From d37e6f672269e1b696c2778684c30af9b5b84bf1 Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Thu, 23 Feb 2017 15:18:26 +0900
Subject: [PATCH] [Modify] Add it

---
 .../Server/WebSocketServiceHost`1.cs           | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/websocket-sharp/Server/WebSocketServiceHost`1.cs b/websocket-sharp/Server/WebSocketServiceHost`1.cs
index fb05efb1..24f634c1 100644
--- a/websocket-sharp/Server/WebSocketServiceHost`1.cs
+++ b/websocket-sharp/Server/WebSocketServiceHost`1.cs
@@ -125,6 +125,24 @@ namespace WebSocketSharp.Server
 
     #region Private Methods
 
+    private bool canSet (out string message)
+    {
+      message = null;
+
+      var state = _sessions.State;
+      if (state == ServerState.Start) {
+        message = "The service has already started.";
+        return false;
+      }
+
+      if (state == ServerState.ShuttingDown) {
+        message = "The service is shutting down.";
+        return false;
+      }
+
+      return true;
+    }
+
     private Func<TBehavior> createCreator (
       Func<TBehavior> creator, Action<TBehavior> initializer
     )