From dc420c7b7e1d35f2376c852929b3dafea424edd8 Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Wed, 21 Apr 2021 19:46:58 +0900
Subject: [PATCH] [Modify] Polish it

---
 websocket-sharp/Net/HttpListener.cs | 20 ++++++++------------
 1 file changed, 8 insertions(+), 12 deletions(-)

diff --git a/websocket-sharp/Net/HttpListener.cs b/websocket-sharp/Net/HttpListener.cs
index 70384c6a..fea43aac 100644
--- a/websocket-sharp/Net/HttpListener.cs
+++ b/websocket-sharp/Net/HttpListener.cs
@@ -433,22 +433,18 @@ namespace WebSocketSharp.Net
 
     private void cleanupContextRegistry ()
     {
-      HttpListenerContext[] ctxs = null;
+      var cnt = _contextRegistry.Count;
 
-      lock (_contextRegistrySync) {
-        var cnt = _contextRegistry.Count;
+      if (cnt == 0)
+        return;
 
-        if (cnt == 0)
-          return;
+      var ctxs = new HttpListenerContext[cnt];
+      _contextRegistry.CopyTo (ctxs, 0);
 
-        ctxs = new HttpListenerContext[cnt];
-        _contextRegistry.CopyTo (ctxs, 0);
+      _contextRegistry.Clear ();
 
-        _contextRegistry.Clear ();
-      }
-
-      for (var i = ctxs.Length - 1; i >= 0; i--)
-        ctxs[i].Connection.Close (true);
+      foreach (var ctx in ctxs)
+        ctx.Connection.Close (true);
     }
 
     private void cleanupWaitQueue (Exception exception)