From c5064651ac16fc3f01c17345507de6baf2cb4898 Mon Sep 17 00:00:00 2001 From: Shreyas Zare Date: Sat, 20 Jun 2020 16:30:52 +0530 Subject: [PATCH] BlockListZoneManager: fixed null reference error. --- DnsServerCore/Dns/ZoneManagers/BlockListZoneManager.cs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/DnsServerCore/Dns/ZoneManagers/BlockListZoneManager.cs b/DnsServerCore/Dns/ZoneManagers/BlockListZoneManager.cs index badde519..ac4df3a6 100644 --- a/DnsServerCore/Dns/ZoneManagers/BlockListZoneManager.cs +++ b/DnsServerCore/Dns/ZoneManagers/BlockListZoneManager.cs @@ -315,7 +315,7 @@ namespace DnsServerCore.Dns.ZoneManagers } catch (WebException ex) { - if ((ex.Response as HttpWebResponse).StatusCode == HttpStatusCode.NotModified) + if ((ex.Response != null) && (ex.Response as HttpWebResponse).StatusCode == HttpStatusCode.NotModified) { LogManager log = _dnsServer.LogManager; if (log != null)