diff --git a/apis/swagger.yml b/apis/swagger.yml
index b0fb82dfb..f9c80af97 100644
--- a/apis/swagger.yml
+++ b/apis/swagger.yml
@@ -702,6 +702,13 @@ definitions:
           tells whether it is a call from dfdaemon. dfdaemon is a long running
           process which works for container engines. It translates the image
           pulling request into raw requests into those dfget recognizes.
+      callSystem:
+        type: "string"
+        description: |
+          This attribute represents where the dfget requests come from. Dfget will pass
+          this field to supernode and supernode can do some checking and filtering via
+          black/white list mechanism to guarantee security, or some other purposes like debugging.
+        minLength: 1
 
   PeerCreateRequest:
     type: "object"
@@ -840,9 +847,9 @@ definitions:
       callSystem:
         type: "string"
         description: |
-          This field is for debugging. When caller of dfget is using it to files, he can pass callSystem
-          name to dfget. When this field is passing to supernode, supernode has ability to filter them via 
-          some black/white list to guarantee security, or some other purposes.
+          This attribute represents where the dfget requests come from. Dfget will pass
+          this field to supernode and supernode can do some checking and filtering via
+          black/white list mechanism to guarantee security, or some other purposes like debugging.
         minLength: 1
       filter:
         type: "array"
@@ -958,20 +965,7 @@ definitions:
           from source server as user's wish.
         additionalProperties:
           type: "string"
-      dfdaemon:
-        type: "boolean"
-        description: |
-          tells whether it is a call from dfdaemon. dfdaemon is a long running
-          process which works for container engines. It translates the image
-          pulling request into raw requests into those dfget recganises.
-      callSystem:
-        type: "string"
-        description: |
-          This field is for debugging. When caller of dfget is using it to files, he can pass callSystem
-          name to dfget. When this field is passing to supernode, supernode has ability to filter them via 
-          some black/white list to guarantee security, or some other purposes.
-        minLength: 1
-      
+
   TaskUpdateRequest:
     type: "object"
     description: "request used to update task attributes."
@@ -1169,7 +1163,20 @@ definitions:
       supernodeIP:
         type: "string"
         description: "IP address of supernode which the peer connects to"
- 
+      dfdaemon:
+        type: "boolean"
+        description: |
+          tells whether it is a call from dfdaemon. dfdaemon is a long running
+          process which works for container engines. It translates the image
+          pulling request into raw requests into those dfget recganises.
+      callSystem:
+        type: "string"
+        description: |
+          This attribute represents where the dfget requests come from. Dfget will pass
+          this field to supernode and supernode can do some checking and filtering via
+          black/white list mechanism to guarantee security, or some other purposes like debugging.
+        minLength: 1
+
   ErrorResponse:
     type: "object"
     description: |
diff --git a/apis/types/df_get_task.go b/apis/types/df_get_task.go
index 457408dd8..ff0f300ef 100644
--- a/apis/types/df_get_task.go
+++ b/apis/types/df_get_task.go
@@ -27,6 +27,19 @@ type DfGetTask struct {
 	//
 	CID string `json:"cID,omitempty"`
 
+	// This attribute represents where the dfget requests come from. Dfget will pass
+	// this field to supernode and supernode can do some checking and filtering via
+	// black/white list mechanism to guarantee security, or some other purposes like debugging.
+	//
+	// Min Length: 1
+	CallSystem string `json:"callSystem,omitempty"`
+
+	// tells whether it is a call from dfdaemon. dfdaemon is a long running
+	// process which works for container engines. It translates the image
+	// pulling request into raw requests into those dfget recganises.
+	//
+	Dfdaemon bool `json:"dfdaemon,omitempty"`
+
 	// path is used in one peer A for uploading functionality. When peer B hopes
 	// to get piece C from peer A, B must provide a URL for piece C.
 	// Then when creating a task in supernode, peer A must provide this URL in request.
@@ -61,6 +74,10 @@ type DfGetTask struct {
 func (m *DfGetTask) Validate(formats strfmt.Registry) error {
 	var res []error
 
