From 58ebb1e75687e840ad58a84709b1f403df1a5f68 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, 27 Aug 2021 09:32:48 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96=E5=9B=9E=E9=80=80=E9=80=BB?=
 =?UTF-8?q?=E8=BE=91?=
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---
 FastGithub.Dns/RequestResolver.cs | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/FastGithub.Dns/RequestResolver.cs b/FastGithub.Dns/RequestResolver.cs
index 04ae858..e876530 100644
--- a/FastGithub.Dns/RequestResolver.cs
+++ b/FastGithub.Dns/RequestResolver.cs
@@ -62,15 +62,19 @@ namespace FastGithub.Dns
             {
                 try
                 {
-                    var resolver = new UdpRequestResolver(dns);
-                    return await resolver.Resolve(request, cancellationToken);
+                    var fallbackResolver = new UdpRequestResolver(dns);
+                    var fallbackResponse = await fallbackResolver.Resolve(request, cancellationToken);
+                    if (fallbackResponse != null && fallbackResponse.AnswerRecords.Count > 0)
+                    {
+                        return fallbackResponse;
+                    }
                 }
                 catch (Exception)
                 {
                 }
             }
 
-            throw new FastGithubException($"无法解析域名{domain}");
+            return response;
         }
     }
 }