diff --git a/tracker.go b/tracker.go
index 8c37f5a..b47ffbe 100644
--- a/tracker.go
+++ b/tracker.go
@@ -321,6 +321,16 @@ func (t *Tracker) createClose(w http.ResponseWriter, r *http.Request) {
 		t.internalServerError("cannot insert file_on record", err, r, w)
 		return
 	}
+	row = tx.QueryRow("select h.hostip, d.read_port "+
+		"from device d join host h on h.hostid=d.hostid "+
+		"where d.devid=?", devid)
+	var hostip string
+	var httpPort int64
+	err = row.Scan(&hostip, &httpPort)
+	if err != nil {
+		t.internalServerError("cannot select host ip", err, r, w)
+		return
+	}
 	err = tx.Commit()
 	if err != nil {
 		t.internalServerError("cannot commit transaction", err, r, w)
@@ -329,6 +339,10 @@ func (t *Tracker) createClose(w http.ResponseWriter, r *http.Request) {
 	if olddevids != nil {
 		go t.publishDeleteTask(olddevids, oldfid)
 	}
+	var response CreateClose
+	response.Path = fmt.Sprintf("http://%s:%d/dev%d/%s", hostip, httpPort, devid, vivify(fid))
+	encoder := json.NewEncoder(w)
+	encoder.Encode(response) // nolint: errcheck
 }
 
 func (t *Tracker) deleteFile(w http.ResponseWriter, r *http.Request) {
diff --git a/tracker_test.go b/tracker_test.go
index ac60914..a8b7e6f 100644
--- a/tracker_test.go
+++ b/tracker_test.go
@@ -121,7 +121,7 @@ func TestCreateClose(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	_, err = tr.db.Exec("insert into device(devid, status, hostid) values(2, 'alive', 1)")
+	_, err = tr.db.Exec("insert into device(devid, status, hostid, read_port) values(2, 'alive', 1, 5678)")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -140,10 +140,15 @@ func TestCreateClose(t *testing.T) {
 		t.Errorf("handler returned wrong status code: got %v want %v",
 			status, http.StatusOK)
 	}
-	expected := ""
-	if rr.Body.String() != expected {
-		t.Errorf("handler returned unexpected body: got %v want %v",
-			rr.Body.String(), expected)
+	var resp CreateClose
+	err = json.Unmarshal(rr.Body.Bytes(), &resp)
+	if err != nil {
+		t.Fatal(err)
+	}
+	expected := "http://1.2.3.4:5678/dev2/0/000/000/0000000009.fid"
+	if resp.Path != expected {
+		t.Errorf("handler returned unexpected path: got %v want %v",
+			resp.Path, expected)
 	}
 }
 
@@ -170,7 +175,7 @@ func TestCreateCloseOverwrite(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	_, err = tr.db.Exec("insert into device(devid, status, hostid) values(3, 'alive', 1)")
+	_, err = tr.db.Exec("insert into device(devid, status, hostid, read_port) values(3, 'alive', 1, 5678)")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -189,10 +194,15 @@ func TestCreateCloseOverwrite(t *testing.T) {
 		t.Errorf("handler returned wrong status code: got %v want %v",
 			status, http.StatusOK)
 	}
-	expected := ""
-	if rr.Body.String() != expected {
-		t.Errorf("handler returned unexpected body: got %v want %v",
-			rr.Body.String(), expected)
+	var resp CreateClose
+	err = json.Unmarshal(rr.Body.Bytes(), &resp)
+	if err != nil {
+		t.Fatal(err)
+	}
+	expected := "http://1.2.3.4:5678/dev3/0/000/000/0000000009.fid"
+	if resp.Path != expected {
+		t.Errorf("handler returned unexpected path: got %v want %v",
+			resp.Path, expected)
 	}
 }
 
diff --git a/trackerapi.go b/trackerapi.go
index 7d20ced..3145fcf 100644
--- a/trackerapi.go
+++ b/trackerapi.go
@@ -10,6 +10,10 @@ type CreateOpen struct {
 	Fid  int64  `json:"fid"`
 }
 
+type CreateClose struct {
+	Path string `json:"path"`
+}
+
 type GetDevices struct {
 	Devices []Device `json:"devices"`
 }