From 3dc9a7e7b38b2f496e210d16f4ae76a49d1cceb4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=88=E5=9B=BD=E4=BC=9F?= <366193849@qq.com>
Date: Fri, 25 Jun 2021 15:39:30 +0800
Subject: [PATCH] =?UTF-8?q?FindBestAddress=E7=9F=AD=E8=B7=AF=E6=9F=A5?=
 =?UTF-8?q?=E6=89=BE?=
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---
 FastGithub.Scanner/GithubScanResults.cs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/FastGithub.Scanner/GithubScanResults.cs b/FastGithub.Scanner/GithubScanResults.cs
index f274003..32f7771 100644
--- a/FastGithub.Scanner/GithubScanResults.cs
+++ b/FastGithub.Scanner/GithubScanResults.cs
@@ -1,4 +1,5 @@
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Options;
 using System.Collections.Generic;
 using System.Linq;
 using System.Net;
@@ -13,6 +14,12 @@ namespace FastGithub.Scanner
     {
         private readonly object syncRoot = new();
         private readonly List<GithubContext> contexts = new();
+        private readonly IOptionsMonitor<GithubLookupFactoryOptions> options;
+
+        public GithubScanResults(IOptionsMonitor<GithubLookupFactoryOptions> options)
+        {
+            this.options = options;
+        }
 
         /// <summary>
         /// 添加GithubContext
@@ -51,6 +58,11 @@ namespace FastGithub.Scanner
         /// <returns></returns>
         public IPAddress? FindBestAddress(string domain)
         {
+            if (this.options.CurrentValue.Domains.Contains(domain) == false)
+            {
+                return default;
+            }
+
             lock (this.syncRoot)
             {
                 return this.contexts