Adding missing files under onlab-netty
diff --git a/utils/netty/src/main/java/org/onlab/netty/SimpleClient.java b/utils/netty/src/main/java/org/onlab/netty/SimpleClient.java
new file mode 100644
index 0000000..1573780
--- /dev/null
+++ b/utils/netty/src/main/java/org/onlab/netty/SimpleClient.java
@@ -0,0 +1,24 @@
+package org.onlab.netty;
+
+import java.util.concurrent.TimeUnit;
+
+public final class SimpleClient {
+    private SimpleClient() {}
+
+    public static void main(String... args) throws Exception {
+        NettyMessagingService messaging = new TestNettyMessagingService(9081);
+        messaging.activate();
+
+        messaging.sendAsync(new Endpoint("localhost", 8080), "simple", "Hello World");
+        Response<String> response = messaging.sendAndReceive(new Endpoint("localhost", 8080), "echo", "Hello World");
+        System.out.println("Got back:" + response.get(2, TimeUnit.SECONDS));
+    }
+
+    public static class TestNettyMessagingService extends NettyMessagingService {
+        public TestNettyMessagingService(int port) throws Exception {
+            super(port);
+            Serializer serializer = new KryoSerializer();
+            this.serializer = serializer;
+        }
+    }
+}