Fix for issue #15

Example2/Echo.cs

@@ -1,5 +1,6 @@
 using System;
 using WebSocketSharp;
+using WebSocketSharp.Net;
 using WebSocketSharp.Server;
 
 namespace Example2 {
@@ -13,5 +14,16 @@ namespace Example2 {
               : e.Data;
       Send(msg);
     }
+
+    protected override bool ProcessCookies(CookieCollection request, CookieCollection response)
+    {
+      foreach (Cookie cookie in request)
+      {
+        cookie.Expired = true;
+        response.Add(cookie);
+      }
+
+      return true;
+    }
   }
 }