+	// payload range
+	Off, Ln uint64
+
+	ObjInfo *data.ObjectInfo

@@ -122,0 +125,4 @@
+
+	ObjInfo *data.ObjectInfo
+	BktInfo *data.BucketInfo
+	Log     *zap.Logger

@@ -9,2 +12,4 @@
 )
 
+const (
+	frostFSSystemMetadataPrefix  = "S3-"

@@ -80,3 +102,2 @@
+	}
 	req.Response.Header.Set(fasthttp.HeaderContentLength, strconv.FormatUint(payloadSize, 10))
-	var contentType string
-	for _, attr := range rObj.Header.Attributes() {

@@ -76,0 +85,4 @@
+		req.log.Error(logs.CouldntParseCreationDate,
+			zap.String("val", attrs[object.AttributeTimestamp]),
+			zap.Error(err))
+		response.Error(req.RequestCtx, "failed to convert timestamp: "+err.Error(), fasthttp.StatusInternalServerError)

@@ -0,0 +17,4 @@
+	// payload range
+	Off, Ln uint64
+
+	Oid     oid.ID

@@ -0,0 +18,4 @@
+	Off, Ln uint64
+
+	Oid     oid.ID
+	BktInfo *data.BucketInfo

@@ -0,0 +33,4 @@
+// MultiObjectReader implements io.Reader of payloads of the object list stored in the FrostFS network.
+type MultiObjectReader struct {
+	ctx context.Context
+	log *zap.Logger

@@ -51,0 +51,4 @@
+type getMultiobjectBodyParams struct {
+	obj     *Object
+	req     request
+	bktinfo *data.BucketInfo

@@ -180,3 +190,3 @@
 // byAddress is a wrapper for function (e.g. request.headObject, request.receiveFile) that
 // prepares request and object address to it.
-func (h *Handler) byAddress(c *fasthttp.RequestCtx, f func(context.Context, request, oid.Address)) {
+func (h *Handler) byAddress(c *fasthttp.RequestCtx, f func(context.Context, request, oid.Address, *data.BucketInfo)) {

@@ -48,0 +67,4 @@
+	ctx := p.req.RequestCtx
+	params := PrmInitMultiObjectReader{
+		Off:    0,
+		Ln:     0,

@@ -81,1 +83,3 @@
-	var contentType string
+	req.setIDs(rObj.Header)
+	payload = rObj.Payload
+	payloadSize = rObj.Header.PayloadSize()

@@ -107,3 +106,4 @@
 			contentType = val
 		case object.AttributeFilePath:
 			filepath = val
+			if filename == "" {

@@ -0,0 +36,4 @@
+}
+
+type readerInitiator interface {
+	InitFrostFSObjectPayloadReader(ctx context.Context, p GetFrostFSParams) (io.Reader, error)

@@ -0,0 +174,4 @@
+		n, err = x.curReader.Read(p)
+		if err != nil {
+			if err := x.curReader.Close(); err != nil {
+				return n, err