added another example.

README.md

@@ -30,3 +30,35 @@ void main() {
   });
 }
 ```
+
+
+To reach request object and disconnect event: 
+```dart
+  import 'package:shelf_router/shelf_router.dart';
+
+  var app = Router();
+  app.get("/ws", FutureOr<Response> handler(Request request) {
+   return webSocketHandler((WebSocketChannel webSocket) {
+      // now we have access to request argument
+
+      // that key is being generated by the websocket itself, every connection has a unique key.
+      final webSocketKey = request.headers["sec-websocket-key"];
+
+      webSocket.stream.listen((message) {
+        webSocket.sink.add("echo $message");
+      }).onDone(() {
+        // client disconnected.
+      });
+      webSocket.sink.add("the first message from server.");
+    })(request);
+  });
+  await io.serve(app, 'localhost', 8080);
+```
+
+
+
+
+
+
+
+