diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index e731192..131cee2 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -135,17 +135,32 @@ jobs:
           mv XrayR XrayR.exe
 
       - name: Prepare to release
-        run: |
-          cp ${GITHUB_WORKSPACE}/README.md ./build_assets/README.md
-          cp ${GITHUB_WORKSPACE}/LICENSE ./build_assets/LICENSE
-          cp ${GITHUB_WORKSPACE}/main/dns.json ./build_assets/dns.json
-          cp ${GITHUB_WORKSPACE}/main/route.json ./build_assets/route.json
-          cp ${GITHUB_WORKSPACE}/main/custom_outbound.json ./build_assets/custom_outbound.json
-          cp ${GITHUB_WORKSPACE}/main/custom_inbound.json ./build_assets/custom_inbound.json
-          cp ${GITHUB_WORKSPACE}/main/rulelist ./build_assets/rulelist
-          cp ${GITHUB_WORKSPACE}/main/config.yml.example ./build_assets/config.yml
-          wget -O ./build_assets/geoip.dat "https://raw.githubusercontent.com/v2fly/geoip/release/geoip.dat"
-          wget -O ./build_assets/geosite.dat "https://raw.githubusercontent.com/v2fly/domain-list-community/release/dlc.dat"
+        uses: nick-fields/retry@v2
+        with:
+          timeout_minutes: 60
+          retry_wait_seconds: 60
+          max_attempts: 5
+          command: |
+            cp ${GITHUB_WORKSPACE}/README.md ./build_assets/README.md
+            cp ${GITHUB_WORKSPACE}/LICENSE ./build_assets/LICENSE
+            cp ${GITHUB_WORKSPACE}/main/dns.json ./build_assets/dns.json
+            cp ${GITHUB_WORKSPACE}/main/route.json ./build_assets/route.json
+            cp ${GITHUB_WORKSPACE}/main/custom_outbound.json ./build_assets/custom_outbound.json
+            cp ${GITHUB_WORKSPACE}/main/custom_inbound.json ./build_assets/custom_inbound.json
+            cp ${GITHUB_WORKSPACE}/main/rulelist ./build_assets/rulelist
+            cp ${GITHUB_WORKSPACE}/main/config.yml.example ./build_assets/config.yml
+            LIST=('geoip geoip geoip' 'domain-list-community dlc geosite')
+            for i in "${LIST[@]}"
+            do
+              INFO=($(echo $i | awk 'BEGIN{FS=" ";OFS=" "} {print $1,$2,$3}'))
+              DOWNLOAD_URL="https://raw.githubusercontent.com/v2fly/${INFO[0]}/release/${INFO[1]}.dat"
+              FILE_NAME="${INFO[2]}.dat"
+              echo -e "Downloading ${DOWNLOAD_URL}..."
+              curl -L "${DOWNLOAD_URL}" -o ./build_assets/${FILE_NAME}
+              echo -e "Verifying HASH key..."
+              HASH="$(curl -sL "${DOWNLOAD_URL}.sha256sum" | awk -F ' ' '{print $1}')"
+              [ "$(sha256sum "./build_assets/${FILE_NAME}" | awk -F ' ' '{print $1}')" == "${HASH}" ] || { echo -e "The HASH key of ${FILE_NAME} does not match cloud one."; exit 1; }
+            done
       - name: Create ZIP archive
         shell: bash
         run: |
diff --git a/service/controller/controller.go b/service/controller/controller.go
index 047f8ae..902f295 100644
--- a/service/controller/controller.go
+++ b/service/controller/controller.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"log"
 	"reflect"
+	"sync"
 	"time"
 
 	"github.com/xtls/xray-core/common/protocol"
@@ -30,6 +31,7 @@ type LimitInfo struct {
 }
 
 type Controller struct {
+	sync.Mutex
 	server       *core.Instance
 	config       *Config
 	clientInfo   api.ClientInfo
@@ -46,6 +48,7 @@ type Controller struct {
 	stm          stats.Manager
 	dispatcher   *mydispatcher.DefaultDispatcher
 	startAt      time.Time
+	dnsFeature   *features.Feature
 }
 
 type periodicTask struct {
@@ -660,8 +663,14 @@ func (c *Controller) addNewDNS(newNodeInfo *api.NodeInfo) error {
 		return err
 	}
 	if feature, ok := obj.(features.Feature); ok {
-		if err := c.server.AddFeature(feature); err != nil {
-			return err
+		// todo fix memory leak
+		c.Lock()
+		defer c.Unlock()
+		if c.dnsFeature == nil {
+			c.dnsFeature = &feature
+			c.server.AddFeature(feature)
+		} else {
+			*c.dnsFeature = feature
 		}
 	}