From 1f8cb5b692cfbcbed83a27de65d18204e27809de Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Mon, 18 Dec 2017 16:32:13 +0900
Subject: [PATCH] [Modify] Add null check

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

diff --git a/websocket-sharp/Net/EndPointManager.cs b/websocket-sharp/Net/EndPointManager.cs
index 02eca4fc..9bc19a6e 100644
--- a/websocket-sharp/Net/EndPointManager.cs
+++ b/websocket-sharp/Net/EndPointManager.cs
@@ -136,6 +136,9 @@ namespace WebSocketSharp.Net
       var pref = new HttpListenerPrefix (uriPrefix);
 
       var addr = convertToIPAddress (pref.Host);
+      if (addr == null)
+        return;
+
       if (!addr.IsLocal ())
         return;