fix #3328

src/common.rs

@@ -799,3 +799,22 @@ pub fn decode64<T: AsRef<[u8]>>(input: T) -> Result<Vec<u8>, base64::DecodeError
     #[allow(deprecated)]
     base64::decode(input)
 }
+
+pub async fn get_key(sync: bool) -> String {
+    let mut key = if sync {
+        Config::get_option("key")
+    } else {
+        let mut options = crate::ipc::get_options_async().await;
+        options.remove("key").unwrap_or_default()
+    };
+    if key.is_empty() {
+        #[cfg(windows)]
+        if let Some(lic) = windows::get_license() {
+            return lic.key;
+        }
+    }
+    if key.is_empty() && !option_env!("RENDEZVOUS_SERVER").unwrap_or("").is_empty() {
+        key = config::RS_PUB_KEY.to_owned();
+    }
+    key
+}