correctly handle listener add fail

easytier/src/common/global_ctx.rs

@@ -27,7 +27,8 @@ pub enum GlobalCtxEvent {
     PeerConnRemoved(PeerConnInfo),
 
     ListenerAdded(url::Url),
-    ConnectionAccepted(String, String), // (local url, remote url)
+    ListenerAddFailed(url::Url, String), // (url, error message)
+    ConnectionAccepted(String, String),  // (local url, remote url)
     ConnectionError(String, String, String), // (local url, remote url, error message)
 
     Connecting(url::Url),

easytier/src/easytier-core.rs

@@ -374,6 +374,13 @@ pub async fn async_main(cli: Cli) {
                     ));
                 }
 
+                GlobalCtxEvent::ListenerAddFailed(p, msg) => {
+                    print_event(format!(
+                        "listener add failed. listener: {}, msg: {}",
+                        p, msg
+                    ));
+                }
+
                 GlobalCtxEvent::ListenerAdded(p) => {
                     if p.scheme() == "ring" {
                         continue;

easytier/src/instance/listeners.rs

@@ -45,7 +45,7 @@ pub fn get_listener_by_url(
             Box::new(WSTunnelListener::new(l.clone()))
         }
         _ => {
-            unreachable!("unsupported listener uri");
+            return Err(Error::InvalidUrl(l.to_string()));
         }
     })
 }
@@ -101,7 +101,12 @@ impl<H: TunnelHandlerForListener + Send + Sync + 'static + Debug> ListenerManage
         .await?;
 
         for l in self.global_ctx.config.get_listener_uris().iter() {
-            let lis = get_listener_by_url(l, self.global_ctx.clone())?;
+            let Ok(lis) = get_listener_by_url(l, self.global_ctx.clone()) else {
+                let msg = format!("failed to get listener by url: {}, maybe not supported", l);
+                self.global_ctx
+                    .issue_event(GlobalCtxEvent::ListenerAddFailed(l.clone(), msg));
+                continue;
+            };
             self.add_listener(lis, true).await?;
         }