From a62f375f5b64eaab27c53a5367db88aff6048069 Mon Sep 17 00:00:00 2001
From: YFdyh000 <yfdyh000@gmail.com>
Date: Fri, 21 Feb 2020 07:03:38 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=AD=A3tcping=E9=80=BB=E8=BE=91?=
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* 当IP地址存在反向解析结果（例 [xxx].members.linode.com），会连接反向域名的IP地址池，可能导致测速IPv4服务器时连接到IPv6地址并且失败。
---
 v2rayN/v2rayN/Handler/SpeedtestHandler.cs | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/v2rayN/v2rayN/Handler/SpeedtestHandler.cs b/v2rayN/v2rayN/Handler/SpeedtestHandler.cs
index dad221e8889..69bc5a9c74f 100644
--- a/v2rayN/v2rayN/Handler/SpeedtestHandler.cs
+++ b/v2rayN/v2rayN/Handler/SpeedtestHandler.cs
@@ -253,8 +253,12 @@ private int GetTcpingTime(string url, int port)
 
             try
             {
-                IPHostEntry ipHostInfo = System.Net.Dns.GetHostEntry(url);
-                IPAddress ipAddress = ipHostInfo.AddressList[0];
+                IPAddress ipAddress;
+                if (!System.Net.IPAddress.TryParse(url, out ipAddress))
+                {
+                    IPHostEntry ipHostInfo = System.Net.Dns.GetHostEntry(url);
+                    ipAddress = ipHostInfo.AddressList[0];
+                }
 
                 var timer = new Stopwatch();
                 timer.Start();