propagate tun/cat listener errors to the user

Author: OmarTariq612

leaf/src/app/inbound/manager.rs

@@ -345,19 +345,13 @@ impl InboundManager {
     }
 
     #[cfg(feature = "inbound-tun")]
-    pub fn get_tun_runner(&self) -> Result<Runner> {
-        if let Some(listener) = &self.tun_listener {
-            return listener.listen();
-        }
-        Err(anyhow!("no tun inbound"))
+    pub fn get_tun_runner(&self) -> Option<Result<Runner>> {
+        self.tun_listener.as_ref().map(TunInboundListener::listen)
     }
 
     #[cfg(feature = "inbound-cat")]
-    pub fn get_cat_runner(&self) -> Result<Runner> {
-        if let Some(listener) = &self.cat_listener {
-            return listener.listen();
-        }
-        Err(anyhow!("no cat inbound"))
+    pub fn get_cat_runner(&self) -> Option<Result<Runner>> {
+        self.cat_listener.as_ref().map(CatInboundListener::listen)
     }
 
     #[cfg(feature = "inbound-tun")]

leaf/src/lib.rs

@@ -521,13 +521,13 @@ pub fn start(rt_id: RuntimeId, opts: StartOptions) -> Result<(), Error> {
     }
 
     #[cfg(feature = "inbound-tun")]
-    if let Ok(r) = inbound_manager.get_tun_runner() {
-        runners.push(r);
+    if let Some(r) = inbound_manager.get_tun_runner() {
+        runners.push(r.map_err(Error::Config)?);
     }
 
     #[cfg(feature = "inbound-cat")]
-    if let Ok(r) = inbound_manager.get_cat_runner() {
-        runners.push(r);
+    if let Some(r) = inbound_manager.get_cat_runner() {
+        runners.push(r.map_err(Error::Config)?);
     }
 
     #[cfg(all(feature = "inbound-tun", any(target_os = "macos", target_os = "linux")))]