diff --git a/src/Mine/SeekerBundle/Resources/config/config.yml b/src/Mine/SeekerBundle/Resources/config/config.yml
index 136454a..7182832 100644
--- a/src/Mine/SeekerBundle/Resources/config/config.yml
+++ b/src/Mine/SeekerBundle/Resources/config/config.yml
@@ -32,7 +32,7 @@ snc_redis:
 gos_web_socket:
     server:
         host: 0.0.0.0
-        port: 8080
+        port: 6450
         router:
             resources:
                 - "@MineSeekerBundle/Resources/config/pubsub/routing.yml"
diff --git a/src/Mine/SeekerBundle/Resources/public/js/mine-seeker/app.js b/src/Mine/SeekerBundle/Resources/public/js/mine-seeker/app.js
index 71fe5b6..727f4b5 100644
--- a/src/Mine/SeekerBundle/Resources/public/js/mine-seeker/app.js
+++ b/src/Mine/SeekerBundle/Resources/public/js/mine-seeker/app.js
@@ -4,7 +4,7 @@ import GridControl from './grid/grid-control';
 class MineSeeker extends React.Component {
     /** after rendering */
     componentDidMount() {
-        var websocket = WS.connect("ws://mine.dev:8080");
+        var websocket = WS.connect("ws://mine.dev:6450");
 
         /** session is an Autobahn JS WAMP session. */
         websocket.on("socket/connect", function (session) {
@@ -14,14 +14,14 @@ class MineSeeker extends React.Component {
                 console.log("Received message", payload.msg);
             });
 
-            // session.call("sample/sum", {"term1": 2, "term2": 5}).then(
-            //     function (result) {
-            //         console.log("RPC Valid!", result);
-            //     },
-            //     function (error, desc) {
-            //         console.log("RPC Error", error, desc);
-            //     }
-            // );
+            session.call("sample/sum", [2, 5]).then(
+                function (result) {
+                    console.log("RPC Valid!", result);
+                },
+                function (error, desc) {
+                    console.log("RPC Error", error, desc);
+                }
+            );
 
             session.publish("acme/channel", {msg: "This is a message!"});
 
diff --git a/src/Mine/SeekerBundle/Rpc/AcmeRpc.php b/src/Mine/SeekerBundle/Rpc/AcmeRpc.php
index ea65cd5..2c02cc8 100644
--- a/src/Mine/SeekerBundle/Rpc/AcmeRpc.php
+++ b/src/Mine/SeekerBundle/Rpc/AcmeRpc.php
@@ -23,6 +23,17 @@ class AcmeRpc implements RpcInterface
         return array("result" => array_sum($params));
     }
 
+    /**
+     * @param ConnectionInterface $connection
+     * @param WampRequest $request
+     * @param $params
+     * @return number
+     */
+    public function sum(ConnectionInterface $connection, WampRequest $request, $params)
+    {
+        return array_sum($params);
+    }
+
     /**
      * Name of RPC, use for pubsub router (see step3)
      *