fix(connection): improve connection handling and timeouts

ts/proxies/smart-proxy/socket-handler-server.ts

@@ -254,11 +254,30 @@ export class SocketHandlerServer {
 
     // Connect to the resolved target
     const backend = plugins.net.connect(port, host, () => {
+      // Connection established — set idle timeout on both sides (5 min)
+      socket.setTimeout(300_000);
+      backend.setTimeout(300_000);
+
       // Pipe bidirectionally
       socket.pipe(backend);
       backend.pipe(socket);
     });
 
+    // Connect timeout: if backend doesn't connect within 30s, destroy both
+    backend.setTimeout(30_000);
+
+    backend.on('timeout', () => {
+      logger.log('warn', `Dynamic forward timeout to ${host}:${port}`, { component: 'socket-handler-server' });
+      backend.destroy();
+      socket.destroy();
+    });
+
+    socket.on('timeout', () => {
+      logger.log('debug', `Dynamic forward client idle timeout`, { component: 'socket-handler-server' });
+      socket.destroy();
+      backend.destroy();
+    });
+
     backend.on('error', (err) => {
       logger.log('error', `Dynamic forward backend error: ${err.message}`, { component: 'socket-handler-server' });
       socket.destroy();