+	if err := m.validateCallSystem(formats); err != nil {
+		res = append(res, err)
+	}
+
 	if err := m.validateStatus(formats); err != nil {
 		res = append(res, err)
 	}
@@ -71,6 +88,19 @@ func (m *DfGetTask) Validate(formats strfmt.Registry) error {
 	return nil
 }
 
+func (m *DfGetTask) validateCallSystem(formats strfmt.Registry) error {
+
+	if swag.IsZero(m.CallSystem) { // not required
+		return nil
+	}
+
+	if err := validate.MinLength("callSystem", "body", string(m.CallSystem), 1); err != nil {
+		return err
+	}
+
+	return nil
+}
+
 var dfGetTaskTypeStatusPropEnum []interface{}
 
 func init() {
diff --git a/apis/types/task_create_request.go b/apis/types/task_create_request.go
index b07bc160e..c9eb85f21 100644
--- a/apis/types/task_create_request.go
+++ b/apis/types/task_create_request.go
@@ -24,9 +24,9 @@ type TaskCreateRequest struct {
 	//
 	CID string `json:"cID,omitempty"`
 
-	// This field is for debugging. When caller of dfget is using it to files, he can pass callSystem
-	// name to dfget. When this field is passing to supernode, supernode has ability to filter them via
-	// some black/white list to guarantee security, or some other purposes.
+	// This attribute represents where the dfget requests come from. Dfget will pass
+	// this field to supernode and supernode can do some checking and filtering via
+	// black/white list mechanism to guarantee security, or some other purposes like debugging.
 	//
 	// Min Length: 1
 	CallSystem string `json:"callSystem,omitempty"`
diff --git a/apis/types/task_info.go b/apis/types/task_info.go
index 719153c3e..f88a43985 100644
--- a/apis/types/task_info.go
+++ b/apis/types/task_info.go
@@ -22,24 +22,11 @@ type TaskInfo struct {
 	// ID of the task.
 	ID string `json:"ID,omitempty"`
 
-	// This field is for debugging. When caller of dfget is using it to files, he can pass callSystem
-	// name to dfget. When this field is passing to supernode, supernode has ability to filter them via
-	// some black/white list to guarantee security, or some other purposes.
-	//
-	// Min Length: 1
-	CallSystem string `json:"callSystem,omitempty"`
-
 	// The status of the created task related to CDN functionality.
 	//
 	// Enum: [WAITING RUNNING FAILED SUCCESS SOURCE_ERROR]
 	CdnStatus string `json:"cdnStatus,omitempty"`
 
-	// tells whether it is a call from dfdaemon. dfdaemon is a long running
-	// process which works for container engines. It translates the image
-	// pulling request into raw requests into those dfget recganises.
-	//
-	Dfdaemon bool `json:"dfdaemon,omitempty"`
-
 	// The length of the file dfget requests to download in bytes
 	// which including the header and the trailer of each piece.
 	//
@@ -101,10 +88,6 @@ type TaskInfo struct {
 func (m *TaskInfo) Validate(formats strfmt.Registry) error {
 	var res []error
 
-	if err := m.validateCallSystem(formats); err != nil {
-		res = append(res, err)
-	}
-
 	if err := m.validateCdnStatus(formats); err != nil {
 		res = append(res, err)
 	}
@@ -115,19 +98,6 @@ func (m *TaskInfo) Validate(formats strfmt.Registry) error {
 	return nil
 }
 
-func (m *TaskInfo) validateCallSystem(formats strfmt.Registry) error {
-
-	if swag.IsZero(m.CallSystem) { // not required
-		return nil
-	}
-
-	if err := validate.MinLength("callSystem", "body", string(m.CallSystem), 1); err != nil {
-		return err
-	}
-
-	return nil
-}
-
 var taskInfoTypeCdnStatusPropEnum []interface{}
 
 func init() {
diff --git a/apis/types/task_register_request.go b/apis/types/task_register_request.go
index 382973032..90886382f 100644
--- a/apis/types/task_register_request.go
+++ b/apis/types/task_register_request.go
@@ -28,6 +28,13 @@ type TaskRegisterRequest struct {
 	//
 	CID string `json:"cID,omitempty"`
 
