From 0212b9355879abafb4f98930bfb49b2ae6830553 Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Fri, 28 Aug 2020 22:03:43 +0900
Subject: [PATCH] [Modify] Replace it

---
 websocket-sharp/Net/HttpListenerPrefixCollection.cs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/websocket-sharp/Net/HttpListenerPrefixCollection.cs b/websocket-sharp/Net/HttpListenerPrefixCollection.cs
index 6510dcd0..ab0001f8 100644
--- a/websocket-sharp/Net/HttpListenerPrefixCollection.cs
+++ b/websocket-sharp/Net/HttpListenerPrefixCollection.cs
@@ -138,8 +138,10 @@ namespace WebSocketSharp.Net
     /// </exception>
     public void Add (string uriPrefix)
     {
+      if (_listener.IsDisposed)
+        throw new ObjectDisposedException (_listener.GetType ().ToString ());
+
       HttpListenerPrefix.CheckPrefix (uriPrefix);
-      _listener.CheckDisposed ();
 
       if (_prefixes.Contains (uriPrefix))
         return;