feat(smart-proxy): add socket-handler relay, fast-path port-only forwarding, metrics and bridge improvements, and various TS/Rust integration fixes

rust/crates/rustproxy/src/lib.rs

@@ -74,8 +74,8 @@ pub struct RustProxy {
     nft_manager: Option<NftManager>,
     started: bool,
     started_at: Option<Instant>,
-    /// Path to a Unix domain socket for relaying socket-handler connections back to TypeScript.
-    socket_handler_relay_path: Option<String>,
+    /// Shared path to a Unix domain socket for relaying socket-handler connections back to TypeScript.
+    socket_handler_relay: Arc<std::sync::RwLock<Option<String>>>,
 }
 
 impl RustProxy {
@@ -111,7 +111,7 @@ impl RustProxy {
             nft_manager: None,
             started: false,
             started_at: None,
-            socket_handler_relay_path: None,
+            socket_handler_relay: Arc::new(std::sync::RwLock::new(None)),
         })
     }
 
@@ -259,6 +259,9 @@ impl RustProxy {
         );
         listener.set_connection_config(conn_config);
 
+        // Share the socket-handler relay path with the listener
+        listener.set_socket_handler_relay(Arc::clone(&self.socket_handler_relay));
+
         // Extract TLS configurations from routes and cert manager
         let mut tls_configs = Self::extract_tls_configs(&self.options.routes);
 
@@ -729,14 +732,16 @@ impl RustProxy {
     }
 
     /// Set the Unix domain socket path for relaying socket-handler connections to TypeScript.
+    /// The path is shared with the TcpListenerManager via Arc<RwLock>, so updates
+    /// take effect immediately for all new connections.
     pub fn set_socket_handler_relay_path(&mut self, path: Option<String>) {
         info!("Socket handler relay path set to: {:?}", path);
-        self.socket_handler_relay_path = path;
+        *self.socket_handler_relay.write().unwrap() = path;
     }
 
     /// Get the current socket handler relay path.
-    pub fn get_socket_handler_relay_path(&self) -> Option<&str> {
-        self.socket_handler_relay_path.as_deref()
+    pub fn get_socket_handler_relay_path(&self) -> Option<String> {
+        self.socket_handler_relay.read().unwrap().clone()
     }
 
     /// Load a certificate for a domain and hot-swap the TLS configuration.