+	// This attribute represents where the dfget requests come from. Dfget will pass
+	// this field to supernode and supernode can do some checking and filtering via
+	// black/white list mechanism to guarantee security, or some other purposes like debugging.
+	//
+	// Min Length: 1
+	CallSystem string `json:"callSystem,omitempty"`
+
 	// tells whether it is a call from dfdaemon. dfdaemon is a long running
 	// process which works for container engines. It translates the image
 	// pulling request into raw requests into those dfget recognizes.
@@ -100,6 +107,10 @@ func (m *TaskRegisterRequest) Validate(formats strfmt.Registry) error {
 		res = append(res, err)
 	}
 
+	if err := m.validateCallSystem(formats); err != nil {
+		res = append(res, err)
+	}
+
 	if err := m.validateHostName(formats); err != nil {
 		res = append(res, err)
 	}
@@ -131,6 +142,19 @@ func (m *TaskRegisterRequest) validateIP(formats strfmt.Registry) error {
 	return nil
 }
 
+func (m *TaskRegisterRequest) validateCallSystem(formats strfmt.Registry) error {
+
+	if swag.IsZero(m.CallSystem) { // not required
+		return nil
+	}
+
+	if err := validate.MinLength("callSystem", "body", string(m.CallSystem), 1); err != nil {
+		return err
+	}
+
+	return nil
+}
+
 func (m *TaskRegisterRequest) validateHostName(formats strfmt.Registry) error {
 
 	if swag.IsZero(m.HostName) { // not required
diff --git a/supernode/daemon/mgr/dfgettask/manager_test.go b/supernode/daemon/mgr/dfgettask/manager_test.go
index 2de933e57..514d8fb05 100644
--- a/supernode/daemon/mgr/dfgettask/manager_test.go
+++ b/supernode/daemon/mgr/dfgettask/manager_test.go
@@ -35,10 +35,15 @@ func init() {
 }
 
 type DfgetTaskMgrTestSuite struct {
+	manager *Manager
+}
+
+// SetUpSuite does common setup in the beginning of each test.
+func (s *DfgetTaskMgrTestSuite) SetUpSuite(c *check.C) {
+	s.manager, _ = NewManager()
 }
 
 func (s *DfgetTaskMgrTestSuite) TestDfgetTaskMgr(c *check.C) {
-	dfgetTaskManager, _ := NewManager()
 	clientID := "foo"
 	taskID := "00c4e7b174af7ed61c414b36ef82810ac0c98142c03e5748c00e1d1113f3c882"
 
@@ -51,11 +56,11 @@ func (s *DfgetTaskMgrTestSuite) TestDfgetTaskMgr(c *check.C) {
 		PeerID:    "foo-192.168.10.11-1553838710990554281",
 	}
 
-	err := dfgetTaskManager.Add(context.Background(), dfgetTask)
+	err := s.manager.Add(context.Background(), dfgetTask)
 	c.Check(err, check.IsNil)
 
 	// Get
-	dt, err := dfgetTaskManager.Get(context.Background(), clientID, taskID)
+	dt, err := s.manager.Get(context.Background(), clientID, taskID)
 	c.Check(err, check.IsNil)
 	c.Check(dt, check.DeepEquals, &types.DfGetTask{
 		CID:       clientID,
@@ -67,10 +72,10 @@ func (s *DfgetTaskMgrTestSuite) TestDfgetTaskMgr(c *check.C) {
 	})
 
 	// UpdateStatus
-	err = dfgetTaskManager.UpdateStatus(context.Background(), clientID, taskID, types.DfGetTaskStatusSUCCESS)
+	err = s.manager.UpdateStatus(context.Background(), clientID, taskID, types.DfGetTaskStatusSUCCESS)
 	c.Check(err, check.IsNil)
 
-	dt, err = dfgetTaskManager.Get(context.Background(), clientID, taskID)
+	dt, err = s.manager.Get(context.Background(), clientID, taskID)
 	c.Check(err, check.IsNil)
 	c.Check(dt, check.DeepEquals, &types.DfGetTask{
 		CID:       clientID,
@@ -82,9 +87,9 @@ func (s *DfgetTaskMgrTestSuite) TestDfgetTaskMgr(c *check.C) {
 	})
 
