From 587bf34c1877f68f8790cdb97e99aaa9c26f88de Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Thu, 26 Nov 2020 20:14:50 +0900
Subject: [PATCH] [Modify] Add an empty check

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

diff --git a/websocket-sharp/Net/ClientSslConfiguration.cs b/websocket-sharp/Net/ClientSslConfiguration.cs
index 812114b0..823a6969 100644
--- a/websocket-sharp/Net/ClientSslConfiguration.cs
+++ b/websocket-sharp/Net/ClientSslConfiguration.cs
@@ -82,6 +82,9 @@ namespace WebSocketSharp.Net
       if (targetHost == null)
         throw new ArgumentNullException ("targetHost");
 
+      if (targetHost.Length == 0)
+        throw new ArgumentException ("An empty string.", "targetHost");
+
       _targetHost = targetHost;
 
       _enabledSslProtocols = SslProtocols.None;