diff --git a/websocket-sharp/Server/WebSocketServiceHost.cs b/websocket-sharp/Server/WebSocketServiceHost.cs
index 57d9e6a6..7f7be746 100644
--- a/websocket-sharp/Server/WebSocketServiceHost.cs
+++ b/websocket-sharp/Server/WebSocketServiceHost.cs
@@ -59,11 +59,21 @@ namespace WebSocketSharp.Server
 
     #endregion
 
+    #region Internal Properties
+
+    internal ServerState State {
+      get {
+        return Sessions.State;
+      }
+    }
+
+    #endregion
+
     #region Public Properties
 
     /// <summary>
-    /// Gets or sets a value indicating whether the WebSocket service cleans up the inactive
-    /// sessions periodically.
+    /// Gets or sets a value indicating whether the WebSocket service cleans up
+    /// the inactive sessions periodically.
     /// </summary>
     /// <value>
     /// <c>true</c> if the service cleans up the inactive sessions periodically;
@@ -99,11 +109,27 @@ namespace WebSocketSharp.Server
 
     #region Internal Methods
 
+    internal void Start ()
+    {
+      Sessions.Start ();
+    }
+
     internal void StartSession (WebSocketContext context)
     {
       CreateSession ().Start (context, Sessions);
     }
 
+    internal void Stop (ushort code, string reason)
+    {
+      var payload = new PayloadData (code.Append (reason));
+      var e = new CloseEventArgs (payload);
+      var bytes = !code.IsReserved ()
+                  ? WebSocketFrame.CreateCloseFrame (Mask.Unmask, payload).ToByteArray ()
+                  : null;
+
+      Sessions.Stop (e, bytes);
+    }
+
     #endregion
 
     #region Protected Methods
diff --git a/websocket-sharp/Server/WebSocketServiceManager.cs b/websocket-sharp/Server/WebSocketServiceManager.cs
index 4525c684..811d0b96 100644
--- a/websocket-sharp/Server/WebSocketServiceManager.cs
+++ b/websocket-sharp/Server/WebSocketServiceManager.cs
@@ -276,7 +276,7 @@ namespace WebSocketSharp.Server
           host.KeepClean = false;
 
         if (_state == ServerState.Start)
-          host.Sessions.Start ();
+          host.Start ();
 
         _hosts.Add (path, host);
       }
@@ -309,9 +309,8 @@ namespace WebSocketSharp.Server
         _hosts.Remove (path);
       }
 
-      if (host.Sessions.State == ServerState.Start)
-        host.Sessions.Stop (
-          ((ushort) CloseStatusCode.Away).InternalToByteArray (ByteOrder.Big), true);
+      if (host.State == ServerState.Start)
+        host.Stop ((ushort) CloseStatusCode.Away, null);
 
       return true;
     }
@@ -320,7 +319,7 @@ namespace WebSocketSharp.Server
     {
       lock (_sync) {
         foreach (var host in _hosts.Values)
-          host.Sessions.Start ();
+          host.Start ();
 
         _state = ServerState.Start;
       }
@@ -332,13 +331,13 @@ namespace WebSocketSharp.Server
         _state = ServerState.ShuttingDown;
 
         var payload = new PayloadData (data);
-        var args = new CloseEventArgs (payload);
+        var e = new CloseEventArgs (payload);
         var bytes = send
                     ? WebSocketFrame.CreateCloseFrame (Mask.Unmask, payload).ToByteArray ()
                     : null;
 
         foreach (var host in _hosts.Values)
-          host.Sessions.Stop (args, bytes);
+          host.Sessions.Stop (e, bytes);
 
         _hosts.Clear ();
         _state = ServerState.Stop;
diff --git a/websocket-sharp/Server/WebSocketSessionManager.cs b/websocket-sharp/Server/WebSocketSessionManager.cs
index ce1f5dc9..9e8e3645 100644
--- a/websocket-sharp/Server/WebSocketSessionManager.cs
+++ b/websocket-sharp/Server/WebSocketSessionManager.cs
@@ -345,25 +345,14 @@ namespace WebSocketSharp.Server
       }
     }
 
-    internal void Stop (byte[] data, bool send)
-    {
-      var payload = new PayloadData (data);
-      var args = new CloseEventArgs (payload);
-      var bytes = send
-                  ? WebSocketFrame.CreateCloseFrame (Mask.Unmask, payload).ToByteArray ()
-                  : null;
-
-      Stop (args, bytes);
-    }
-
-    internal void Stop (CloseEventArgs args, byte[] frameAsBytes)
+    internal void Stop (CloseEventArgs e, byte[] frameAsBytes)
     {
       lock (_sync) {
         _state = ServerState.ShuttingDown;
 
         _sweepTimer.Enabled = false;
         foreach (var session in _sessions.Values.ToList ())
-          session.Context.WebSocket.Close (args, frameAsBytes, 1000);
+          session.Context.WebSocket.Close (e, frameAsBytes, 1000);
 
         _state = ServerState.Stop;
       }