 	// Delete
-	err = dfgetTaskManager.Delete(context.Background(), clientID, taskID)
+	err = s.manager.Delete(context.Background(), clientID, taskID)
 	c.Check(err, check.IsNil)
 
-	_, err = dfgetTaskManager.Get(context.Background(), clientID, taskID)
+	_, err = s.manager.Get(context.Background(), clientID, taskID)
 	c.Check(errors.IsDataNotFound(err), check.Equals, true)
 }
diff --git a/supernode/daemon/mgr/task/manager_util.go b/supernode/daemon/mgr/task/manager_util.go
index 69f542c63..547ab348b 100644
--- a/supernode/daemon/mgr/task/manager_util.go
+++ b/supernode/daemon/mgr/task/manager_util.go
@@ -28,8 +28,6 @@ func (tm *Manager) addOrUpdateTask(ctx context.Context, req *types.TaskCreateReq
 	var task *types.TaskInfo
 	newTask := &types.TaskInfo{
 		ID:         taskID,
-		CallSystem: req.CallSystem,
-		Dfdaemon:   req.Dfdaemon,
 		Headers:    req.Headers,
 		Identifier: req.Identifier,
 		Md5:        req.Md5,
@@ -155,6 +153,8 @@ func (tm *Manager) updateTask(taskID string, updateTaskInfo *types.TaskInfo) err
 func (tm *Manager) addDfgetTask(ctx context.Context, req *types.TaskCreateRequest, task *types.TaskInfo) (*types.DfGetTask, error) {
 	dfgetTask := &types.DfGetTask{
 		CID:         req.CID,
+		CallSystem:  req.CallSystem,
+		Dfdaemon:    req.Dfdaemon,
 		Path:        req.Path,
 		PieceSize:   task.PieceSize,
 		Status:      types.DfGetTaskStatusWAITING,
diff --git a/supernode/daemon/mgr/task/manager_util_test.go b/supernode/daemon/mgr/task/manager_util_test.go
index e6ee9c271..5df0ffc9f 100644
--- a/supernode/daemon/mgr/task/manager_util_test.go
+++ b/supernode/daemon/mgr/task/manager_util_test.go
@@ -81,9 +81,7 @@ func (s *TaskUtilTestSuite) TestAddOrUpdateTask(c *check.C) {
 			},
 			task: &types.TaskInfo{
 				ID:             generateTaskID("http://aa.bb.com", "", ""),
-				CallSystem:     "foo",
 				CdnStatus:      types.TaskInfoCdnStatusWAITING,
-				Dfdaemon:       true,
 				HTTPFileLength: 1000,
 				PieceSize:      config.DefaultPieceSize,
 				PieceTotal:     1,
@@ -103,9 +101,7 @@ func (s *TaskUtilTestSuite) TestAddOrUpdateTask(c *check.C) {
 			},
 			task: &types.TaskInfo{
 				ID:             generateTaskID("http://aa.bb.com", "", ""),
-				CallSystem:     "foo",
 				CdnStatus:      types.TaskInfoCdnStatusWAITING,
-				Dfdaemon:       true,
 				HTTPFileLength: 1000,
 				PieceSize:      config.DefaultPieceSize,
 				PieceTotal:     1,
diff --git a/supernode/server/0.3_bridge.go b/supernode/server/0.3_bridge.go
index aac206d4f..919f6c009 100644
--- a/supernode/server/0.3_bridge.go
+++ b/supernode/server/0.3_bridge.go
@@ -77,6 +77,7 @@ func (s *Server) registry(ctx context.Context, rw http.ResponseWriter, req *http
 	peerID := peerCreateResponse.ID
 	taskCreateRequest := &types.TaskCreateRequest{
 		CID:         request.CID,
+		CallSystem:  request.CallSystem,
 		Dfdaemon:    request.Dfdaemon,
 		Headers:     cutil.ConvertHeaders(request.Headers),
 		Identifier:  request.Identifier,