From 0ca9232a52176ca6a9767a554be846a9cffdab1d Mon Sep 17 00:00:00 2001
From: Shreyas Zare <shreyas@technitium.com>
Date: Sat, 11 Mar 2023 15:13:21 +0530
Subject: [PATCH] BlockListZoneManager: updated UpdateBlockListsAsync() to
 perform http retries.

---
 DnsServerCore/Dns/ZoneManagers/BlockListZoneManager.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/DnsServerCore/Dns/ZoneManagers/BlockListZoneManager.cs b/DnsServerCore/Dns/ZoneManagers/BlockListZoneManager.cs
index 9862cca2..63f1b4e2 100644
--- a/DnsServerCore/Dns/ZoneManagers/BlockListZoneManager.cs
+++ b/DnsServerCore/Dns/ZoneManagers/BlockListZoneManager.cs
@@ -29,6 +29,7 @@ using TechnitiumLibrary.Net;
 using TechnitiumLibrary.Net.Dns;
 using TechnitiumLibrary.Net.Dns.EDnsOptions;
 using TechnitiumLibrary.Net.Dns.ResourceRecords;
+using TechnitiumLibrary.Net.Http.Client;
 
 namespace DnsServerCore.Dns.ZoneManagers
 {
@@ -392,7 +393,7 @@ namespace DnsServerCore.Dns.ZoneManagers
                     handler.UseProxy = _dnsServer.Proxy is not null;
                     handler.AutomaticDecompression = DecompressionMethods.All;
 
-                    using (HttpClient http = new HttpClient(handler))
+                    using (HttpClient http = new HttpClient(new HttpClientRetryHandler(handler)))
                     {
                         if (File.Exists(listFilePath))
                             http.DefaultRequestHeaders.IfModifiedSince = File.GetLastWriteTimeUtc(listFilePath);