diff --git a/src/ipc.rs b/src/ipc.rs
index 5be2c590c..341599d58 100644
--- a/src/ipc.rs
+++ b/src/ipc.rs
@@ -264,6 +264,7 @@ async fn handle(data: Data, stream: &mut Connection) {
                 {
                     RendezvousMediator::restart();
                 }
+                allow_err!(stream.send(&Data::Options(None)).await);
             }
         },
         Data::NatType(_) => {
@@ -497,11 +498,11 @@ pub fn set_option(key: &str, value: &str) {
 
 #[tokio::main(flavor = "current_thread")]
 pub async fn set_options(value: HashMap<String, String>) -> ResultType<()> {
-    Config::set_options(value.clone());
-    connect(1000, "")
-        .await?
-        .send(&Data::Options(Some(value)))
-        .await?;
+    let mut c = connect(1000, "").await?;
+    c.send(&Data::Options(Some(value.clone()))).await?;
+    // do not put below before connect, because we need to check should_exit
+    c.next_timeout(1000).await.ok();
+    Config::set_options(value);
     Ok(())
 }
 
diff --git a/src/rendezvous_mediator.rs b/src/rendezvous_mediator.rs
index 727a11824..4e3384245 100644
--- a/src/rendezvous_mediator.rs
+++ b/src/rendezvous_mediator.rs
@@ -43,6 +43,7 @@ pub struct RendezvousMediator {
 impl RendezvousMediator {
     pub fn restart() {
         SHOULD_EXIT.store(true, Ordering::SeqCst);
+        log::info!("server restar");
     }
 
     pub async fn start_all() {
@@ -74,7 +75,6 @@ impl RendezvousMediator {
                 SHOULD_EXIT.store(false, Ordering::SeqCst);
                 for host in servers.clone() {
                     let server = server.clone();
-                    let servers = servers.clone();
                     futs.push(tokio::spawn(async move {
                         allow_err!(Self::start(server, host).await);
                         // SHOULD_EXIT here is to ensure once one exits, the others also exit.