2 files changed, 14 insertions, 2 deletions
diff --git a/src/platform/bind.rs b/src/platform/bind.rs
index f22a5d7..1a234c7 100644
--- a/src/platform/bind.rs
+++ b/src/platform/bind.rs
@@ -28,7 +28,11 @@ pub trait Bind: Send + Sync + 'static {
 pub trait Owner: Send {
     type Error: Error;
 
-    fn set_fwmark(&self, value: Option<u32>) -> Option<Self::Error>;
+    fn get_port(&self) -> u16;
+
+    fn get_fwmark(&self) -> Option<u32>;
+
+    fn set_fwmark(&mut self, value: Option<u32>) -> Option<Self::Error>;
 }
 
 /// On some platforms the application can itself bind to a socket.
diff --git a/src/platform/dummy/bind.rs b/src/platform/dummy/bind.rs
index 3497656..2c30486 100644
--- a/src/platform/dummy/bind.rs
+++ b/src/platform/dummy/bind.rs
@@ -203,7 +203,15 @@ impl Bind for PairBind {
 impl Owner for VoidOwner {
     type Error = BindError;
 
-    fn set_fwmark(&self, _value: Option<u32>) -> Option<Self::Error> {
+    fn set_fwmark(&mut self, _value: Option<u32>) -> Option<Self::Error> {
+        None
+    }
+
+    fn get_port(&self) -> u16 {
+        0
+    }
+
+    fn get_fwmark(&self) -> Option<u32> {
         None
     }
 }