opt: close unused websocket connections

web/src/views/mobile/pages/ImageSd.vue

@@ -221,7 +221,8 @@ import {checkSession} from "@/action/session";
 import {useRouter} from "vue-router";
 import {getSessionId} from "@/store/session";
 import {
-  showConfirmDialog, showDialog,
+  showConfirmDialog,
+  showDialog,
   showFailToast,
   showImagePreview,
   showNotify,
@@ -357,7 +358,10 @@ onMounted(() => {
 
 onUnmounted(() => {
   clipboard.value.destroy()
-  socket.value = null
+  if (socket.value !== null) {
+    socket.value.close()
+    socket.value = null
+  }
 })