Do not start sync thread if user is disconnected

matrixgw_backend/src/matrix_connection/matrix_client.rs

@@ -298,6 +298,11 @@ impl MatrixClient {
         Ok(())
     }
 
+    /// Check whether a user is currently connected to this client or not
+    pub fn is_client_connected(&self) -> bool {
+        self.client.is_active()
+    }
+
     /// Disconnect user from client
     pub async fn disconnect(self) -> anyhow::Result<()> {
         if let Err(e) = self.client.logout().await {