From 5f5053a655ac0e7a0cab58e589d5f72fc787cf48 Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Sat, 3 Sep 2016 16:29:40 +0900
Subject: [PATCH] [Modify] Add it

---
 websocket-sharp/Server/HttpServer.cs | 29 ++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/websocket-sharp/Server/HttpServer.cs b/websocket-sharp/Server/HttpServer.cs
index ad5d615c..e6257f77 100644
--- a/websocket-sharp/Server/HttpServer.cs
+++ b/websocket-sharp/Server/HttpServer.cs
@@ -615,6 +615,35 @@ namespace WebSocketSharp.Server
       _state = ServerState.Stop;
     }
 
+    private bool checkIfAvailable (
+      bool ready, bool start, bool shutting, bool stop, out string message
+    )
+    {
+      message = null;
+
+      if (!ready && _state == ServerState.Ready) {
+        message = "This operation is not available in: ready";
+        return false;
+      }
+
+      if (!start && _state == ServerState.Start) {
+        message = "This operation is not available in: start";
+        return false;
+      }
+
+      if (!shutting && _state == ServerState.ShuttingDown) {
+        message = "This operation is not available in: shutting down";
+        return false;
+      }
+
+      if (!stop && _state == ServerState.Stop) {
+        message = "This operation is not available in: stop";
+        return false;
+      }
+
+      return true;
+    }
+
     private string checkIfCertificateExists ()
     {
       if (!_secure)