diff --git a/EzyClient.cs b/EzyClient.cs
index 1ecd340..e84c8c2 100644
--- a/EzyClient.cs
+++ b/EzyClient.cs
@@ -21,13 +21,9 @@ public interface EzyClient
 
 		bool reconnect();
 
-        void send(EzyRequest request);
+        void send(EzyRequest request, bool encrypted = false);
 
-        void send(EzyRequest request, bool encrypted);
-
-        void send(EzyCommand cmd, EzyArray data);
-
-        void send(EzyCommand cmd, EzyArray data, bool encrypted);
+        void send(EzyCommand cmd, EzyArray data, bool encrypted = false);
 
         void disconnect(int reason = (int)EzyDisconnectReason.CLOSE);
 
@@ -39,13 +35,9 @@ public interface EzyClient
 
         void udpConnect(String host, int port);
 
-        void udpSend(EzyRequest request);
-
-        void udpSend(EzyRequest request, bool encrypted);
-
-        void udpSend(EzyCommand cmd, EzyArray data);
+        void udpSend(EzyRequest request, bool encrypted = false);
 
-        void udpSend(EzyCommand cmd, EzyArray data, bool encrypted);
+        void udpSend(EzyCommand cmd, EzyArray data, bool encrypted = false);
 
         String getName();
 
diff --git a/EzyTcpClient.cs b/EzyTcpClient.cs
index 06cd1be..d66571b 100644
--- a/EzyTcpClient.cs
+++ b/EzyTcpClient.cs
@@ -153,12 +153,6 @@ public void close()
             disconnect((int) EzyDisconnectReason.CLOSE);
         }
 
-        public void send(EzyRequest request)
-        {
-            send(request, false);
-        }
-
-
         public void send(EzyRequest request, bool encrypted)
 		{
             Object cmd = request.getCommand();
@@ -166,12 +160,6 @@ public void send(EzyRequest request, bool encrypted)
             send((EzyCommand)cmd, (EzyArray)data, encrypted);
 		}
 
-        public void send(EzyCommand cmd, EzyArray data)
-		{
-            send(cmd, data, false);
-
-        }
-
         public void send(EzyCommand cmd, EzyArray data, bool encrypted)
         {
             bool shouldEncrypted = encrypted;
@@ -399,21 +387,11 @@ public virtual void udpConnect(String host, int port)
             throw new InvalidOperationException("only support TCP, use EzyUTClient instead");
         }
             
-        public virtual void udpSend(EzyRequest request)
-        {
-            throw new InvalidOperationException("only support TCP, use EzyUTClient instead");
-        }
-
         public virtual void udpSend(EzyRequest request, bool encrypted)
         {
             throw new InvalidOperationException("only support TCP, use EzyUTClient instead");
         }
 
-        public virtual void udpSend(EzyCommand cmd, EzyArray data)
-        {
-            throw new InvalidOperationException("only support TCP, use EzyUTClient instead");
-        }
-
         public virtual void udpSend(EzyCommand cmd, EzyArray data, bool encrypted)
         {
             throw new InvalidOperationException("only support TCP, use EzyUTClient instead");
diff --git a/EzyUTClient.cs b/EzyUTClient.cs
index d0c6473..0513750 100644
--- a/EzyUTClient.cs
+++ b/EzyUTClient.cs
@@ -28,11 +28,6 @@ public override void udpConnect(String host, int port)
             ((EzyUTSocketClient)socketClient).udpConnect(host, port);
         }
 
-        public override void udpSend(EzyRequest request)
-        {
-            udpSend(request, false);
-        }
-
         public override void udpSend(EzyRequest request, bool encrypted)
         {
             Object cmd = request.getCommand();
@@ -40,10 +35,6 @@ public override void udpSend(EzyRequest request, bool encrypted)
             udpSend((EzyCommand)cmd, (EzyArray)data, encrypted);
         }
 
