From 975bc5d584185e44d6eee2b5e38f137d1f35d66d Mon Sep 17 00:00:00 2001
From: Shreyas Zare <shreyas@technitium.com>
Date: Sun, 5 Feb 2023 16:29:37 +0530
Subject: [PATCH] BlockListZoneManager: refactored code for optimization.

---
 DnsServerCore/Dns/ZoneManagers/BlockListZoneManager.cs | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/DnsServerCore/Dns/ZoneManagers/BlockListZoneManager.cs b/DnsServerCore/Dns/ZoneManagers/BlockListZoneManager.cs
index bc09a64f..022e8e4d 100644
--- a/DnsServerCore/Dns/ZoneManagers/BlockListZoneManager.cs
+++ b/DnsServerCore/Dns/ZoneManagers/BlockListZoneManager.cs
@@ -35,6 +35,8 @@ namespace DnsServerCore.Dns.ZoneManagers
     {
         #region variables
 
+        readonly static char[] _popWordSeperator = new char[] { ' ', '\t' };
+
         readonly DnsServer _dnsServer;
         readonly string _localCacheFolder;
 
@@ -87,9 +89,9 @@ namespace DnsServerCore.Dns.ZoneManagers
             if (line.Length == 0)
                 return line;
 
-            line = line.TrimStart(' ', '\t');
+            line = line.TrimStart(_popWordSeperator);
 
-            int i = line.IndexOfAny(new char[] { ' ', '\t' });
+            int i = line.IndexOfAny(_popWordSeperator);
             string word;
 
             if (i < 0)
@@ -120,6 +122,7 @@ namespace DnsServerCore.Dns.ZoneManagers
                 {
                     //parse hosts file and populate block zone
                     StreamReader sR = new StreamReader(fS, true);
+                    char[] trimSeperator = new char[] { ' ', '\t', '*', '.' };
                     string line;
                     string firstWord;
                     string secondWord;
@@ -131,7 +134,7 @@ namespace DnsServerCore.Dns.ZoneManagers
                         if (line == null)
                             break; //eof
 
-                        line = line.TrimStart(' ', '\t', '*', '.');
+                        line = line.TrimStart(trimSeperator);
 
                         if (line.Length == 0)
                             continue; //skip empty line