From f997976fd2670d882e3e6cc1d69e831fd8e690fd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=88=E5=9B=BD=E4=BC=9F?= <366193849@qq.com>
Date: Sat, 6 Nov 2021 12:45:05 +0800
Subject: [PATCH] =?UTF-8?q?=E5=9F=9F=E5=90=8D=E5=88=A4=E6=96=AD?=
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---
 FastGithub.HttpServer/HttpReverseProxyMiddleware.cs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/FastGithub.HttpServer/HttpReverseProxyMiddleware.cs b/FastGithub.HttpServer/HttpReverseProxyMiddleware.cs
index e29ee47..e4ea8aa 100644
--- a/FastGithub.HttpServer/HttpReverseProxyMiddleware.cs
+++ b/FastGithub.HttpServer/HttpReverseProxyMiddleware.cs
@@ -4,6 +4,7 @@ using Microsoft.AspNetCore.Http;
 using Microsoft.Extensions.Logging;
 using System;
 using System.Diagnostics.CodeAnalysis;
+using System.Net;
 using System.Threading.Tasks;
 using Yarp.ReverseProxy.Forwarder;
 
@@ -79,7 +80,7 @@ namespace FastGithub.HttpServer
             }
 
             // 未配置的域名，但仍然被解析到本机ip的域名
-            if (OperatingSystem.IsWindows() && host.Host.Contains('.'))
+            if (OperatingSystem.IsWindows() && IsDomain(host.Host))
             {
                 this.logger.LogWarning($"域名{host.Host}可能已经被DNS污染");
                 domainConfig = defaultDomainConfig;
@@ -87,6 +88,12 @@ namespace FastGithub.HttpServer
             }
 
             return false;
+
+            // 是否为域名
+            static bool IsDomain(string host)
+            {
+                return IPAddress.TryParse(host, out _) == false && host.Contains('.');
+            }
         }
 
         /// <summary>