-        public override void udpSend(EzyCommand cmd, EzyArray data) {
-            udpSend(cmd, data, false);
-        }
-
         public override void udpSend(EzyCommand cmd, EzyArray data, bool encrypted)
         {
             bool shouldEncrypted = encrypted;
diff --git a/support/EzyAppProxy.cs b/support/EzyAppProxy.cs
index bc5f214..95d543f 100644
--- a/support/EzyAppProxy.cs
+++ b/support/EzyAppProxy.cs
@@ -25,62 +25,32 @@ public EzyAppProxy(EzySocketProxy socketProxy, String appName)
                 new Dictionary<String, IDictionary<Object, AppProxyDataHandler>>();
         }
 
-        public void send(EzyRequest request)
-        {
-            send(request, false);
-        }
-
-        public void send(EzyRequest request, bool encrypted)
+        public void send(EzyRequest request, bool encrypted = false)
         {
             app.send(request, encrypted);
         }
 
-        public void send(String cmd)
-        {
-            send(cmd, false);
-        }
-
-        public void send(String cmd, bool encrypted)
+        public void send(String cmd, bool encrypted = false)
         {
             app.send(cmd, encrypted);
         }
 
-        public void send(String cmd, Object data)
-        {
-            send(cmd, data, false);
-        }
-
-        public void send(String cmd, Object data, bool encrypted)
+        public void send(String cmd, Object data, bool encrypted = false)
         {
             app.send(cmd, binding.marshall<EzyData>(data), encrypted);
         }
 
-        public void udpSend(EzyRequest request)
-        {
-            udpSend(request, false);
-        }
-
-        public void udpSend(EzyRequest request, bool encrypted)
+        public void udpSend(EzyRequest request, bool encrypted = false)
         {
             app.udpSend(request, encrypted);
         }
 
-        public void udpSend(String cmd)
-        {
-            udpSend(cmd, false);
-        }
-
-        public void udpSend(String cmd, bool encrypted)
+        public void udpSend(String cmd, bool encrypted = false)
         {
             app.udpSend(cmd, encrypted);
         }
 
-        public void udpSend(String cmd, Object data)
-        {
-            udpSend(cmd, data, false);
-        }
-
-        public void udpSend(String cmd, Object data, bool encrypted)
+        public void udpSend(String cmd, Object data, bool encrypted = false)
         {
             app.udpSend(cmd, binding.marshall<EzyData>(data), encrypted);
         }
diff --git a/support/EzySocketProxy.cs b/support/EzySocketProxy.cs
index e4baa94..f22d740 100644
--- a/support/EzySocketProxy.cs
+++ b/support/EzySocketProxy.cs
@@ -203,42 +203,22 @@ private void init()
             }
         }
 
-        public void send(EzyRequest request)
-        {
-            send(request, false);
-        }
-
-        public void send(EzyRequest request, bool encrypted)
+        public void send(EzyRequest request, bool encrypted = false)
         {
             client.send(request, encrypted);
         }
 
-        public void send(EzyCommand cmd, Object data)
-        {
-            send(cmd, data, false);
-        }
-
-        public void send(EzyCommand cmd, Object data, bool encrypted)
+        public void send(EzyCommand cmd, Object data, bool encrypted = false)
         {
             client.send(cmd, binding.marshall<EzyArray>(data), encrypted);
         }
 
-        public void udpSend(EzyRequest request)
-        {
-            udpSend(request, false);
-        }
-
-        public void udpSend(EzyRequest request, bool encrypted)
+        public void udpSend(EzyRequest request, bool encrypted = false)
         {
             client.udpSend(request, encrypted);
         }
 
-        public void udpSend(EzyCommand cmd, EzyArray data)
-        {
-            udpSend(cmd, data, false);
-        }
-
-        public void udpSend(EzyCommand cmd, EzyArray data, bool encrypted)
+        public void udpSend(EzyCommand cmd, EzyArray data, bool encrypted = false)
         {
             client.udpSend(cmd, binding.marshall<EzyArray>(data), encrypted);
         }